Refrigeration Service Operations 11-24
Receiver Tank Pressure Solenoid Valve (RTPS)
Removal
1. Recover the refrigerant charge.
2. Remove the coil from the valve.
3. Unsolder the hot gas lines from the valve. Remove the valve from the unit.
CAUTION: Use a heat sink or wrap the valve with wet rags to prevent damage.
Installation
1. Clean the tubes for soldering.
2. Remove the coil from the valve. Place the valve in position in the unit.
3. Solder the inlet and outlet connections. After the valve cools, install the coil on the valve.
CAUTION: Use a heat sink or wrap the valve with wet rags to prevent damage.
4. Replace Drier.
5. Pressurise the refrigeration system and test for leaks.
6. If no leaks are found, evacuate the system.
7. Recharge unit with correct refrigerant. Check the compressor oil level.
Purge Valve (PV)
NOTE: Valves that have nylon seats must be disassembled before soldering.
Removal
1. Recover the refrigerant charge.
2. Remove the coil and disassemble the valve.
3. Unsolder the refrigeration lines from the valve, and remove the valve form the unit.
CAUTION: Use a heat sink to prevent damaging the valve.
Installation
1. Clean the tubes for soldering.
2. Remove the coil and disassemble the valve. Place the valve in position in the unit.
3. Solder the inlet and outlet connections. After the valve cools, assemble the valve and install the coil.
CAUTION: Use a heat sink to prevent damaging the valve.
4. Replace Drier.
5. Pressurise the refrigeration system and test for leaks.
6. If no leaks are found, evacuate the system.
7. Recharge the unit with the correct refrigerant.
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