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)
Major repair method for freezing cycle
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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.
Using an electric weight, test for leakage on welded parts and other parts that you think
can leak gas out.
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.
5. Charging the refrigerant
6. Testing for gas leakage
7. Arranging cycle piping of
each part
Item
Caution
3-Way
Valve
Condenser
Hot Line Pipe
Evaporator
Compressor
Bombe
High pressure
side
Drier
