low-pressure service port (C) as shown, following the equipment manufacturer's instructions.
3. If the low-pressure does not reach more than 93.3 kPa (700 mmHg, 27.6 in.Hg) in 10 minutes, there is probably a leak
in the system. Partially charge the system, and check for leaks (see Leak Test.).
4. Remove the low pressure valve from the low-pressure service port.
System Charging
Use only service equipment that is U.L-listed and is certified to meet the requirements of SAE J2210 to remove
HFC-134a(R-134a) from the air conditioning system.
- Air conditioning refrigerant or lubricant vapor can irritate your eyes, nose, or throat.
- Be careful when connecting service equipment.
- Do not breathe refrigerant or vapor.
If accidental system discharge occurs, ventilate work area before resume of service.
Additional health and safety information may be obtained from the refrigerant and lubricant manufacturers.
1. Connect an R-134a refrigerant
Recovery/Recycling/Charging System (A) to the high-pressure service port (B) as shown, following the equipment
manufacturer's instructions.
2. Add the same amount of new refrigerant oil to system that was removed during recovery. Use only specified refrigerant
oil. Charge the system with 14.8 ± 0.88 oz. (420 ± 25g) of R-134a refrigerant. Do not overcharge the system the
compressor will be damaged.
Refrigerant Leak Test
Always conduct a leak test with an electronic leak detector whenever leakage or refrigerant is suspected and when
conducting service operations which are accompanied by disassembly or loosening or connection fittings.
In order to use the leak detector properly, read the manual supplied by the manufacturer.
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