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DIAMOND DIAGNOSTICS
Service Manual
Diamond Diagnostics Inc
Holliston, MA. USA
www.diamonddiagnostics.com
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Service Manual Contents
Chapter 1........................................................................................................................................................1
Product Description ................................................................................................................................1
1.a System Overview .................................................................................................................................1
1.b Front and Rear Assembly Components ..............................................................................................4
1.c Electrode Housing Assembly Components .........................................................................................8
1.d Replacement List ...............................................................................................................................10
Chapter 2......................................................................................................................................................11
Troubleshooting......................................................................................................................................11
2.a Troubleshooting Overview.................................................................................................................11
2.b Troubleshooting Guide ......................................................................................................................12
2.c DC Power Verification .......................................................................................................................13
2.d Display Verification ............................................................................................................................13
2.e Probe Motor Verification ....................................................................................................................14
2.f Printer Verification .............................................................................................................................15
2.g Sample Detector Verification .............................................................................................................16
2.h Serial Communication Verification.....................................................................................................17
Chapter 3......................................................................................................................................................18
Repair .........................................................................................................................................................18
3.a Repair Overview ................................................................................................................................18
3.b Recommended Tools ........................................................................................................................18
3.c Rear Housing Removal .....................................................................................................................19
3.d Rear Housing Installation ..................................................................................................................19
3.e Power Supply Removal .....................................................................................................................21
3.f Power Supply Installation ..................................................................................................................21
3.g Printer Removal .................................................................................................................................22
3.h Printer Installation..............................................................................................................................22
3.i
CPU Board Removal .........................................................................................................................25
3.j
CPU Board Installation ......................................................................................................................25
3.k Display Removal................................................................................................................................27
3.l
Display Installation.............................................................................................................................27
3.m Pump Motor Removal........................................................................................................................30
3.n Pump Motor Installation.....................................................................................................................30
3.o Probe Motor Assembly Removal .......................................................................................................32
3.p Probe Motor Assembly Installation ....................................................................................................32
3.q Guide Rod Removal ..........................................................................................................................35
3.r Guide Rod Installation .......................................................................................................................35
3.s Electrode Jack Removal....................................................................................................................37
3.t Electrode Jack Installation.................................................................................................................37
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P R O L Y T E
1
Chapter
A N A L Y Z E R
Product Description
1.a
System Overview
The proLYTE analyzer is designed to make service and repair quick and easy. Modular construction is used
throughout the design. The basic operating system consists of a motor which drives the peristaltic pump.
The peristaltic pump draws the desired fluid through the system. A second motor drives the sample probe
through the solutions valve to aspirate the appropriate fluid for pumping: sample; standards; or air. The
sample detector in the fluid path communicates the position of the fluid in the line.
Please note that mechanical and electrical assemblies can be replaced. Follow the instructions in the
TROUBLESHOOTING SECTION to determine if assembly replacement is necessary. Refer to the
Replacement List in this section which lists replaceable assemblies, components, and appropriate part
numbers.
1
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P R O L Y T E
A N A L Y Z E R
RUN CALIBRT’N
YES
NO
ANALYZE BLOOD?
YES
Whole Blood, Serum, or Plasma Analysis
NO
DAILY CLEANER?
YES
End/Beginning of Day Cleaning
NO
STANDBY MODE?
YES
Fluid Conservation, Maintenance
NO
*SECOND MENU?*
YES
NO
*ANALYZE URINE?*
YES
Urine Analysis
NO
*SEE RESULTS?*
YES
Results Displayed, Printed, Deleted
NO
*PACK USAGE?*
YES
Check % Pack Used, Install New Pack, Reset % Countdown
NO
*QUAL
CONTROL?*
Run Controls, See Last Control, See/Print Statistics,
Delete Results
YES
NO
*OPER FUNCTS?*
“On Demand” Calibration, Wash, Solution Prime, Probe Wiping,
I.D.#, Syringe Sample, Diluted Values
YES
NO
*DIAGNOSTICS?*
Check: Calibration Values; Fluid Flow; Electrode Values; Sample
Detector; Pump Calibration
YES
NO
*DATE/RANGES?*
st
Change Date/Time, Cal Frequency, 1 Cal, Set Na/K/Cl Ranges
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YES
NO
P R O L Y T E
A N A L Y Z E R
Table of Symbols
▲
NOTES
Helpful information or references to
other related sections of the manual.
KEY INFORMATION
Could take the proLYTE analyzer out
of operation.
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P R O L Y T E
1.b
A N A L Y Z E R
Front and Rear Assembly Components
This section describes the main assemblies of the proLYTE front and rear assemblies. Refer to Figures P1,
P2, and P3 for the location of each component.
Front Housing front case of the analyzer
Power Supply powers the analyzer
Entry Module connection for the power cable
Fuse Bay holds 2 fuses
Power Supply Cable connects the power supply to the CPU assembly
Voltage Selector to select 110V or 220V power source
CPU Board contains the CPU board with digital components and analog
sensor inputs:
Auto-Sampler Port port for Auto-Sampler device
Serial Port port for RS-232 for serial device
Display Assembly shows proLYTE prompts/results on LCD screen
Display Screen 2 line display
Display/Sample Detector Cable connects the display to the CPU assembly and sample detector to
the display board
Peristaltic Pump Assembly peristaltic pump to move fluids through the analyzer
Peristaltic Pump Motor powers pump
Peristaltic Pump Head Assembly contains pump rotor and rollers
Peristaltic Pump Connection connects the pump to the CPU assembly
Probe Motor Assembly moves the probe arm
Linear Actuator powers lead screw
Probe Motor Support holds probe motor assembly in place
Sample Probe Position Locator indicates the home position for the sample probe arm
Optical Switch senses the location of the probe arm using the position locator and
connects to the CPU board
Probe Arm holds and moves the probe to aspirate samples and calibrants
Printer prints a hard copy of analysis, diagnostics or maintenance results
Printer Cable connects the printer to the CPU assembly
Electrode Jack(s) connects electrodes to the CPU assembly
Rear Housing rear case
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P R O L Y T E
A N A L Y Z E R
Paper Feed Button
Printer
Front Housing
Rear
Housing
Probe
Arm
Sample
Probe
Display
Screen
Electrode
Jacks
Yes/No
Touchpad
Solutions
Valve
Peristaltic
Pump
Figure P1 Front Assembly
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P R O L Y T E
A N A L Y Z E R
Probe
Position
Locator
Display
Cable
CPU
Board
Serial
Port
Linear
Actuator
Auto-Sampler
Port
Power
Supply
Cable
Optical
Switch
Connection
Printer
Cable
Linear
Actuator
Connection
Voltage
Selector
Peristaltic
Pump
Connection
Entry
Module
AC/AC Step
Down
Transformer
Power
Supply
Figure P2 Rear Assembly
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Fuse
Bay
P R O L Y T E
A N A L Y Z E R
Electrode
Jacks
CPU
Mounts
Probe
Motor
Support
Optical
Switch
Peristaltic
Pump
Assembly
Peristaltic
Pump Motor
Figure P3 – Rear Assembly
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P R O L Y T E
1.c
A N A L Y Z E R
Electrode Housing Assembly Components
This section describes the components of the proLYTE electrode assembly.
Refer to Figure P4 for the location of each component.
Electrodes sodium, potassium, chloride, and reference
Sample Detector detects presence of air/liquid, sets sample position inside electrodes
Internal Filling Solution 2 molar KCL solution, acts as a “salt bridge” for the reference
electrode
Fill Plug prevents the internal filling solution from evaporating
Membrane Assembly creates the connection between the reference electrode and the other
electrodes
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P R O L Y T E
A N A L Y Z E R
Membrane Assembly
Fill Plug
Fill Solution
Electrode Housing
Sample Detector
Potassium Electrode
Sodium Electrode
Chloride Electrode
Locating
Pins
Reference
Electrode
Figure P4– Electrode Housing Assembly
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P R O L Y T E
1.d
A N A L Y Z E R
Replacement List
Description
Electrode Housing Na/K/Cl
Power Supply
CPU Board
Display, 2 Line
Pump
Probe Motor Assembly
Sample Probe Position Sensor
Stepper Motor Daughter Board
Printer
Electrode Jack
Part No.
ME-0885D
ME-1676D
ME-1937D
ME-1901D
ME-1271D
ME-1392D
ME-1306D
ME-1148D
ME-1296D
ME-0173D
The CPU Board is supplied with the software installed to operate the proLYTE.
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P R O L Y T E
A N A L Y Z E R
2
Chapter
Troubleshooting
2.a
Troubleshooting Overview
This section describes troubleshooting of the mechanical and electrical functions of the proLYTE analyzer.
This section is based on the principle of replacing suspected faulty assemblies with new assemblies.
Diamond Diagnostics recommends keeping an inventory of functioning test assemblies for
troubleshooting the proLYTE. Refer to the Troubleshooting Guide in this section to determine the cause and
corrective action that must be taken to properly service the proLYTE analyzer.
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P R O L Y T E
2.b
A N A L Y Z E R
Troubleshooting Guide
Refer to the chart below to help determine the problem and corrective action needed.
Problem
Description
Blank Display
Problem
Source
Power Malfunction or
Defective Display
Corrective Action Steps
No Response
to YES/NO
buttons
Power Malfunction or
Defective Display
Connection
Display Assembly
Verification
DC Power Verification
Blank Display,
Beeping
Faulty
EEPROM
Installation or
Power Malfunction
Inspect EPROM
Installation
DC Power Verification
“PRB” Errors
Probe Motor
Malfunction
Pump Motor
Malfunction
Probe Motor Verification
“PMP” Errors or No
Pump Movement
AC Power Verification
DC Power Verification
Display Verification
Perform PUMP CAL test
In DIAGNOSTICS?
Menu Pump Motor
Verification
Printer Verification
Printer Does
Not Print
Sample
Detector Test
Failure Result
255 Or 000
Printer
Malfunction
Sample
Detector/Circuit
Malfunction
Bad Electrode
Voltages
Electrodes or Signal
Input Malfunction
Check Electrode Installation
And Performance
Signal Input Verification
Serial Transmission
Failure
Serial Cable or
Transmission
Protocol
Serial Communication
Verification
Sample Detector
Verification
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P R O L Y T E
2.c
A N A L Y Z E R
DC Power Verification
1. Remove the rear housing. See Rear Housing Removal in the REPAIR SECTION for
details.
2. Connect the power cord first to an outlet, then to the entry module.
3. Connect the reference side of the voltage meter to TP12 on the CPU board.
4. Verify the voltage at each test point listed below.
Test Point
TP1
TP2
TP3
TP10
TP11
Value
5.00 V
36.0 V
5.00 V
2.50 V
-5.00 V
Tolerance
+/- 0.15 V
+/- 2.0 V
+/- 0.15 V
+/- 0.10 V
+/- 0.15 V
5. If any of the voltage values in STEP 4 are not within specification, AND the AC
power verification is successful, replace the CPU board.
2.d
Display Verification
1. Disconnect the display cable from the CPU board. See Display Assembly Removal in the
REPAIR SECTION for details.
2. Connect a known good display assembly to the CPU board and connect the main
power cord. Verify that the test display is operative. Based on the test results, take the
appropriate corrective action.
-Display Blank and/or YES/NO buttons DO NOT operate:
Remove the test display cable. Perform AC and DC power
verification. If the AC and DC power tests are successful, replace the
CPU board with a new CPU board, and return to normal operation.
See CPU Board Removal in the REPAIR SECTION for details.
-Display On and YES/NO buttons function:
Remove the original display assembly and replace with a
new display assembly.
See Display Assembly in the REPAIR SECTION for details.
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P R O L Y T E
2.e
A N A L Y Z E R
Probe Motor Verification
1. Disconnect the power cord, wait ten seconds, then reinstall the power. The probe
arm should move down and back up. If there are no error messages, resume normal
operation. If a “PRB” error occurs, proceed to STEP 2.
2. Remove the sample probe from the probe arm. For details refer to proLYTE
Operator’s Manual. Remove and reinstall the power cord. The probe arm should move
down and back up. If there are no error messages examine and if necessary replace
the sample probe, solutions valve and/or probe wiper. If a “PRB” error occurs,
proceed to STEP 3.
3. If the probe arm does not move at all perform the following operations.
A. Visually inspect that the actuator and retaining ring are correctly installed on the
probe motor lead screw. If the installation is incorrect, refer to CPU Board
Removal and Probe Motor Installation in the REPAIR SECTION for details.
B. Check that the probe motor wires are completely seated inside the 4-pin
connector as follows:
-
Remove the probe motor connector from the bottom left of
the CPU Board (position P3).
Compress the strain-relief cap against the probe motor
connector to firmly seat the wires.
Reinstall the probe motor connector into the CPU Board.
C. Repeat STEP 1. If no errors occur, resume normal operation.
4. If the probe arm moves and stops anywhere except the top position, or if the probe
arm vibrates against the top of the proLYTE housing, replace the probe position
sensor. To replace the sensor, first remove the CPU Board and the probe position
locator. Refer to Probe Motor Assembly Removal in the REPAIR SECTION for details.
5. If the probe does not move at all, check for a short circuit on the CPU Board
between TP12 and TP2. If there is a short circuit, replace the Stepper driver daughter
board at positions U35 and U36. See Front and Rear Assembly Components in the Product
Description Section.
6. If no short circuit is found, replace the probe motor assembly. Refer to the Probe
Motor Assembly in the REPAIR SECTION for details.
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P R O L Y T E
2.f
A N A L Y Z E R
Printer Verification
1.
Press the printer paper advance button. If the printer head moves proceed to
STEP 2. If the printer head does not move, proceed to STEP 3.
2.
Verify that the printer is on. Turn the printer on by pressing “NO” to the
PRINTER OFF? question in the USER OPTIONS section.
3.
If the printer is still not working, remove the power cord from the analyzer and
wait for ten seconds, then install the power cord back into the entry module. The
printer head should move across the paper and the paper should advance forward
printing “proLYTE”.
4.
If the printer is still not working, remove the printer cover and check for any
paper obstruction in the printer head area. Remove any obstructions if possible,
without damaging the printer assembly or printer window. If an obstruction is
present and cannot be removed, replace the Printer Assembly. Refer to Printer
Removal and Installation in the REPAIR SECTION for details.
5.
If there are no obstructions, but the printer does not work, perform the following
steps.
a.
b.
c.
d.
6.
Remove the rear housing as detailed in the REPAIR SECTION.
Remove the printer cable at the bottom right of the CPU board.
Compress the strain-relief cap to firmly seat the printer cable.
Reinstall the printer cable into the CPU Board.
If the printer still does not print, connect a test printer assembly to the CPU
Board. If the test printer works, install a new printer assembly. If the test printer
does not work, replace the CPU board. Refer to CPU Board Installation in the
REPAIR SECTION for details.
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P R O L Y T E
2.g
A N A L Y Z E R
Sample Detector Verification
1. Remove the electrode housing from the analyzer. See the proLYTE Operator’s Manual
for further details.
2. Remove the sample detector from the front housing.
3. Install the sample detector into the sample detector receptacle.
▲ Do not install the electrode housing or pump tubing at this time.
4. Proceed to the DIAGNOSTICS? menu and perform the SAMPLE DETECTOR
TEST?.
-With the sample detector installed, the value on the display screen should be less
than 200.
-With the test in progress, remove the sample detector. The display should rapidly
change to 255.
If the sample detector test meets these specifications, resume normal operation.
A value of 255 with the sample detector installed indicates a bad connection. Proceed
to STEP5 to check the sample detector circuit.
5. Reinstall the sample detector. Look at the left side of the sample detector. A red light
must shine from the LED hole. If there is no red light, install a known good sample
detector. If there is still no red light, replace the Display Assembly. Refer to the
REPAIR SECTION for information.
6. If the TEST sample detector red light is on, check the four connecting pins on the
ORIGINAL sample detector. The pins must face straight out forming a rectangle. If
the pins are bent against the black plastic body, straighten the pins using a small flat
head screwdriver.
7. Reinstall the original sample detector and repeat STEP 4.
-If the red light comes ON: Reassemble the proLYTE and perform a SOLUTIONS
PRIME and a SAMPLE DET. TEST. Resume normal operation.
-If the red light remains OFF: Install a new sample detector.
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P R O L Y T E
2.h
A N A L Y Z E R
Serial Communication Verification
1.
Connect the proLYTE analyzer to a device with a known working serial port. Use
a known good proLYTE serial cable, part no. ME-1334D. Make cross
connections as required (e.g. 2 to 3; 4 to 5).
2.
Refer to the following serial interface specifications.
Serial Interface Specifications
Serial Cable Settings
Connector
Pin Type
25-pin, D-Sub Male
RS-232
Pin Assignments
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 7
RS-232 Protocols
Transmission Rate
Bit Configuration
Bit Parity
Control Codes
All lines end with Carriage
return line feed (CRLF)
All transmission is ASCII string
3.
Chassis, Not Connected
TxD
RxD
RTS
CTS
Signal Ground
1200 baud
8 data bits, 1 stop
None
None
When correctly linked the proLYTE will transmit to the external device all of the
data that is printed by the proLYTE printer, in the same format.
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P R O L Y T E
A N A L Y Z E R
3
Chapter
Repair
3.a
Repair Overview
Always consult the TROUBLESHOOTING SECTION first to determine the problem before
attempting to repair the analyzer.
Always remove the solutions pack and the electrode housing from the
analyzer before beginning any repair work. Refer to the proLYTE
Operator’s Manual for detailed instructions.
Follow the assembly and removal instructions in the order outlined in this section unless otherwise
noted. Always unplug the power cord from the analyzer before beginning any repair work.
Note that only complete mechanical and electronic assemblies can be replaced. Refer to the Replacement
List in the PRODUCT DESCRIPTION SECTION which lists replaceable assemblies as well as
consumable items. Consult the list to determine the appropriate replacement item and part number.
3.b
Recommended Tools
The following is a list of the tools required to perform repairs on the proLYTE analyzer.
Please refer to this list to determine the appropriate tool and size needed.
0.050 Hex Driver
5/16” Hex Driver
3/16” Hex Driver
Phillips Screw Driver, One Small
Phillips Screw Driver, One Large
Allen Wrench, 1/16 inch
Scissors
Hex Nut Driver, 11/32 inch, electrode jack installation and removal tool
Volt Meter
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P R O L Y T E
3.c
A N A L Y Z E R
Rear Housing Removal
1. Disconnect the power cord from the entry module, see figure below.
2. Detach the four screws from the rear housing using a Phillips head screw driver, as
shown below.
3. Separate the front and back housing. See Figure P5.
3.d
Rear Housing Installation
1. Align and attach the front and back housing. See figure below. Verify that all cable
connectors are attached properly. Refer to figures in the PRODUCT DESCRIPTION
SECTION for detail. Verify that all wires are contained within the front housing
before proceeding.
2. Perform steps 1 and 2 from Rear Housing Removal in reverse .
Figure P5 –
Rear Housing
Removal
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P R O L Y T E
A N A L Y Z E R
Figure P5 – Rear Housing Removal (Cont)
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P R O L Y T E
3.e
A N A L Y Z E R
Power Supply Removal
1. Disconnect the power supply cable from the CPU board, see Figure P6.
2. Detach the four screws from front housing, using a Phillips head screw driver.
3. Remove the four screws holding the power supply.
4. Lift and remove the power supply assembly from under the CPU board.
▲ Support analyzer when power supply is removed to avoid tipping.
3.f
Power Supply Installation
1. Slide the power supply assembly under the CPU board, as shown in figure below. Fit
into the alignment holes in the bottom of the front housing.
2. Perform steps 1,2 and 3 from Power Supply Removal in reverse.
Figure P6 – Power Supply
Removal/Installation
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P R O L Y T E
3.g
A N A L Y Z E R
Printer Removal
1. Remove the printer lid from the printer.
2. Remove the paper roll from the printer bay.
3. Remove the rear housing.
4. Detach the printer cable from the retaining clamps located along the right side of the
CPU board.
5. Detach the two screws using a Phillips head screw driver. Remove the printer body, as shown in
Figure P7.
6. Pull the printer cable up from behind the CPU board, while holding the printer body as shown in
Figure P8.
3.h
Printer Installation
1. Slide the printer cable behind the CPU board.
2. Install the printer body into place. See Figure P8.
3. Attach the two screws using a Phillips head screw driver. See Figure P7.
4. Connect the printer cable to the CPU board.
5. Using scissors, cut the beginning of the paper roll into a “V” shape. Insert the paper into the feeder
slot inside the printer bay, and press the paper feed button.
6. Place the printer roll into the printer bay.
7. Place the printer lid onto the printer.
8. Attach the printer cable to the retaining clamps located along the right side of the CPU board.
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P R O L Y T E
A N A L Y Z E R
Printer Bay
Figure P7 – Printer Removal/Installation
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P R O L Y T E
A N A L Y Z E R
Printer
Connection
Figure P8 – Printer Removal/Installation
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P R O L Y T E
3.i
A N A L Y Z E R
CPU Board Removal
1.
Remove the display cable from the top of the CPU board shown in Figure P9.
2. Disconnect the electrode jacks from behind the CPU board. See figure below for the location of
the electrode jacks. To disconnect, gently pull electrode jack straight away from the connector pin
of the CPU board.
▲ The connector pins are extremely delicate. Avoid pin breakage when removing the electrode jacks,
gently pull the electrode jacks straight away from the pins. If a pin breaks the entire CPU board will
require replacement.
3. Disengage the CPU board from the four plastic mounting posts as shown.
4. Slide the CPU board off the mounting posts. See Figure P9.
3.j
CPU Board Installation
1. Align the CPU board with the plastic mounting posts. Snap the right side mounting posts of the
CPU board into place.
2. Connect the electrode jacks to the back of the CPU board. To connect, gently push the electrode
jack straight into the connector pin. See figure below to determine the proper connector pin
position on the CPU board and the recommended installation order.
▲ Do not bend the connector pin when installing the electrode jack. If a pin breaks the
entire CPU board will require replacement.
3. Snap the left and center mounting posts of the CPU board into place.
4. Attach the display cable to the CPU board. Push the display cable tabs to the front to secure cable
in place. See Figure P9.
5. Connect the probe motor, sensor, pump motor, power supply and printer cables to the CPU
board, see Figure P9.
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P R O L Y T E
A N A L Y Z E R
Figure P9 – CPU Board Removal/Installation
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P R O L Y T E
3.k
A N A L Y Z E R
Display Removal
1. Detach the two screws from the sample detector board using a Phillips head screw driver.
2. Move and hold the display cable to expose the three display assembly screws. Detach the three
screws from the display assembly using a Phillips head screw driver. See Figure P10.
3. Carefully remove the display cable from the LCD screen, holding both items together. See Figure
P11.
▲ Notice the orientation of the LCD screen which is extremely important when installing the display
assembly. The display has soldered leads located on the bottom of the LCD screen.
▲ There is an orientation notch on the display adapter. The display mounts on the two posts below
the window. When installing the display adapter, the orientation notch is located on the top inside
edge of the adapter.
3.l
Display Installation
1. Place the foam pad on the display board between the screen and mounting plate.
2. Place the LCD screen on top of the foam pad. The orientation of the LCD screen is extremely
important, see Figure P11. The display has soldered leads located on the bottom of the LCD
screen.
3. Position the front housing so that the front of the analyzer is facing down. Align the display
assembly and insert into place, as shown in Figure P11. Use mounting holds as a guide.
4. Hold the display in place and attach the three screws using a Phillips head Screw driver. See Figure
P10.
5. Align the sample detector board so the sample detector cable is positioned on the right side. Attach
the two screws lightly, using a Phillips head screw driver, see Figure P10.
6. Install the sample detector in the front of the analyzer to verify the sample detector board
alignment. When properly aligned fully tighten the sample detector screws.
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P R O L Y T E
A N A L Y Z E R
Figure P10 – Display Removal/Installation
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P R O L Y T E
A N A L Y Z E R
Figure P11 – Display Removal/Installation
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P R O L Y T E
3.m
A N A L Y Z E R
Pump Motor Removal
1. Remove the pump tubing from the front of the analyzer.
2. Detach the four screws from the front of the analyzer, using a Phillips head screw driver or 1.5
Hex as applicable. See Figure P12.
3. Remove the pump motor assembly, as shown in Figure P13.
3.n
Pump Motor Installation
1. Install the pump motor assembly through the front housing, as shown in Figure P13. The pump
motor wires are positioned below the pump when properly aligned.
2. Attach the four screws into the front of the analyzer, using a Phillips head screw driver. See Figure
P12.
3. Using a tie wrap cable, secure the loose wires under the pump motor to the lead screw/probe
motor wires and the sensor wires.
4. Install the pump tubing.
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P R O L Y T E
A N A L Y Z E R
Figure P12 – Display
Removal/Installation
Figure P13 – Display
Removal/Installation
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P R O L Y T E
3.o
A N A L Y Z E R
Probe Motor Assembly Removal
1. Detach the screw at the top of the probe position locator, using a Phillips head screw driver, as
shown in figure below. Remove the washer.
2. Remove the probe position locator.
3. Remove the retaining ring from the actuator, using the retaining ring pliers. The retaining ring must
be replaced once removed. DO NOT stretch out the retaining ring with the pliers. Disengage the
actuator from the top of the lead screw assembly.
▲ Save the retaining ring.
4. Detach the three screws from the probe motor bracket, using a Phillips head screw driver, as
shown in Figure P14.
5. Remove the probe motor/lead screw assembly.
3.p
Probe Motor Assembly Installation
1. Place the probe motor assembly into place. See Figure P14.
2. Attach the three washers and screws to the probe motor assembly bracket, using a Phillips head
screw driver. See Figure P14.
▲ The other two screws are located on the bottom edge of the bracket.
3. Insert the actuator through the top of the lead screw assembly. Install the retaining ring onto the
actuator using the retaining ring pliers. DO NOT stretch out the retaining ring with the pliers.
4. Place the probe motor cable wires into the retaining clamp. Secure the wires to the sensor cable
wires with a tie wrap cable.
The optimum location for the tie wrap cable is slightly to the left of the retaining clamp.
5. Install the solutions valve.
6. Remove the black thumb grip from the solutions valve. Install the sample probe as normal. Refer
to Figure P14 for details.
A. With the probe hole facing to the left, toward the inside body of the proLYTE,
align the probe collar with the notch on the top of the probe arm. When
aligned, snap the probe into the probe arm.
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P R O L Y T E
A N A L Y Z E R
B. Manually move the probe arm until the sample probe hole is aligned with the
top chamber on the solutions valve.
▲ When the sample probe is aligned, DO NOT move the probe arm until the
probe motor installation is complete.
7
Place the locator into position. The locator should be seated inside the probe position sensor and
inside the mounting bracket slot.
8. Attach and slightly tighten the washer and screw at the top of the position locator. Do not fully
tighten the screw.
9. Align the probe position locator slot within the center of the optical switch. Gently move the
locator to the left and visually confirm the alignment. Refer to Figure P2 for correct alignment.
▲ Confirm that the sample probe hole is aligned with the top chamber on the solutions valve
before continuing.
10. When alignment is complete, fully tighten the probe position screw into place using a Phillips head
screw driver.
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P R O L Y T E
A N A L Y Z E R
Figure P14 – Probe Motor
Removal/Installation
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P R O L Y T E
3.q
A N A L Y Z E R
Guide Rod Removal
1. Remove the sample probe from the probe arm and the solutions valve. Remove the solutions
valve.
2. Detach the screw from the bottom of the guide rod, using a Phillips head screw driver. Remove the
washer.
3. Remove the guide rod and probe arm assembly, down and away from the housing.
3.r
Guide Rod Installation
1. Install the guide rod. To install, first insert the guide rod into the alignment hole located in the top
wall of the front assembly.
2. Attach the washer and screw to the bottom of the guide rod, using a Phillips head screw driver.
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P R O L Y T E
A N A L Y Z E R
Figure P15 – Guide Rod
Removal/Installation
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P R O L Y T E
3.s
A N A L Y Z E R
Electrode Jack Removal
1. Insert the electrode jack wires into the supplied 11/32 inch nut driver.
2. Remove the hex nuts using the nut driver.
3. Pull the electrode jacks from the front housing of the analyzer, as shown in Figure P16.
3.t
Electrode Jack Installation
1.
Push the electrode jacks through the holes in the front of the analyzer, see Figure P16.
2.
Insert the electrode jack wires into the 11/32 inch nut driver.
3.
Attach the hex nut using the nut driver and tighten.
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P R O L Y T E
A N A L Y Z E R
Figure P16 – Electrode Jack
Removal/Installation
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