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Heavy Repair Method of Refrigerator by Application of Refrigerant
2-6. Refrigerant Charging
Required equipment: Bombe, R600a refrigerant (80g)
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Firstly remove fire appliances and heating source for performing work when charging scaled refrigerant. (Do not spray refrigerant
indoor.)
Measure the accurate quantity (80g) of refrigerant to charge it into a Bombe.
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Make the Bomber as vacuum status to charge refrigerant.
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(If there is air or moisture in a Bombe, it may give effect on performance of a cooling cycle.)
Please manage refrigerant quantity as 80g±1. Differently from R134a, R600a gives much effect on
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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.
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Turn on power of refrigerator to operate a compressor.
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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.
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Check for leakage at the low pressure part with the compressor stopped, and check at the high pressure part with the compressor
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being operating.
If leakage is detected, proceed to repair according to repair process again starting from "2-1. Returnof Refrigerator Refrigerant".
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(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
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cooling cycle is normal.
(Take care since a discharge pipe may be hot.)
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