Service Manual MM09YJ-MM12YJ

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Installation and Maintenance
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F:Inspection
● Check the quality of expanding port. If there is any blemish, expand the
port again according to the steps above.
The len
g
th is e
q
ual
Improper expanding
leaning
damaged
surface
crack uneven
thickness
Smooth surface
Downwards
Pipe
Shaper
Union pipe
Pipe
Expander
Hard
mold
Pipe
Pipe
Pipe cutter
Leaning Uneven Burr
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A:Cut the pip
● 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.
E:Expand the port
● Expand the port with expander.
● "A" is different according to the diameter, please refer to the sheet below:
Outer diameter(inch)
A(inch)
Max Min
Ф1/4 2/39 1/36
Ф3/8 1/16 1/51
Ф1/2 1/14 1/51
Ф5/8 5/53 2/23
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