Refrigerant Charging; Leak Inspection And Cycle Check - LG GR-P247C Service Manual

Heavy Repair Method of Refrigerator by Application of Refrigerant

2-6. Refrigerant Charging

Required equipment: Bombe, R600a refrigerant (75g)
• Firstly remove fire appliances and heating source for performing work when charging scaled refrigerant. (Do not spray
refrigerant indoor.)
• Measure the accurate quantity (75g) of refrigerant to charge it into a Bombe.
• Make the Bomber as vacuum status to charge refrigerant.
(If there is air or moisture in a Bombe, it may give effect on performance of a cooling cycle.)
• Please manage refrigerant quantity as 75g±1. Differently from R134a, R600a gives much effect on cooling performance
depending on change of refrigerant quantity.
Refrigerant quantity = Weight after charging – Weight before charging (weight of vacuumed Bombe)
• Connect Bombe with a charging tube to charge refrigerant.
• Turn on power of refrigerator to operate a compressor.
• Measure Bombe weight after 5 through 10 minutes to check remained refrigerant quantity to complete charging of
refrigerant.
(After charging refrigerant, never perform welding work or work using fire appliances.)

2-7. Leak Inspection and Cycle Check

Required equipment: Leakage checking machine (foam and leakage inspection machine)
• Check for leakage by using form or a leakage inspection machine at the worked part if charging of refrigerant is
completed.
• Check for leakage at the low pressure part with the compressor stopped, and check at the high pressure part with the
compressor being operating.
• If leakage is detected, proceed to repair according to repair process again starting from "2-1. Returnof Refrigerator
Refrigerant".
(Never perform welding work or work using fire appliances.)
• Check that heat remains at a discharge pipe or condenser with the hands if leakage check is completed. If heat remains,
the cooling cycle is normal.
(Take care since a discharge pipe may be hot.)
Charging Tube
Suction Pipe
Discharge Pipe
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