Thermo King T-1000R, Maintenance Manual

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Refrigeration Maintenance 10-34
DISCHARGE STRAINER REPLACEMENT
Removal
1. Recover the refrigerant charge.
2. Remove the discharge strainer mounting clamp.
3. Unsolder the refrigeration lines from the discharge strainer and remove the discharge strainer from the unit.
Installation
1. Clean the tubes for soldering.
2. Place the discharge strainer in position.
3. Solder the inlet and outlet connections.
4. Install the discharge strainer mounting clamp.
5. Pressurize the refrigeration system and test for leaks.
6. If no leaks are found, replace the liquid line drier then evacuate the system.
7. Recharge the unit with proper refrigerant and check the compressor oil.
ELECTRONIC THROTTLING VALVE (ETV) TESTING
The ETV is controlled and monitored by the SR-2/SR-3 Microprocessor Control System. Alarm Code 89 (Check Electronic
Throttling Valve Circuit) indicates a possible problem with the ETV. Refer to the appropriate Microprocessor Diagnostic Manual
for information about testing the ETV.
ELECTRONIC THROTTLING VALVE (ETV) REPLACEMENT
NOTE: The Old Style ETV is being replaced with the New Style ETV starting in 09/16. There are some physical differences,
but they are functionally the same.
Removal
1. Pump down the low side and equalize the pressure to slightly positive. Make sure to front seat the suction service valve to
isolate the low side and use the suction access port to access the low side.
2. The ETV must be open to remove the stepper motor and piston assembly. Open the ETV by placing the unit in the Evacuation
Mode/Test, and then turning the unit off. Refer to the appropriate Microprocessor Diagnostic Manual for information about
the Evacuation Mode/Test.
3. Old Style ETV - Disconnect the ETV harness from the four-pin connector on the main wire harness.
New Style ETV - Disconnect the four-pin connector on the main wire harness from the four-pin connector on the ETV.
1. Small Hex on Stepper Motor
2. Large Nut
3. Valve Body
Old Style ETV
1
2
3
1. Four-Pin Connector
2. Stepper Motor
3. Valve Body
New Style ETV
ARA2498
3
2
1