High Pressure Safety Valve HVAC: Service and Repair
Relief Valve / Replacement1. Recover the refrigerant with Recovery/Recycling/Charging System Refrigerant Recovery.
2. Remove the relief valve and the O-ring. Plug the opening to keep foreign matter from entering the system and the compressor oil from running out.
NOTE:
- Do not let the compressor oil run out.
- Make sure there is no foreign matter in the system.
3. Clean the mating surfaces.
4. Replace the O-ring with a new one at the relief valve, and apply a thin coat of refrigerant oil (ND-OIL 8: P/N 38897-PR7-A01AH or 38899-PR7-A01) before installing it.
5. Charge the system, and test its performance
6. Check for leaks, and insert the cap in the top of the valve.