five
Look at the frosting of the air conditioning copper pipe, and then release the R22 in the air conditioning system, cut the refrigeration system, the nitrogen into the system, use the pressure of nitrogen, the stolen goods of the refrigeration system out, into the drying box, and then, use welding to seal the system, pay special attention to the sealing system, be sure to be fast, do not let too much air into the air, because the air with good water vapor in it. No, the dirty plug is repaired, the ice block is coming again, it is not often lost, after welding, to let the copper pipe cool naturally, do not use cold water, or other things to cool, so that after cooling, the inner wall of the copper pipe will produce oxide skin, fall in the system.
two
\/ 5
The system is sealed with nitrogen, full pressure for 24 hours, if the pressure is dropped, the refrigeration system is not sealed, need to repair welding.
three
\/ 5
The refrigeration system that does not drop pressure is connected to the vacuum pump and vacuumed. The vacuum degree of the general system is -2PA.
four
\/ 5
Flush into R22, pay attention to be sure to boot on the cooling position, how much refrigeration is the most added! To see your ammeter, as well as your pressure gauge, can reach your air conditioning technical indicators, for the best.
five
\/ 5
Reinstall the air conditioner, run for 5 minutes, see if the system is running well without bad sound, if not, for the repair is complete.
1. When the drainage pipe is blocked, the biggest possible cause of failure is the electric valve and filter at the front end of the water inlet, and the other parts are less likely to be dirty and blocked; If there is blockage in the middle of the coil, it can be solved by air conditioning water recoil or high pressure water recoil. If it doesn't work, you have to weld the elbow through the gun to solve it.
2. When the central air conditioning drain pipe is blocked in the filter and the electric valve, the filter and the electric valve should be removed to solve the problem; Because the internal hole of the electric valve is small, and some pipe holes have a filter screen, it is easy to cause blockage, especially when there is no filter at the front end of the water inlet.