Refrigeration Service Operations (Rev. 04/03)
112
HIGH PRESSURE RELIEF VALVE
Removal
1.
Remove the refrigerant charge.
2.
Unscrew and remove the high pressure relief valve.
Installation
1.
Apply a refrigerant locktite to the threads 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 refrigerant and check the com-
pressor oil.
PILOT SOLENOID
Removal
1.
Pump down the low side and equalize pressure to
slightly positive.
1.
High Pressure Relief Valve
1
AEA34
2.
Disconnect the lines to the solenoid and immediately
cap to prevent moisture and air from entering the
system.
NOTE: The lines from the three-way valve to the pilot
solenoid will leak refrigerant at a high velocity and
should be capped.
3.
Disconnect the electrical wires and remove the pilot
solenoid.
Installation
1.
Replace the pilot solenoid in the unit.
2.
Remove the caps from the lines and connect lines to the
pilot solenoid. Connect line from the three-way valve
first. Connect wires to the valve.
3.
Open the refrigeration valves and place the unit in oper-
ation.
4.
Check for leaks.
PRESSURE REGULATOR VALVE
Removal
1.
Pump down the low side and equalize pressure to
slightly positive.
2.
Release remaining pressure and unsolder pressure regu-
lator valve from the accumulator tank and suction tube.
Installation
1.
Clean the tubes for soldering.
2.
Place the valve in position and solder connections.
3.
Pressurize the low side and check for leaks.
4.
If no leaks are found, evacuate the low side.
5.
Open the refrigeration valves, and place the unit in
operation. Check the refrigerant charge and add refrig-
erant as required.
Содержание KD-II SR
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