空调压缩机维修1（Air conditioning compressor maintenance 1）.doc

空调压缩机维修1（Air conditioning compressor maintenance 1） 19 cases of air conditioning compressor maintenance Number: 001 Fault type: compressor turns short circuit Machine model: split machine, cabinet machine series Failure phenomenon: the refrigeration effect is not good, the compressor stops. Cause analysis: the machine can run normally but refrigeration effect is poor, two no dirty plugging, check the heat transfer between indoor and outdoor fan speed is normal, the compressor pressure is normal, but the current is large, running for a period of time, the compressor burned, cause the compressor to jump stop, starting when the compressor cant start again, can be judged as compressor turn-to-turn short circuit. Solution: replace the compressor Experience summary: when judging the compressor failure, the peripheral troubleshooting should be taken seriously, such as the wind volume of the fan, the air volume of the fan, the volume of mechanical and electrical capacity, etc. Number: 002 Type of failure: the compressor is slightly in series Machine model: split machine, cabinet machine series Failure phenomenon: the refrigeration effect is not good, the compressor stops. Cause analysis: the machine can run refrigeration effect is poor, but check the heat exchanger without dirty plugging, indoor and outdoor fan speed normal and no short circuit loop, the voltage is normal, and inspiratory pressure on the high side, the current is small, compressor internal slightly mixes up, causing the deterioration of compressor actual output ability. Solution: replace the compressor Experience summary: same case 1 Number: 003 Failure type: compressor is slightly in series Machine model: kfr-75lw/DY - Q Fault phenomenon: poor heating effect Cause analysis: just install new, about the outdoor environment temperature 7 ℃, indoor environment temperature 20 ℃ or so, commissioning deviation found heating effect, the condenser, there is no frost, measure current 10 amp, and the suction temperat