Pipe Expanding Method - Gree GWC30LB-D3DNA3G 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
the distance of indoor unit and
outdoor unit.
pipe
leaning
B: Remove the burrs
prevent the burrs from getting into
the pipe.
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
E: Expand the port
r.
pipe cutter
Note:
uneven burr
shaper
F: Inspection
37
expander
fferent according to the
diameter, please refer to the sheet
below:
Outer diameter
(mm)
Max
port again according to the steps
above.
smooth surface
improper expanding
leaning damaged
surface
l
r.
hard
mold
pipe
A(mm)
Min
0.7
crack uneven
thickness