Working On Refrigerant Circuit

No components of the heating and A/C system can be serviced.

• We recommend replacing faulty components with original parts. Evaporators must comply with applicable SAE Standards.

No welding or soldering processes must be performed on the vehicle if there is the danger of heating up the A/C system.

Reason:

Exposure to heat creates considerable pressure in the system, which could cause it to burst.

-- Discharge the refrigerant circuit.

In order to prevent unnecessary moisture penetration immediately close all open components and wire connections when performing repair work at the A/C system.

Reason:

Moisture will penetrate into A/C system components if they are left open for a lengthy period. If this is the case, air conditioners cannot be refilled without having to replace parts of the system.

• If it is necessary to empty the refrigerant circuit of the A/C systems, this process is described in the respective procedure. Furthermore, these work procedures may only be performed by trained personnel. Refer to Refrigerant Circuit (A/C System with Refrigerant R134a, Refrigerant Circuit, Working with A/C Service Station), Working with A/C Service Station or Working with A/C Service Station .

There is risk of destroying the refrigerant lines.

The refrigerant lines can be destroyed by ripping through the inner foil.

-- Never bend the refrigerant lines to a radius smaller than r = 100 mm.