Thermo King 088669, Руководство пользователя

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Refrigeration Service Operations (Rev. 04/03)
77
Installation
1. Clean the tubes for soldering.
2. Place the heat exchanger assembly in the evaporator
housing and install the mounting hardware loosely.
3. Solder liquid inlet and suction outlet line connections
on the condenser side of the bulkhead. Seal openings
through bulkhead with putty when refrigerant lines
have cooled off.
4. Tighten the heat exchanger mounting hardware
securely.
5. Solder suction line connection to the evaporator coil.
6. Connect the equalizer line flare fitting to the suction
line and liquid outlet line flare fitting to the expansion
valve.
7. Pressurize the low side and test for leaks. If no leaks are
found, evacuate the unit.
8. Clean the suction tube to a bright polished condition.
Install the feeler bulb clamps and 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
operation will be faulty. Wrap with insulating tape.
9. Open the refrigeration valves and place the unit in oper-
ation. Install refrigerant charge.
10. Test the unit to see that the expansion valve is properly
installed.
HIGH PRESSURE CUTOUT SWITCH
Removal
1. Pump down the compressor and equalize pressure to
slightly positive.
2. Front seat the discharge and suction service valves.
Release remaining pressure from the discharge service
valve.
3. Disconnect the wires and remove the high pressure cut-
out switch from the compressor cylinder head.
Installation
1. Apply a refrigerant locktite to the threads of the high
pressure cutout switch.
2. Install and tighten high pressure cutout switch and
reconnect the wires.
3. Pressurize the refrigeration system and test for leaks.
4. If no leaks are found, open the refrigeration valve and
place the unit in operation.
HIGH PRESSURE RELIEF VALVE
Removal
1. Remove the refrigerant charge.
2. Unscrew and remove the high pressure relief valve.
Installation
1. Apply a refrigerant locktite to the threads of the high
pressure relief valve.
2. Install and tighten the high pressure relief valve.
3. Pressurize the refrigeration system and test for leaks.
If no leaks are found, evacuate the system.
4. Recharge the unit with refrigerant and check the com-
pressor oil.
PILOT SOLENOID
Removal
1. Pump down the low side and equalize pressure to
slightly positive.