Plus +™
ModelKoolKare
EEAC325A
Recovery/Recycling/Recharging Unit
Model: EEAC325A
Service Manual
May, 2007 (Rev. C)
EEAC325A Service Manual
Trademark and Copyright Information
All information contained or disclosed in this document
is considered confidential and proprietary by Snap-on
Tools Company. All manufacturing, use, reproduction, and
sales rights are reserved by Snap-on Tools Company and
the information contained herein shall not be used in
whole or in part without the express written consent of
Snap-on Tools Company.
Trademark Acknowledgments
Snap-on® is a registered trademark of Snap-on Technologies, Inc. (USA and Canada)
KoolKare Plus +™ is a trademark of Snap-on Tools Company. (USA and Canada)
Copyright Information
KoolKare Plus +™ Service Manual ©2007 Snap-on Incorporated.
All rights reserved.
The information, specifications and illustrations in this manual are based on the latest
information available at the time of printing. Snap-on reserves the right to make
changes at any time without notice.
Page 2
Effective
09/2007
Table of Contents
EEAC325A Service Manual
Table of Contents
Safety Warnings ................................................................................................... 4
Section 1 — General Information ........................................................................ 5
Introduction ....................................................................................................................... 6
Product Views ................................................................................................................... 7
Operating Guidelines ....................................................................................................... 8
Unit Specifications ............................................................................................................ 10
Maintenance Schedule .................................................................................................... 11
Section 2 — Parts & Components ...................................................................... 13
External Parts .................................................................................................................... 14
Internal Parts ..................................................................................................................... 16
Component Assemblies .................................................................................................... 18
Plumbing Diagram & Parts List ....................................................................................... 25
Main Component Descriptions ......................................................................................... 26
Alphabetical Parts List ..................................................................................................... 28
Section 3 — Diagnostics ..................................................................................... 33
Functional Check .............................................................................................................. 34
12VDC Solenoid Test Procedure ...................................................................................... 37
Service Center Menu Options .......................................................................................... 38
Output Step Test ................................................................................................................ 39
Depressurizing the Unit .................................................................................................... 39
Troubleshooting ................................................................................................................ 40
Service Instructions and Calibration ............................................................................... 50
System Wiring ................................................................................................................... 67
Component Wiring ............................................................................................................ 68
Wiring Harnesses .............................................................................................................. 71
Component Identification ............................................................................................... 82
Component Application Chart ......................................................................................... 83
Flow Diagrams .................................................................................................................. 84
Section 4 — Service Bulletins ............................................................................. 93
Section 5 — Labor Rates ..................................................................................... 101
Section 6 — Product Warranty ............................................................................ 103
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Page 3
EEAC325A Service Manual
Safety Warnings
SAFETY WARNINGS
It is extremely important to follow the instructions in this manual. DO NOT attach any hoses or accessories until
prompted by the unit. Improper setup
and failure of the unit will result.
Use only SNAP-ON Designated Replacement Components when servicing
your equipment. Refer to the operator’s
manual or this service manual for correct
replacement part number(s).
Always wear eye protection and protective clothing when working with refrigerants. Refrigerant can cause injury.
Read and follow all warnings in the
operator’s manual and this service
manual before operating the unit.
When replacing components, make certain the new parts are connected exactly
as your instruction sheet directs you to
do. If an instruction sheet was not included, connect the replacement part
just like the original. Mark or label wire
and plumbing disconnections so replacing the new parts will confirm the previous configuration.
Disconnect hoses and tubes with extreme caution as they may contain liquid refrigerant under pressure.
Always disconnect the unit from the
power source before making any repairs
or replacements to the components.
Risk of electrical shock!
Avoid the use of extension cords because the extension cord may overheat.
However, if you must use an extension
cord, the cord must be No. 14 AWG
minimum and should not exceed more
than 25 feet in length.
Always depressurize the machine before
servicing or replacing any components.
Pressurized tanks contain liquid refrigerant. Overfilling of the tank may cause
violent explosion and possible injury or
death. Do not recover refrigerants into
a non-refillable storage container. Federal regulations require refrigerants to be
transported only in containers meeting
DOT spec. 4BW or DOT spec. 4BA.
Be sure that the refrigerant level in the
tank does not exceed 80% of the tank
volume. Failure to monitor the level
could result in excessive hydrostatic
pressure, causing physical injury or
death.
If scale assembly and UL circuit are not
calibrated, scale can overfill the tank,
causing possible explosion and/or vehicle overcharge.
Page 4
Warnings: Use this unit only with the
specified refrigerants. Cross-contamination with other refrigerant types will cause
severe damage to the A/C system and
to service tools and equipment. Do not
mix refrigerant types through a system
or in the same container!
Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose, and throat. When removing R-134a from the A/C system, use
service equipment certified to meet the
requirements of SAE J2210 (R-134a recycling equipment). If accidental system discharge occurs, ventilate work
area before resuming service. Make
sure there is adequate ventilation in the
vehicle servicing area.
Keep hands away from moving parts.
HFC-134a service equipment or vehicle
A/C systems should not be pressure
tested or leak tested with compressed
air. Some mixtures of air/HFC-134a
have been shown to be combustible at
elevated pressures. These mixtures are
potentially dangerous and may result in
fire or explosion causing injury or property damage.
Additional health and safety information
may be obtained from refrigerant and lubricant manufacturers.
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09/2007
General Information
EEAC325A Service Manual
Section 1 - General Information
Introduction .......................................................................................................... 6
Automatic Functions of the EEAC325A ............................................................................ 6
Additional Features of the EEAC325A ............................................................................. 6
Product Views ...................................................................................................... 7
Front View ......................................................................................................................... 7
Rear View .......................................................................................................................... 7
Operating Guidelines ........................................................................................... 8
Using the Control Panel ................................................................................................... 8
Setup Menu ....................................................................................................................... 9
Unit Specifications ............................................................................................... 10
Maintenance Schedule ........................................................................................ 11
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Page 5
EEAC325A Service Manual
General Information
INTRODUCTION
The Snap-on KoolKare Plus +™ EEAC325A recovers, recycles, evacuates, leak test, and recharges R-134a
quickly and accurately. The EEAC325A recovers up to 20% more refrigerant and will recharge the vehicle to
within ½ ounce of the charge capacity, complying with the new SAE J-2788 standard. New ergonomic cabinet
design provides additional storage areas for tools, filters, and oil bottles, including a convenient fold-down control
panel.
Automatic Functions of the EEAC325A
Additional Features of the EEAC325A
√ Automatic Operation – Allows the technician to
program the unit to recover, recycle, evacuate, and
recharge without user intervention.
• New 2X larger display makes the EEAC325A
easier than ever to use.
• Large tool storage area.
√ Vacuum Leak Test – Will monitor the vacuum level
after an evacuation and inform the technician of a
possible leak in the vehicle’s A/C system.
√ Automatic Refrigerant Refill – With this latest
advance, you never have to stop in the middle of
a job to change refrigerant tanks. The unit maintains a user selectable amount of refrigerant in an
internal vessel, and signals when it’s time to change
the supply tank, so no monitoring is required.
• Change between traditional & hybrid vehicle systems without fear of cross contamination with improved oil injection.
• Large Gauges that are easy to read.
• Heavy-duty compressor pulls from both high and
low sides during recovery.
√ Automatic Air Purge – Eliminates damaging air
without any monitoring of gauges or opening of
valves.
√ The Automatic Oil Drain – The unit automatically
drains system oil captured during recover, and the
display reminds you to empty the bottle. Graduations on the container clearly show you how much
oil needs to be replaced.
√ Refrigerant Charging – Select a charge mode from
either the high side, low side, or both. Accuracy
features eliminate guesswork.
√ Refrigerant Management System – New and improved, system displays refrigerant use and monitors remaining filter life. Prompts appear when
1/3 of filter life remains.
√ Vacuum Function – Defaults to 15 minutes, but is
programmable up to 99 minutes. Remaining
vacuum time is displayed on the screen.
Page 6
EEAC325A Unit
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09/2007
EEAC325A Service Manual
General Information
PRODUCT VIEWS
Large Easy-toRead Gauges
Digital Display &
Control Buttons
Power Switch/
Circuit Breaker
Control Panel
Oil Drain
Bottle
Oil Inject Bottle
FRONT VIEW
Front
Panel
Convenient Handle
for moving unit
Low- and
High-Side Hose
Locking
Casters
Pump Sightglass
Tank Straps
Power Cord
Large Wheels
for mobility across
air lines, power
cords, grates
Electronic Scale &
Calibration Device
REAR VIEW
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09/2007
Page 7
EEAC325A Service Manual
General Information
OPERATING GUIDELINES
Using the Control Panel
Main Power Switch
Turns power ON and OFF.
Digital Display
Visual interface between the operator and the machine.
Circuit Breaker
Protects unit from drawing too much current.
Up / Down Arrow Keys
The UP and DOWN arrow keys are used for scrolling
through menu items.
Low-Side Gauge
Shows the A/C system’s low-side pressure.
Right / Left Arrow Keys
The LEFT or RIGHT arrow key are used to confirm a
selection or cancel out of a screen, or to continue or stop
a procedure.
High-Side Gauge
Shows the A/C system’s high-side pressure.
Low-Side
Gauge
High-Side
Gauge
Digital Display
Up / Down
Arrow Keys
RECOVER
VACUUM
AUTO
(ENTER)
LOW
CHARGE
SET-UP
INJ OIL
(AMOUNTS)
HIGH
Left / Right
Arrow Keys
CIRCUIT
BREAKER
Main Power
Switch
Control Panel
Page 8
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09/2007
EEAC325A Service Manual
General Information
Setup Menu
Access the Setup Menu from the Main Menu at any time
to change the unit’s defaults or retrieve information.
Once the Setup Menu has been selected, use the UP
or DOWN arrow key to scroll through the menu items.
Use the UP or DOWN arrow key to scroll through
choices.
Use the LEFT or RIGHT arrow key to confirm a selection or cancel out of a screen.
Select Language
Operator may choose to have prompts displayed in one
of three languages: English, Spanish, or French.
Display Version
Displays the revision level of the software in the unit.
Select Units
Operator may choose to have test results displayed in
Imperial (lbs.), Imperial (lbs. and oz.), or Metric (kg.).
Refrig Management
Displays the amount of refrigerant recovered, charged,
and replenished (for the life of the unit), and filtered (since
the last filter change).
Manual Refill
Use to transfer refrigerant from the source tank to the
internal storage vessel (ISV).
Adjust Tank Fill
When connected to a refrigerant source, the unit maintains a pre-set amount of refrigerant in the internal storage vessel (default is 15 lbs.). This value may be adjusted up/down to suite the user’s needs.
Digital Display
RECOVER
VACUUM
AUTO
(ENTER)
CHARGE
SET-UP
INJ OIL
(AMOUNTS)
Up / Down
Arrow Keys
Left / Right
Arrow Keys
Contrast
Use this menu item to adjust the contrast of the LCD
(the digital display) by pressing the UP or DOWN arrow key. (The default is 80.)
Beeper
Use this menu item to mute or adjust the unit’s audio tone.
Maintain Vacuum Oil
For maximum vacuum pump performance, change
vacuum pump oil after every 10 hours of operation. This
menu item displays how long the vacuum pump has
operated since the last oil change and allows the user to
reset the value once an oil change is complete.
Maintain Filter
The filter-drier removes acid, particulates, and moisture
from the refrigerant. To meet the requirements of UL
J-2788, it is mandatory to replace the filter-drier after
150 lbs. (68 kg) of refrigerant has been filtered. The
menu item will show how much refrigerant has been filtered since the last filter change, and allows the user to
reset the value once a filter change is complete. It will
be necessary to enter a 10-digit code, which appears
on the filter, to ensure compliance with UL J-2788.
Calibration Check
Use to verify internal scale calibration.
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09/2007
Page 9
EEAC325A Service Manual
General Information
UNIT SPECIFICATIONS
EEAC325A Unit - General Information
Volts:
120V *
Frequency:
60 Hz
Amps:
12.0A
Refrigerants:
R-134a 98 Class III, ARI 98 Class IV
Operating Pressure:
450 PSI (max.)
Pressure Range:
30inHg-300 PSI
Storage Temperature Range:
Operating Temperature Range:
Relative Humidity:
Recycling Filter-Drier:
-4°F to 140°F (-20°C to 60°C)
50 to 120°F (11 to 49°C)
Up to 80% non-condensing
43 cu. in. Spin-On Type
Oil Drain Bottle:
12 oz. (360 ml)
Oil Inject Bottle:
12 oz. (360 ml)
Compressor:
Vacuum Pump:
Gauge Ranges:
Recovery Amount:
1/3 HP, 1.5 CFM Reciprocating
1/3 HP, 3 CFM, 2 Stage
High Side: 500 PSI (34 BAR) max.
Low Side: 350 PSI (24 BAR) max.
30 lbs. (14 kg) max.
Recovery Rate:
1 lb. per minute max.
Refrigerant Charge Amount:
22 lbs. (10.0 kg) max.
Unit Height:
46 in. (116.8 cm)
Unit Width:
24 in. (61 cm)
Unit Depth:
34 in. (86.36 cm)
Shipping Weight:
Certified:
235 lbs. (106.6 kg)
UL Listed
SAE-J2788
* The voltage at the unit must be ±10% of the unit's rated voltage. Extension cords must be a minimum of
14 AWG and kept as short as possible. (25 ft./7.6 m. or less)
Page 10
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EEAC325A Service Manual
General Information
MAINTENANCE SCHEDULE
Test Required
Change vacuum pump oil.
Recommended Frequency
Every 10 hours of operation.
Change the Filter/Drier.
After recovering 150 lbs. (68 kg) of refrigerant
or after recovering refrigerant from a burnedout system.
Fiter/Drier Warning
After recovering 100 lbs. (45 kg) of refrigerant.
Check Scale (Refer to scale calibration instructions in
Diagnostic Section if needed.)
Monthly
Check for Leaks.
Monthly
Clean (vacuum) condenser panel.
Monthly
Clean cabinet and control panel.
Monthly
Check casters and wheels for proper operation. Lubricate
bearings and brake components if necessary.
Monthly
Inspect hoses and power cord for cuts and abrasions.
Daily
Due to normal wear and tear, the EEAC325A requires regular maintenance to guarantee safe operation and optimum performance. The above chart provides a schedule of the recommended maintenance tasks.
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Page 11
EEAC325A Service Manual
Page 12
General Information
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EEAC325A Service Manual
Parts & Components
Section 2 - Parts & Components
External Parts ....................................................................................................... 14
Internal Parts ........................................................................................................ 16
Component Assemblies ....................................................................................... 18
Control Panel Assembly ...................................................................................................
Station Pump Assembly, 115V ..........................................................................................
Compressor Assembly, 115V .............................................................................................
Manifold Assembly ............................................................................................................
Internal Tank Assembly ....................................................................................................
18
20
21
22
24
Plumbing Diagram and Parts List ....................................................................... 25
Main Component Descriptions ........................................................................... 26
Alphabetical Parts List ......................................................................................... 28
Disclosure:
Although most parts are listed, some part numbers are part of an
assembly available only to manufacturing.
Information and part numbers contained in this publication were accurate at the time it was written. Any discrepancies should be brought
to the attention of Snap-on KoolKare Plus +™ Technical Support.
Phone: 1-866-769-2788
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09/2007
Page 13
EEAC325A Service Manual
Parts & Components
EXTERNAL PARTS
3
3
4
1
7 7X
8 7X
6
5
10 2X
2 9 2X
EEAC325A EXTERNAL PARTS
No.
1
2
3
4
5
6
7
8
9
10
Page 14
Description
BACK, EEAC325A
PANEL, LEFT, EEAC325A
BOTTLE, OIL DRAIN/OIL INJECT
NAMEPLATE, SNAP-ON LOGO
PANEL, FRONT, EEAC325A
DECAL FRONT, SNAP-ON
WASHER, 1/4" FLAT
SCREW, 1/4 X 3/4" PLASTITE
SCREW, 1/4"-20 X 3/4"
SCREW, 1/4"-20 X 1/2"
Qty.
Part No.
1
541611
1
541613
2 EEAC325A4
1
1
541612
1
7
7
2
2
Effective
09/2007
EEAC325A Service Manual
Parts & Components
2 6 7X
3
5
4
1 6 2X
EEAC325A EXTERNAL PARTS
No.
1
2
3
4
5
6
Effective
09/2007
Description
PANEL, RIGHT, EEAC325A
TOP, EEAC325A
DECAL, 1-800 PHONE NUMBER
DECAL, WARNING
DECAL, EEAC325A UL
SCREW, 1/4"-20 X 3/4"
Qty. Part No.
1
541614
1
541615
1
1
1
9
Page 15
EEAC325A Service Manual
Parts & Components
INTERNAL PARTS
38
2X 39
65
67
SEE DETAIL A
2X 40 12
EEAC325A UNIT COMPONENTS
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Description
BASE ASSY
CENTER DIVIDER
SHELF, VACUUM PUMP
SCALE ASSEMBLY & MAGNET
GROMMET, COMPRESSOR
COMPRESSOR ASSEMBLY, 115V
MANIFOLD ASSEMBLY,
BRACKET, PUMP MOUNTING
STATION PUMP, 115V, 3 CFM
ISV ASSEMBLY
BOLT, 1/4-20 X 1/2"
FAN ASSEMBLY, 115V
SLEEVE, COMPRESSOR
WASHER, 1/4" ID FENDER
Qty.
1
1
1
1
4
1
1
2
1
1
2
1
4
12
Part No.
541618
RA20002
RA20020
RA20018
RA20017
RA17416
EEAC325A UNIT COMPONENTS
No.
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Description
BOLT, 1/4-20 X 2" SERR HEAD
LOCKNUT, 1/4-20
STABILIZER BRACKET
BOLT, 1/4-20 X 1.5"
NUT, 8-32 SEMS
BRACKET, CAPACITOR
SCREW, 6-32 X 3/8
CAPACITOR, 115V COMPRESSOR
SCREW, 1/4"-20 X 3/4"
SCREW, 8-32 X 3/8 SEMS
SCREW, 1/4 X 3/4" PLASTITE
MAGNET (PART OF SCALE ASSY)
SCREW, 1/4-20 X 3.5 LONG
SCREW, 1/4-20 X 1/2" LONG
Qty. Part No.
4
10
1
1
6
1
1
1 RA19489
15
5
14
1 RA20002
1
1
NOTE: The above parts listing may refer to parts located on unit diagrams on following page.
Page 16
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EEAC325A Service Manual
Parts & Components
COMPRESSOR
SEE DETAIL B
EEAC325A UNIT COMPONENTS
No.
29
30
31
38
39
40
42
45
47
48
49
65
66
67
DETAIL B
COMPRESSOR
MOUNTING
Description
Qty. Part No.
POWER SUPPLY, 12 VOLT
1 RA20014
SCREW, SOCKET HD CAP M3-.5 X 5 4
SUPPORT, CONTROL PANEL
1
1
BRACKET, POWER CORD
BUSHING, HEYCO
1
SCREW, #10-16 X 3/4"
2
TAG, POWER CORD
1
INSERT, DIE CUT FOAM
1
PANEL, CONTROL ASSEMBLY
1
PCB ASSEMBLY, RELAY BOARD
1 RA20013
SCREW, 1/4 X 1/2" PLASTITE
2
STRAP, VELCRO
1
EDGE TRIM, RUBBER
1.67'
DECAL, SERIAL NUMBER
1
DETAIL A
ISV
NOTE: The above parts listing may refer to parts located on unit diagrams on previous page.
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Page 17
EEAC325A Service Manual
Parts & Components
COMPONENT ASSEMBLIES
CONTROL PANEL ASSEMBLY
CONTROL PANEL ASSEMBLY
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Description
SWITCH, POWER
CIRCUIT BREAKER 15 AMP
GUAGE, LOW SIDE - GENERIC
GAUGE, HIGH SIDE - GENERIC
KEYPAD, EEAC325A
PANEL, CONTROL
CONNECTOR, 1/8 NPTF X 1/8
PCB ASSEMBLY, SD CARD
SCREW, #4-40 X 3/8 P E H
SCREW, 6-32 X 1/4 PE TORX
PCB ASSEMBLY, CONTROL BOARD
BRACKET
NUT, 10-32 HEX SEMS
TUBE, 1/8" RED
TUBE, 1/8" BLUE
Qty
1
1
1
1
1
1
2
1
4
4
1
2
4
4'
4'
Part No.
RA19343
518638
539955
539956
541624
RA20011
RA20012
RA20003
RA20004
NOTE: The above parts listing may refer to parts located on unit diagrams on following page.
Page 18
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EEAC325A Service Manual
Parts & Components
CONTROL PANEL ASSEMBLY
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Page 19
EEAC325A Service Manual
Parts & Components
STATION PUMP ASSEMBLY, 115V
RA20017
3
4
2
1
5
6
7
8
STATION PUMP ASSEMBLY, 115V
No.
1
2
3
4
5
6
7
8
Description
STATION PUMP ASSEMBLY
RESERVOIR ASSEMBLY
BRASE DISCHARGE FITTING *
BRASS INLET FITTING *
SIGHT GLASS NUT *
OIL FILL PLUG *
SIGHT GLASS ASSEMBLY W/O-RING *
OIL DRAIN ASSEMBLY W/CAP *
Qty
1
1
1
1
1
1
1
1
Part No.
RA20017
RA19950
* Items followed by an asterisk are part of the Reservoir Assembly Kit
(RA19950) and are not sold separately.
Page 20
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EEAC325A Service Manual
Parts & Components
COMPRESSOR ASSEMBLY, 115V
RA20020
1
DISCHARGE
SUCTION
SUCTION
SUCTION
SUCTION
DISCHARGE
COMPRESSOR ASSEMBLY, 115V
No.
1
Effective
09/2007
Description
COMPRESSOR, 115V
RELAY
PROTECTOR
CAPACITOR
COVER
BAIL
BRACKETS
SCREW
SLEEVE
GROMMET
CAPACITOR WIRE
Qty
1
1
1
1
1
1
1
1
4
4
2
Part No.
RA20020
INC
INC
INC
INC
INC
INC
INC
INC
INC
INC
Page 21
EEAC325A Service Manual
Parts & Components
MANIFOLD ASSEMBLY
RA20018
See Note
Next Page
B
32 5 X
2X
E
See Note
Next Page
SERVICE
PORT
A
See Note Next Page
C
See Note Next Page
D
MANIFOLD ASSEMBLY
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Description
Qty. Part No.
MANIFOLD BLOCK, TOP
1
MANIFOLD BLOCK, LOWER
1
ELBOW, 1/8 MP X 3/8 PNEU COMP
3
HEAT EXCHANGER
1
O-RING
2
ACCUMULATOR SHELL
1
O-RING, PKR #SB17-119-7N
1
O-RING, PKR #SB17-143-7N
1
SEPARATOR ELEMENT
1
OIL SEPARATOR BOWL(1.5-3.0 IN LB 1
UNION, 1/8 MP X 1/8 MP X .97
2
TUBE, MANIFOLD CONN,(75 IN LBS) 1
FITTING, 1/4 MFL X 1/8 NPTF
1
SCHRADER CORE, (1.5-3.0 IN LBS)
1
CAP, 1/4 FLARE W/ O-RING
1
6X
F
See Note
Next Page
See Note Next Page
MANIFOLD ASSEMBLY
No.
16
17
18
19
20
21
22
23
24
25
26
27
29
30
31
32
Description
Qty.
Part No.
SOLENOID, 12V DC DISCRETE
2
RA20009
SOLENOID, 12V DC MAN,(75 IN LBS) 12
RA20010
NUT, COMPRESSION (1/8 TUBE)
2
RA20008
ELBOW, 1/8 NPTF X 1/4 COMP
1
ACCUM TRANSDUCER
2
CHECK VALVE, (75 IN LBS)
6
RA20016
TEE, MALE BRANCH 1/8 NPTF
1
CHECK VALVE
1
RA20015
FITTING, 1/8 NPT X 1/4 COMP
2
O-RING, C0873 2-240
1
FILTER DRIER, SPIN-ON
1 EEAC325A1
ELBOW, 1/8 MP X 1/8 PNEU
1
FITTING, HALF UNION .12MP X .25 FL 2
SWITCH, HIGH PRESSURE CUT-OUT 1
RA19427
SCREW, SOCKET, (30 IN LBS)
1
BALL, MANIFOLD PLUG
5
NOTE: The above parts listing may refer to manifold parts on following page.
Page 22
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EEAC325A Service Manual
Parts & Components
3X
NOTE
A. Torque Schrader Core (item 14) to
1.5-3.0 IN. LBS.
B. Torque to 30 IN LBS ±5.
C. Apply Loctite 242 to threads of
Manifold Connection Tube (item
12) and torque to 75 IN. LBS.
D. Torque Manifold Solenoid (item 17)
to manifold with 75 IN. LBS. ±5.
Torque Fastener to 30 IN LBS ±5.
E. Press flush ±.030 with surface.
F. Torque Checkvalve (item 21) to 75
IN. LBS. (6 places)
G. Use (Loctite 565) on all pipe
threads.
H. Lubricate all O-rings on components before assembling.
NOTE: The above notes may refer to the manifold diagram on previous page.
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Page 23
EEAC325A Service Manual
Parts & Components
INTERNAL TANK ASSEMBLY
3
4
9
5
10
8
11
2
7
12
6
13
1
NOTE: Use Loctite 565 on all pipe threads.
NOTE: Tank Tare Weight:
Worthington:
17.50 lbs. (7.94 kg.)
Air Com:
20.50 lbs. (9.30 kg.)
ISV ASSEMBLY
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Page 24
Description
ISV, INTERNAL
FITTING, STRAIGHT
SOLENOID, 12V DC DISCRETE
VALVE, BALL, AIR PURGE
VALVE, BALL, LIQUID
PRESSURE RELIEF, 450PSI
FITTING, TEE, .25FP X .25FP X .25MP
VALVE, BALL, VAPOR
TEMPERATURE PROBE
TRANSDUCER, AIR PURGE
TEE, MALE BRANCH 1/8 NPTF
ORIFICE, UNION .026
MUFFLER, AIR EXHAUST
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
Part No.
539477
210312
RA20009
539799
539798
RA19499
508690
540322
539472
539229
539654
539804
519605
Effective
09/2007
EEAC325A Service Manual
Parts & Components
PLUMBING DIAGRAM
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
CABLE TIE TUBES TO HOLE
IN VACUUM PUMP SHELF
TAB WITH (1) 535876.
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
VACUUM PUMP EXHAUST
SHOULD PROTRUDE
APPROX. 1.5” INTO OIL
DRAIN BOTTLE
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
CUT END OF TUBE AT 45° AND
INSERT TO BOTTOM OF
BOTTLE. CABLE TIE TUBE TO
HOLE IN VACUUM PUMP
SHELF TAB WITH (1) 535876
RED TUBE FROM
HIGH SIDE GAUGE
HIGH SIDE SERVICE HOSE
ROUTE THROUGH HOLES
IN SIDE SUPPORT
LOW SIDE SERVICE HOSE
ROUTE THROUGH HOLES
IN SIDE SUPPORT
BLUE TUBE FROM
LOW SIDE GAUGE
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
BLACK TANK FILL HOSE
ROUTE THROUGH HOLE
IN SIDE SUPPORT
Plumbing Diagram Parts List
No.
Description
Qty.
Part No.
1
HOSE, LOW SIDE SERVICE
1
EEAC325A3
2
HOSE, HIGH SIDE SERVICE
1
EEAC325A2
3
TUBE, 1/4 OD X 0.040 ID
19"
120225
4
TUBE, 3/8" HIGH PRESSURE
16"
RA20005
5
HOSE, LIQUID
1
541627
6
HOSE, VAPOR
1
541626
7
TUBE, 1/4 OD X 0.040 ID
28"
120225
8
HOSE, TANK FILL
1
541625
9
TUBE, 1/4 OD X 0.040 ID
42"
120225
10
TUBE, 3/8" HIGH PRESSURE
15"
RA20005
11
TUBE, COMPRESSOR TO MANIFOLD
1
538469
12
TUBE, 3/8" HIGH PRESSURE
12"
RA20005
13
TUBE, NYLON 1/8 OD X .070 ID
42"
121773
14
NUT, COMPRESSION (3/8 TUBE)
2
RA20006
15
O'RING (PKR #5-124) NEOPRENE
2
RA19916
16
NUT, COMPRESSION (1/4 TUBE)
1
RA20007
Effective
09/2007
USE LOCTITE 242
OR EQUIVALENT
ON THREADS
NOTE: Item # RA20005 (tube, 3/8”
high pressure) comes in a length of
1.5’. Cut hose to proper length as
indicated in plumbing parts list.
Page 25
EEAC325A Service Manual
Parts & Components
MAIN COMPONENT DESCRIPTIONS
12V POWER SUPPLY — Provides 12 volts to power the
circuit boards, manifold block components, and the ISV
air purge solenoid.
BOTTLE, OIL DRAIN — Recovers the used oil during
the oil drain process.
BOTTLE, OIL INJECT — Stores oil for injection into the
A/C system.
BREAKER, 15 AMP — Protects the unit from drawing to
much current. If blown, unit is completely inoperative.
CALIBRATION BALL — Calibration standard that attaches to magnet under scale assembly. Used to verify
scale calibration.
CASTER — 5” x 2” wheels used for maneuvering unit.
CHECK VALVE — Allows flow in one direction only.
GAUGE, HIGH SIDE — Monitor high-side pressure of
the vehicle being serviced.
GAUGE, LOW SIDE — Monitors low-side pressure of
the vehicle being serviced.
HIGH PRESSURE CUTOUT SWITCH — Switch opens
at 435 ± 10 psi (2999 ± 69 kPa) and resets at 320 ± 20 psi
(2066 ± 137 kPa). If pressure in the high side of the system
exceeds 435 psi (2999 kPa), the switch opens stopping all
functions.
INTERNAL STORAGE VESSEL (ISV) — Storage tank
that the recovered and recycled refrigerant is stored. Vapor, liquid, and air purge access is on-top of tank.
KEYPAD — Touch-pad cover for the front of the control
board.
COMPRESSOR — Moves refrigerant from the A/C system being serviced into the internal tank on the unit.
MANIFOLD BLOCK ASSEMBLY — Internal block assembly that contains solenoids, check valves and switches.
Refrigerant will flow through the manifold assembly for
proper distribution.
COMPRESSOR CAPACITOR — Used for starting the
compressor. Helps reduce the initial high current demand
required by the compressor on start-up.
MUFFLER, AIR EXHAUST — Disperses excessive air
from the ISV. Provides effective reduction of objectionable air exhaust noise.
COMPRESSOR OIL SEPARATOR — Removes the compressor oil from the refrigerant that is leaving the compressor. The stored oil is returned to the compressor when
the oil return solenoid receives power.
ORIFICE, UNION— Fitting used to reduce the flow rate.
POWER CORD — Supplies main power to the unit.
CONTROL PANEL — User interface panel for controlling refrigerant recovery, recycling and recharging.
PRESSURE RELIEF VALVE, 450 PSI — Spring loaded
safety valve use to releases pressure from internal tank
assembly if pressure exceeds 450 psi.
DISPLAY/CONTROL BOARD — Front display panel
and main control of the EEAC325A.
RELAY BOARD — Relay control for all 12V and 115V
components.
FAN, 115V — Keeps the compressor’s electrical components cool.
SCALE ASSEMBLY — Measures the amount of refrigerant being charged and recovered.
FILTER DRIER, SPIN-ON — Used to remove moisture
and particles from refrigerant. Must be changed every
time 150 lbs of refrigerant is recovered.
SD CARD PCB ASSEMBLY — Used to read information
from Secure Digital (SD) memory cards.
SIGHTGLASS – Used to view vacuum pump oil level.
Page 26
Effective
09/2007
Parts & Components
SOLENOID (1), NORMAL DISCHARGE — When energized, allows refrigerant flow from the compressor to the
system oil separator, then to the internal storage vessel.
SOLENOID (2), HIGH-SIDE CLEAR — Energized during
the high-side clearing process.
SOLENOID (3), OIL INJECT — Energized during the Oil
Inject process to allow A/C system oil to be replenished.
SOLENOID (4), DEEP RECOVER — When energized,
uses vacuum pump to perform “deep” recovery of refrigerant from the system being serviced.
SOLENOID (5), HIGH-SIDE CHARGE — When energized, allows refrigerant from ISV to enter high-side of
system being serviced.
SOLENOID (6), LOW-SIDE CHARGE — When energized, allows refrigerant from ISV to enter low-side of system being serviced.
SOLENOID (7), HIGH-SIDE INLET — Allows an open
“pathway” for refrigerant flow and vacuum between the
A/C system high side and the EEAC325A unit. This solenoid is powered during the Recover, Vacuum, and Leak
Check process.
SOLENOID (8), VACUUM — When energized, allows a
vacuum or deep recovery to be pulled on the A/C system
being serviced.
SOLENOID (9), LOW-SIDE INLET — Allows an open
“pathway” for refrigerant flow and vacuum between the
A/C system low side and the EEAC325A unit. This solenoid is powered during the Recover, Vacuum and Flush
process.
SOLENOID (10), RECOVERY — When energized, provides the primary pathway of removing refrigerant from
the system being serviced. This solenoid is also powered
during the Flush process.
SOLENOID (11), TANK FILL — When energized during
the Tank Fill process, allows refrigerant to flow from the
external supply tank to the ISV.
Effective
09/2007
EEAC325A Service Manual
SOLENOID (12), POWER CHARGE/FEEDBACK — Provides “feedback” pressure to assist the oil drain operation. Also, increases tank pressure to assist the charging
function.
SOLENOID (13), OIL RETURN — When energized, it
returns compressor oil from the compressor oil separator
to the compressor and equalizes the pressure on the high
and low side of the compressor.
SOLENOID (14), OIL DRAIN — Energized at the end of
the Recover process to drain oil.
SOLENOID (15), AIR PURGE — Energized to allow excessive air to be removed from the internal tank.
SWITCH, POWER — Allows the unit to be turned ON
and OFF.
SYSTEM OIL SEPARATOR — Heat exchanger with highside coils that provide internal heat to the canister causing saturated vapor and accumulated liquid refrigerants
to evaporate. This process prevents liquid refrigerant
from entering the compressor and separates the refrigerant oil.
TEMPERATURE PROBE — Monitors the temperature
inside the internal storage vessel (ISV).
TRANSDUCER, ACCUM (SYSTEM OIL SEPARATOR)
— Measures the pressure within the system oil separator.
TRANSDUCER, AIR PURGE — Measures the pressure
within the internal storage vessel (ISV).
TRANSDUCER, LOW-/HIGH-SIDE — Measures the
pressure of incoming refrigerant from the A/C system. Pressure readings are then relayed to the control board.
VACUUM PUMP — 115V pump designed to remove moisture and air from an A/C system. Also aids in the recovery
process by performing a deep recovery of A/C system.
WHEEL, PNEUMATIC 10” — Transport wheels.
Page 27
EEAC325A Service Manual
Parts & Components
ALPHABETICAL PARTS LIST
DESCRIPTION
PART #
12 VOLT, POWER SUPPLY
RA20014
AC POWER CORD
122770
AIR EXHAUST MUFFLER
519605
AIR PURGE TRANSDUCER
539229
BALL VALVE, AIR PURGE
539799
BALL VALVE, LIQUID
539798
BALL VALVE, VAPOR
540322
BOTTLE, OIL DRAIN / INJECT
EEAC325A4
CABLE, INTERCONNECT
539995
CABLE, SD BOARD
539996
CALIBRATION WEIGHT
540066
CAPACITOR, 110V START
RA19489
CASTER, 5” DIA X 2” WIDE
RA19631
CHECK VALVE KIT, MANIFOLD
RA20016
CHECK VALVE, VACUUM RELIEF
RA20015
CIRCUIT BREAKER, 15 AMP
518638
COMPRESSOR ASSEMBLY 115 VOLTS
RA20020
COMPRESSOR OIL, MSDS-POLYOL ESTER OIL
RA17283
COMPRESSOR START KIT
RA19489
CORE SCHRADER
RA19916
COUPLER, HIGH SIDE
EEAC325A5
COUPLER, LOW SIDE
EEAC325A6
COUPLER SET, SERVICE (HIGH & LOW-SIDE COUPLERS)
18192
DISPLAY/CONTROL BOARD
RA20012
EEAC325A, BACK
541611
EEAC325A, BASE ASSEMBLY
541618
EEAC325A, FRONT PANEL
541612
Page 28
NOTES
Kit inc. 6 valves
Effective
09/2007
EEAC325A Service Manual
Parts & Components
DESCRIPTION
PART #
NOTES
EEAC325A, LEFT PANEL
541613
EEAC325A, RIGHT PANEL
541614
EEAC325A, TOP
541615
FAN,115V
RA17416
FILTER DRIER, SPIN-ON
EEAC325A1
FITTING, STRAIGHT
210312
ISV Assembly
FITTING, TEE, .25FP X .25FP X .25MP
508690
ISV Assembly
GAUGE, HIGH SIDE
539956
GAUGE, LOW SIDE
539955
HARNESS, COMPRESSOR PIGTAIL
539991
HARNESS, FAN COMPRESSOR
539989
HARNESS, GROUND
539993
HARNESS, HIGH PRESSURE CUTOUT
539992
HARNESS, MANIFOLD 1
539927
HARNESS, MANIFOLD 2
539987
HARNESS, POWER
539990
HARNESS, POWER SUPPLY
539994
HARNESS, TRANSDUCER
539988
HIGH PRESSURE CUT-OUT SWITCH
RA19427
HOSE, HIGH SIDE SERVICE
EEAC325A2
HOSE, LIQUID
541627
HOSE, LOW SIDE SERVICE
EEAC325A3
HOSE, TANK FILL
541625
HOSE, VAPOR
541626
ISV TANK, INTERNAL
539477
KEYPAD, EEAC325A
541624
MAGNET & SCALE ASSEMBLY
RA20002
Effective
09/2007
Page 29
EEAC325A Service Manual
DESCRIPTION
Parts & Components
PART #
MAINTENANCE KIT
13172
MANIFOLD ASSEMBLY
RA20018
MANUAL, USER
ZEEAC325A
MUFFLER, AIR EXHAUST
519605
NUT, COMPRESSION (1/4 TUBE)
RA20007
NUT, COMPRESSION (1/8 TUBE)
RA20008
NUT, COMPRESSION (3/8 TUBE)
RA20006
OIL, COMPRESSOR, MSDS-POLYOL ESTER OIL
RA17283
OIL, PUMP - 16 OZ, SNAP-ON
542758
OIL DRAIN / INJECT BOTTLE
EEAC325A4
ORIFICE, UNION .026
539804
PCB ASSY, DISPLAY/CONTROL BOARD
RA20012
PCB ASSY, RELAY BOARD
RA20013
PCB ASSY, SECURE DIGITAL CARD
RA20011
POWER SUPPLY, 12 VOLT
RA20014
PRESSURE RELIEF, 450 PSI
RA19499
PROTECTOR, 110V MOTOR OVERLOAD
RA19489
RELAY, 110V STARTING
RA19489
RELAY BOARD
RA20013
SCALE ASSEMBLY & MAGNET
RA20002
SD CARD, PCB ASSEMBLY
RA20011
SERVICE COUPLER HIGH SIDE (R134A)
EEAC325A5
SERVICE COUPLER LOW SIDE (R134A)
EEAC325A6
SERVICE COUPLER SET (HIGH & LOW-SIDE COUPLERS)
18192
SERVICE HOSE, HIGH SIDE
EEAC325A2
SERVICE HOSE, LOW SIDE
EEAC325A3
SOLENOID, 12V DC DISCRETE
RA20009
Page 30
NOTES
ISV Assembly
Effective
09/2007
EEAC325A Service Manual
Parts & Components
DESCRIPTION
PART #
NOTES
SOLENOID, 12V DC MANIFOLD
RA20010
SWITCH, HIGH PRESSURE CUT-OUT
RA19427
SWITCH, ON-OFF, (I-O)
RA19343
TEE, MALE BRANCH, 1/8 NPTF
539654
TEMPERATURE PROBE
539472
TRANSDUCER, AIR PURGE
539229
TUBE 1/4 OD X 0.040 WALL
120225
Ordered by the foot
TUBE, 1/8" BLUE
RA20004
3 ft.
TUBE, 1/8" RED
RA20003
3 ft.
TUBE, 3/8" HIGH PRESSURE
RA20005
TUBE, COMPRESSOR TO MANIFOLD
538469
TUBE, MANIFOLD CONNECTION
537991
TUBE, NYLON 1/8 OD X .075 ID
121773
VACUUM PUMP, 115V 3 CFM
RA20017
VACUUM PUMP OIL, - 16 OZ, SNAP-ON
542758
WEIGHT, CALIBRATION
540066
WHEEL, CASTER, 5” DIA X 2” WIDE
RA19631
WHEEL, PNEUMATIC, 10”
19823
WIRE HARNESS, COMPRESSOR PIGTAIL
539991
WIRE HARNESS, FAN COMPRESSOR
539989
WIRE HARNESS, GROUND
539993
WIRE HARNESS, HIGH PRESSURE CUT-OUT
539992
WIRE HARNESS, MANIFOLD 1
539927
WIRE HARNESS, MANIFOLD 2
539987
WIRE HARNESS, POWER
539990
WIRE HARNESS, POWER SUPPLY
539994
WIRE HARNESS, TRANSDUCER
539988
Effective
09/2007
ISV Assembly
Ordered by the foot
Page 31
EEAC325A Service Manual
Page 32
Parts & Components
Effective
09/2007
EEAC325A Service Manual
Diagnostics
Section 3 - Diagnostics
Functional Check ................................................................................................. 34
12VDC Solenoid Test Procedure ........................................................................ 37
Service Center Menu Options ............................................................................. 38
Output Step Test ................................................................................................... 39
Depressurizing the Unit ....................................................................................... 39
Troubleshooting ................................................................................................... 40
Unit Will Not Power-Up, No Display ................................................................................
Will Not Tank Fill ..............................................................................................................
Will Not Recover (First Stage) ..........................................................................................
Will Not Deep Recover (Second Stage) ..........................................................................
Will Not Perform Clearing ................................................................................................
Will Not Air Purge .............................................................................................................
Will Not Drain Oil ..............................................................................................................
Will Not Evacuate (Vacuum) .............................................................................................
Fails Leak Test ..................................................................................................................
Will Not Inject Oil ..............................................................................................................
Will Not Charge .................................................................................................................
Miscellaneous Error Messages .........................................................................................
40
41
42
43
44
45
45
46
47
47
48
49
Service Instructions and Calibration .................................................................. 50
Replacement Compressor (RA20020) Specifications & Service ....................................
Replacement Vacuum Pump (RA20017) Specifications & Service ...............................
Replacement High Pressure Cut-Out Switch (RA19427) .................................................
Replacement Scale Assembly/Magnet (RA20002) ..........................................................
Replacement Manifold Block (RA20018) .........................................................................
Replacement Manifold Solenoid (RA20010) ...................................................................
Replacement Display Board (RA20012) ...........................................................................
Replacement Relay Board (RA20013) ..............................................................................
Replacement Vacuum Relief Check Valve (RA20015) ....................................................
Replacement Manifold Check Valve (RA20016) ..............................................................
Replacement 3/8” High Pressure Tube (RA20005) ..........................................................
50
53
54
55
56
59
60
62
64
65
66
System Wiring ...................................................................................................... 67
Component Wiring ............................................................................................... 68
Wiring Harnesses ................................................................................................. 71
Component Identification ................................................................................... 82
Component Application Chart ............................................................................. 83
Flow Diagrams ...................................................................................................... 84
Effective
09/2007
Page 33
EEAC325A Service Manual
Diagnostics
FUNCTIONAL CHECK
Setup
1. Check to make sure all lines are correctly connected to tank and that all tank valves are open.
2. Connect the unit’s service hoses up to a test tank.
3. Plug unit into correct power source.
4. Turn main power on.
5. Unit will show “SNAP-ON KOOLKARE PLUS”
and “Software Version X.XXX.”
6. Unit will display the Main Menu screen.
7. Press the RIGHT arrow key (AMOUNTS) to
display recovered and charged amounts.
8. Press the LEFT arrow key (NEXT) to display
tank weight, tank temperature, and tank pressure.
9. Verify there is enough refrigerant in the tank for
the unit to function and that the tank temperature
and pressures are within acceptable limits.
10. If any of the above are not acceptable, correct the
problem before continuing.
11. Press the LEFT arrow key (NEXT) to display
the filter amount used.
12. Press the LEFT arrow key (DONE) to exit this
screen.
If low on refrigerant, unit may display “Low
Refrigerant” “Fill Tank.”
Digital Display
RECOVER
VACUUM
AUTO
(ENTER)
CHARGE
SET-UP
INJ OIL
(AMOUNTS)
Left / Right
Arrow Keys
EEAC325A Keypad
Page 34
Up / Down
Arrow Keys
Setup unit to Display Accumulator
Pressure
1. Press the UP or DOWN arrow key to move the
cursor to SETUP.
2. Press the LEFT arrow key (ENTER) to confirm
selection.
3. Press the UP or DOWN arrow key to move cursor to SERVICE MENU.
4. Press the LEFT arrow key (ENTER) to confirm
selection.
5. Press the UP or DOWN arrow key until the number “2” is shown in the first of four places on the
display.
6. Press the LEFT arrow key (ENTER) to confirm
selection.
7. Press the UP or DOWN arrow key until the number “2” is shown in the second of four places on
the display.
8. Press the LEFT arrow key (ENTER) to confirm
selection.
9. Press the UP or DOWN arrow key until the number “0” is shown in the third of four places on the
display.
10. Press the LEFT arrow key (ENTER) to confirm
selection.
11. Press the UP or DOWN arrow key until the number “0” is shown in the fourth of four places on
the display.
12. Display should show “2200.”
13. Press the LEFT arrow key (ENTER) to confirm
selection.
14. From the SERVICE MENU, press the DOWN
arrow key until “Display Accumulator Pressure” is shown on the screen.
15. Press the LEFT arrow key (ENTER) to confirm
selection.
16. Unit will display “Left Changes State, Display
Acc Pressure, No, Right arrow to Exit.”
17. Press the LEFT arrow key so that “No” changes
to “Yes.”
18. Once it says “Yes,” press the RIGHT arrow key
to exit.
19. Unit will show “Display Acc Pressure.”
Effective
09/2007
EEAC325A Service Manual
Diagnostics
20. Press the RIGHT arrow key (CANCEL) twice
to exit.
21. Connect a calibrated gauge to the manifold test
port.
Vacuum
1. Press the UP or DOWN arrow key to move the
cursor to VACUUM.
2. Press the LEFT arrow key (ENTER) to confirm
selection.
3. Unit will display “Checking Pressure.”
4. Press the DOWN arrow key until 3-minute
vacuum is displayed.
5. Press the LEFT arrow key (OK) to pull a vacuum
on the test tank.
6. You will be asked if you want to do a leak test.
Press the RIGHT arrow key (NO) unless the
complaint was for “unit fails leak test.”
7. Unit will display “Vacuum in Progress, Time
Remaining XX.XX, Stop to Pause.”
8. Once the vacuum is complete, the unit will display
“Vacuum Complete, Any Key Exits.”
9. Press the LEFT arrow key to exit.
10. Unit will display the MAIN MENU.
During the Vacuum process, you may hear the
unit purging air, this is normal operation.
Charging Test
1. Press the UP or DOWN arrow key to move the
cursor to CHARGE.
2. Press the LEFT arrow key (ENTER) to confirm
selection.
3. Unit will display “Charge XX.XX, Mode xxxx
Side, Charge Changes Mode, Arrow Key
Change Unit.”
4. Enter 02.55 lbs charge using UP arrow key.
5. Press the LEFT arrow key (OK) to continue.
6. Press the DOWN arrow key until both high and
low lights are lit.
To verify Oil Inject function, you will need to
charge high-side only.
7. Press the LEFT arrow key (NEXT) to select.
8. Press the LEFT arrow key (START). “Charge
in Progress” appears on the display. (“Purging Air Please Wait” may also show on display.)
9. “High and Low Side Charge in Progress Do
Not Disturb” will show on display. When the
unit gets towards the end of the charge, you will
notice that it slows down and then pulses the last
.10 lbs. in. This is done for charging accuracy.
10. When charging is complete, the unit will display
“Charged XX.XX lbs, Press Start to Equalize
Hoses.”
11. Press the LEFT arrow key (START).
12. Unit will display “Disconnect High Side
HoseCouple and Connect the Low Side Hose
and Start A/C Max, Start To Continue.”
13. Close both tank valves and press the LEFT arrow key (OK).
14. Unit will display “Equalizing Hoses Please
Wait.”
15. When hose equalizing is completed, unit will display “Disconnect LS Hose Start to Continue.”
16. Leave all hoses connected to test tank and make
sure that both tank valves are still closed.
17. Press the LEFT arrow key (OK).
18. Unit will display “Clearing Hoses Please Wait.”
19. When clearing is complete, unit will display
“Charge Complete X.XX lbs.”
20. Press the LEFT arrow key to exit.
21. Unit will display the MAIN MENU.
Recovery Test
1.
2.
3.
4.
Make sure that the vacuum pump exhaust
tube and the oil drain tube are in a capture
bottle before starting the recovery test.
Open both tank valves and invert test tank.
Press the UP or DOWN arrow key to move the
cursor to RECOVER.
Press the LEFT arrow key (ENTER) to confirm
selection.
Unit will display “Checking Pressure.”
Continued . . .
Effective
09/2007
Page 35
EEAC325A Service Manual
Diagnostics
FUNCTIONAL CHECK — CONTINUED
5. Once the unit verifies there is enough pressure, it
will then display “Recovery Clearing.”
• When the recovery clearing in done, the unit
will display the “Recovering Progress,
Amount Recovered X.XX.”
• The calibrated test gauge that is connected to
the test port shows the amount of pressure (refrigerant) that is being allowed during the recovery process. It should not exceed 38 psi.
As the refrigerant is recovered, this number will
decrease and eventually go into a negative
(inhg) number.
• When the calibrated low side gauge reaches
“0”, the vacuum pump will start while the compressor is still running. The amount of vacuum
time depends on how long it took for the unit
to complete the recovery for the amount of refrigerant recovered.
• Once the vacuum pump starts, you will notice
that the calibrated test gauge connect to the test
port rises back to “0” inhg*. This is accomplished by opening the oil return and/or pressure feedback solenoid. The reason for this is
to keep the exhaust of the vacuum pump out
of a negative pressure situation so that oil is not
pulled out of the vacuum pump.
*During the Vacuum process the pressure
will float between 3 psi and 3 inhg.
6. When the vacuum pump timer times out, the unit
displays “Recovery in Progress, Recovered
X.XX lbs, Clearing Please Wait.”
7. When Clearing is complete, the unit will display
“Draining Oil, Accumulator Pressure XX,
Please Wait.” (Accumulator Pressure will rise to
16 psi.)
8. After the oil drain is complete, the unit will display “Recovery Complete, Recovered X.XX,
Empty oil drain bottle now.”
9. Press the LEFT arrow key to exit.
10. When the vacuum process is complete, turn off
the Display Accumulator Pressure.
Page 36
To turn off the Display Accumulator
Pressure
1. Press the UP or DOWN arrow key to move the
cursor to SETUP.
2. Press the LEFT arrow key (ENTER) to confirm
selection.
3. Press the UP or DOWN arrow key to move cursor to SERVICE MENU.
4. Press the LEFT arrow key (ENTER) to confirm
selection.
5. Press the UP or DOWN arrow key until the number “2” is shown in the first of four places on the display.
6. Press the LEFT arrow key (ENTER) to confirm
selection.
7. Press the UP or DOWN arrow key until the number “2” is shown in the second of four places on
the display.
8. Press the LEFT arrow key (ENTER) to confirm
selection.
9. Press the UP or DOWN arrow key until the number “0” is shown in the third of four places on the
display.
10. Press the LEFT arrow key (ENTER) to confirm
selection.
11. Press the UP or DOWN arrow key until the number “0” is shown in the fourth of four places on
the display.
12. Display should show “2200.”
13. Press the LEFT arrow key (ENTER) to confirm
selection.
14. From the SERVICE MENU, press the DOWN
arrow key until “Display Accumulator Pressure” is shown on the screen.
15. Press the LEFT arrow key (ENTER) to confirm
selection.
16. Unit will display “Left Changes State, Display
Acc Pressure, Yes, Right arrow to Exit.”
17. Press the LEFT arrow key so that “Yes” changes
to “No.”
18. Once it says ‘No,” press the RIGHT arrow key
to exit.
19. Unit will show “Display Acc Pressure.”
20. Press the RIGHT arrow key (CANCEL) twice
to exit.
Effective
09/2007
Diagnostics
EEAC325A Service Manual
12VDC SOLENOID TEST PROCEDURE
The solenoids that are used in the EEAC325A
unit cannot be tested using the P/N 17012
magnetic solenoid tester.
The solenoids in this unit are activated from a 12VDC
power source and have a duty cycle of 25%. Duty Cycle
is the ratio of solenoid on-time to total cycle time. In this
particular scenario, the solenoid is on 25% (250μs) of the
total cycle and off for 75% (750μs) of the cycle.
When the solenoid is ‘first’ activated, it receives a 12VDC,
125ms pulse to energize (turn on) the solenoid coil. The
solenoid is then cycled on and off rapidly at a 50ms, 25%
duty cycle. Although the power to the solenoid is cycling
ON and OFF, the solenoid actually sustains the “ON”
state because the cycling process is happening so quickly,
the solenoid doesn’t have time to turn off until the power
is completely removed. Using this process to power the
solenoids requires less power and increases the
component’s life expectancy.
The best way to verify solenoid operation is to use an
oscilloscope. Viewing the solenoid’s duty cycle pattern
on the oscilloscope will provide the best information on
how the solenoid coil is performing. Set oscilloscope to
DC mode. Set the time to .2 ms/div and voltage range to
5 volts/div. Attach the scope probe to an energized solenoid. The pattern on the oscilloscope should look similar
to the sample below with amplitude of 12V. If the amplitude is not 12V, check the power supply. If the pattern
is irregular or doesn’t compare to the sample below, replace the solenoid coil.
If an oscilloscope is not available, a digital volt meter may
be used to check power applied to the solenoid. However, do NOT expect to see 12VDC on the DVM. Because most DVM’s use RMS to read voltages, the meter
will read an average voltage of 2.8 VDC due to the continuous 25% on, 75% off cycling of the solenoid.
An LED light may also be used to verify that a solenoid
is receiving power. Attach the leads of the 12VDC LED
light across the solenoid terminals. While watching the
LED, activate the solenoid from the service menu. The
LED should turn-on bright for a moment (initial 12VDC,
125ms activation pulse), then dim considerably when the
25% duty cycle begins.
1 Complete Cycle
Sustain Pulse, 25% Duty Cycle, 1kHz Cycle (low part of pattern is “On” time)
12V
750µs 75%
750µs
25%
250µs
125ms Activation Pulse (not to scale)
Effective
09/2007
Off
250µs
On
25% Duty Cycle
Page 37
EEAC325A Service Manual
Diagnostics
SERVICE CENTER MENU OPTIONS
These are the Service Options at the time of
printing this service manual. Some options
may be added or deleted in future circuit board
revisions and software updates.
Never change the default settings unless directed from the factory. Otherwise the unit
may fail to operate properly.
Never give the programming or service codes
to customers.
Service Menu
At the time of writing this manual, the software
version was 2.017. Software and functions are
subject to change without notification.
To access the Service Menu
1. Press the UP or DOWN arrow key to move the
cursor to SETUP.
2. Press the LEFT arrow key (ENTER) to confirm
selection.
3. Press the UP or DOWN arrow key to move cursor to SERVICE MENU.
4. Press the LEFT arrow key (ENTER) to confirm
selection.
5. Press the UP or DOWN arrow key until the number “2” is shown in the first of four places on the
display.
6. Press the LEFT arrow key (ENTER) to confirm
selection.
7. Press the UP or DOWN arrow key until the number “2” is shown in the second of four places on
the display.
8. Press the LEFT arrow key (ENTER) to confirm
selection.
9. Press the UP or DOWN arrow key until the number “0” is shown in the third of four places on the
display.
10. Press the LEFT arrow key (ENTER) to confirm
selection.
11. Press the UP or DOWN arrow key until the number “0” is shown in the fourth of four places on the
display.
12. Display should show “2200.”
13. Press the LEFT arrow key (ENTER) to confirm.
Page 38
Display will show SERVICE MENU. Press the UP or
DOWN arrow key to scroll though the following service
options:
Maintenance Counter
Production Test
Prepare to Ship
Board Test
Output Test
Service Vacuum
Air Purge Info
Set UL
Display ACC Pressure
Reset Board Memory
Install Routine
Keypad Test
Service Leak Check
Set Tank Tare
Display Pressure
Calibrate Scale
• To confirm choice, press LEFT arrow.
• To cancel choice, press RIGHT arrow.
To Reset Selected Choice
1. To reset the selected choice, press the arrow key
(RESET) once.
2. To enter Service Code “7691,” press the UP or
DOWN arrow key until the number “7” is shown
in the first of four places on the display.
3. Press the LEFT arrow key (ENTER) to confirm
selection.
4. Push the UP or DOWN arrow key until the number “6” is shown in the second of four places on
the display.
5. Press the LEFT arrow key (ENTER) to confirm
selection.
6. Push the UP or DOWN arrow key until the number “9” is shown in the third of four places on the
display.
7. Press the LEFT arrow key (ENTER) to confirm
selection.
8. Push the UP or DOWN arrow key until the number “1” is shown in the fourth of four places on
the display.
9. Display should show “7691.”
10. Press the LEFT arrow key (ENTER) to confirm.
11. Display will show Reset (your Choice).
• Press LEFT arrow key to reset.
• Press RIGHT arrow key to reject
12. Press the RIGHT arrow key (DONE) to exit.
13. Either scroll to the next option by pressing the UP
or DOWN arrow key, or press the RIGHT arrow key (CANCEL) to exit the SERVICE MENU.
14. Press the RIGHT arrow key (CANCEL) to exit
the SETUP MENU.
Effective
09/2007
EEAC325A Service Manual
Diagnostics
OUTPUT STEP TEST
Refer to the 12VDC solenoid test procedure
on page 37 to check solenoid operation during
the output tests.
The output test will turn on or turn off power
to the specified component. Do not perform
any test for an extended time period.
1. To access the Output Test, turn ON unit and proceed to SERVICE MENU.
2. Press the UP or DOWN arrow key to scroll
through the menu choices until “Output Step Test”
is displayed.
3. Press the LEFT arrow key (OK) to continue.
4. Press the LEFT arrow key (NEXT) to select the
component.
5. After the component has been selected, press the
UP or DOWN arrow keys to toggle power ON or
OFF.
6. Press the LEFT arrow key (NEXT) to select next
component.
7. Press the RIGHT arrow key (STOP) to exit.
8. Press the RIGHT arrow key (CANCEL) to exit
the SERVICE MENU.
9. Press the RIGHT arrow key (CANCEL) to exit
the SETUP MENU.
OUTPUT STEP TEST
Component Order Energized Component
Effective
09/2007
1
Recycle Solenoid
2
Vacuum Solenoid
3
LS Inlet Solenoid
4
HS Inlet Solenoid
5
Oil Return Solenoid
6
Oil Drain Solenoid
7
Vacuum/Recover Solenoid
8
Oil Inject Solenoid
9
Tank Fill Solenoid
10
Recover Solenoid
11
LS Charge Solenoid
12
HS Charge Solenoid
13
Air Purge Solenoid
14
HS Discharge Solenoid
15
Normal Discharge Solenoid
16
Vacuum Pump
17
Compressor
18
Fan
19
Light
20
High Side LED
21
Low Side LED
22
Light
DEPRESSURIZING UNIT
Always wear safety goggles when working
with refrigerants. Contact with refrigerant
can cause eye injury. Disconnect lines and
hoses with extreme caution! Pressurized refrigerant may be present in lines and hoses.
Always point lines and hoses away from you
and anyone nearby.
Always unplug the station from the power
source before removing any of the shrouding
or beginning any service work.
Unit is Functional
1. Perform Recovery function.
2. Close Liquid valve on ISV.
3. Turn unit off when oil drain error is displayed.
4. The only refrigerant present may be in the vapor
hose between the ISV and manifold block.
Unit is NOT Functional
1. Disconnect the high and low side service hoses
from vehicle. Make sure the coupler valves are
closed.
2. Disconnect the fill hose from the source tank.
3. Open the unit door and close the (3) ISV valves.
4. Connect an auxiliary recovery unit up to the manifold service port.
5. Start the auxiliary recovery unit and allow it to pull
a 13” vacuum on the unit being serviced.
6. When the unit is pulled down to this level, turn off
the auxiliary recovery unit, and disconnect from
the manifold service port.
7. Carefully disconnect or remove components as
there may be refrigerant present at these fittings.
Page 39
EEAC325A Service Manual
Diagnostics
TROUBLESHOOTING
Will Not Power-Up, No Display
1. Verify that unit is not plugged into an extension
cord. If it is, remove extension cord.
2. Verify AC power cord is properly connected to
a good AC power source at receptacle. Verify
that it is wired correctly and has a good ground.
3. Turn ON the main power switch. Verify that line
voltage is present at the input and output terminals of the switch.
• If line voltage is not present at power switch
input, check connections between power
switch and AC plug.
• If line voltage is present at power switch input,
but not at output with switch turned ON, replace power switch.
• If line voltage is present at both input and output of switch, proceed to next step.
4. Verify line voltage is present across pins 2 and 3
of connector J1 on the relay board.
• If line voltage is present, proceed to next step.
• If line voltage is not present, check connections between the power switch and connector J1.
5. If unit does not power up, check if the 15A circuit breaker (located on back of unit) has tripped.
15A Breaker Not Tripped
1. Switch off unit and unplug AC power cord from
receptacle.
3. Perform the following voltage checks:
• Verify line voltage is present across pins 3 and
4 of connector J3 on the relay board.
• If line voltage is not present, check for continuity between the 15A circuit breaker and J3
on the relay board. Repair as needed.
• If line voltage is present, replace the relay
board.
4. If all the proceeding steps fail to repair the problem, replace the display/control board.
15A Breaker Tripped
1. Switch off unit and reset circuit breaker. Switch
unit back on. If breaker trips after reset and AC
power has been tested good, the circuit breaker
needs to be replaced.
2. If breaker trips again after being replaced, switch
off unit and unplug all connectors on the relay board
except J1 (AC In) and J3 (Circuit Breaker).
Switch unit back on.
• If circuit breaker trips again, replace relay
board.
• If the circuit breaker doesn’t trip, turn off
power, plug-in one connector at a time, and
turn back on. Keep doing this until the circuit
breaker trips. Check all components associated with the last connector attached to the
relay board.
2. Check the 15A breaker for continuity.
• If there is no continuity, replace circuit breaker.
• If there is continuity, plug the AC power cord
into the receptacle and switch unit on. Continue to next step.
Page 40
Effective
09/2007
Diagnostics
EEAC325A Service Manual
Will Not Tank Fill
Compressor Running:
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
10. Check the compressor for suction and discharge
performance.
11. Remove the filter and inspect all fittings and gaskets to verify that no obstructions exist. Replace/
repair gaskets as needed and reinstall filter.
12. Verify that the scale is unobstructed and calibrated.
3. Verify the tank hoses are properly connected and
threaded completely onto the ISV fittings.
4. Verify the ISV is not full or does not have excessive pressure. If excess pressure cannot be reduced with purging air, the refrigerant may be contaminated and should be handled appropriately.
5. Verify the fill hose is properly connected and
threaded completely onto the source tank fitting.
Check quick-seal on tank fill hose.
6. Verify that there is a minimum of 8 pounds (3.6
kilograms) of refrigerant in the source tank.
7. Verify the Tank Fill and Normal Discharge solenoids are receiving power and opening properly.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay board.
• Verify the solenoid coil is opening the solenoid
properly.
• Verify the operation of the Tank Fill check
valve—replace as needed.
The Tank Fill solenoid is controlled to maintain
35 psi in the accumulator.
8. Check the Power Charge, Recover, Oil Return, Oil
Drain, Deep Recover, and High-Side Clear solenoids for bleed-through—repair as needed.
Compressor does not run:
1. Check for proper power source, check circuit
breaker and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Verify that the ground wire between the
compressor’s electrical box and chassis ground is
securely fastened.
4. Check for 110 volts to the compressor.
• If there is no voltage to the compressor’s start
components, proceed to next step.
• If voltage is present at the compressor, jumper
the thermal overload. If the compressor runs,
check the compressor amp draw. If it is drawing locked rotor amps or not running, replace the
compressor. If the compressor is cool and
drawing low amperage, replace the thermal
overload.
5. Check for 110 volts from the relay board on connector J6, pins 3 and 4.
• If voltage is present, check wiring between the
relay board and the compressor’s start components. Repair as needed.
• If voltage is not present, replace the relay board.
• If after replacing the relay board, voltage is still
not present, replace the display/control board.
6. Perform functional check and recalibrate unit.
9. Check the Clearing Discharge check valve for
bleed-through—repair as needed.
Effective
09/2007
Page 41
EEAC325A Service Manual
Diagnostics
Will Not Recover (First Stage)
Compressor running:
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. Verify the service hoses are properly attached to
the unit without any restrictions and coupler valves
are open.
3. Verify that ISV valves are open and tank hoses
are properly connected and threaded completely
onto the ISV fittings.
4. Verify the ISV is not full or does not have excessive pressure. If excess pressure cannot be reduced with purging air, the refrigerant may be contaminated and should be handled appropriately.
5. Verify that the Normal Discharge, Recover, HighSide Inlet and Low-Side Inlet solenoids are receiving power and opening properly.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
The Recover solenoid is controlled to maintain 35 psi max in the accumulator.
6. Check the High-Side Charge, Low-Side Charge,
Oil Inject, Oil Return, Vacuum, High-Side Clear,
Tank Fill, and Power Charge solenoids for bleedthrough and proper operation —repair as needed.
7. Check the compressor for suction and discharge
performance.
Page 42
8. Remove the filter and inspect all fittings and gaskets to verify that no obstructions exist. Replace/
repair gaskets as needed and reinstall filter.
9. Verify that the accumulator transducer is functioning properly.
10. If all the proceeding steps fail to repair the problem, replace the display/control board.
Compressor does not run:
1. Check for proper power source, check circuit
breaker and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Verify that the ground wire between the
compressor’s electrical box and chassis ground
is securely fastened.
4. Check for 110 volts to the compressor.
• If there is no voltage to the compressor’s start
components, proceed to next step.
• If voltage is present at the compressor, jumper
the thermal overload. If the compressor runs,
check the compressor amp draw. If it is drawing locked rotor amps or not running, replace
the compressor. If the compressor is cool and
drawing low amperage, replace the thermal
overload.
5. Check for 110 volts from the relay board on connector J6, pins 3 and 4.
• If voltage is present, check wiring between the
relay board and the compressor’s start components. Repair as needed.
• If voltage is not present, replace the relay
board.
• If after replacing the relay board, voltage is still
not present, replace the display/control board.
Effective
09/2007
EEAC325A Service Manual
Diagnostics
Will Not Deep Recover (Second Stage)
Vacuum pump running:
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Verify the service hoses are properly attached to
the unit without any restrictions and coupler valves
are open.
8. Check the Clearing Discharge checkvalve for
bleed-through—repair as needed.
9. Check for suction at the intake of the pump. If
there is none, replace the pump.
10. Remove the filter and inspect all fittings and gaskets to verify that no obstructions exist. Replace/
repair gaskets as needed and reinstall filter.
11. Verify that the accumulator transducer is functioning properly.
4. Verify that ISV valves are open and tank hoses
are properly connected and threaded completely
onto the ISV fittings.
12. If all the proceeding steps fail to repair the problem, replace the display/control board.
5. Verify the ISV is not full or does not have excessive pressure. If excess pressure cannot be reduced with purging air, the refrigerant may be contaminated and should be handled appropriately.
Vacuum pump does not run:
1. Check for proper power source, check circuit
breaker and check electrical connectors for damage or corrosion.
6. Verify that the Normal Discharge, High-Side Inlet, Low-Side Inlet, Vacuum, Deep Recover, and
Power Charge (see note) solenoids are receiving
power and opening properly.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
2. If the unit is being run through an extension cord,
eliminate its use.
The Power Charge solenoid is controlled to
maintain 0 to 3 psi in the accumulator.
7. Check the High-Side Charge, Low-Side Charge,
Oil Inject, Oil Return, Recover, Tank Fill and
High-Side Clear solenoids for bleed-through and
proper operation—repair as needed.
3. Check for 110V at the vacuum pump connector,
pins 2 and 3.
• If voltage is present, replace vacuum pump
assembly.
• If voltage is not present, continue to next step.
4. Check for 110 volts from the relay board on connector J6, pins 1 and 2.
• If voltage is present, check wiring between the
relay board and the vacuum pump. Repair as
needed.
• If voltage is not present, replace the relay
board.
• If after replacing the relay board, voltage is still
not present, replace the display/control board.
5. Perform functional check and recalibrate unit.
Effective
09/2007
Page 43
EEAC325A Service Manual
Diagnostics
Will Not Perform Clearing
Compressor Running:
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
9. Remove the filter and inspect all fittings and gaskets to verify that no obstructions exist. Replace/
repair gaskets as needed and reinstall filter.
10. If all the proceeding steps fail to repair the problem, replace the display/control board.
3. Verify the tank hoses are properly connected and
threaded completely onto the ISV fittings.
Compressor does not run:
1. Check for proper power source, check circuit
breaker and check electrical connectors for damage or corrosion.
4. Verify the ISV is not full or does not have excessive pressure. If excess pressure cannot be reduced with purging air, the refrigerant may be contaminated and should be handled appropriately.
2. If the unit is being run through an extension cord,
eliminate its use.
5. Verify the Normal Discharge, HS Clear, and Oil
Return solenoids are receiving power and opening properly.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
• Verify the operation of the Tank Fill check
valve—replace as needed.
6. Check the Power Charge, Recover, Oil Drain,
Deep Recover, and Tank Fill solenoids for bleedthrough—repair as needed.
7. Check the Normal Discharge check valve for
bleed-through—repair as needed.
8. Check the compressor for suction and discharge
performance.
3. Verify that the ground wire between the
compressor’s electrical box and chassis ground
is securely fastened.
4. Check for 110 volts to the compressor.
• If there is no voltage to the compressor’s start
components, proceed to next step.
• If voltage is present at the compressor, jumper
the thermal overload. If the compressor runs,
check the compressor amp draw. If it is drawing locked rotor amps or not running, replace
the compressor. If the compressor is cool and
drawing low amperage, replace the thermal
overload.
5. Check for 110 volts from the relay board on connector J6, pins 3 and 4.
• If voltage is present, check wiring between the
relay board and the compressor’s start components. Repair as needed.
• If voltage is not present, replace the relay
board.
• If after replacing the relay board, voltage is still
not present, replace the display/control board.
6. Perform functional check and recalibrate unit.
Page 44
Effective
09/2007
Diagnostics
Will Not Air Purge
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Check the 0.028” orifice between the ISV and
air purge solenoid for debris.
• If the orifice is contaminated or defective, repair or replace as needed.
• If the orifice is operational, proceed to the next
step.
4. Verify the Air Purge solenoid is receiving power
and opening properly.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
5. Verify that the tank temperature probe and pressure transducer are functioning properly.
EEAC325A Service Manual
Will Not Drain Oil
For dye usage, please refer to Limited Warranty Statement.
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Verify the Oil Drain solenoid is receiving power
and opening properly.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
4. Verify that the accumulator transducer is functioning properly.
5. If the proceeding steps fail to repair the problem,
replace the display/control board.
6. If the proceeding steps fail to repair the problem,
replace the display/control board.
Effective
09/2007
Page 45
EEAC325A Service Manual
Diagnostics
Will Not Evacuate (Vacuum)
Vacuum pump running:
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
9. Check plumbing between vacuum pump and service hoses for loose connections or fittings.
10. Replace vacuum pump.
2. If the unit is being run through an extension cord,
eliminate its use.
11. If all the proceeding steps fail to repair the problem, replace the display/control board.
3. Verify the service hoses are properly attached to
the unit (valves open) without any restrictions.
Vacuum pump does not run:
1. Check for proper power source, check circuit
breaker and check electrical connectors for damage or corrosion.
4. Be sure the two plastic vacuum lines are snug at
both ends and not obstructed. Check the pneumatic fittings for leaks.
5. Check for proper vacuum oil level in the vacuum
pump sight glass (oil level should be in the center
of the sight glass while the pump is running). Replace vacuum pump oil if necessary.
6. Check for suction at the intake of the pump. If
there is none, replace the pump.
7. Verify that the Vacuum, Low-Side Inlet and HighSide Inlet solenoids are receiving power and
opening properly.
• If not receiving power, check continuity of the
wiring between the solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
8. Check the High-Side Charge, Low-Side Charge,
Oil Inject, Recover, and Deep Recover solenoids
for bleed-through and proper operation—repair
as needed.
Page 46
2. If the unit is being run through an extension cord,
eliminate its use.
3. Check for 110V at the vacuum pump connector,
pins 2 and 3.
• If voltage is present, replace vacuum pump
assembly.
• If voltage is not present, continue to next step.
4. Check for 110 volts from the relay board on connector J6, pins 1 and 2.
• If voltage is present, check wiring between the
relay board and the vacuum pump. Repair as
needed.
• If voltage is not present, replace the relay
board.
• If after replacing the relay board, voltage is still
not present, replace the display/control board.
5. Perform functional check and recalibrate unit.
Refer to vacuum pump service bulletin.
Effective
09/2007
Diagnostics
Fails Leak Test
EEAC325A Service Manual
Will Not Inject Oil
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Verify that the High-Side and Low Side Inlet solenoids are receiving power and opening properly.
• If not receiving power, check continuity of the
wiring between the solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
3. Verify the high-side service hose is properly attached to the unit without any restrictions and coupler valve is open.
4. Check the High-Side Charge, Low-Side Charge,
Oil Inject, Recover, and Vacuum solenoids for
bleed-through—repair as needed.
5. Verify that the low-side pressure transducer is
functioning properly.
6. If vacuum can not be maintained, use a refrigerant detector to check all plumbing hoses and fittings for leaks—repair as needed. Refer to the
Leak Test flow diagram illustrated in the Flow
Charts section.
7. If all the proceeding steps fail to repair the problem, replace the display/control board.
Effective
09/2007
4. Verify a deep vacuum has been pulled on the system.
5. Verify the oil injector bottle is securely attached
and contains an appropriate amount of oil.
6. Verify the Oil Inject solenoid is receiving power
and opening properly when the Oil Inject Button
is pressed on the keyboard.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
7. Check the High-Side Inlet and High-Side Charge
solenoids for bleed-through—repair as needed.
8. If the proceeding steps fail to repair the problem,
replace the display/control board.
Page 47
EEAC325A Service Manual
Diagnostics
Will Not Charge
There is no component that "pumps" refrigerant into a system during the charge process.
The refrigerant flows in by a pressure transfer.
If the system is not in a vacuum, this unit will
not charge.
1. Check for proper power source, check circuit
breakers and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Verify the service hoses are properly attached to
the unit without any restrictions and coupler valves
are open.
4. Verify a deep vacuum has been pulled on the system being charged.
5. Check that all ISV hoses are properly installed and
valves are open. Also verify that the scale is unobstructed.
6. If “INSUFFICIENT REFRIG AVAILABLE” is
on the display, verify that there is a minimum of 8
pounds (3.6 kilograms) of refrigerant in the tank.
If there is enough refrigerant in the tank check scale
calibration and re-calibrate.
7. Verify that the control module has accepted the
programmed amount. Test the operation of the
keypad; replace if necessary.
8. Verify the Low-Side Charge and/or High-Side
Charge solenoids (depending on user input) are
receiving power and opening properly.
• If not receiving power, check the continuity of
the wiring between solenoid and relay board—
repair as needed.
• If the wiring is correct and no power is being
applied to the solenoid, replace the relay
board.
• Verify the solenoid coil is opening the solenoid
properly.
9. Check the Low-Side Inlet, High-Side Inlet, Oil
Inject, and Power Charge solenoids for bleedthrough and proper operation—repair as needed.
If the unit does not complete a full charge, the
compressor, power charge and high-side clear
solenoids are activated, then stop to build
tank pressure.
10. If the proceeding steps fail to repair the problem,
replace the display/control board.
Slow Charge:
1. Check and ensure that there is a good vacuum in
the vehicle being tested.
2. Verify that there is sufficient pressure in ISV to
transfer refrigerant.
3. Ensure chargeable weight is greater than desired
charge.
4. Verify the charge couplers are completely open
and the vehicle ports are actuated.
5. Check for debris in any of the charging circuit
solenoids. Clean or replace if necessary.
Page 48
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09/2007
Diagnostics
EEAC325A Service Manual
Miscellaneous Error Messages
Low Recover Pressure, Check Connections
During the recovery process, the unit is sensing less than
10 psi at the Low-Side Pressure Transducer. Verify all
connections before continuing.
Serial Number Error
The 10-digit serial number for the filter is invalid, entered
incorrectly, or the filter-drier has already been used in
the unit.
Pressure too High for Vacuum
If this message occurs during the evacuation process, the
unit is sensing greater than 10 psi at the Low-Side Pressure Transducer. Perform recovery before continuing.
Oil Drain Error 1
The ACC Pressure Transducer is reading accumulator
pressure less than 16 psi. (Verify the Recycle solenoid
is open and Oil Drain solenoid is closed.)
If this message occurs during the clearing process, the
unit is sensing greater than 10 psi at “any” pressure transducer.
Oil Drain Error 2
The ACC Pressure Transducer is reading accumulator
pressure greater than 9 psi, or accumulator pressure
change is less than 0.15 psi/sec. (Verify the Recycle solenoid is closed and Oil Drain solenoid is open.)
Insufficient Refrigerant Available
This message is displayed if the charge amount entered
will leave less than 3 lbs. (1.36 kg) of refrigerant in the
ISV after charge. Add additional refrigerant to the tank.
Insufficient Refrigerant for Flush
There is less than 10 lbs. of refrigerant in ISV. To perform the flush routine, there must be more than 10 lbs.
of refrigerant available in the tank. Add refrigerant.
Insufficient ISV Pressure for Test
There is less than 50 psi of pressure in the ISV. To perform the leak test routine, the tank pressure must be higher
than 50 psi.
Calibration Error/Calibration Rejected
When the calibration check is performed, the unit measures the scale weight before and after the calibration
weight has been attached to the scale. If the difference
in weight is 1.18 ± 0.03 lbs., the calibration check will
pass. However, if the difference is anything else, the
Calibration Error/Calibration Rejected message will be
displayed.
UL Cal Error, Check Cal Weight
UL calibration failure has occurred. Verify that scale is
unobstructed and calibration weight is 43 lbs. for
Worthington ISV, or 45 lbs. for the Aircom ISV. Scale
or control board not responding correctly.
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09/2007
Flush Filter Blocked
The Low-Side Pressure Transducer is reading pressure
greater than 20 psi.
Refrigerant Management – Invalid Password
Password not entered correctly. Refrigerant Management password is “8635.”
XXX lb Filtered, Lockout in XX.XX, Replace
Filter Now?
This is a warning that 100 lbs. (45 kg) or more of refrigerant has been recovered since the last filter-drier
change. Unit will lockout at 150 lbs.
XXX lb Filtered, Recover Locked Out, Replace
Filter Now?
150 lbs. of (68 kg) or more of refrigerant has been recovered since the last filter-drier change. Replace filter-drier to continue Recovery.
Vacuum Pump Oil Time XX:XX, Change Oil?
The vacuum pump has run for 10 or more hours without
an oil change.
Leak Test Failed
A leak was detected. Ensure that a thorough recovery
and evacuation of the system is performed.
Page 49
EEAC325A Service Manual
Diagnostics
SERVICE INSTRUCTIONS & CALIBRATION
Replacement Compressor (RA20020) Specifications & Service
Specifications
Compressor Fittings
Make:
Voltage:
Capacity (BTU/HR):
Running Amps:
Speed:
Locked Rotor Amps:
Oil Charge Capacity:
Refrigerants:
POE Oil Type:
Weight w/oil:
Replacements:
1/3 HP Cubigel
115V / 60Hz
5821
8.4A
3500 RPM
30.0A
Initial - 13.5 oz
Recharge - 11.8 oz
R-12, 22, 500, 502, 134a
404a
ISO 22
23.8 lbs.
110V - RA20020
Oil Return
(Intake)
Suction
Discharge
Adding Oil to Compressor
Troubleshooting Compressor
Due to the configuration of the Cubigel suction and discharge fittings, there is no easy method of checking or
removing oil from the compressor.
Compressor Will Not Run
The following procedure is the recommended method
for changing oil in the Cubigel compressor:
1. Connect a refrigerant supply tank to one of the
compressor’s suction ports.
2. Connect a portable recovery unit to the other suction port.
3. Cap the discharge port on the compressor.
4. Run the recovery unit to completely flush all oil
from the compressor.
5. Disconnect everything and add 13.5 oz. of new
oil (ISO 22) to the compressor.
Page 50
1. Check for proper power source, check circuit
breaker and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Verify that the ground wire between the
compressor’s electrical box and chassis ground
is securely fastened.
4. Check for 110 volts to the compressor.
• If there is no voltage to the compressor’s start
components, proceed to next step.
• If voltage is present at the compressor, jumper
the thermal overload. If the compressor runs,
check the compressor amp draw. If it is drawing locked rotor amps or not running, replace
Effective
09/2007
EEAC325A Service Manual
Diagnostics
the compressor. If the compressor is cool and
drawing low amperage, replace the thermal
overload.
5. Check for 110 volts from the relay board on connector J6, pins 3 and 4.
• If voltage is present, check wiring between the
relay board and the compressor’s start components. Repair as needed.
• If voltage is not present, replace the relay
board.
• If after replacing the relay board, voltage is still
not present, replace the display/control board.
6. Perform functional check and recalibrate unit.
6. Shut off the compressor. The suction and discharge values should hold for 30 seconds to one
minute. If not, proceed to step-7, then repeat test.
If no improvement, replace the compressor.
7. If the compressor has weak suction or discharge,
check the oil level and add oil if necessary. If the
oil level is okay or oil was added with no improvement, replace the compressor.
Removing the Compressor
1. Disconnect the unit from its power source.
2. Remove the left side oil bottle from the unit.
3. Remove the left side panel.
Suction and Discharge Pressure Test
4. Depressurize the unit.
1. Disconnect all fittings from the compressor.
5. Disconnect the copper line from the compressor.
2. Cap the intake fitting.
3. Install a low side gauge on the suction fitting.
The fitting used on the suction port is a 3/8”
compression fitting. Use the appropriate
fitting with an R-134a manifold set.
6. Disconnect the two black tubes from the compressor.
7. Remove and save the four nuts and bolts that secure the compressor into the unit.
8. Disconnect the wires from the main wire harness.
4. Install a high pressure gauge on the discharge fitting.
The fittings used on the discharge port require
an o-ring fitting to seal. Use a 120063 hose
(1/4” flare o-ring X 1/2” ACME Q.S.) with an
R-134a manifold set.
5. Start the compressor and monitor the readings.
The discharge pressure should build to 250 psi
(17.24 bar). The compressor should pull a 25”
(.85 bar) vacuum.
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09/2007
9. Remove the compressor from the unit.
10. Remove the compressor electrical box cover by
releasing the spring clamp that holds it on.
11. Disconnect the wires from the electrical components.
Capacitor may still be energized; remove
wires with caution.
Page 51
EEAC325A Service Manual
Diagnostics
Replacement Compressor (RA20020) Specifications & Service (continued)
12. Disconnect the two black tubes from the main
block, and discard.
RETAINER
COMP.
ELEC. BOX
Installing the Replacement Compressor
(Refer to Figures 1 & 2 during this installation)
PROTECTOR
RELAY
1. Install the four rubber mounts (included in kit) into
the base of the compressor.
2. Install the electrical components.
SCREW
CAPACITOR
LEADS
3. Connect wiring to the compressor electrical components as shown in Figure 1.
CAPACITOR
4. Install the compressor electrical box cover, and
secure with the existing spring clamp.
Figure 1 – Compressor Wiring
5. Place the compressor into the unit.
6. Place one steel sleeve (included in kit) into each
of the four rubber mounts in the base of the compressor.
Manifold
Assembly
7. Secure the compressor into place with the existing four nuts and bolts.
15”
8. Reconnect the compressor to the wire harness.
9. With the o-rings in place, connect the copper line
to the discharge side of the unit.
10. Refer to Figure 2 and replace the two black tubes
that connect the compressor to the main block
(use tubing from kit RA20005 and ferrules from
kit RA20006).
11. Plug unit into power source, perform a function
test, and check for any leaks.
12. Replace all shrouding and oil bottle.
Page 52
12”
Compressor
538469
2X 105358
Use Loctite® 242
or equivalent on
threads
Figure 2 – Compressor Tubing Connections
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09/2007
EEAC325A Service Manual
Diagnostics
Replacement Vacuum Pump (RA20017) Specifications & Service
Specifications
Make:
Volts:
Frequency:
Running Amps:
Locked Rotor Amps:
Flow Rate:
Oil Capacity:
Oil Type:
1/3 HP 2-Stage Pump
110V
60Hz
4.5 A
Call Tech Support
3 cfm
7.4 oz - 219 ml
Premium Vacuum Pump Oil
Vacuum Pump Not Running
1. Check for proper power source, check circuit
breaker and check electrical connectors for damage or corrosion.
2. If the unit is being run through an extension cord,
eliminate its use.
3. Check for 110V at the vacuum pump connector,
pins 2 and 3 (see figure below).
• If voltage is present, replace vacuum pump
assembly.
• If voltage is not present, continue to next step.
4. Check for 110 volts from the relay board on connector J6, pins 1 and 2.
• If voltage is present, check wiring between the
relay board and the vacuum pump. Repair as
needed.
• If voltage is not present, replace the relay
board.
• If after replacing the relay board, voltage is still
not present, replace the display/control board.
5. Perform functional check and recalibrate unit.
Removing the Vacuum Pump
1. Disconnect the unit from its power source.
2. Remove right side oil bottle.
3. Remove hood and right side panel.
4. Depressurize the unit.
5. Remove the two existing nylon lines from the
vacuum pump.
6. Remove and save the bolts that fasten the vacuum
pump to the unit.
7. Disconnect the vacuum pump connector from the
main harness.
8. Remove the vacuum pump from the unit.
Installing the Replacement Vacuum Pump
1. Insert the new vacuum pump into the unit.
2. Secure the vacuum pump to the unit with the bolts
saved from the old pump.
3. Connect the electrical connector from the vacuum
pump into the unit’s main harness.
4. Reconnect the two existing nylon lines.
5. Remove the brass plug from the vacuum pump oil
fill port.
6. Add 5 oz. of oil to the vacuum pump.
7. Plug unit into power source, and perform the steps
to start the vacuum pump.
8. While the vacuum pump is running, add more oil
to the correct fill level in the sight gauge.
9. Replace the brass plug in the fill port.
10. Perform a function test, and check for any leaks.
11. Replace all shrouding and oil bottle.
BLACK
HOT
NEUT
GND
WHITE
FILL PORT
GREEN
SIGHTGLASS
Vacuum Pump Assembly
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09/2007
DRAIN
Page 53
EEAC325A Service Manual
Diagnostics
Replacement High Pressure Cut-Out Switch (RA19427)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
The high pressure cut-out is a normally closed sensor
designed to shut off the unit if the discharge pressure
reaches 435 ± 10 psi. The switch will reset and close
at 320 ± 20 psi.
The pressure is detected through an orifice in the base
of the sensor. In the normal setting (less than 435 psi on
the orifice), the 1 and 3 contacts are closed. When 435
psi is introduced to the orifice, the pressure forces up
on the drive pin, which then forces the center contact to
disengage the 1 and 3 contacts and engage the 1 and 2
contacts. When this happens, the unit halts operation
and displays a high pressure warning on the display.
Brown Wire
Brown Wire
Replacement Instructions
Follow these steps to replace the high pressure cut-out
switch on your unit.
1. Close the tank valves and depressurize the unit.
2. Turn off the MAIN POWER switch, and unplug
the unit from the power source.
3. Remove the panel(s) or shroud to access the manifold block.
4. Disconnect the wires from the high pressure cutout switch.
5. Carefully remove the high pressure cut-out switch.
6. Clean the fitting by wiping away dirt, grease, and
oil. Apply thread sealant to only the external pipe
threads of the fittings. DO NOT apply thread
sealant to any internal threads.
Thread sealant contains ADHHM-128 anaerobic adhesive and methacrylic ester. If there is
skin contact with the sealant, thoroughly was
the skin with soap and water.
7.
8.
9.
10.
11.
12.
Install the new high pressure cut-out switch.
Reconnect the wires to the new switch.
Plug the unit into the power source.
Open the tank valves.
Operate the unit and check for leaks.
Replace the panel(s) or shroud.
Troubleshooting the High Pressure Cut-Out
High Pressure Cut-Out discontinues operation prematurely.
1. Verify that there are no discharge obstructions.
2. Replace the high pressure cut-out.
High Pressure Cut-Out Switch
Page 54
High Pressure CutOut does not discontinue operation of unit at or below designed pressure.
1. Check the wiring.
2. Replace the high pressure cut-out.
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09/2007
EEAC325A Service Manual
Diagnostics
Replacement Scale Assembly/Magnet (RA20002)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
If scale assembly and UL circuit are not
calibrated, scale can overfill the tank, causing
possible explosion and/or vehicle overcharge.
Instructions
These instructions outline the steps to replace the scale
assembly.
Removing the Scale Assembly
1. Disconnect the unit from its power source.
2. Remove the right side oil bottle from the unit.
3. Remove the hood and right side panel.
4. Close all three (3) tank valves.
5. Depressurize the unit.
6. Disconnect the liquid hose and vapor hose from
the tank.
7. Disconnect the wires from the air purge solenoid,
tank temperature probe, and pressure transducer.
8. Remove the two (2) bolts that secure the tank to
the scale.
9. Remove the tank from the scale.
10. Remove the four (4) nuts that hold the scale in
place.
11. Remove the ground wire connected to the center
divider of the unit and the harness connected to
the relay board.
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09/2007
Installing the Replacement Scale Assembly
1. Connect the ground wire from the scale to the
center divider.
2. Install the scale into the unit and secure with four
(4) nuts.
3. Thread wire through the center panel, and connect to the relay board.
4. Connect the unit to its power source.
5. Turn the unit on to begin calibration steps.
Perform the calibration steps outlined on page63 under section “Installing the Replacement Relay Board.”
6. Install the tank on the scale, and secure with two
(2) bolts.
7. Reconnect the air purge solenoid, tank temperature probe, and pressure transducer wires.
8. Reconnect the liquid hose and vapor hose to the
tank.
9. Open all three (3) tank valves.
10. Perform a function test, and check for leaks.
11. Replace all shrouding and oil bottle.
Page 55
EEAC325A Service Manual
Diagnostics
Replacement Manifold Block (RA20018)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
Removing the Manifold Block
1. Disconnect the unit from its power source.
15. Remove the bolt located between the two solenoids on the top right side.
16. Remove the liquid, vapor, and tank fill hoses from
the block and save.
Installing the Replacement Manifold Block
(Refer to Figures 1 & 2 during this installation)
1. Install the existing liquid, vapor, and tank fill hoses
into the new block.
2. Install the existing bolt into the hole between the
two solenoids on the top right side.
2. Remove the left side oil bottle from the unit.
3. Install the existing bolt into the hole in the left corner under the block.
3. Remove the hood and left side panel.
4. Reconnect all wiring as shown in Figure 1.
4. Close all three tank valves.
5. Reconnect the vacuum and vacuum bypass lines
using new ferrules (use ferrules from kit
RA20007).
5. Depressurize the unit.
7. Disconnect the three lines from the compressor.
6. Install a new tube for the oil drain line, and connect to the oil drain solenoid (use RA20005 tubing kit [cut to length], and ferrules from kit
RA20006).
8. Disconnect the compressor oil return tube from
the block and discard.
7. Install a new tube for the compressor suction tube,
and connect it to the block.
9. Disconnect the compressor suction tube from the
block and discard.
8. Reconnect the existing compressor discharge line
to the block.
10. Remove the compressor discharge line from the
block and save.
9. Reconnect the existing three lines to the compressor.
11. Disconnect the oil drain line from the oil drain
solenoid.
10. Reconnect the existing tank liquid and vapor hoses
to the block.
12. Disconnect the vacuum and vacuum bypass lines.
11. Open all three tank valves.
13. Disconnect all wires from the block.
12. Plug unit into power source, perform a function
test, and check for any leaks.
14. Remove the bolt located in the left corner under
the block.
13. Replace all shrouding and oil bottle.
6. Disconnect the tank liquid and vapor hoses from
the tank.
Page 56
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09/2007
EEAC325A Service Manual
Diagnostics
Figure 1 – Electrical Connections to Manifold Block
Connection
Label
Harness
539992
RB8
HPS
539991
COMP
64
66
76
539989
RB10
GND (2x)
PUMP
FAN
FAN (2x)
COMP
539990
RB9
RB6
CB (2x)
GND
74
75
539994
RB7
PSJ1
PSJ2
539927
RB11
RB13
S1
S2
S5
S6
S10
S11
S15
539987
RB14
S3
S4
S7
S8
S9
S12
S13
S14
539993
GND
25
539988
RB1
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09/2007
Connection
Relay Board J4
High Pressure Switch
PT20
S5
S6
S7
S10
S3
S12
S1
539989 Comp
Comp Start Relay
Compressor Thermal
Compressor Ground
Relay Board J6
Unit Ground Stud
Vacuum Pump Pigtail
Fan Ground
Fan Terminals
539991 Comp
S11
S2
S4
Relay Board J3
Relay Board J1
Circuit Breaker
Unit Ground Stud
Power Switch Terminal 1
Power Switch Terminal 2
PT21
S9
S8
Manifold Assembly (Top View)
HPS
Relay Board J2
Power Supply J1
Power Supply J2
Relay Board J18
Relay Board J17
Normal Discharge Solenoid
High Side Clear Solenoid
High Side Charge Solenoid
Low Side Charge Solenoid
Recover Solenoid
Tank Fill Solenoid
Air Purge Solenoid
Relay Board J11
Oil Inject Solenoid
Deep Recover Solenoid
High Side Inlet Solenoid
Vacuum Solenoid
Low Side Inlet Solenoid
Power Charge Solenoid
Oil Return Solenoid
Oil Drain Solenoid
S13
S14
Manifold Assembly (Front View)
Unit Ground Stud
Power Cord Bracket
Relay Board J7
All wires must be clear of moving parts, pinch
points, and sharp edges.
Page 57
Page 58
BLUE SERVICE HOSE
ROUTE THROUGH HOLES
IN SIDE SUPPORT
RED SERVICE HOSE
ROUTE THROUGH HOLES
IN SIDE SUPPORT
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
BLUE TUBE FROM
LOW SIDE GAUGE
BLACK TANK FILL HOSE
ROUTE THROUGH HOLE
IN SIDE SUPPORT
RED TUBE FROM
HIGH SIDE GAUGE
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
CUT END OF TUBE AT 45° AND
INSERT TO BOTTOM OF
BOTTLE. CABLE TIE TUBE TO
HOLE IN VACUUM PUMP
SHELF TAB WITH (1) 535876
USE LOCTITE 242 OR EQUIVALENT
ON THREADS
USE LOCTITE 242
OR EQUIVALENT
ON THREADS
VACUUM PUMP EXHAUST
SHOULD PROTRUDE
APPROX. 1.5” INTO OIL
DRAIN BOTTLE
CABLE TIE TUBES TO HOLE
IN VACUUM PUMP SHELF
TAB WITH (1) 535876.
EEAC325A Service Manual
Diagnostics
Replacement Manifold Block (RA20018) (continued)
Figure 2 – Plumbing Connections to Manifold Block
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09/2007
EEAC325A Service Manual
Diagnostics
Replacement Manifold Solenoid (RA20010)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
Instructions
These instructions outline the steps to replace the existing manifold solenoid.
Installing the Replacement Manifold Solenoid
1. Lubricate the o-rings and threads on the new solenoid assembly.
2. Install the new solenoid assembly into the main
block and hand-tighten.
3. Using a torque wrench, tighten the solenoid assembly to a torque of 75 in. lbs. (±5 in. lbs.).
4. Install the new coil on the new solenoid assembly, and secure with the fastener that holds the coil
in place.
5. Using a torque wrench, tighten the coil retaining
bolt to a torque of 30 in. lbs. (±5 in. lbs.).
Removing the Manifold Solenoid
1. Disconnect the unit from its power source.
6. Reconnect the wires that were disconnected when
removing the old solenoid assembly.
2. Remove the left side oil bottle from the unit.
3. Remove the hood and left side panel.
7. Plug unit into power source, perform a function
test, and check for any leaks.
4. Depressurize the unit.
8. Replace the shrouding and oil bottle.
5. Disconnect the two wires connected to the solenoid that is being replaced.
6. Remove the fastener that holds the coil on the
solenoid, and remove the coil.
7. Remove the solenoid assembly from the manifold
block.
8. Check the manifold block for any debris before
beginning the installation of a new solenoid.
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09/2007
Page 59
EEAC325A Service Manual
Diagnostics
Replacement Display Board (RA20012)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
Instructions
These instructions outline the steps to replace the existing display board.
Removing the Display Board
1.
2.
3.
4.
5.
Disconnect the unit from its power source.
Remove the four (4) bolts securing the hood.
Remove the hood.
Remove the oil inject bottle.
Remove the two (2) screws securing the right-side
panel.
6. Remove right-side panel.
7. Disconnect all wires from the display board.
8. Remove the four (4) screws securing the display
board in place.
Installing the Replacement Display Board
1. Install the display board, and secure with four (4)
screws.
2. Connect all wires as shown in diagram on following page.
3. Connect unit to its power source.
4. Turn the unit on to begin calibration steps.
5. Press the UP or DOWN arrow key to move the
cursor to SETUP.
Page 60
6. Press the LEFT arrow key (ENTER) to confirm
selection.
7. Press the UP or DOWN arrow key to move the
cursor to SERVICE MENU.
8. Press the LEFT arrow key (ENTER) to confirm
selection.
9. Press the UP or DOWN arrow key until the number “2” is shown in the first of four places on the
display.
10. Press the LEFT arrow key (ENTER) to confirm
selection.
11. Press the UP or DOWN arrow key until the number “2” is shown in the second of four places on
the display.
12. Press the LEFT arrow key (ENTER) to confirm
selection.
13. Press the UP or DOWN arrow key until the number “0” is shown in the third of four places on the
display.
14. Press the LEFT arrow key (ENTER) to confirm
selection.
15. Press the UP or DOWN arrow key until the number “0” is shown in the forth of four places on the
display.
16. Display should show “2200.”
17. Press the LEFT arrow key (ENTER) to confirm
selection.
18. From the SERVICE MENU, press the UP arrow key until “Calibrate Tank Scale” is displayed
on the screen.
19. Press the LEFT arrow key (ENTER) to confirm
selection.
20. Close all three (3) tank valves.
21. Depressurize the unit.
22. Disconnect the liquid hose and vapor hose from
the tank.
23. Disconnect the wires from the air purge solenoid,
tank temperature probe, and pressure transducer.
24. Remove the two (2) bolts that secure the tank in
place.
continued . . .
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09/2007
EEAC325A Service Manual
Diagnostics
Installing the Replacement Display Board — Continued
25. Remove the tank from the scale, and verify there
is no weight on the scale or anything interfering
with the scale.
26. Press the LEFT arrow key (ENTER) to begin
calibration.
27. Place 20 pounds on the scale when prompted;
then, press (START).
28. When “Calibrate Tank Scale” appears, press the
UP arrow key to “UL Calibration.”
29. Press the LEFT arrow key (START).
30. Place 43 pounds on the scale if using a
Worthington tank, or 45 pounds if using an
Aircom tank.
31. Press the LEFT arrow key (ENTER) to continue.
32. Wait while the unit calibrates the UL circuit and
stops.
33. Remove 2 pounds when the unit prompts you.
34. When the unit shows “UL Calibration Complete,’ press the RIGHT arrow key (CANCEL)
twice to return to MAIN MENU.
35. Place the tank on the scale, and secure with two
(2) bolts.
36. Reconnect the tank temperature probe, air purge
solenoid, and pressure transducer wires.
37. Reconnect the liquid hose and vapor hose to the
tank.
38. Open all three (3) tank valves.
39. Perform a function test, and check for leaks.
40. Replace all shrouding and oil bottle.
Display Board Wiring Diagram
Effective
09/2007
Page 61
EEAC325A Service Manual
Diagnostics
Replacement Relay Board (RA20013)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Removing the Relay Board
1. Disconnect the unit from its power source.
2. Remove the right side oil bottle from the unit.
3. Remove the hood and right side panel.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
4. Disconnect all wires from the relay board.
5. Remove the screws that secure the relay board in
place.
Instructions
These instructions outline the steps to replace the relay
board.
Relay Board Wiring Diagram
Page 62
Effective
09/2007
Diagnostics
EEAC325A Service Manual
Installing the Replacement Relay Board
1. Install the new relay board, and secure in place
with screws.
2. Connect all wires as shown in diagram on previous page.
3. Connect the unit to its power source.
4. Turn the unit on to begin calibration steps.
5. Press the UP or DOWN arrow key to move the
cursor to SETUP.
6. Press the LEFT arrow key (ENTER) to confirm
selection.
7. Press the UP or DOWN arrow key to move the
cursor to SERVICE MENU.
8. Press the LEFT arrow key (ENTER) to confirm
selection.
9. Press the UP or DOWN arrow key until the number “2” is shown in the first of four places on the
display.
10. Press the LEFT arrow key (ENTER) to confirm
selection.
11. Press the UP or DOWN arrow key until the number “2” is shown in the second of four places on
the display.
12. Press the LEFT arrow key (ENTER) to confirm
selection.
13. Press the UP or DOWN arrow key until the number “0” is shown in the third of four places on the
display.
14. Press the LEFT arrow key (ENTER) to confirm
selection.
15. Press the UP or DOWN arrow key until the number “0” is shown in the forth of four places on the
display.
16. Display should show “2200.”
17. Press the LEFT arrow key (ENTER) to confirm
selection.
18. From the SERVICE MENU, press the UP arrow key until “Calibrate Tank Scale” is displayed
on the screen.
Effective
09/2007
19. Press the LEFT arrow key (ENTER) to confirm
selection.
20. Close all three (3) tank valves.
21. Depressurize the unit.
22. Disconnect the liquid hose and vapor hose from
the tank.
23. Disconnect the wires from the air purge solenoid,
tank temperature probe, and pressure transducer.
24. Remove the two (2) bolts that secure the tank in
place.
25. Remove the tank from the scale, and verify there
is no weight on the scale or anything interfering
with the scale.
26. Press the LEFT arrow key (ENTER) to begin
calibration.
27. Place 20 pounds on the scale when prompted;
then, press (START).
28. When “Calibrate Tank Scale” appears, press the
UP arrow key to “UL Calibration.”
29. Press the LEFT arrow key (START).
30. Place 43 pounds on the scale if using a
Worthington tank, or 45 pounds if using an
Aircom tank.
31. Press the LEFT arrow key (ENTER) to continue.
32. Wait while the unit calibrates the UL circuit and
stops.
33. Remove 2 pounds when the unit prompts you.
34. When the unit shows “UL Calibration Complete,’ press the RIGHT arrow key (CANCEL)
twice to return to MAIN MENU.
35. Place the tank on the scale, and secure with two
(2) bolts.
36. Reconnect the tank temperature probe, air purge
solenoid, and pressure transducer wires.
37. Reconnect the liquid hose and vapor hose to the
tank.
38. Open all three (3) tank valves.
39. Perform a function test, and check for leaks.
40. Replace all shrouding and oil bottle.
Page 63
EEAC325A Service Manual
Diagnostics
Replacement Vacuum Relief Check Valve (RA20015)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
Instructions
These instructions outline the steps to replace the existing vacuum relief check valve.
Removing the Vacuum Relief Check Valve
1. Disconnect the unit from its power source.
Installing the Replacement Vacuum Relief
Check Valve
Use a thread sealant that is compatible with
refrigerants such as Loctite® 565 or equivalent.
1. Install the compression fitting into the discharge
side of the new check valve.
2. Install the check valve onto the tee fitting that is
connected to the main block.
3. Connect the nylon line that was removed from the
old vacuum relief check valve.
4. Plug unit into power source, perform a function
test, and check for any leaks.
5. Replace all shrouding and oil bottle.
2. Remove the left side oil bottle.
3. Remove the hood and left side panel.
4. Depressurize the unit.
5. Remove the nylon line from the fitting connected
to the check valve.
Main Block
6. Remove the check valve connected to the tee fitting.
7. Remove the compression fitting from the check
valve.
Tee Fitting
Vacuum Relief
Check Valve
(Note direction
of flow arrow)
Vacuum Relief Check Valve Location
Page 64
Effective
09/2007
Diagnostics
EEAC325A Service Manual
Replacement Manifold Check Valve (RA20016)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Installing the Replacement Manifold Check
Valve
1. Lubricate the o-rings on the new check valve.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
2. Install the new check valve into the main block
and hand-tighten.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
3. Using a torque wrench, tighten the check valve to
a torque of 75 in. lbs. (±5 in. lbs.).
4. Plug unit into power source, perform a function
test, and check for any leaks.
Instructions
These instructions outline the steps to replace the existing check valve manifold.
5. Replace all shrouding and oil bottle.
Removing the Manifold Check Valve
1. Disconnect the unit from its power source.
2. Remove the left side oil bottle.
3. Remove the hood and left side panel.
4. Depressurize the unit.
5. Remove the existing manifold check valve that
needs to be replaced.
Effective
09/2007
Page 65
EEAC325A Service Manual
Diagnostics
Replacement 3/8” High Pressure Tube (RA20005)
Unplug the station before beginning service
work. Incorrect use or connections can cause
electrical shock.
Wear safety goggles when working with refrigerants. Refrigerants can cause eye injury.
Disconnect hoses using extreme caution! Pressurized refrigerant may be present in hoses.
Point hoses away from you and anyone nearby.
Instructions
These instructions outline the steps to replace the three
black 3/8” high pressure tubes.
To prevent personal injury and/or equipment
damage, always replace tubing that has been
removed from the compressor. The process
of installing and removing the tubes can stress
them, causing them to leak or fail.
1. Depressurize unit.
2. Disconnect and discard the old tube and ferrule
nuts.
3. Using the old tube as a guide, cut a piece of new
tubing the same length.
4. With new ferrule nuts (from kit RA20006), install
the new tube into the unit. Tighten the nuts until
no leaks are detected.
Page 66
Effective
09/2007
J9
Keyboard
J11
SD Card PCB
J1
Display/Control PCB
Development
Use Only
Scale Ass’y
S15-Air Purge
Temp Probe
Future Use
J2
539988
539927
539988
539995
Power
Switch
J1
Relay PCB
J2
Circuit
Breaker
Power Supply
34788 INTERCONNECT DIAGRAM
539990
Air Purge Trans
539996
539990
539994
539988
539988
ISV Ass’y
539927
539927
539987
539989
Effective
09/2007
122770
539992
539991
Fan
Compressor
Vacuum Pump
HP Switch
S1-N Discharge
S2-HS Clear
S5-HS Charge
S6-LS Charge
S10-Recover
S11-Tank Fill
S3-Oil Inject
S4-Dp Recover
S7-HS Inlet
S8-Vacuum
S9-LS Inlet
S12-Pwr Charge
S13-Oil Return
S14-Oil Drain
Low-Side Trans
Accum Trans
Manifold Ass’y
Diagnostics
EEAC325A Service Manual
SYSTEM WIRING
Page 67
EEAC325A Service Manual
Diagnostics
COMPONENT WIRING
3A CIRCUIT BREAKER
FAN
SCALE ASSEMBLY
POWER CORD BRACKET
ISV ASSEMBLY
CB
15 AMP CIRCUIT BREAKER
MAIN POWER SWITCH
Page 68
EEAC325A CHASSIS
Effective
09/2007
Diagnostics
EEAC325A Service Manual
RETAINER
COMP.
ELEC. BOX
PROTECTOR
RELAY
SCREW
PUMP
CAPACITOR
LEADS
CAPACITOR
VACUUM PUMP ASSEMBLY
COMPRESSOR
Future Use
DB2
Development
Use Only
Keyboard
DB1
DISPLAY/CONTROL BOARD
RELAY BOARD
SD SLOT
(SD2)
SD1
SD ADAPTER BOARD
Effective
09/2007
POWER SUPPLY
Page 69
EEAC325A Service Manual
Diagnostics
MANIFOLD BLOCK ASSEMBLY – TOP VIEW
MANIFOLD BLOCK ASSEMBLY – FRONT VIEW
Page 70
Effective
09/2007
EEAC325A Service Manual
Diagnostics
WIRING HARNESSES
Relay Board Connector Pin-outs
The following chart describes the pinouts for each connector on the relay board. The connector descriptions are: J1from power switch, J2-to 12 volt power supply, J3-to circuit breaker, J4-to high pressure switch, J5-to display/control
board, J6-to vacuum pump, compressor, and fan, J7-to low-side transducer, J8-to temperature probe, J11-to manifold
solenoids, J13-to accumulator transducer, J14- to air pressure transducer, J16-to scale assembly, J17-to manifold
solenoids, J18-to normal discharge solenoid.
Conn
Pin1
Pin2
Pin3
J1
Earth Ground
AC Neutral in
AC Line in
Pin4
J2
AC 110V to 12VPS
Neutral to 12VPS
Earth Ground
12V from 12VPS DC GND
J3
Circuit Breaker
Circuit Breaker
12V fuse
12V fuse
J4
HP Switch
HP Switch
J5
Ground
SPI
SPI
SPI
J6
110V Output Pump
Neutral Pump
110V Output Comp Neutral Comp
J7
5V to LS Xducer
Output from Xducer Ground
J8
Temp Probe
Temp Probe
J11
Pwr Charge Sol
Vacuum Sol
J13
5V to Acc Xducer
Output from Xducer Ground
J14
5V to AP Xducer
Output from Xducer Ground
J16
Exc V to scale
Diff out from scale
Diff out from scale
Ground
J17
Tank Fill Sol
Recover Sol
LS Charge Sol
HS Charge Sol
J18
Norm Discharge Sol Aux
Aux
Aux
LS Inlet Sol
HS Inlet Sol
Pin5
SPI
Pin6
Pin7
Pin8
Deep Rec Sol
Oil Inject Sol
12V to Ctrl Board
110V Output Fan Neutral Fan
Oil Return Sol
Oil Drain Sol
Air Purge Sol
HS Clear Sol
AC Power Cord (122770)
AC POWER CORD (122770)
CONNECTOR #
71
72
73
Effective
09/2007
CONNECTS TO:
Main Pow er SW1 - 2A
Main Ground Stud
Main Pow er SW1 - 1A
Page 71
Manifold 1 Harness (539927)
Page 72
CONNECTS TO:
J-17 Relay Board
J-18 Relay Board
Solenoid - S1 (Tan Wires)
Solenoid - S2 (Black Wires)
Solenoid - S5 (Orange Wires)
Solenoid - S6 (Purple Wires)
Solenoid - S10 (Yellow Wires)
Solenoid - S11 (Pink Wires)
Solenoid - S15 (Gray Wires)
MANIFOLD 1 WIRE HARNESS (539927)
CONNECTOR #
RB13
RB11
S1
S2
S5
S6
S10
S11
S15
EEAC325A Service Manual
Diagnostics
Manifold 1 Harness (539927)
Effective
09/2007
Manifold 2 Harness (539987)
Effective
09/2007
CONNECTOR #
RB14
S3
S4
S7
S8
S9
S12
S13
S14
CONNECTS TO:
J-11 Relay Board
Solenoid - S3 (Blue Wires)
Solenoid - S4 (Light Blue Wires)
Solenoid - S7 (Yellow Wires)
Solenoid - S8 (Red Wires)
Solenoid - S9 (Gray Wires)
Solenoid - S12 (White Wires)
Solenoid - S13 (Purple Wires)
Solenoid - S14 (Orange Wires)
MANIFOLD 2 WIRE HARNESS (539987)
Diagnostics
EEAC325A Service Manual
Manifold 2 Harness (539987)
Page 73
Transducer Wire Harness (539988)
Page 74
CONNECTOR #
RB1
RB2
RB3
RB4
TS
PT20
PT21
PT22
CONNECTS TO:
J-7 Relay Board
J-13 Relay Board
J-14 Relay Board
J-8 Relay Board
Temperature Probe - ISV
Low -Side Transducer - Manifold
Accum Transducer - Manifold
Air Purge Transducer - ISV
TRANSDUCER WIRE HARNESS (539988)
Detail A
EEAC325A Service Manual
Diagnostics
Transducer Wire Harness (539988)
Effective
09/2007
Effective
09/2007
Light Blue
Brown
Green/Yellow
Brown
Compressor/Fan Wire Harness (539989)
Dark Blue
Dark Blue
CONNECTOR #
RB10
COMP
FAN
FAN GND
PUMP
GND
Green/Yellow
CONNECTS TO:
J-6 Relay Board
To Compress Harness (539991)
Fan
Fan Ground
Vacuum Pump Assembly
Chassis Ground
Brown
Green/Yellow
COMPRESSOR/FAN WIRE HARNESS (539989)
Diagnostics
EEAC325A Service Manual
Compressor/Fan Wire Harness (539989)
Page 75
Page 76
Brown
Brown
Green/Yellow
Power Wire Harness (539990)
Light Blue
Brown
CONNECTS TO:
J-3 Relay Board
J-1 Relay Board
15A Circuit Breaker
Ground
Pow er Sw itch #1
Pow er Sw itch #2
POWER WIRE HARNESS (539990)
CONNECTOR #
RB9
RB6
CB
GRN
74
75
EEAC325A Service Manual
Diagnostics
Power Wire Harness (539990)
Effective
09/2007
Effective
09/2007
Brown
Compressor Pigtail Wire Harness (539991)
CONNECTS TO:
To Compressor/Fan Wire Harness (539989)
Compressor Relay
Compressor Protector
Compressor Ground
Green/Yellow
Blue
CONNECTOR #
COMP
64
66
76
COMPRESSOR/FAN WIRE HARNESS (539991)
Diagnostics
EEAC325A Service Manual
Compressor Pigtail Wire Harness (539991)
Page 77
High Pressure Cutout Harness (539992)
Page 78
Brown
CONNECTOR # CONNECTS TO:
RB8
J-4 Relay Board
HPS
High Pressure Cutout Sw itch - Manifold
HIGH PRESSURE CUTOUT SWITCH (539992)
EEAC325A Service Manual
Diagnostics
High Pressure Cutout Harness (539992)
Effective
09/2007
Effective
09/2007
Gray
Brown
Power Supply Harness (539994)
Red
CONNECTOR #
RB7
PSJ1
PSJ2
CONNECTS TO:
J-2 Relay Board
J-1 Pow er Supply
J-2 Pow er Supply
Blue
POWER SUPPLY HARNESS (539994)
Diagnostics
EEAC325A Service Manual
Power Supply Harness (539994)
Page 79
Diagnostics
EEAC325A Service Manual
Interconnect Cable (539995)
INTERCONNECT CABLE (539995)
CONNECTOR # CONNECTS TO:
RB12
J-5 Relay Board
DB1
J-9 Display/Control Board
SD Board Cable (539996)
SD BOARD CABLE (539996)
CONNECTOR # CONNECTS TO:
DB2
J-11 Display/Control Board
SD1
J-1 SD Card Board
SD1
Page 80
DB2
Effective
09/2007
Diagnostics
EEAC325A Service Manual
Ground Wire Harness (539993)
GROUND WIRE HARNESS (539993)
CONNECTOR # CONNECTS TO:
25
Pow er Cord Bracket
GND
Chassis Ground
Green/Yellow
Capacitor Lead (516844)
CAPACITOR LEAD (516844)
CONNECTOR # CONNECTS TO:
A
Compressor Relay (1 or 2)
B
Compressor Capacitor
A
B
Black
Effective
09/2007
Fully Insulated
Terminal
Page 81
EEAC325A Service Manual
Diagnostics
COMPONENT IDENTIFICATION
MANIFOLD BLOCK ASSEMBLY - TOP
LOW SIDE
TRANSDUCER
HIGH-SIDE INLET
LOW-SIDE
SOLENOID
CHARGE SOLENOID
HIGH-SIDE
CHARGE SOLENOID
OIL INJECT
SOLENOID
NORMAL DISCHARGE
SOLENOID
S7
S3
S5 S6
S1
PT20
HIGH-SIDE
CLEAR SOLENOID
S2
S10
S8
POWER CHARGE
SOLENOID
S12
S11
S9
S4
RECOVER
SOLENOID
VACUUM
SOLENOID
PT21
HIGH PRESSURE
SWITCH
TANK FILL
SOLENOID
DEEP RECOVER
SOLENOID
LOW-SIDE INLET
SOLENOID
ACCUM TRANSDUCER
AIR PURGE
SOLENOID
HIGH PRESSURE
SWITCH
UPPER BLOCK
LOWER BLOCK
AIR PURGE PRESSURE
TRANSDUCER
S15
TEMPERATURE
PROBE
HPS
4 PSI RELIEF FOR
VACUUM PUMP
COMPRESSOR
OIL
SEPARATOR
SYSTEM OIL
SEPARATOR
OIL RETURN
SOLENOID
ISV
S13
FILTER DRIER
OIL DRAIN
SOLENOID
S14
MANIFOLD BLOCK ASSEMBLY - FRONT
Page 82
ISV ASSEMBLY
Effective
09/2007
Diagnostics
EEAC325A Service Manual
COMPONENT APPLICATION CHART
Component Application Chart
Norm al Discharge
Solenoid (1)
Tank Fill
Recover
ON
ON
Air Purge
Clearing
Vacuum
Leak Test
Inject Oil
Charge /
Pw r Charge*
I
High-Side Clear
Solenoid (2)
I
I*
Oil Inject
Solenoid (3)
ON
Deep Recover
Solenoid (4)
I
High-Side Charge
Solenoid (5)
P
Low -Side Charge
Solenoid (6)
P
High-Side Inlet
Solenoid (7)
ON
ON
Vacuum
Solenoid (8)
I
ON
Low -Side Inlet
Solenoid (9)
ON
ON
Recover
Solenoid (10)
I
Tank Fill
Solenoid (11)
I
Oil Return
Solenoid (13)
I
Oil Drain
Solenoid (14)
I
Air Purge
Solenoid (15)
I*
I
ON
I
Vacuum Pum p
ON
Com pressor
ON
ON
ON
Fan
ON
ON
ON
Effective
09/2007
ON
I
Pow er Charge
Solenoid (12)
ON
ON
I*
ON
I
ON Intermittently
P
User Programmed
*
Charge/Power Charge Note: If the unit does not complete a full
charge, the compressor, power charge and high-side clear solenoids are activated, then stop to build tank pressure.
Page 83
External
Tank
Tank Fill
Solenoid
Tank Fill
Checkvalve
Page 84
TANK FILL
During the Tank Fill process the compressor,
fan, normal discharge, and tank fill solenoid are
activated. The output state of the tank fill solenoid is controlled to maintain 35 psi in the
accumulator. When the ISV reaches the “target” weight, all components are deactivated.
ENERGIZED
Oil Inject
Bottle
Vacuum
Solenoid
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
DISCHARGE
SUCTION
Recover
Solenoid
Vacuum Pump
Oil Return
Solenoid
Compressor
HS Clear
Solenoid
Clearing Discharge
Checkvalve
Vapor
Recover
Checkvalve
Oil Drain
Solenoid
Filter Drier
High Pressure
Switch
Normal Discharge
Checkvalve
Air Purge
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
Accum
Transducer
Power Charge
Solenoid
EEAC325A Service Manual
Diagnostics
FLOW DIAGRAMS
Tank Fill
Effective
09/2007
External
Tank
Tank Fill
Solenoid
Tank Fill
Checkvalve
Effective
09/2007
RECOVERY PROCESS
During the first stage of the recovery process,
the fan, compressor, normal discharge, recover,
HS and LS inlet solenoids are activated. During the second stage of the recover process,
the vacuum pump, vacuum, deep recover, and
power charge solenoids are activated and the
recover solenoid is deactivated.
ENERGIZED
Oil Inject
Bottle
Vacuum
Solenoid
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
DISCHARGE
SUCTION
Recover
Solenoid
Vacuum Pump
Oil Return
Solenoid
Compressor
HS Clear
Solenoid
Clearing Discharge
Checkvalve
Vapor
Recover
Checkvalve
Oil Drain
Solenoid
Filter Drier
High Pressure
Switch
Normal Discharge
Checkvalve
Air Purge
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
Accum
Transducer
Power Charge
Solenoid
Diagnostics
EEAC325A Service Manual
Recover
Page 85
Page 86
Tank Fill
Checkvalve
AIR PURGE
The air purge solenoid is activated to release
excess pressure from the internal storage vessel. The air purge usually follows the Recover
process.
ENERGIZED
Vacuum
Solenoid
Oil Inject
Bottle
Vacuum Pump
Oil Return
Solenoid
Compressor
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
DISCHARGE
Recover
Solenoid
Oil Drain
Solenoid
Filter Drier
HS Clearing
Solenoid
Clearing Discharge
Checkvalve
Vapor
Recover
Checkvalve
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
High Pressure
Switch
Normal Discharge
Checkvalve
Air Purge
SUCTION
External
Tank
Tank Fill
Solenoid
Accum
Transducer
Power Charge
Solenoid
EEAC325A Service Manual
Diagnostics
Air Purge
Effective
09/2007
External
Tank
Tank Fill
Solenoid
Tank Fill
Checkvalve
Effective
09/2007
CLEARING PROCESS
During the first stage of the clearing process the
normal discharge solenoid and compressor are
activated. The second stage of clearing deactivates the normal discharge solenoid and activates the HS clear and oil return solenoids. When
the accumulator transducer reads less than 9
inHG, all outputs are deactivated.
ENERGIZED
Oil Inject
Bottle
Vacuum
Solenoid
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
DISCHARGE
SUCTION
Recover
Solenoid
Vacuum Pump
Oil Return
Solenoid
Compressor
HS Clear
Solenoid
Clearing Discharge
Checkvalve
Vapor
Recover
Checkvalve
Oil Drain
Solenoid
Filter Drier
High Pressure
Switch
Normal Discharge
Checkvalve
Air Purge
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
Accum
Transducer
Power Charge
Solenoid
Diagnostics
EEAC325A Service Manual
Clearing
Page 87
External
Tank
Tank Fill
Solenoid
Tank Fill
Checkvalve
Page 88
VACUUM PROCESS
The default vacuum time is 10:00 minutes.
When the vacuum process begins, the vacuum
pump is activated. After a 5 second delay, the
vacuum, HS and LS inlet solenoids are also
activated. When the Low-Side transducer
reads > 10 psi, you will be prompted to end the
vacuum process.
ENERGIZED
Oil Inject
Bottle
Vacuum
Solenoid
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
DISCHARGE
SUCTION
Recover
Solenoid
Vacuum Pump
Oil Return
Solenoid
Compressor
HS Clearing
Solenoid
Clearing Discharge
Checkvalve
Vapor
Recover
Checkvalve
Oil Drain
Solenoid
Filter Drier
High Pressure
Switch
Normal Discharge
Checkvalve
Air Purge
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
Accum
Transducer
Power Charge
Solenoid
EEAC325A Service Manual
Diagnostics
Vacuum
Effective
09/2007
Effective
09/2007
Tank Fill
Checkvalve
LEAK TEST PROCESS
High-Side inlet and Low-Side inlet solenoids are
activated to equalize high and low sides of system being serviced. Unit checks low-side transducer for rise in vacuum. (This is not a service
menu test.)
ENERGIZED
Vacuum
Solenoid
Oil Inject
Bottle
Vacuum Pump
Oil Return
Solenoid
Compressor
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
Recover
Solenoid
Oil Drain
Solenoid
Filter Drier
HS Clear
Solenoid
Clearing Discharge
Checkvalve
Vapor
Recover
Checkvalve
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
High Pressure
Switch
Normal Discharge
Checkvalve
Air Purge
PRESSURE
External
Tank
Tank Fill
Solenoid
Accum
Transducer
Power Charge
Solenoid
Diagnostics
EEAC325A Service Manual
Leak Test
Page 89
Page 90
Tank Fill
Checkvalve
INJECT OIL
The inject oil button must be depressed to
activate the oil inject solenoid. Release the
button to deactivate the solenoid. The system being serviced must have a vacuum to
pull oil from the oil inject bottle.
ENERGIZED
Vacuum
Solenoid
Oil Inject
Bottle
Vacuum Pump
Oil Return
Solenoid
Compressor
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
DISCHARGE
Recover
Solenoid
Oil Drain
Solenoid
Filter Drier
HS Clearing
Solenoid
Clearing Discharge
Checkvalve
Vapor
Recover
Checkvalve
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
High Pressure
Switch
Normal Discharge
Checkvalve
Air Purge
SUCTION
External
Tank
Tank Fill
Solenoid
Accum
Transducer
Power Charge
Solenoid
EEAC325A Service Manual
Diagnostics
Inject Oil
Effective
09/2007
Effective
09/2007
External
Tank
Tank Fill
Solenoid
Tank Fill
Checkvalve
CHARGE PROCESS
During the Charge process, the end user may select either high-side charge, low-side charge, or both. When
the charge process gets close to the programmed weight,
the unit slows down. It’ll charge, settle, charge again,
settle, etc. When the charge process is complete, user
must equalize hoses. If the unit does not complete a full
charge, the compressor, power charge and high-side clear
solenoids are activated, then stop to build tank pressure.
ENERGIZED
Oil Inject
Bottle
Vacuum
Solenoid
Oil Inject
Solenoid
High Side Inlet
Solenoid
Low Side Inlet
Solenoid
Normal
Discharge
Solenoid
High Side
Gauge
High Side
High Side
Charge Solenoid
Compressor
Oil Separator
Pressure
Relief
Low Side
Low Side
Gauge
Low Side
Charge Solenoid
ISV
Temp
Probe
Pressure
Transducer
Air Purge
Solenoid
Air Diffuser
Low Side Pressure
Transducer
Liquid
INTERMITTENT
DISCHARGE
SUCTION
Recover
Solenoid
Vacuum Pump
Oil Return
Solenoid
Compressor
HS Clear
Solenoid
Clearing Discharge
Checkvalve
Normal Discharge
Checkvalve
Vapor
Recover
Checkvalve
Oil Drain
Solenoid
Filter Drier
High Pressure
Switch
Power Charge
Solenoid
Air Purge
Deep Recover
Solenoid
4 PSI
Relief
Oil Drain
Bottle
System Oil
Separator
Accum
Transducer
NOTE: If the unit does not complete a full charge, the
compressor, power charge and high-side clear solenoids
are activated, then stops to build tank pressure.
Diagnostics
EEAC325A Service Manual
Charge
Page 91
EEAC325A Service Manual
Page 92
Diagnostics
Effective
09/2007
Service Bulletins
EEAC325A Service Manual
Section 4 - Service Bulletins
Place all service bulletins for the KoolKare Plus +™ EEAC325A in this section
Effective
09/2007
Page 93
EEAC325A Service Manual
Page 94
Service Bulletins
Effective
09/2007
Snap-on Technical Support: (866) 769-2788
TECHNICAL SERVICE BULLETIN
RA19950 Reservoir Installation Kit
SUBJECT:
EQUIP. AFFECTED: 3 CFM Station Pump
ACTION REQUIRED: Informational
HARDWARE
NO:
00201-SN
DATE:
Nov., 2006
AUTHOR: S. Parde
3 CFM Station Pump Part Numbers
RA19902 — Complete Station Pump, 115V, 60Hz
527849
— Complete Station Pump, 230V, 50Hz
RA19950 — Reservoir Installation Kit (includes removal and assembly instructions)
THIS DISCLOSURE TO BE MAINTAINED IN CONFIDENCE.
Snap-on Technical Support: (866) 769-2788
TECHNICAL SERVICE BULLETIN
INFORMATION
New Air Com Internal Storage Vessel (ISV)
SUBJECT:
EQUIP. AFFECTED: Snap-on EEAC325A unit
ACTION REQUIRED: Informational
NO:
00203-SN
DATE:
July, 2007
AUTHOR: S. Parde
Overview
A new Internal Storage Vessel (ISV) has been approved for use in the Snap-on EEAC325A unit, which is
identified as “Air Com.” For the time being, either the new Air Com ISV or the Worthington ISV can be used
in the EEAC325A unit. However, there are some differences between the two ISV’s that should be noted to
properly set UL and scale calibrations. Refer to tank specifications listed below and be sure you identify the
proper tank and use the corresponding specs to calibrate the unit.
AIR COM ISV “New”
WORTHINGTON ISV
Tag says “Certified by “Air Com Co. Ltd.”
Port ID label has a border around its edges
Tank Tare = 20.50 lbs. (9.30 kg.)
UL Calibration Wt. = 45 lbs. (20.4 kg.)
Tag says “Certified by WORTHJ”
Port ID label has no border around its edges
Tank Tare = 17.50 lbs. (7.94 kg.)
UL Calibration Wt. = 43 lbs. (19.5 kg.)
Figure 1 - Air Com Tank Tag
Figure 2 - Worthington Tank Tag
CERTIFIED BY AIR COM CO. LTD.
CERTIFIED BY WORTHJ
Please note this information in the Snap-on EEAC325A service manual, or download the updated
service manual from the Service Center website.
THIS DISCLOSURE TO BE MAINTAINED IN CONFIDENCE.
Snap-on Technical Support: (866) 769-2788
TECHNICAL SERVICE BULLETIN
HARDWARE
Internal Storage Vessel (ISV) Assembly Parts
SUBJECT:
EQUIP. AFFECTED: Snap-on EEAC325A unit
ACTION REQUIRED: Informational
NO:
00204-SN
DATE:
Aug., 2007
AUTHOR: S. Parde
Overview
Engineering has recently approved a new Internal Storage Vessel (ISV) for use in the Snap-on EEAC325A
unit, which is identified as “Air Com.” For the time being, either the new Air Com ISV or the Worthington ISV
can be used in the EEAC325A unit. The part numbers shown in the listing below are compatible for both Air
Com and Worthington tanks. If the tank itself is ordered (539477), you will receive the new Air Com tank.
3
4
5
9
10
8
11
2
7
12
6
13
1
ISV ASSEMBLY
Use Loctite 565 on all pipe threads.
Tank Tare Weight:
Worthington: 17.50 lbs. (7.94 kg.)
Air Com:
20.50 lbs. (9.30 kg.)
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
Description
ISV, INTERNAL
FITTING, STRAIGHT
SOLENOID, 12V DC DISCRETE
VALVE, BALL, AIR PURGE
VALVE, BALL, LIQUID
PRESSURE RELIEF, 450PSI
FITTING, TEE, .25FP X .25FP X .25MP
VALVE, BALL, VAPOR
TEMPERATURE PROBE
TRANSDUCER, AIR PURGE
TEE, MALE BRANCH 1/8 NPTF
ORIFICE, UNION .026
MUFFLER, AIR EXHAUST
THIS DISCLOSURE TO BE MAINTAINED IN CONFIDENCE.
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
Part No.
539477
210312
RA20009
539799
539798
RA19499
508690
540322
539472
539229
539654
539804
519605
Snap-on Technical Support: (866) 769-2788
TECHNICAL SERVICE BULLETIN
INFORMATION
Display Board Wiring Diagram Error
SUBJECT:
EQUIP. AFFECTED: Snap-on EEAC325A unit
ACTION REQUIRED: Informational
NO:
00205-SN
DATE:
Aug., 2007
AUTHOR: S. Parde
EEAC325A Service Manual
The Display Board (RA20012) wiring diagram print located on page 61 of the Snap-on EEAC325A service
manual is incorrect. Please refer to the print below for correct wiring orientation.
Please note these changes in the Snap-on EEAC325A service manual.
Display Board Wiring Diagram
THIS DISCLOSURE TO BE MAINTAINED IN CONFIDENCE.
Snap-on Technical Support: (866) 769-2788
TECHNICAL SERVICE BULLETIN
INFORMATION
Part Number Corrections (Hoses)
SUBJECT:
EQUIP. AFFECTED: Snap-on EEAC325A unit
ACTION REQUIRED: Informational
NO:
00206-SN
DATE:
Aug., 2007
AUTHOR: S. Parde
EEAC325A Service Manual
A couple of errors have been noted on the “Plumbing Diagram Parts List,” which is located on page 25 of the
Snap-on EEAC325A service manual. The corrected parts list is provided below, which includes updated
numbers for the Low Side Service Hose, High Side Service Hose, and the Tank Fill Hose. These corrections
have also been applied to pages 29 and 30 of the Alphabetical Parts section.
Please note these changes in the Snap-on EEAC325A service manual.
Plumbing Diagram Parts List
No.
Description
Qty.
Part No.
1
HOSE, LOW SIDE SERVICE
1
EEAC325A3
2
HOSE, HIGH SIDE SERVICE
1
EEAC325A2
3
TUBE, 1/4 OD X 0.040 ID
19"
120225
4
TUBE, 3/8" HIGH PRESSURE
16"
RA20005
5
HOSE, LIQUID
1
541627
6
HOSE, VAPOR
1
541626
7
TUBE, 1/4 OD X 0.040 ID
28"
120225
8
HOSE, TANK FILL
1
541625
9
TUBE, 1/4 OD X 0.040 ID
42"
120225
10
TUBE, 3/8" HIGH PRESSURE
15"
RA20005
11
TUBE, COMPRESSOR TO MANIFOLD
1
538469
12
TUBE, 3/8" HIGH PRESSURE
12"
RA20005
13
TUBE, NYLON 1/8 OD X .070 ID
42"
121773
14
NUT, COMPRESSION (3/8 TUBE)
2
RA20006
15
O'RING (PKR #5-124) NEOPRENE
2
RA19916
16
NUT, COMPRESSION (1/4 TUBE)
1
RA20007
THIS DISCLOSURE TO BE MAINTAINED IN CONFIDENCE.
EEAC325A Service Manual
Page 100
Service Bulletins
Effective
09/2007
Labor Rates
EEAC325A Service Manual
Section 5 - Labor Rates
Snap-on authorizes a labor charge of 1-1/2 hours to troubleshoot and complete a full function test on units that are
covered under factory warranty (including leak testing). The authorized time for parts replacement is 15 minutes
per part. Some items require an additional amount of time to facilitate installation. These items and their times are
listed below. If repairs are estimated to exceed two (2) hours, prior authorization from Snap-on is required.
Part Number
Component
Total Time
RA20018
RA20020
RA20017
Manifold Assembly
Compressor Assembly
Vacuum Pump Assembly
60 minutes
30 minutes
30 minutes
Snap-on considers filters to be a consumable item; they are not covered under warranty. This includes
parts and labor.
Effective
09/2007
Page 101
EEAC325A Service Manual
Page 102
Labor Rates
Effective
09/2007
Product Warranty
EEAC325A Service Manual
Section 6 - Product Warranty
Snap-on Tools Company
Limited One (1) Year Warranty
Snap-on Tools Company (the “Seller”) warrants only to the original purchaser that under normal use,
care and service, the Equipment (except as otherwise provided herein) shall be free from defects in
material and workmanship for one year from the date of original invoice. Items such as leads, probes,
external hoses, adapters and all other attachments, supplies and consumables (except as otherwise
provided herein) are warranted for 90 calendar days from the date of original invoice. Filter elements are
not warranted.
SELLER’S OBLIGATIONS UNDER THIS WARRANTY ARE LIMITED SOLELY TO THE REPAIR OR,
AT SELLER’S OPTION, REPLACEMENT OF EQUIPMENT OR PARTS WHICH TO SELLER’S
SATISFACTION ARE DETERMINED TO BE DEFECTIVE AND WHICH ARE NECESSARY, IN
SELLER’S JUDGEMENT, TO RETURN THIS EQUIPMENT TO GOOD OPERATING CONDITION. NO
OTHER WARRANTIES, EXPRESS OR IMPLIED OR STATUTORY, INCLUDING WITHOUT
LIMITATION ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, SHALL APPLY AND ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED.
This Warranty does not cover (and separate charges for parts, labor and related expenses shall apply
to) any damage to, malfunctioning, inoperability or improper operation of the Equipment caused by,
resulting from or attributable to (A) abuse, misuse or tampering; (B) alteration, modification or adjustment
of the Equipment by other than Seller’s authorized representatives; (C) installation, repair or maintenance
(other than specified operator maintenance) of the Equipment or related equipment, attachments,
peripherals or optional features by other than Seller’s authorized representatives; (D) improper or negligent
use, application, operation, care, cleaning, storage or handling; (E) fire, water, wind, lightning or other
natural causes; (F) adverse environmental conditions, including, without limitation, excessive heat,
moisture, corrosive elements, dust or other air contaminants, radio frequency interference, electric power
failure, power line voltages beyond those specified for the Equipment, unusual physical, electrical or
electromagnetic stress and/or any other condition outside of Seller’s environmental specifications; (G)
use of the Equipment in combination or connection with other equipment, attachments, supplies or
consumables not manufactured or supplied by Seller; or (H) failure to comply with any applicable federal,
state or local regulation, requirement or specification governing emission analyzers and related supplies
or consumables.
Repairs or replacements qualifying under this Warranty will be performed on regular business days during
Seller’s normal working hours within a reasonable time following purchaser’s request. All requests for
Warranty service must be made during the stated Warranty period. This Warranty is nontransferable.
Snap-on Tools Company
Kenosha, Wisconsin 53141-1410
Effective
09/2007
Page 103
KoolKare Plus +™ EEAC325A Rev. C (09/2007)
Printed in U.S.A.