Pipe Expanding Method - Mirage IAEH121A Owner's Manual

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.
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.
expander
Note:
• "A" is different according to
the diameter, please refer to the
sheet below:
Outer diameter
1/4"
3/8"
1/2"
5/8"
F: Inspection
• Check the quality of expand-
ing port. If there is any blemish,
expand the port again according
to the steps above.
smooth surface
improper expanding
leaning
the length is equal
hard
mold
pipe
A(mm)
Max Min
0.051'' 0.027''
0.062'' 0.039''
0.070'' 0.039''
0.094'' 0.086''
damaged crack uneven
surface thickness
39