Refrigerant Circuit, Repair

Refrigerant Circuit, Repair

• All work on components marked with 1) can be repaired, replaced or performed in any workshop (work that does not pertain to refrigerant circuit).

• All refrigerant circuit components not marked with 1) as well as all refrigerant hoses and refrigerant lines can only be repaired or replaced in a workshop equipped with the necessary tools and where the procedures are performed by qualified personnel (the refrigerant circuit must be discharged).

• For the refrigerant line connection points, refer to => [ Refrigerant Circuit, Servicing ] [1][2]Refrigerant Circuit.

• Component Overview, refer to => [ Refrigerant Circuit Components Overview ] Refrigerant Circuit Components Overview.

• The applicable wiring diagrams are found in.

• A data plate in engine compartment indicates the refrigerant used and capacity.

Work on refrigerant system should only be performed in a ventilated rooms (workshops). Ensure that with in 5 meters circumference are no working-pits, basement staircases or shafts. Extraction systems are to be switched on.

Reason:

The escaping refrigerant is not only colorless and odorless, but it is also heavier than air so it displaces oxygen. If refrigerant gas does escape even though all the safety precautions have been followed, there is a risk of suffocating in poorly ventilated areas and in workshop pits - even if it is not noticeable.

• The escaping refrigerant/air mixture should not be inhaled, but should be sucked out via an existing exhaust ventilation system.

CAUTION!
Remove the appropriate fuse(s) before working on electrical wires.

• Disconnect the battery before performing any electric welding on the vehicle.

• Contact corrosion. Refer to => [ Contact Corrosion ] Vehicle Damage Warnings.

Do not attempt repair on filled air conditioning systems by soldering, brazing or welding. This pertains also for welding and soldering work on the vehicle, in the event that parts of the climate control system may heat up.

Reason:

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

Corrective action:

Discharge refrigerant circuit, refer to => [ Refrigerant Circuit, Draining ] Refrigerant Circuit, Draining.

• Damaged or leaking parts of the air conditioner are never to be repaired by welding or soldering them; they are always to be replaced.

When servicing air conditioner, all open components and pipe connections are to be immediately re-sealed.

Reason:

Moisture will enter into air conditioner 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.