Thermo King SB-III 30 SR+, Manual

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Refrigeration Service Operations (Rev. 04/02)
75
SUCTION VIBRASORBER
Removal
1. Pump down the low side and equalize pressure to
slightly positive.
2. Unsolder the suction hose from the suction service
valve. Unsolder the connection to the accumulator and
remove from the unit.
Installation
1. Prepare the suction hose and tube fittings for soldering
by cleaning thoroughly.
2. Solder the vibrasorber to the suction service valve.
CAUTION: Use a heat sink or wrap vibra-
sorber with wet rags to prevent damaging the
vibrasorber.
3. Solder the suction hose connection to the accumulator.
4. Pressurize the low side and check for leaks. If no leaks
are found, evacuate the system.
5. Open the refrigeration valves and place the unit in oper-
ation.
HIGH PRESSURE CUTOUT SWITCH
Removal
1. Pump down the low side and equalize the pressure to
slightly positive.
2. Front seat the discharge and suction service valves.
Release the remaining pressure.
3. Disconnect the wires and remove the high pressure cut-
out switch from the compressor discharge manifold.
Installation
1. Apply a refrigerant locktite to the threads of the high
pressure cutout switch.
2. Install and tighten the 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 service
valves 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 oil to the O-ring of the high pres-
sure 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 the proper refrigerant and check
the compressor coil.