Haier BD-478A service manual Changing procedure of R134a compressor

(1)Operation method of repairing equipment (please see instruction manual).

(2)Special requirements

①The time interval from opening of compressor to the beginning of evacuation can not exceed 10 minutes.

②The evacuation time shall not be less than 45 min.

③In case there is leakage of freezer, if leakage occurs at high-pressure end, it is repairable. Please blow high purity N2 before welding. If leakage occurs at low-pressure end, Check system pressure, if the system has no pressure, the freezer has to be scrapped and change with new one, if there is pressure, it is repairable.

12.3.4 Changing procedure of R134a compressor

(1)Switch power off：Open the protection cover by using cross screwdriver or universal

(2)Screwdriver.

(3)Remove electrical parts of compressor.

MAINTENANCE SERVICE AND TROUBLE SHOOTING Maintenance Service and Trouble Shooting

(4) Remove the four mounting bolts of compressor by using fork wrench or

universal tool.

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