Friedrich FPHMR18A3A Service And Parts Manual page 241

Appendix 2: Pipe Expanding Method
A:Cut 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" is di erent according to the diameter, please refer to the sheet below:
Outer diameter(inch)
1/4
3/8
1/2
5/8
F:Inspection
Check the quality of expanding port. If there is any blemish, expand the
port again according to the steps above.
241
APPENDIX
A(inch)
Max Min
2/39 1/36
1/16 1/51
1/14 1/51
5/53 2/23
Pipe
Pipe cutter
Leaning Uneven
Pipe
Shaper
Downwards
Union pipe
Pipe
Hard
mold
Expander
Pipe
Smooth surface
Improper expanding
leaning damaged
surface
The length is equal
Burr
crack uneven
thickness