Fujitsu AIRSTAGE J-III L AJ 072LELAH Series Design & Technical Manual page 720

„ REMOVING THE PINCH PIPE
„
● Remove the pinch pipe only when the internal gas is completely drained.
● If gas still remains inside, the piping may crack if you melt the brazing filler metal of the junction
area with a burner.
Before connecting the piping, remove the pinch pipe in accordance with the following instructions:
1) Verify that the liquid side and gas side 3-way valves are closed. (Fig. A)
2) Cut the end of the liquid side and gas side pinch pipe and vent the gas inside the pinch pipe.
(Fig. B)
3) After all the gas is vented, melt the brazing filter metal on connecting part using a burner and
remove the pinch pipe. (Fig. C)
Fig.A
3-way valves
Pinch pipes
WARNING
Fig.B
End of pinch pipes
- (06 - 29) -
Fig.C