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Refrigeration Maintenance
10-39
EVAPORATOR COIL REPLACEMENT
Removal
1. Recover the refrigerant charge.
2. Remove the evaporator top panel.
3. Unsolder the hot gas line and the line to the expansion valve from the distributor.
4. Unsolder the suction line from the evaporator coil.
5. Remove the mounting bolts and slide the coil from the evaporator housing.
Installation
1. Place the evaporator coil in the housing.
2. Install and tighten the mounting bolts.
3. Clean the tubes for soldering.
4. Solder the suction line to the evaporator coil.
5. Solder the hot gas line and the line from the expansion valve to the distributor.
6. Pressurize the system and check for leaks.
7. If no leaks are found, replace the liquid line drier then evacuate and dehydrate the system.
8. Install the evaporator top panel.
9. Recharge the unit with refrigerant and check the compressor oil.
EXPANSION VALVE REPLACEMENT
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. Remove the feeler bulb from the suction line clamp. Note the position of the feeler bulb on the suction line.
3. Unsolder the equalizer line from the expansion valve.
4. Unsolder the inlet liquid line and the line to the distributor from the expansion valve.
5. Remove the expansion valve mounting bolt and remove the expansion valve from the unit.
Installation
1. Install and bolt the expansion valve assembly in the unit.
2. Solder (95-5 Solder) the inlet liquid line and the distributor to the expansion valve.
3. Solder (95-5 Solder) the equalizer line to the expansion valve.
4. Clean the suction line to a bright polished condition. Install the feeler bulb clamps and the feeler bulb on the side of the suction
line in its former position. The feeler bulb must make good contact with the suction line or the operation will be faulty. Wrap
with insulating tape.
1.
Suction Line
2.
Capillary Bulb
3.
End View
Location of Expansion Valve Bulb
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 ...