Special advice
Body Exterior / HVAC / HVAC Service Procedures / DA-RM-03A077-00-001 - Drain/Fill fluid - HVAC refrigerant
WARNING!
 
Welding or soldering work on a closed air-conditioning system.
Risk of explosion.
When closed air-conditioning systems (filled or empty) become heated, high pressures are produced that can ultimately cause the system to burst.
All welding and soldering operations on or near closed air-conditioning systems are prohibited.
 

WARNING!
 
Risk of injury to skin and eyes caused by contact with liquid refrigerant.
Escaping gases pose a risk of suffocation for anyone in a work pit beneath the vehicle.
Contact with liquid refrigerant may cause chilblain-like damage to the skin (due to undercooling).
Always wear safety glasses and protective gloves when working with refrigerant.
Avoid contact with liquid refrigerant.
Suitable evacuation, treatment and charging devices equipped with integral disposal and treatment facilities must be used for evacuating refrigerant.
Even after the system has been evacuated, residual pressure may still be present in the system when loosening couplings. Therefore, loosen the couplings carefully, so that the pressure can dissipate slowly.
 

WARNING!
 
Risk of poisoning caused by inhaling overheated refrigerant vapors.
Refrigerant can decompose when overheated. The resulting substances are toxic and should never be inhaled.
All refrigerant must be evacuated from the entire air-conditioning system prior to doing any repair work on the air- conditioning circuit or components.
Suitable evacuation, treatment and filling devices equipped with integral disposal and treatment facilities must be used for evacuating refrigerant.
A piercing odor can indicate overheated refrigerant - never inhale these vapors. Leave closed rooms immediately and ventilate thoroughly.
All welding, brazing and soldering operations on sealed air-conditioning systems and in their immediate vicinity are prohibited.
Never smoke when working with refrigerant, never expose refrigerant to open flames.
 

   
   
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