Pipe Expanding Method - HTW IX90S-R32C Manual De Usuario E Instalacion

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Pipe expanding method

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.
pipe
leaning
B: Remove the burrs
Remove the burrs with shaper and prevent
the burrs from getting into the pipe.
downwards
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.
union pipe
pipe
pipe cutter
uneven
burr
pipe
shaper
E: Expand the port
Expand the port with expander.
Note:
● "A" is different according to the diameter,
please refer to the sheet below:
Outer diameter(mm)
Φ6 - 6.35(1/4")
Φ9.52(3/8")
Φ12-12.7(1/2")
Φ15.8-16(5/8")
F: Inspection
Check the quality of expanding port.
If there is any blemish, expand the port
again according to the steps above.
smooth
surface
the length is
equal
47
hard
mold
expander
A(mm)
Max
1.3
1.6
1.8
2.4
improper expanding
crack uneven
leaning damaged
surface
pipe
Min
0.7
1.0
1.0
2.2
thickness

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