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TROUBLE DIAGNOSIS
Items
Precautions
6, Gas-leakage
test
7. Pipe arrangement
in each cycle
Evaporator
Compressor
Condenser
Bombe
4) Refrigerant Charging
Charge refrigerant while operating a compressor
as shown above.
5) Pinch a charging pipe with a pinch-oft 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 ptaced in its odginal
place before closing a cover back-M/C
after completion
of work. Particularly
control the size of Joint Drain Pipe
o
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 elec_dc wires from burning
during welding. (In order to prevent insulation
break and accident.)
3) The inner case shall be melted and insulation
matedal (polyurethane)
shall be bumt 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 :_ram.
Drier
Molf_tcular Pipe
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.)
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