Troubleshooting Method Of Air Conditioning Compressor

- Mar 29, 2018 -

1. The wood hammer knocking method for the failure maintenance of air conditioning compressor:

Tilt the front, rear, left and right sides of the air conditioner 45 degrees, then turn on the machine and knock the lower part of the air conditioner compressor with wooden hammers, so that the internal parts of the air-conditioner are vibrated by the card parts. The newly installed air conditioner has no starting fault of the air conditioner compressor, and the most possible air conditioner is placed for a long time, so that the piston assembly is still in a state for a long time. In addition, the viscosity of the frozen oil in winter is also a reason, the use of wood hammer knocking can eliminate the failure.

Two, air pressure shock method for the failure maintenance of air conditioning compressor:

The voltage of the socket is normal, the outdoor housing is disassembled, the capacitance and discharge of the compressor is good, and the overheat and overcurrent protector is good. The main windings of the air conditioning compressor and the auxiliary winding resistance are equal to the common end value. The 4 methods mentioned above do not work, and the pressure shock method is adopted at the end. We need to let go of the refrigerant gas welding, the air conditioning compressor high pressure and low pressure pipe welding, the copper pipe of a long 1.5 meters in diameter 10mm of a head of welding in the air conditioning compressor high pressure outlet pipe. The other one is connected to the nitrogen outlet of the gas cylinder, and the nitrogen nut is applied to a 0.1MPa reaction force of the internal parts of the air-conditioning compressor to make the axle holding machine loose. Out of air at low pressure suction port for 5 minutes, and then test the machine with the method of strong lifting.  The air conditioner compressor is easy to start and run. After the operation of the air conditioner compressor is normal, the measuring current is 4.3. Then, the high-pressure and low pressure pipes are re welded, and the final pressure, leak detection, evacuation, fluorine and air conditioning compressor return to normal.

Three. The lubrication method for the failure maintenance of air conditioning compressor:

Outdoor machine shell, measuring parameters, using the above 5 methods are not working, finally had to remove the air conditioning compressor, air conditioning compressor oil poured out of black and red, and then from the air conditioning compressor high pressure and low pressure suction outlet, respectively with kerosene, and then poured out, repeated 4 times, the purpose is to the air conditioning compressor off in the varnish and copper oxide skin cleaning, air conditioning compressor with kerosene after cleaning, then the air conditioning compressor upside down for 12 hours, the residue in the air conditioning compressor control and kerosene, kerosene to evaporate, then add 25 frozen oil, can add a bit more, after adding oil the air conditioning compressor, hold to the hard ground pier 2-3, the air conditioning compressor axle by vibration, help start. Then the capacitor starting method connect the air conditioning compressor three terminal line, air conditioning compressor easy starting operation, so the air conditioning compressor running 1 hours, the excess air conditioning compressor oil discharge, and the water in the air conditioning compressor for air conditioning compressor self heat evaporation, with the current meter measured current of 4.4a, the re installation of air-conditioning compressor good, good high and low pressure welding welding, pressure test, leak detection, evacuation, fluoride, air-conditioning compressor recovery.

Four. The pressure relief method for the failure maintenance of air conditioning compressor:

The winding resistance of the air conditioner compressor is normal. With the above three methods, the air conditioning compressor is still unable to work. Finally, the refrigerant is released from the low pressure gas inlet of the outdoor unit, then the engine is started and the water hammer is used to knock the lower part of the air-conditioner compressor, and the air conditioning compressor runs quickly. Then from the low pressure gas fluoride at inhalation of 200 ml oil, air conditioning compressor normal operation, good gas valve into the nano, and low pressure liquid valve end pressure, leakage test, evacuation, fluoride, air-conditioning compressor recovery.

Five, air conditioning compressor failure maintenance method:

Use a 220v10a plug. Three the root length of 1.5 meters, 1.5 square mm wire to make a boot tool section, the N terminal is connected with the air conditioner compressor plug line public terminal C, L diode end plug line, a M terminal around the air conditioning compressor, another thread is suspended, when the air conditioning compressor is energized by the line is empty gently touch the compressor start terminal S, air conditioning compressor will start. When the air conditioner compressor is started, the line of touch is removed quickly, and it is safe to pay attention to. When the operation is stopped, the power plug is dialed first, then the wire is disassembled, then the air conditioner compressor line is connected. The air conditioner of the test machine is restored to normal.

Six, the capacitor starting method for the failure maintenance of air conditioning compressor:

Measurement of the power supply is normal, open the outdoor machine shell, measuring air compressor starting capacitor, the charge discharge test is good, the air conditioning compressor three terminals, the main winding M plus secondary winding of S resistance is approximately equal to the common end resistance C, using wood hammer percussion method and dynamic method are not working, finally by increasing the capacitance starting method, air conditioning compressor easy to start. The capacitance starting method is a 70 mu F capacitor in the pole line of the S terminal on the basis of the strong lifting method. The starting torque of the compressor can be increased by 5%. But after the air conditioning compressor start, the operation time should not be too long, because the air conditioning compressor start to increase the capacity, air conditioning compressor will be overheated. The start coil is easy to burn down.

The above method can also be used to repair the non starting fault of the refrigerator compressor.


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