Repair of High Pressure Safety Valve in HVAC System
High Pressure Safety Valve HVAC: Service and Repair
Replacement
1. Remove the relief valve and the O-ring.
NOTE:
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Do not let the compressor oil run out.
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Make sure that no foreign matter enters the system.
2. Clean the mating surfaces.
3. Replace the O-ring with a new one at the relief valve, and apply a thin coat of refrigerant oil before installing it.
NOTE:
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To avoid contamination, do not return the oil to the container once dispensed, and never mix it with other refrigerant oils.
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Immediately after using the oil, reinstall the cap on the container, and seat it to avoid moisture absorption.
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Do not spill the refrigerant oil on the vehicle; it may damage the paint; if the refrigerant oil contacts the paint, wash it off immediately.
4. Install and tighten the relief valve.
5. Charge the system, and test its performance
