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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
Summary of Contents for T-1000R
Page 14: ...Safety Precautions 2 6 Warning Decals 2e24151g0 ...
Page 34: ...Maintenance Inspection Schedule 4 10 ...
Page 57: ...Unit Description 5 23 Purge Mode UT Series 1 3 4 5 2 ...
Page 67: ...Unit Description 5 33 Zone 1 Cool and Zone 2 Cool UT SPECTRUM Units ...
Page 69: ...Unit Description 5 35 Purge Mode UT SPECTRUM Units ...
Page 71: ...Unit Description 5 37 Zone 1 Cool and Zone 2 Heat UT SPECTRUM Units ...
Page 72: ...Unit Description 5 38 ...
Page 74: ...Diesel Electric Menu 6 28 Adjust Brightness 6 29 Time 6 30 ...
Page 120: ...Operating Instructions Standard HMI 7 18 ...
Page 152: ...Engine Maintenance 9 14 T Series Fuel and Oil System Components TK 376 ...
Page 154: ...Engine Maintenance 9 16 T Series Fuel and Oil System Components TK 270 ...
Page 156: ...Engine Maintenance 9 18 UT Series Fuel System Components AMA768 ...
Page 172: ...Engine Maintenance 9 34 T Series Engine Mounting Components for 2 Cylinder Engine ...
Page 184: ...Engine Maintenance 9 46 ...
Page 238: ...Refrigeration Maintenance 10 54 ...
Page 246: ...Clutch Maintenance 11 8 ...
Page 258: ...Structural Maintenance 12 12 ...
Page 264: ...Mechanical Diagnosis 13 6 ...
Page 265: ...14 Electric Standby Diagnosis ...
Page 268: ...Electric Standby Diagnosis 14 4 ...
Page 269: ...15 Refrigeration System Diagnosis ...
Page 272: ...Refrigeration System Diagnosis 15 4 ...
Page 280: ...Remote Evaporators 16 8 ...