Appendix 3: Pipe Expanding Method - Gree GWH24YE-S6DBA2A/I Service Manual

Service Manual

Appendix 3: Pipe Expanding Method

/ j \ Note:
Im p ro p e r p ip e e x p a n d in g is th e m a in c a u s e o f re frig e ra n t le a k a g e .P le a s e
expan d th e pip e a c c o rd in g to th e fo llo w in g ste p s:
A :C ut 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 Note:
• "A" is different according to the diameter, please refer to the sheet below:
Outer diameter(mm)
0 6 - 6.35 (1/4")
09 .5 2 (3/8")
0 1 2 - 12.70 (1/2")
0 1 6 - 15.88 (5/8")
F:Inspection
• Check the quality of expanding port. If there is any blemish, expand the
port again according to the steps above.
Installation and Maintenance
A(mm )
Max Min
1.3 0.7
1.6 1.0
1.8 1.0
2.4 2.2
%
Pipe
Pipe cutter
X X
V
90"
Leaning Uneven
m m
CL
\ /
LU
P ip e
S h a p e r
D o w n w a r d s
Union pipe
Pipe
Smooth surface
Improper expanding
The length is equal
E
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