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TROUBLE 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
break and accident.)
3) The inner case shall be melted and insulation material (polyurethane) shall be burnt if not cared during welding inner
case parts.
4) The copper pipe shall be oxidized by overheating if not cared during welding.
5) Not allow the aluminum pipes to contact to copper pipes. (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 should not be distorted while cutting a capillary tube.
8) Be sure that a suction pipe and a filling tube should not be substituted 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 take a gas leakage test
on the welded parts.
* Take a leakage test on the welded or suspicious area with an electronic leakage tester.
Check each pipe is placed in its original
place before closing a cover back-M/C
after completion of work. Particularly
control the size of Joint Drain Pipe
Precautions
Evaporator
Drier
Condenser
+3
-0
Drier
Molecular Pipe
+
3
12 mm
-
0
- 77 -
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