Note:
- Use only the sensor set for HFC-134a (R-134a).
- Use a vacuum pump adapter with a built-in one-way valve to prevent pump oil from entering the system.
Warning
When working with HFC-134a refrigerant (R-134a):
- Always wear eye protection.
- Do not allow refrigerant to come into contact with your skin or eyes.
If this happened, then:
-Do not rub your skin or eyes.
-Rinse eyes or skin with plenty of cold water.
-Consult a doctor or medical facility for immediate help, do not try to help yourself.
- Store HFC-134a refrigerant containers (R-134a) at temperatures below 40°C.
- Stay away from open flames; the refrigerant itself is not flammable, but produces toxic gases when in contact with a flame.
- Work in a well-ventilated area. The refrigerant evaporates very quickly and can displace all the air in a small enclosed space.
1. Close the outlet valve (two-valve set - release blocking valve).
Three valve set:
2. Open containers.
3. Open the high pressure valve to charge the system to approximately 98 kPa (1.0 kgf/cm2), then close the valve.
4. Check the system for leaks using a gas detector for R-134a.
Note: Spot check for leaks around the compressor, condenser and tank/drier.
5. If you find any leaks, tighten the nuts or bolts of the connections to the specified torque.
6. Recheck the system for leaks with a detector,
7. If you find leaks again, this requires opening the system (for repair or replacement of hoses, connections, etc.), release all available charge from the system.
8. After checking (and/or elimination) leaks, the system must be completely discharged.
Two valve set: