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Notice for Project Installation
● Pipe Installation
Pipe installation of refrigerants is very important. Keep inner pipe dry, clean and sealed.
Three important points for pipe installation of refrigerants
Dry Clean Sealed
No water in pipe No impurities in pipe No leakage in pipe
Illustration
impurities
leakage
Cause
Water like rainwater enters into ◆
the pipe
Condensate in pipes◆
Oxyde results from braze ◆
welding.
Impurities like dirtiness, oil stain ◆
in pipes.
Braze welding is not firm.◆
Improper treatment to bell mouth ◆
or incorrect force moment.
Sign
Blocka◆ ge of expansion valve or
capillary.
No cold air or hot air ◆
Lube oil is aging◆
Malfunction of compressor◆
Blockage of expansion valve or ◆
capillary.
No cold air or hot air ◆
Lube oil is aging◆
Malfunction of compressor◆
Poor refrigerant ◆
No col◆ d air or hot air
Exhaust temperature gets ◆
increased
Lube oil is aging◆
Malfunction of compressor◆
Precaution
The same to the left ◆
Never use the equipment which ◆
has used other kind of refrigerants.
Conform to basic operation ◆
instruction to braze welding
Conform to basic operation ◆
instruction to treatment to bell
mouth
Conform to basic operation ◆
instruction to flange connection
Pressure maintaining and leak ◆
detection
Maintaining pipes
Washing
Vacuum drin
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