GREE ELECTRIC GMV(L)-Pd100W/NaB-K, Service Manual

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DC INVERTER MULTI VRF INSTALLATION
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Pipe bending
Work Methods:
◆
a) Bend by hand ………………………..Suitable to fine copper pipe (
φ
6.35mm-
φ
12.7mm).
b) Machining with spring pipe bender …….. Bend by inserting the spring into copper pipe or
sheathing onto the copper pipe (
φ
6.35mm-
φ
22.2mm).
c) Machining with hand-operated pipe bender……Use the pipe bender of suitable dimension
(
φ
6.35mm-
φ
22.2mm).
d) Machining with electric pipe bender (hydraulic)……Suitable for mass machining of fine and
coarse fitting pipes (
φ
6.35mm-
φ
69.9mm).
Advantages
Decrease the weld joint, thus reduce the possibility of leakage and oxidization.
For example:
It can decrease the weld by 8 spots. Please act now to improve the quality.
No joint is required, which will save the material costs. Reduced waste of fitting pipe materials.
※
Reduced resistance in the fitting pipe. The bending radius higher than the pipe joint.
※
◆
CAUTIONS
During bending, there shall
※
be no wrinkling or deformation on the inner side of the copper pipe.
※
Spring pipe bend
The bender inserted into the copper pipe must be cleaned.
※
Do not bend over 90º. (Otherwise, wrinkling may be formed on the inner side of copper pipe
※
and in the future, the copper pipe will be broken from this position.)
Too much eliminated
The contact face
becomes small
Flared nut