28
Pipe expanding method
Note:
Improper pipe expanding is the main cause of refrigerant leakage. Please expand
the pipe according to the following steps:
A: Cut the pipe
the distance of indoor unit and
outdoor unit.
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r.
pipe
pipe cutter
leaning
uneven
burr
B: Remove the burrs
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prevent the burrs from getting into
the pipe.
downwards
pipe
shaper
C: Put on suitable insulating pipe
D: Put on the union nut
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connection pipe and outdoor valve;
install the union nut on the pipe.
union pipe
pipe
E: Expand the port
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r.
Note:
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fferent according to the
diameter, please refer to the sheet
below:
expander
hard
mold
pipe
F: Inspection
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port again according to the steps
above.
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l
improper expanding
leaning
damaged
surface
crack
uneven
thickness
smooth surface
Outer diameter
(mm)
A(mm)
Max
Min
ĭ
ĭ
ĭ
ĭ
2.2
