Fujitsu AJ 126LELDH Series Design & Technical Manual page 750

 Removing the pinch pipe
CAUTION
• Remove the pinch pipe only when the internal gas is completely drained as shown on the below
instructions.
• If gas still remains inside, the piping may crack if you melt the brazing filter 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 filler metal on connecting part using a torch and
remove the pinch pipe. (Fig. C)
Fig. A
3-way valves
Pinch pipes
3-1. Piping to outdoor unit
Fig. B
End of pinch pipes
- (06-36) -
Fig. C
3. Piping connection