When an A/C System has been opened to the atmosphere, such as during installation or repair, it must be evacuated using a R-134a refrigerant Recovery/Recycling/Charging System. (If the system has been open for several days, the receiver/dryer should be replaced, and the system should be evacuated for several hours).
Connect an R-134a refrigerant Recovery/Recycling/Charging System to the high-pressure service port and the low-pressure service port as shown. Make sure to follow the equipment manufacturer's instructions.
- Open the high-pressure valve to charge the system to the specified capacity, then close the supply valve, and remove the charging system couplers. The refrigerant capacity is 36.1-37.9 oz (1025-1075 g).
- Check the system for leaks using a suitable R-134a refrigerant leak detector with an accuracy of 0.5 ox (14g) per year or better.
- If you find leaks that require the system to be opened (to repair or replace hoses, fittings, etc.) recover the A/C as outlined in this section.
- After checking and repairing leaks, the A/C system must be evacuated, as outlined in this section.