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PROBLEM DIAGNOSIS
Items
6. Gas-leakage test
7. Pipe arrangement
in each cycle
3-5. Standard Regulations For Heavy Repair
1) Observe the safety precautions for gas handling.
2) Use JIG (or wet towel) in order to prevent electric wires from burning during welding. (In order to prevent insulation
damage and consequent accidents.)
3) The inner case shall will melt and the insulation material (polyurethane) shall be damaged if care is not taken during
welding of inner case parts.
4) The copper piping wil oxidize from overheating if care is not taken during welding.
5) Do not allow aluminum and copper pipes to touch. (In order to prevent corrosion.)
6) Observe that the inserted length of a capillary tube into a drier should be 12 mm.
Molecular
Sieves
7) Make sure that the inner diameter is not be distorted while cutting a capillary tube.
8) Be sure that a suction pipe and a filling tube are not be substituted for each other during welding. ( High efficiency
pump.)
Compressor
Bombe
4) Refrigerant Charging
Charge refrigerant while operating a compressor as shown above.
5) Pinch a charging pipe with a pinch-off plier after completion of charging.
6) Braze the end of a pinched charging pipe with copper brazer and perform a gas leakage
test on the welded parts.
* Take for leaks on the welded or suspicious area with an electronic leakage tester.
Verify that each pipe is placed in its
original location before closing a cover
after completion of work. Particularly
check the size of Joint Drain Pipe
Precautions
Condenser
+3
-0
Drier
Molecular Pipe
+
3
12 mm
-
0
- 85 -
Evaporator
Drier
Bushing
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