For the central air conditioner, the compressor is the key equipment for cooling and heating of the air conditioner unit, and the compressor is also a device that is often prone to failure. The maintenance of the compressor is also a very common maintenance business. Today, I will introduce the reasons and solutions for the compressor always holding the shaft.
First. The main reasons for the failure of the central air-conditioning compressor holding the shaft (stuck cylinder) are as follows:
1. Mechanical reasons inside the compressor.
2. The compressor has no refrigeration oil or lacks refrigeration oil.
3. During the installation and maintenance process, abnormal varies entered the equipment.
4. The refrigeration system contains residual moisture and air, and the cooling effect of the compressor is reduced or blocked or rusted.
5. During the handling process of installation or moving the compressor, it is damaged by external force.
Second. The Measures to prevent the compressor from holding the shaft.
1. During installation and maintenance the compressor, should be ensured the Airtightness of the refrigeration system to prevent the leakage of the refrigeration system. Therefore, a professional service company must be invited to operate, and And strictly in accordance with the requirements of the operation specifications of the manufacturer for operation.
2. The refrigeration system must meet the vacuum degree required by the equipment manufacturer and meet the manufacturer's requirements and specifications.
3. For the part of the pipeline, the length should be shortened as much as possible, and a reasonable oil return bend should be designed.
4. The height difference between the indoor unit and the outdoor unit must meet the requirements of the manufacturer.
5. Avoid adding refrigerant under heating.
6. When installing and maintaining,Filling with nitrogen into system to blow dirt, protect the interface when passing through the wall.
7. Check the status of the lubricating oil.
8. During maintenance, you should observe the phenomenon of leakage of refrigerant and refrigeration oil, and the color of the oil. You can add refrigeration oil to the compressor according to the actual situation, and replace the refrigeration oil if necessary.
Third, the method of judging the compressor shaft
1. Confirm the power supply voltage and whether the capacity of the starting capacitor is normal and meets the requirements.
2. Check whether the compressor winding is short-circuited or open-circuited.
3. Whether the compressor is overheated protection (lack of refrigerant, poor heat dissipation conditions).
Fourth, the compressor maintenance method of holding the shaft
It should be reminded that the compressor is a precision equipment and is highly professional. When dealing with faults such as the compressor holding the shaft, be sure to ask a professional maintenance engineer to deal with it, do not deal with it yourself, it is easy to have bigger failures, Find a professional engineer, one can guarantee the quality of maintenance, the other can find the root cause, and evaluate whether there is a need for maintenance, saving time and cost.
Post time: Apr-09-2022