18
English
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
●
Confirm the pipe length according to
the distance of indoor unit and
outdoor unit.
●
Cut the required pipe with pipe cutter.
B: Remove the burrs
●
Remove the burrs with shaper and
prevent the burrs from getting into
the pipe.
C: Put on suitable insulating pipe
D: Put on the union nut
●
Remove the union nut on the indoor
connection pipe and outdoor valve;
install the union nut on the pipe.
pipe cutter
pipe
leaning
uneven
burr
pipe
shaper
downwards
union pipe
pipe
E: Expand the port
●
Expand the port with expander.
Note:
●
"A" is different according to the
diameter, please refer to the sheet
below:
F: Inspection
●
Check the quality of expanding port.
If there is any blemish, expand the
port again according to the steps
above.
Outer diameter
(mm)
A(mm)
Max
Min
Ø6 - 6.35(1/4")
1.3
0.7
Ø9.52(3/8")
1.6
1.0
Ø12 - 12.7(1/2")
1.8
1.0
Ø15.8 - 16(5/8")
2.4
2.2
expander
hard
mold
pipe
smooth surface
the length is equal
improper expanding
leaning
damaged
surface
crack
uneven
thickness
Содержание R410A Split Series
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