Pipe Expanding Method - Carrier 40GJB 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
26
expander
fferent according to the
diameter, please refer to the sheet
below:
Outer diameter
1/20 in (1.3 mm) 0.02 in (0.7 mm)
3/50 in (1.6 mm)
0.07 in (1.8 mm)
1/10 in (2.4 mm)
port again according to the steps
above.
smooth surface
improper expanding
leaning damaged
surface
l
r.
hard
mold
pipe
A
Max Min
1/24 in (1 mm)
1/24 in (1 mm)
2/25 in (2.2 mm)
crack uneven
thickness