【 Weak current College 】 air conditioning oil plug quick troubleshooting methods---Power By 【 China power house network 】

A gree small jindou KFR a 32GW/3258B air-conditioning, summer, winter heating refrigeration normal effect. The inspection revealed that the mechanism of hot outdoor fan motor and compressor are functioning, ten minutes later, indoor fan motor does not start. Fingered indoor temperature very low pipeline feeling (to prevent blowing cold air at the beginning of the heat-air conditioners are designed anti-cool functions, when the temperature is below the indoor unit of tube 23 ℃. Indoor fan motor will not start). In the process on a pressure gauge pipe, test pressure low about 1.0MPa. Preliminary judging system lacks the fluoride. Will work in refrigeration and air force. No pressure 0MPa. Even negative pressure, more enhanced possibilities of fluoride deficiency. Is preparing to shut down the pressure leak test and found that slowly rose to 0.25MPa. Downtime after pressure gauge pressure recovery is slow (at ambient temperature low. Balanced pressure 0.6MPa), the system also did not necessarily lack of fluorine. In order to prevent false positives. A small amount of added some fluorine. But the heating effect of upturn, the resulting judgment system jams. Because of this purchase is not long, not maintenance, impurities clogging is unlikely, in combination with downtime after pressure gauge pressure recovery is slow, that is the oil plug.

If using conventional methods for processing. The system opens. High pressure nitrogen flushing of pipelines. Time and effort, you will waste a lot of refrigerant. And while the release refrigerant. Compressor refrigeration oil in part also with refrigerant discharge. Easy to cause the compressor to the lack of oil, will be a security risk to the compressor. Then hold a try, decided not to open the system for processing.

During the work in the air conditioning. Compressor in the compresses the refrigerant, a small amount of refrigeration oil will enter the system with the refrigerant with pipeline cycle. Once long outages need not, frozen oil will lower the pipe temperature low concentrations. Refrigeration oil flow mouth piece proposed variation caused by the oil plug. As a rule of thumb, oil plug typically occurs in the capillary tube segment. Forces the air conditioning in the heating mode, using hot air gun on capillary for heating (also available oxygen torch for heating, but the temperature must not be too high or they burn or burn the fused capillary cause blocking dangerous). Heating after a few minutes, close the capillary valve received fluorine. About ten minutes off the thick pipe, complete collection of work. Stop standing 10 minutes. Open the high-pressured valve allows rapid charging refrigerant into the indoor unit. Open low-pressure valve. The air conditioning work in refrigeration, found fault is improving. Continue to use hot air gun on capillary heating. Until normal refrigeration. A few minutes after stopping a rest and let the air conditioning heating State. A few minutes, and refrigeration, so repeated several times, oil plug phenomenon will disappear. After removal oil plug. Another collection of process, you can deliver. In the event of serious oil plug. Can make several received fluorine process. On capillary of the heating time can be extended, where appropriate, are generally able to troubleshoot.

Oil plug typically occurs in the winter the temperature is low, due to pipeline compressor refrigeration oil thicker at low temperatures, it is difficult to return in the low-lying Department gathered by pipeline. Will work in refrigeration and air conditioning, use of condenser temperatures, pressure characteristics, on the outdoor unit to flushing pipe; work in heating, heated indoor pipes to clean, also with hot air gun on capillary and hot, so hot — refrigeration repeated work several times, using condenser freon high temperature and high pressure, oil gathering of freezing temperatures, better mobility, conducive to force it. Collection of process in such a way as to include indoor pipe freezing oil recovery to the compressor, the air conditioning could not be seen properly, ignore this step.