112
TK 61555-2-MM-EN
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.
A new high pressure cutout switch does not have a connector installed. Use the old
connector and just install new wire terminals, or install a new connector and wire terminals.
Refer to the appropriate Parts Manual for the correct connector and terminal part numbers.
2.
Place a new copper sealing washer on the high pressure cutout switch.
3.
Install the high pressure cutout switch and torque it to 27 ± 3 N•m (20 ± 2 ft-lb).
4.
Connect the wires.
5.
Pressurize the compressor and test for leaks.
6.
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.
Apply a refrigerant locktite to the threads of the high pressure relief valve.
4.
Pressurize the refrigeration system and test for leaks. If no leaks are found, evacuate the
system.
5.
Recharge the unit with the proper refrigerant and check the compressor oil level.
Mechanical Throttling Valve (non-ETV Units)
Removal
1. Pump down the low side and equalise pressure to 0 psig, (0 bar g).
2. Front seat the discharge and suction service valves.
3. Remove the suction valve and pilot solenoid line.
4. Unbolt and remove the throttling valve from the unit.
N
No
otte
e:: If the throttling valve joints are leaky and/or the rubber cap is detached or missing, the
refrigerant may be contaminated and should be recovered.
Disassembly/Repair
1. Remove the piston end cap (round end).
2. Remove cotter pin from the castle nut and remove nut.
3. Remove the spring and piston.
