Thermo King SB-210, Manual

Page: 121 / 159

Refrigeration Service Operations
121
3. Solder the suction vibrasorber 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 operation.
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. Recover the refrigerant remaining in
the compressor.
3. Disconnect the wires and remove the high
pressure cutout switch from the compressor
discharge manifold.
Installation
1. Apply a refrigerant Loctite 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 compressor 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. Recover 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 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 the proper refrigerant
and check the compressor oil.
Discharge Pressure Transducer
Removal
1. Recover the refrigerant charge.
2. Disconnect the wires and remove the
discharge pressure transducer.
Installation
1. Apply a refrigerant Loctite to the threads of
the discharge pressure transducer.
2. Install and tighten the discharge pressure
transducer and reconnect the wires.
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 oil.
Suction Pressure Transducer
Removal
1. Pump down the low side and equalize pressure
to slightly positive.
2. Disconnect the wires and remove the suction
pressure transducer.
Installation
3. Apply a refrigerant Loctite to the threads of
the suction pressure transducer.
4. Install and tighten the suction pressure
transducer and reconnect the wires.
5. Pressurize the low side and check for leaks. If
no leaks are found, evacuate the low side.
6. Open the refrigeration valves and place the
unit in operation.
CAUTION: Use a heat sink or wrap
vibrasorber with wet rags to prevent
damaging the vibrasorber.