Heating and Air Conditioning: Service Precautions

A/C System and Refrigerant R134a, Safety Precautions







A/C Service Station VAS 6007A (and other or currently available service stations)

CAUTION:
- It is recommended to have an eye-flushing bottle available.
- If liquid refrigerant has come in contact with your skin and eyes, immediately flush with cool water for 15 minutes. Afterwards instill eye drops and consult a doctor immediately, even when the eyes are not hurting.
- The doctor must be informed that the injury was caused by refrigerant R134a. Should refrigerant come into contact with other parts of the body despite compliance with safety regulations, these must likewise be rinsed immediately for at least 15 minutes with cold water.
- Work on refrigerant system should only be performed in ventilated areas (workshops). Switch on existing ventilation systems.
- Refrigerant must not be stored in low-level areas (e.g. cellars) and corresponding exits or light wells.

- Do not attempt repair on filled air conditioning systems by soldering, brazing or welding. This applies also for welding and soldering work on the vehicle, in the event that parts of the A/C system may heat up. When performing paint work repairs, the temperature in the drying booth or preheating zone must not exceed 80 degrees C.

Reason
Exposure to heat gives rise to considerable pressure in the system, which could cause the pressure relief valve to open.

Corrective Action
- Discharge refrigerant circuit using service station.

NOTE: Always replace damaged and/or leaking A/C system components. Do not attempt repair by soldering, brazing or welding.

Refrigerant vessels (e.g. charging cylinders of A/C service station) must never be subjected to excessive heat or exposed to direct sunlight.

Corrective Action
Vessels must never be completely filled with liquid refrigerant. Without sufficient room for expansion (gas cushion), vessels will rupture with devastating effect in the event.