Panasonic CS-E12JKKW-1 Service Manual page 44

11.2.3.8 Wiring Stripping and connecting requirement
11.2.3.9 Cutting and flaring the piping
1 Please cut using pipe cutter and then remove the burrs.
2 Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping
end down to avoid the metal powder entering the pipe.
3 Please make flare after inserting the flare nut onto the copper pipes.
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