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Safety instructions for handling tetrafluorethane refrigerant R134a

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WARNING: Injury hazard!
Refrigerant circuit is under high pressure! Work on the refrigerant circuit may only be carried out by experts!
Draw off refrigerant without fail BEFORE  all repair work on the refrigerant circuit.
The refrigerant circuit is depressurized AFTER suction.
  • The pressure gauge on the A/C service unit must be checked for the actual pressure drop prior to repair work.

It is absolutely essential to read and observe the relevant operating instructions for the A/C service unit used!

Protective measures/rules of conduct: 

First aid measures: