Remote Evaporator Refrigeration Service Operations
131
Liquid Return Valve
Replacement
Removal
1. Pump down the low side and equalize the
pressure to slightly positive.
2. Remove the access panels.
3. Unsolder the lines and remove the check
valve.
NOTE: Disassemble the valve before
unsoldering.
Installation
1. Clean the tubes for soldering.
2. Place the disassembled check valve in
position. The arrow on the valve body
indicates the direction of refrigerant flow
through the valve.
3. Solder the inlet and outlet connections. After
the valve cools, reassemble the valve.
4. Pressurize the low side and test for leaks.
5. If no leaks are found, evacuate the low side.
6. Install the access panels.
7. Open the refrigeration valves and run the unit.
Check the refrigerant charge and compressor
oil.
Heat Exchanger
Removal
1. Pump down the low side and equalize the
pressure to slightly positive.
2. Remove the access panels.
3. Remove the mounting hardware used to
mount heat exchanger to the panel.
4. Unsolder the refrigeration lines from the heat
exchanger ports and remove it from the unit.
Installation
1. Clean the tubes for soldering.
2. Position the tubes in the proper ports on the
heat exchanger.
3. Reinstall the mounting hardware used to
mount heat exchanger to the panel.
4. Solder the refrigeration lines from the heat
exchanger ports to the tubes.
5. Pressurize the refrigeration system and test for
leaks.
6. If no leaks are found, evacuate the low side.
7. Install the access panels.
8. Open the refrigeration valves and run the unit.
Check the refrigerant charge and compressor
oil. Add as required.
CAUTION: Use a heat sink to prevent
damage to nearby valves.
CAUTION: Use a heat sink to prevent
damage to nearby valves.
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Страница 4: ...4 ...
Страница 25: ...Unit Description 25 Figure 3 Zone 1 Cool Zone 2 Cool and Zone 3 Cool Zone 3 Zone 2 Zone 1 AGA168 ...
Страница 27: ...Unit Description 27 Figure 4 Zone 1 Cool Zone 2 Cool and Zone 3 Heat Zone 3 Zone 2 Zone 1 AGA169 ...
Страница 30: ...Unit Description 30 Figure 9 Front View AJA920 ...
Страница 31: ...Unit Description 31 1 Access Panels 2 Defrost Damper Figure 10 Back View 1 2 ARA104 ...
Страница 114: ...Mechanical Diagnosis 114 ...
Страница 116: ...Electric Standby Diagnosis 116 ...
Страница 120: ...Remote Evaporator Specifications 120 ...
Страница 122: ...Remote Evaporator Maintenance Inspection Schedule 122 ...
Страница 128: ...Remote Evaporator Electrical Maintenance 128 ...
Страница 132: ...Remote Evaporator Refrigeration Service Operations 132 ...
Страница 134: ...Remote Evaporator Structural Maintenance 134 ...
Страница 136: ...Remote Evaporator System Diagnosis 136 ...
Страница 140: ...Index 140 ...
Страница 142: ......
Страница 143: ...143 Model 30 Schematic Diagram Page 1 of 2 ...
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Страница 145: ...145 Model 30 Wiring Diagram Page 1 of 4 ...
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Страница 149: ...149 Model 50 Schematic Diagram Page 1 of 2 ...
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Страница 151: ...151 Model 50 Wiring Diagram Page 1 of 5 ...
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