OIL CONTROLS
OMA TRAXOIL
A PPLICATION
¶ Compressor crankcase oil level protective control
¶ Warranty requirement for Copeland ZF, ZB and ZS
refrigeration scroll compressors
¶ Recommended for Copeland, Carlyle, Bitzer and
other semi-hermetic compressors
F EATURES
¶ Self contained unit with oil level sensor and
integral solenoid to manage oil level supply
¶ Hall-effect sensor for precise measurement
of oil level
¶ Alarm and status indication by LEDs
¶ SPDT output contact for compressor shutdown or alarming
¶ Easy installation by sightglass replacement
¶ Adapters suitable for various types of
compressors including conventional and
scroll compressors
¶ Signal generated by gravity based float - not
prone to errors from foaming like optical
sensors
¶ Debris retention magnet for reliable operation
¶ UL recognized
S PECIFICATIONS
¶Maximum Working Pressure:
¶Solenoid MOPD:
¶Supply Voltage:
¶Solenoid Coil:
¶Current Consumption:
¶Time delay for Low Level
Signalling:
¶Time Delay After Setpoint
Recovery
¶Alarm Delay Time
(including alarm contact)
¶Alarm Switch:
¶Alarm Contact Rating:
NOMENCLATURE
Example: OMA JB1S/T ASC2 24 50/60
OMA
JB
Alco Oil
JB - Junction Box
Management
MA - Stress
Control
Relief
Connector
1
1 - TraxOil
2 - Oil Watch
ORDERING INFORMATION
PCN*
064340
064341
063678
063520
063521
048638
064811
064812

‚
FOR
S/T
Oil Inlet
FTG 1/4” SAE
S/T - Straight
ANG - Angle
ASC2 24 50/60
Solenoid Coil Model
Number, Voltage,
Frequency
(Included)
OMA TRAXOIL
DESCRIPTION
T R A X OI L
OMA-JB1 S/T ASC 2 24/50-60 - STD
OMA-MO1 ANG ASC 2 24/50-60 - Hussmann Protocol
A DAPTERS ( TO ATTACH T RAX O I L TO COMPRESSOR FOR NEW
INSTALLATIONS ONLY - S E E T ABLE ON P AGE 258)
OMA-ACB ADAPTER (Copeland Scroll ZF, ZS, ZB)  - KS30349
OMA-ACA ADAPTER (Copeland Scroll ZF, ZS, ZB) ‚ - KS30350
OMA-AUA ADAPTER (Semi Hermetic Universal) - KS30348
S ERVICE P ARTS
Inlet Flare Screen - X11176-7
Sight Glass and O-Ring - KS30367
O-Rings (3 pieces) - KS30368
7 1/2 - 15 HP
6 HP and smaller
Standard Product Offering
¶Refrigerant Compatibility:
(not for use with flammable
refrigerants or ammonia)
¶Refrigerant Temp.:
¶Storage and Transpor t Temp.:
¶Ambient Temp. (Housing):
¶Oil Supply Fitting:
500psig
300 psi
24 V AC, 50/60 Hz
Alco AMF or ASC2
24 V AC, 50/60 Hz
0.6A
10 seconds
10 seconds
120 seconds
SPDT
1.2A @ 125VAC
50/60
0.6A @ 250VAC
50/60
HFC,HCFC, CFC
180oF Maximum
120oF Maximum
120oF Maximum
1/4" Male SAE
D IMENSIONAL D ATA
4.76”
3.1”
*Product Code Number
NOTE: An adapter kit is required for new installations.
ALCO CONTROLS
TraxOil unit must be mounted horizontally
for correct operation.
257
OMA ADAPTERS
OMA - AUA - 063521 Includes: (3) O-Rings,
3 Bolts, 3 Washers and 3 Nuts
Flange Adapter 3/4”
2.36”
.98”
• 3 holes (.26”)
• 4 holes (.26”)
• O-ring seal (1.3” x 1”)
1.65”
S EMI -H ERMETIC
U NIVERSAL A DAPTER
C OPELAND S CROLL
ZS, ZB (2-6 HP)
• Thread NPTF male
ZF,
• Teflon seal
• Additional flange ring for adapter/base unit
connection (included)
1.6”
OMA - ACA - 063520 Includes: Sight Glass,
(2) O-Rings and 3 Bolts
Screw Adapter 3/4”-14 NPTF
1.83”
OMA - ACB - 063678 Includes: Sight Glass,
(2) O-Rings and 3 Bolts
Screw Adapter 1-1/8”-12 UNF
• Thread UNF
C OPELAND S CROLL
• O-ring seal (.86” x 1”)
ZF, ZS, ZB (7 1/2
• Additional flange ring for adapter/base unit
connection (included)
1.13”
1.57”
OIL CONTROLS
TRAXO IL OIL MANAGEMENT SYSTEM
- 15 HP)
1.57”
1.22”
NOTE: Sight Glass PCN 064811 required for Bitzer 4-hole pattern compressor.
OMA OIL WATCH
The Alco OMA-JB2 Oil Watch is designed to monitor
a compressor’s oil level and signal an alarm if the oil
level is not adequate. The OMA-JB2 can be used to
shut-down the compressor in addition to it’s alarm
capability. For use on single compressor applications
without oil separators.
F EATURES
¶ Self contained unit
¶ SPDT alarm output
¶ Installs directly over compressor
sight glass
¶ Junction box standard
¶ UL recognized
258
ORDERING INFORMATION FOR OMA OIL WATCH
PCN
063841
ALCO CONTROLS
DESCRIPTION
OMA-JB2
OIL CONTROLS
A-W & A-F OIL SEPARATORS
APPLICATION
¶ Multiple compressor racks for supermarkets and
air conditioning
¶ Systems with long refrigerant lines
¶ Systems with inherent oil return problems
¶ Ultra-low temperature systems
¶ For use with HCFCs, HFCs and their lubricants
FEATURES
¶ Hermetic welded or accessible bolted flange
construction
¶ Solid copper connections
¶ Corrosion resistant paint
NOMENCLATURE
Example: AW 5582 4
A
W
Alco
5582
W = Welded
F = Flanged
S PECIFICATIONS
4
Competitive
Cross
Reference
¶ Maximum working pressure: 450 psig
¶ U.L listed (file #5168)
¶ C.S.A. Listed (LR100624)
Connection
Size
(in 1/8”)
ORDERING INFORMATION AND CAPACITY TABLE
MODEL NO.
R22/R407C
R502
-40F/C
40F (14C)
-40F/C
40F (14C)
Tons
k W Tons k W Tons
k W Tons
kW
R134a
-40F/C
40F (14C)
Tons k W Tons k W
R-404A/R-507
-40F/C
40F (14C)
Tons
k W Tons k W
PCN*
A-F 58824
060877
A-W 55824 060933
1
3.54
1.5
5.31
1.5
5.31
2
7.08
1.5
5.31
2
7.08
1
3.54
1.75
6.2
1.5
5.31
2
7.0
A-F 58855
060878
A-W 55855 060934
3
10.62
4
14.2
4.5
15.9
5.5
19.5
4.75
16.8
5.75
20.36
3.25
11.5
4.5
15.9
4
14.16
5.5
19.0
A-F 58877
060879
A-W 55877 060931
4.5
15.93
5.5
19.5
7
24.8
8
28.3
7.5
26.6
8.5
30.09
4.75
16.8
6.5
23
6.5
23.01
8.5
30.0
A-F 58889
060759
A-W 55889 060974
6
21.24
7.5
26.6
9
31.9
11
37.2
9.5
33.6
11.5
40.71
6.5
23
8.5
30.1
8.5
30.09
11
38.0
A-F 589011 060760 A-W 559011 060930
7.5
26.55
10
35.4
11.5
40.7
14
47.8
12
42.5
14.5
51.33
8
28.3
11.5
40.7
10.5
37.17
14
49.0
A-F 589213 060761 A-W 559213 060975
9
31.86
11.5
40.7
14
49.6
18
62
16
56.6
17.5
61.95
9.5
33.6
13.25
46.9
14
49.56
17
60.0
A-W 569011 060978
9
31.69
12
42.25
13
45.77
14
49.8
15
52.8
20
70.4
9.5
33.4
13.7
48.2
11
38.7
19
66.9
A-F 579213 060875 A-W 569213 060979
11
38.94
14
49.6
16
56.6
18
63.7
20
70.8
24
84.96
11.8
41.6
16
56.6
17.5
61.95
23
81
A-F 579417 060876 A-W 569417 060980
17
60.18
22
77.9
25
88.5
30
106
30
106
35
123.9
18
63.7
25.25
89.4
26
92.04
34
121.0
–
PCN*
40F (14C)
Tons
kW
FLANGED
–
SEALED
R12
-40 F/C
Tons
kW
Standard Product Offering
*Product Code Number
SEALED UNITS: A-W
MODEL
NO.
A-W 55824
A-W 55855
A-W 55877
A-W 55889
A-W 559011
A-W 569011
A-W 569213
A-W 569417
DIMENSIONAL DATA
STYLE
NO.
1
1
1
1
1
1
1
1
CONNECTION
SIZE
1/2 ODF
5/8 ODF
7/8 ODF
1-1/8 ODF
1-3/8 ODF
1-3/8 ODF
1-5/8 ODF
2-1/8 ODF
DIMENSIONS (inches)
A
B
4.00
10.75
4.00
14.25
4.00
17.75
4.00
21.00
4.00
21.25
6.00
15.75
6.00
19.00
6.00
19.50
FLANGED UNITS: A-F
MODEL
NO.
A-F 58824
A-F 58855
A-F 58877
A-F 58889
A-F 589011
A-F 589213
A-F 579213
A-F 579417
ALCO CONTROLS
STYLE
NO.
3
3
3
3
3
3
2
2
CONNECTION
SIZE
1/2 ODF
5/8 ODF
7/8 ODF
1 1/8 ODF
1 3/8 ODF
1 5/8 ODF
1 5/8 ODF
2 1/8 ODF
A
4.00
4.00
4.00
4.00
4.00
4.00
6.00
6.00
DIMENSIONS
B
10.25
14.25
17.75
21.00
21.25
21.63
20.25
20.31
C
5.50
5.50
5.50
5.50
5.50
5.50
4.25
4.50
259
OIL CONTROLS
AOFD 553 OIL FILTER-DRIER
ALCO’s AOFD is designed specifically for refrigerant systems
that use POE oil. POE oil is hygroscopic in nature, which
means that it attracts and absorbs water. Moisture in a closed
system can produce acid and will harm the compressor.
ALCO’s AOFD protects compressors by removing moisture and
trapping contaminants.
F EATURES
¶ Designed to clean and dry POE Oil
¶ 3/8” male flare connections for easy
replacement
¶ Large filter surface area to provide maximum
filtration
¶ Contains 100% molecular sieve XH-9 Desiccant
for moisture removal
¶ Designed to operate at a very low pressure drop
¶ 10 micron filtration for optimum oil cleaning
(Replaces AC&R S-4005)
AOFD W ATER C APACITY T ABLE
DIMENSIONAL DATA
REFRIGERANT
TYPE
R-22
R-134a
R-404A
R-407C
3”
7 1/2”
DROPS
@ 125 O F
497
518
518
435
ORDERING INFORMATION FOR AOFD FILTER-DRIER
9 5/8”
PCN
062829
DESCRIPTION
AOFD 553 OIL FILTER DRIER
ASF 45 F 3-VV OIL FILTER
APPLICATION
¶The ASF 45F3-VV effectively removes debris from oil lines
FEATURES
¶Specifically designed to protect the compressor from dirt and
all solid contaminants
¶Full flow fittings minimizes pressure drop
¶Dual access valves
¶3/8” SAE connections for easy installation on oil lines
¶Filtration to 10 microns for maximum compressor protection
¶Corrosion resistant epoxy powder paint finish
SPECIFICATIONS
¶Maximum working pressure:
¶UL file number:
¶CSA file number:
260
ORDERING INFORMATION FOR ASF
PCN
059999
DESCRIPTION
ASF 45 F 3-VV
* Product Code Number
Standard Product Offering
500 psig
SA 3124
LR 32462
SEE PAGE 237 FOR DIMENSIONAL DATA.
ALCO CONTROLS
OIL CONTROLS
AOF HIGH EFFICIENCY OIL FILTER
DED
MEN
M
O
EC
LL
LY R
HIGH FOR SCRO ORS!
SS
PRE
M
O
C
3.06
APPLICATION
¶ Specifically designed to protect the compressor
from dirt and all solid contaminants including
metallic magnetic particles
7.50
9.63
F EATURES
¶ Corrosion resistant epoxy powder paint finish
¶ 3/8” SAE connections for easy installation on
oil lines
¶ 98% efficient to 4 micron par ticles
¶ Compatible with all oils
SPECIFICATIONS
¶ Maximum working pressure: 500 psig
¶ UL/CUL:
SA 3124
O RDERING I NFORMATION
PCN*
DESCRIPTION
064952
AOF 303
* Product Code Number
AOF HIGH EFFICIENCY TAKE-APART OIL FILTER
APPLICATION
3.75
¶ Specifically designed to protect the compressor
from dirt and all solid contaminants including
metallic magnetic particles
7.38
5.31
F EATURES
¶ Compatible with all oils
¶ Solid copper fittings
¶ Quick change filter cartridge
¶ Corrosion resistant epoxy paint finish
¶ 98% efficient to 4 micron particles
¶ 3/8 ODF connections
AOF 023 S
Take-Apar t Oil
Filter
ORDERING INFORMATION
PCN*
062784
064799
DESCRIPTION
AOF 023S
F023 Car tridge
SPECIFICATIONS
F 023
Replaceable
Filter Car tridge
¶ Maximum working pressure:
¶ UL/CUL:
* Product Code Number
Standard Product Offering
ALCO CONTROLS
500 psig
SA7175
261
OIL CONTROLS
UNIVERSAL ACID TEST Kit
H
BOT
ITH
W
E
ND
US
FOR INERAL A S!
M
OI L
POE
A PPLICATION
The Universal Acid Alert Test Kit provides a
positive indication of whether the acid level
of the refrigeration oil is safe or unsafe.
F EATURES
¶Quick and easy test kit
¶Universal acid test kit for use with all
refrigeration lubricants
¶By changing the percentage of oil
sample taken, the acid number of
the oil can be accurately determined
¶Phase separation of the chemicals in
the kit provide a positive color change
regardless of the color and condition
of the oil
262
O RDERING I NFORMATION
PCN*
DESCRIPTION
064427
AA Kit Universal
* Product Code Number
ALCO CONTROLS
OIL CONTROLS
HFC REFRIGERANTS AND POE LUBRICANTS
Moisture is the major problem causing contaminate for HFC/
POE oil systems just as it was for CFC and HCFC systems using Mineral
oil. Many HFC’s can hold much more water than their CFC counterparts
but the oil differences are much worse than those of the refrigerant.
POE oil can hold as much as 10 times more water than Mineral oils. In
addition, evacuation has proven ineffective at removing this moisture
so a filter-drier is required to perform this function.
1800
Water Content (ppm)
1600
1400
1200
1000
800
600
400
200
0
Mineral POE Oil
Oil
R-12
R-134a
R-22
R-502
R-404A
Water poses a new problem for POE oils above and beyond
those experienced with Mineral oil. POE oil will react with water to
form organic acids at normal operating conditions in refrigerating and
air-conditioning systems. This reaction starts at water levels as low as
75 ppm. These acids attack system components including motor insulation and metallic components reducing system life.
To combat the detrimental effects of water in HFC and POE
oil systems it is imperative to hold moisture levels as low as possible. It
is generally accepted that water level must be maintained less than 50
ppm in the refrigerant and the same for the oil. In order to monitor
system water level a moisture indicator must be used that can sense
changes in moisture in this ppm range.
0.2
Total Acid Number
The use of HFC refrigerants and Polyolester (POE) lubricants for air-conditioning and refrigeration have generated new system
chemistry related problems. New and redesigned system protectors
have been developed to counteract these problems and provide a long,
reliable life for the operating refrigeration system.
0.15
0.1
0.05
0
0
100
200
300
400
500
600
700
Refrigerant Water Concentration (ppm)
Figure 2
Acid Generation in a 1.5 Ton R-134a Air-conditioning System
Many commercial sightglasses cannot indicate a change at this level in
liquid lines that exceed 100°F. This means that harmful organic acids
may be attacking system components while the indicator is showing dry.
The AMI has a unique element that has the ability to change color at low
ppm levels so that proper action can be taken before any system components are damaged.
It was necessary to redesign standard filter-driers for increased
water removal capacity to achieve these low moisture levels. However,
since no system is entirely devoid of water upon startup some organic
acids will be generated and must be removed. The desiccant formulation for the EK and UDK series of filter-driers was designed to provide
the optimal mix of water capacity and acid capacity to ensure that both
harmful contaminates are effectively removed. This desiccant mixture
contains both molecular sieve and activated alumina. The molecular
sieve is specifically designed to provide maximum drying in today’s
systems. The activated alumina is ideal for capturing the large organic
acids that the molecular sieve cannot.
Another aspect of POE oil is the ability to keep more solid
particles in suspension than Mineral oil. This is particularly important
in retrofitted systems where pockets of solid contamination are now
flushed from low flow areas and need to be removed before moving
parts in the system are damaged. The filter-drier for POE oils needs to
have increased solid particle holding capacity with minimal impact to
refrigerant flow capacity or pressure drop.
ALCO CONTROLS
263
OIL CONTROLS
The filter-drier should also have improved contaminate
removal efficiency as well to ensure that all particles are captured
the first time they enter the filter-drier. The ability to remove smaller
particles is also advantageous. The EK series filter-driers provide a
unique combination of these characteristics to provide outstanding
filtration as shown in Figure 3.
Flow Restriction
HFC REFRIGERANTS AND POE LUBRICANTS
EK
Typical drier
Moisture Level (ppm)
Solid Contamination Captured
125
Figure 4
Filtration Capability of Filter-driers
Typical Sightglass
100
75
AMI
50
25
0
75
100
125
R-134a Refrigerant Temperature
Figure 3
Dry Indication Water Level
The filter-driers for use in HFC and POE oil systems must
maintain the system dry and free of any acids that may have been
generated. However, since water capacity is of primary importance
the filter-drier should contain a higher percentage of molecular
sieve than was required for CFC and HCFC systems. But molecular
sieve alone is insufficient since it has virtually no organic acid capacity. An organic acid removal desiccant must be used such as activated alumina to ensure low acid levels are maintained. In addition,
the filter-drier should also have increased filtration capacity and
efficiency. The EK series of filter-driers provides the optimal combination of these properties to ensure the long, trouble-free life of any
air-conditioning or refrigeration system.
264
The moisture indicating sightglass must also indicate moisture
level in the range of less than 50 ppm moisture. Also, it must
be able to perform this function at the temperature of the liquid
line on which it is placed. Many sightglasses cannot perform this
function at all liquid line temperatures. This low level indication
ability is necessary to ensure that the system moisture never
exceeds the level at which organic acid formation starts. The
AMI moisture indicating sightglass provides this low level
detection ability.
ALCO CONTROLS