Attention. Before any work on the compressor, charge the air conditioning system to the required refrigerant level. If the system malfunction still occurs: perform the checks described below.
Preliminary check
Visually inspect the A/C compressor.
Check for damage or deformation of all system elements and connections.
Make sure the pulley is not impacted or damaged.
Check if the compressor clutch turns on when 12 V is applied to its winding.
Check the condition of the power cable and connector.
Check compressor housing for cracks (at the compressor mounting points).
Check the inlet and outlet of the A/C compressor for damage.
Check by tester «EXXOClim»
Check the air conditioner compressor with a tester.
Note. See the accessory's instruction manual.
Oil level control
Attention. Compressor oil is very hygroscopic, use only new oil when working.
Three options need to be distinguished:
- work with contour (no leaks);
- small leak;
- big leak.
Working with a contour (no leaks)
Using a charge and recirculation unit not equipped with an oil separator:
- drain the liquid from the low pressure circuit as slowly as possible so as not to spill oil out;
- liquid refrigerant charge is made without adding oil.
Using a charge and recirculation unit equipped with an oil separator:
- drain the liquid refrigerant from the air conditioner circuit following the instructions given in the installation instructions;
- measure the amount of oil collected;
- refill with the same amount of oil that was collected.
Small leak
Slow leaks do not result in loss of oil, it is enough to use the same strategy as in the case of working on a circuit that does not have leaks.
Big leak
This type of failure can lead to loss of oil, as well as opening the circuit to atmosphere.
Perform the following operations:
- replace the replaceable filter and dryer element (if necessary);
- remove as much oil as possible (when replacing the element that causes the work).
Before filling or while filling the circuit with R134, a enter 120 cm3 new oil in the circuit.