Pipe Expanding Method; Cut The Pipe; Remove The Burrs; Put On The Union Nut - Tadiran Telecom SMVH09A-2A1B1NA Service Manual

7.6 Pipe expanding method

Improper pipe expanding is the main cause of refrigerant leakage. Please expand the pipe according to the following steps:
A: Cut the pipe
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.
F: Inspection
Check the quality of expanding port.
If there is any blemish, expand the port again according to the steps above.
pipe
leaning
downwards
union pipe
pipe
hard
mold
expander
pipe
smooth
surface
the length is equal
pipe cutter
uneven burr
pipe
shaper
Note:
"A" is different according to the diameter, please refer to the sheet below:
Outer diameter(mm)
Ф6 - 6.35(1/4")
Ф9.52(3/8")
Ф12-12.7(1/2")
Ф15.8-16(5/8")
improper expanding
damaged uneven
leaning crack
thickness
surface
Installation Manual
A(mm)
Max Min
1.3 0.7
1.6 1.0
1.8 1.0
2.4 2.2
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