Freezer Model:FHV5SGWW/FHV7SGWW31MAINTENANCE SERVICE AND TROUBLE SHOOTINGMaintenance Service and Trouble Shooting12.3.3 Service procedure(1) Operation method of repairing equipment (please see instructionmanual).(2) Special requirements① The time interval from opening of compressor to the beginning ofevacuation can not exceed 10 minutes.② The evacuation time shall not be less than 45 min.③ In case there is leakage of freezer, if leakage occurs at high-pressure end,it is repairable. Please blow high purity N2 before welding. If leakageoccurs at low-pressure end, Check system pressure, if the system hasno pressure, the freezer has to be scrapped and change with new one, ifthere is pressure, it is repairable.12.3.4 Changing procedure of R134a compressor(1) Switch power off:Open the protection cover by using cross screwdriveror universal(2) Screwdriver.(3) Remove electrical parts of compressor.PDF created with pdfFactory trial version www.pdffactory.com