LG GR-K192AF Service Manual - Page 40

Major repair method for freezing cycle Item 5. Charging the refrigerant Caution Evaporator Compressor Drier Bombe Condenser High pressure 3-Way side Valve Hot Line Pipe 4) Charging the refrigerant: As shown above, operate the compressor and charge the refrigerant with the charging pipe. 5) When the charging is complete, pinch the charging pipe using the pinch-off plier. 6) After welding the end of the pinched charging pipe with copper, test for gas leakage on the welding part. 6. Testing for gas leakage Using an electric weight, test for leakage on welded parts and other parts that you think can leak gas out. 7. Arranging cycle piping of each part When the work is done, check whether all pipes are in its original position before closing the cover back-M/C. Especially maintain a distance (10mm) between the pipes so that it does not touch each other. 8-5. Basic principle for major repair 1) Follow the safety principles of handling gas. 2) Use a plate jig (or wet towel), if needed, to prevent any skin burn from wires during welding. (to ensure insulation is not damaged, to prevent safety accidents and to ensure product safety.) 3) Prevent pipe copper pipe oxidization from overheating during welding. 4) When doing the welding, make sure the suction tube does not be mixed with the charging tube. (High efficiency pump) - 40 -