Refrigerant System Evacuation

REFRIGERANT SYSTEM EVACUATION

NOTE: Mazda Motor Company recommends use of an A/C service center to carry out recovery, evacuation and charging of the refrigerant system If an A/C service center is not available, system recovery, evacuation, and charging may be accomplished using a separate vacuum pump charging cylinder, and manifold gauge set.

1. Connect an R-134a service center to the low- and high-pressure service gauge port valves.
2. Evacuate the system until the low-pressure gauge reads at least 99.4 kPa (29.5 in.Hg) of vacuum and as close as 101.1 kPa (30 in-Hg) as possible. Continue to operate the vacuum pump for a minimum of 45 minutes.
3. Turn off the evacuation pump. Observe the low-pressure gauge for five minutes to make sure that the system vacuum is held. If vacuum is not held for five minutes, leak-test the system, service the leaks, and evacuate the system again.