Electrical A/C Compressor, Replacing Without Needing To Clean Refrigerant Circuit
Special tools and workshop equipment required
- Commercially available scale up to 10 kg
If an A/C compressor is replaced that did not have mechanical damage, but rather for another complaint such as an electrical fault or outer damage, the refrigerant circuit does not have to be cleaned.
-- Discharge the refrigerant circuit. Refer to REFRIGERANT CIRCUIT, DISCHARGING .
-- Remove the A/C compressor. Refer to A/C COMPRESSOR, REMOVING AND INSTALLING .
-- Weigh and note the weight of the old A/C compressors without plugs or such components which are not included in the delivery package of the new A/C compressor.
-- Weigh the new A/C compressor without the plug and bolts and note the weight.
-- Pour as much refrigerant oil out of the new A/C compressor via the HD and ND connection in a clean container until the weight of the old A/C compressor is reached.
If clean refrigerant oil is emptied from a new A/C compressor in a clean container and this is closed air tight, this can be reused to adjust the refrigerant oil quantity in the circuit.
- If not enough refrigerant oil can be poured out of the A/C compressor to reach the weight of the old A/C compressor (up to an additional weight of XXXX g), then the old and new A/C compressor must be flushed out. This the residual amount of the refrigerant oil in the A/C compressor is determined and adapted. Refer to the information below.
-- Clean the old A/C compressor and note the flushed out quantity of refrigerant oil. Refer to ELECTRICALLY DRIVEN A/C COMPRESSOR, CLEANING .
-- Clean the new A/C compressor and note the flushed out quantity of refrigerant oil. Refer to ELECTRICALLY DRIVEN A/C COMPRESSOR, CLEANING .
Risk of damaging the A/C compressor due to incorrect refrigerant oil.
- Use refrigerant oil, which corresponds to the specifications of the A/C compressor manufacturer. Refer to the Parts Information.
-- Fill the new A/C compressor with the quantity of fresh refrigerant oil, which corresponds to the quantity that was flushed out of the A/C compressor.
If for example 70 cm3 refrigerant oil is flushed from a faulty A/C compressor (a small quantity of refrigerant oil remains in the A/C compressor and in the A/C Service Station) the in this case fill 70 cm3 refrigerant oil in the new A/C compressor (do not use the refrigerant oil that was flushed out of the replacement compressor as it may have become contaminated while in the A/C Service Station).
If a greater quantity of refrigerant oil (more than approximately 40 cm3 ) has been flushed out, the remaining refrigerant oil can also be added to the evaporator, a refrigerant line or the reservoir/receiver/dryer/inner heat exchanger. Refer to Refrigerant Circuit and APPROVED REFRIGERANT OILS AND REFRIGERANT OIL CAPACITIES .
-- Assemble, evacuate and fill the refrigerant circuit. Refer to WORKING WITH A/C SERVICE STATION .