Pipe Expanding Method - Whirlpool ASV09000R Installation Manual

Pipe expanding method

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
● Confirm 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
44
4
hard
mold
expander
A(mm)
Max
1.3
1.6
1.8
2.4
improper expanding
leaning damaged crack
surface
pipe
Min
0.7
1.0
1.0
2.2
uneven
thickness