Preferred Method

The most accurate method of charging the system is to discharge, evacuate and charge the system using a recovery/recycling device approved for R-134a refrigerant.

CAUTION: Review all Safety Precautions and Warnings before attempting to add refrigerant to the system. Do not add refrigerant to a system that is known to have a leak.

1. Check for leaks. If found correct the leaks.
System Leak Checking
CAUTION: DO NOT use an R-12 manifold gauge set on an R-134a system. The refrigerants are not compatible and system damage will result.
2. Attach manifold gauge set.
3. Discharge the A/C system into a recovery/recycle device.
Refrigerant Recovery
4. Evacuate the A/C system.
Refrigerant System Evacuate
CAUTION: Never add R-12 to a system designed to use R-134a. Damage to the system will result.
5. Charge the A/C system with 1.75 lbs. (28 oz.) of R-134a refrigerant.
Refrigerant System Charge