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Connecting Copper Pipes
Plumbing materials and storage methods
Pipe must be able to obtain the specified thickness and should be used with low impurities.
Also when handling storage, pipe must be careful to prevent a fracture, deformity and wound.
Should not be mixed with contaminations such as dust, moisture.
Refrigerant piping on three principles
Should be no moisture inside
Items
- Significant hydrolysis of
refrigerant oil
- Degradation of refrigerant oil
Cause failure
- Poor insulation of the
compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- No moisture in the pipe
- Until the connection is
completed, the plumbing pipe
entrance should be strictly
controlled.
- Stop plumbing at rainy day.
- Pipe entrance should be taken
Countermeasure
side or bottom.
- When removal burr after cutting
pipe, pipe entrance should be
taken down.
- Pipe entrance should be fitted
cap when pass through the
walls.
12
Drying
Moisture
- Degradation of refrigerant oil
- Poor insulation of the
compressor
- Do not cold and warm
- Clogging of EEV, Capillary
- No dust in the pipe.
- Until the connection is
completed, the plumbing pipe
entrance should be strictly
controlled.
- Pipe entrance should be taken
side or bottom.
- When removal burr after cutting
pipe, pipe entrance should be
taken down.
- Pipe entrance should be fitted
cap when pass through the
walls.
Cleanliness
No dust inside.
Dust
Airtight
There is no refrigerant leakage
Leakage
- Gas shortages
- Degradation of refrigerant oil
- Poor insulation of the
compressor
- Do not cold and warm
- Airtightness test should be.
- Brazing operations to comply
with standards.
- Flare to comply with standards.
- Flange connections to comply
with standards.
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