Refrigeration Service Operations (Rev 6/98)
90
PILOT SOLENOID
Removal
1.
Remove the refrigerant.
2.
Disconnect the wires. Remove the coil from the valve.
3.
Unsolder the refrigeration lines.
4.
Remove the mounting bolts and remove the valve.
Installation
1.
Replace the coil from the valve.
2.
Place the valve in the unit and install the mounting
bolts.
3.
Solder the refrigeration lines to the valve.
4.
Install the coil and connect the wires.
5.
Pressurize the refrigeration system and test for leaks. If
no leaks are found, evacuate the system.
6.
Recharge the unit with the proper refrigerant and check
the compressor oil.
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.
Remove 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.
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 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.
THROTTLING VALVE
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.
Remove the suction service valve and line from the
compound gauge.
4.
Unbolt and remove the throttling valve from the unit.
Содержание Super II SR+
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