Thermo King 914 724, Руководство пользователя

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51
Refrigeration Service Operations
NOTE: It is generally good practice to replace the filter drier whenever the high side is opened or when the low side is
opened for an extended period of time.
COMPRESSOR
Removal
1. Remove the refrigerant charge from the system.
2. Loosen the drive belt adjuster (engine driven compres-
sor) or the electric motor mounts (standby compressor)
and remove the compressor drive belt.
3. Disconnect the discharge, suction and liquid injection
hoses.
4. Keep the compressor ports and the suction and dis-
charge lines for the compressor covered to prevent con-
tamination of system components.
5. Remove compressor mounting screws. Remove the
compressor.
Installation
NOTE: Any compressor installed in this system must con-
tain the proper amount of compressor oil (see the Specifi-
cations chapter). Always check to make sure that the
compressor contains the proper amount of oil. Follow the
system cleanup procedures to remove old oil from the sys-
tem.
1. Place the compressor in position and install the mount-
ing screws and the belt.
2. Use belt tension tool P/N 204-427 to adjust belt ten-
sion. The engine/compressor belt tension should be
adjusted to 58 on the gauge; the electric motor/com-
pressor belt should be adjusted to 57.
3. Connect the refrigeration hoses. Pour 2 oz (59 ml) of
compressor oil into the suction hose before installation.
4. Pressurize the system and test for leaks.
5. Evacuate the system and recharge.
CONDENSER COIL
Removal
1. Remove the refrigerant charge.
2. Remove the cover.
3. Remove the condenser fan and motor.
4. Remove the inlet and liquid lines.
5. Remove the mounting screws and nuts.
6. Remove the condenser coil.
Installation
1. Clean the tubes for soldering.
2. Place the coil in the unit and install the screws and nuts.
3. Solder the inlet and liquid line connections.
4. Pressurize the system and test for leaks.
5. Evacuate the system.
6. Recharge the unit.
7. Reinstall the cover.
FILTER DRIER
Removal
1. Pump down the refrigeration system and equalize the
pressure to slightly positive.
2. Disconnect the ORS nuts at the ends of the drier.
3. Loosen the mounting hardware and remove the drier.