Do you know when the compressor needs to be changed oil?

If cleaning for a long time, the cleaning agent is dirty, and the filter is also clogged and dirty. You should replace the cleaning agent filter before proceeding. After washing, the cleaning agent can be recovered, and it can be reused after treatment. The cleaning agent in the reservoir must be recovered from the liquid pipe. After cleaning, the refrigeration pipeline should be purged with nitrogen and dried. Shanghai Decoration Design Company feels that there are fewer conditions for the existing cleaning equipment cleaning methods. If this equipment is not available, the method of high-pressure nitrogen blowing can be used.

The color of the compressor refrigerating oil turns green (there is water in the system). Treatment method: The refrigeration system consumes very little refrigerating oil during normal operation. When there are moisture and air impurities in the refrigeration system, they will react chemically with the refrigerating oil and refrigerant. The metal powder produced by friction, the oxide film produced by inspection and welding, and the sludge produced by corrosion will contaminate the refrigerating oil, and even cause oxidation in the refrigeration system to form copper oxide, and add moisture to change the oil color of the refrigerating oil. green.

If the vacuum in the refrigeration system is good, the color of the refrigerating oil when it is normal is white, clear and transparent. If the refrigerating oil is slightly yellowish, it can still be used. But if it is yellow or red or brown, and there is a tar smell, it is necessary to check the winding and insulation of the compressor motor, replace the refrigerating oil and clean the system, and specially treat the supercooling tube group.

When the oil color turns green, moisture is added to the oil, and the burnt smell is great. To deal with this kind of failure, firstly, the loss of the compressor is large, because this kind of failure phenomenon is mostly the system leaking point, long-term continuous use will cause high temperature wear of the compressor. (In normal conditions, it is cooled by oil return and air return), because the compressor winding insulation is damaged to varying degrees due to poor oxidation and heat dissipation conditions. Air-conditioning maintenance felt that if the compressor is badly verified, it is better to update it to ensure the repair effect. Because the above factors have a great influence on the use.