Thermo King 919180, Руководство пользователя

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97
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.
Accumulator
Removal
1. Pump down the low side and equalize the
pressure to slightly positive.
2. Unsolder the inlet and outlet refrigerant
suction lines from the accumulator tank.
3. Unbolt and remove the accumulator from the
unit.
Installation
1. Place the accumulator in the unit and tighten
the mounting bolts.
2. Solder the inlet and outlet suction lines to the
accumulator tank.
3. Pressurize the low side and test for refrigerant
leaks. If no leaks are found, evacuate the low
side.
4. Open the refrigeration valves and place the
unit in operation. Check refrigerant charge
and compressor oil and add as required.
Compressor
Removal
1. Remove the refrigerant from the unit using
approved methods.
2. Loosen and remove the compressor/electric
motor belt from the compressor pulley.
3. Unsolder the discharge line, liquid injection
line, and unbolt the suction valve from the
compressor.
4. Disconnect the high temperature cutout
switch, the pilot solenoid line, and unsolder
liquid injection line.
5. Remove the compressor stabilization bracket
and the compressor mounting bolts.
6. Lift the compressor out of the unit. Keep the
compressor ports covered to prevent dust, dirt,
etc., from falling into the compressor.
NOTE: When the compressor is removed
from the unit, the oil level should be noted,
or the oil removed from the compressor
should be measured so that the same amount
of oil can be added before placing the
replacement compressor in the unit.
Installation
1. Lift the compressor into the unit and install
the mounting bolts and the stabilization
bracket.
2. Install the service valves using new gaskets
soaked in refrigeration oil.
3. Reconnect the high temperature cutout switch,
the pilot solenoid line, and liquid injection
line.
4. Pressurize the compressor and test for
refrigerant leaks.
5. If no leaks are found, evacuate the system.
Replace the compressor/electric motor belt
and adjust the tension.
6. Charge the system with refrigerant.
7. Operate the unit at least 30 minutes and then
inspect the oil level in the compressor. Add or
remove oil if necessary.
8. Check the refrigerant charge and add
refrigerant if needed.