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4
Storage of Piping Materials
[1] Storage Location
NO
NO
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OK
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OK
Store the pipes to be used indoors (i.e. warehouse).
Storing them outdoors may cause dirt, waste, or water to infiltrate.
[2] Pipe sealing before storage
Both ends of the pipes should be sealed until immediately before brazing.
Wrap elbows and T’s in plastic for storage.
✻
The new refrigerator oil is ten times more hygroscopic than conventional refrigerator oils (such as Suniso).
Water infiltration in the refrigerant circuit will deteriorate the oil or cause a compressor failure. Exercise more
caution when handling piping materials for R407C air conditioners than you would when handling piping
materials for conventional units.
