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HVAC System Compressor Refrigerant Oil Checking: Overview GMC Envoy I

PLACING SYSTEM IN OPERATION

After component service or replacement has been completed, evacuate system thoroughly with a vacuum pump. Charge system with proper amount of refrigerant. See REFRIGERANT OIL & R -134a REFRIGERANT CAPACITY TABLE. Perform leak test. After system has been leak tested, check system operation.

Note. A/C systems normally will not need additional refrigerant oil unless oil loss has occurred due to ruptured lines, leaking compressor seals, compressor overhaul or component replacement.