Pipe Expanding Method - Inverter MINI SPLIT Owner's Manual And Installation 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
the distance of indoor unit and
outdoor unit.
pipe
leaning
B: Remove the burrs
prevent the burrs from getting into
the pipe.
downwards
C: Put on suitable insulating pipe
D: Put on the union nut
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
expander
Note:
diameter, please refer to the sheet
below:
Outer diameter
(mm)
F: Inspection
If there is any blemish, expand the
port again according to the steps
above.
smooth surface
the length is equal
42
hard
mold
pipe
A(mm)
Max Min
1.3 0.7
1.6 1.0
1.8 1.0
2.4 2.2
improper expanding
damaged
leaning crack uneven
surface thickness