Escalade V8-5.7L VIN R (2000)
Refrigerant Oil: Service Precautions
The life and and efficient operation of the air conditioning system depends upon the chemical stability of the refrigerant system. Refrigerant-134a and
Polyalkaline Glycol (PAG) refrigerant oil's stability changes when the following materials contaminate the refrigeration system:
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Dirt
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Air
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Moisture
The foreign materials will cause the following to occur:
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Affect the pressure-temperature relationship
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Reduce efficiency
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Cause internal corrosion
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Abnormal wear of moving parts
The following general practices should be followed in order to ensure chemical stability in the system:
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Wipe away any dirt or oil at or near the connection in order to eliminate the possibility of dint entering the system when disconnecting a hose.
Perform the following at both sides of the connection in order to prevent dirt or moisture entering the hose connection
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Cap both sides of the connection
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Plug both sides of the connection
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Tape both sides of the connection
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Keep the manifold gauge set clean and dry. Keep the replacement pants clean and dry.
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Ensure that the container/transfer tube through which the oil flows is exceptionally clean and dry.
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Ensure the refrigerant oil is free of moisture.
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Have everything needed ready when opening the air conditioning system. Do NOT leave the air conditioning system open any longer than
necessary.
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Properly evacuate the open air conditioning system before recharging the air conditioning system.
