Central air conditioning maintenance common causes and treatment methods

First, the cause of the fault: the refrigerant temperature is too low to jump

Treatment method :1, check the server refrigerant amount is not all normal, is there leakage; 2. Check whether everything is normal in the work of the cold storage temperature conditioner; 3, central air conditioning repair protection and maintenance of air conditioning evaporator wind speed circulation system is not everything normal. Demand relationship: Fault handling within 2 hours after presence (parts in condition)

Second, the cause of the fault: the working pressure of the refrigerant in the cooler is too high to jump the machine

Treatment method: water cooler :① Check whether the working pressure converter of the cooler is normal, and calibrate or replace it if necessary; ② Check whether everything is normal in the work of the water-cooled centrifugal pump; ③ Check whether the copper pipe of the cooler air conditioner is very dirty, and finish the copper pipe of the air conditioner when necessary; ④ Check whether the high voltage circuit breaker is normal. ⑤ Check whether the cooling tower is dirty, and finish the cooling tower when necessary. Demand relationship: If the parts are damaged and there are parts, repair within 2 hours, if the air conditioning copper pipe is very dirty, need to disassemble the air conditioning copper pipe. (About half a day)

Third, the cause of the fault: electrical flow fluctuation

Treatment method :1, check the door motor calibration is not all normal; 2, check the cooling cycle water circulation system is not all normal, if necessary for conditioning; Demand stability: If the central air conditioning repair and maintenance problem is the standard setting problem, it can be dealt with within 1-2 hours, if too much refrigerant oil permeates into the refrigerant, the oil will be extracted from the refrigerant.

Fourth, the cause of the problem: the temperature sensor is faulty

Treatment methods: 1, check each temperature sensor is not all normal, if necessary to replace; 2, check the road is not all normal; Demand relationship: Parts have a 10-hour correction.

Fifth, the cause of the fault: when the compressor motor burns

Treatment method :1, check the compressor motor insulation layer is not to the ground; 2, such as the compressor motor motor burning, need to pump out the compressor refrigerant; 3, discharge the fuselage freezing oil; 4. Disassemble the compressor motor to rewind; 5, the repair motor to carry out heavy device; 6, disassemble the freezing oil, disassemble each filter device, etc. Demand zone :2-3 people need 3-5 days to produce (including the zone around the magnetic coil)

Six, the cause of the problem; Repair servers, transmission gears, rolling bearings, etc. when damaged

Treatment method :1, disassemble each part of the compressor connection; 2, disassemble and reduce the motor motor; 3. Disassemble the compressor transmission box; 4, check the damage level of each central air conditioning repair protection and maintenance parts is not normal, if necessary to replace. 5, assemble the compressor again to restore; 6. Disassemble and replace each refrigerant filter device; 7. Disassemble and replace hydraulic seals at each connection position; 8, reassembly of the compressor recovery (price will have specific content) demand between: under the condition of parts, it will take about 10-15 days