BMKH0938/O Owners Manual

18
Pipe expanding method
A: Cut the pipe
Note:
Improper pipe expanding is the main cause of refrigerant leakage. Please expand
the pipe according to the following steps:
●
the distance of indoor unit and
outdoor unit.
Cut the required pipe with pipe cutter.
pipe
pipe cutter
leaning
uneven burr
B: Remove the burrs
Remove the burrs with shaper and●
downwards
pipe
prevent the burrs from getting into
the pipe.
shaper
C: Put on suitable insulating pipe
D: Put on the union nut
Remove the union nut on the indoor●
pipe
union pipe
connection pipe and outdoor valve;
install the union nut on the pipe.
E: Expand the port
●
Note:
●
Expand the port with expander.
"A" is different according to the
expander
diameter, please refer to the sheet
below:
hard
mold
pipe
F: Inspection
● Check the quality of expanding port.
the length is equal
improper expanding
surface
If there is any blemish, expand the
port again according to the steps
above.
leaning
damaged
crack uneven
thickness
smooth surface
Outer diameter
(mm)
A(mm)
Max Min
Φ12-12.7(1/2")
Φ6 - 6.35(1/4")
Φ9 - 9.52(3/8")
Φ15.8-16(5/8")
1.3 0.7
1.6 1.0
1.8 1.0
2.4 2.2