Piping And Drainage Of Indoor Unit; Preparation Of Piping - Panasonic cs-pa7dkd Service Manual

CS-PA7DKD / CU-PA7DKD / CS-PC7DKD / CU-PC7DKD
9.4.

Piping and Drainage of Indoor Unit

9.4.1.

Preparation of piping

1. Cut the pipes and the cable
Use the accessory piping kit or pipes purchased locally
Measure the distance between the indoor and the
outdoor unit.
Cut the pipes a little longer than the measured distance.
Cut the cable a little longer than the pipe length.
Model
PA7DKD/PC7DKD
PA9DKD/PC9DKD
Pipe cutter
2. Remove burrs
Remove burrs from cut edges of pipes.
Turn the pipe end down to avoid the metal powder
entering the pipe.
Point down
If burrs are not removed, they may cause a gas leakage.
Pipe size
Gas side Liquid side
3/8" 1/4"
Slanted Rough
Fig.8
Pipe
Reamer
Fig.9
Caution
3. Flaring the pipe
Insert the flare nuts, mounted on the connection ports
of both indoor and outdoor unit, onto the copper pipes.
Fit the copper pipe end into the bar of flare tool about
0.5-1.5mm higher.(See Fig.10)
Flare the pipe ends.
Bar
Copper pipe
Clamp handle
4. Tape the flaring portion to protect it from dust or damage.
Improper flaring
Slanted
Surface
Damaged
When properly flared,the internal surface of the
flare will evenly shine and be of even thickness.
Since the flare part come into contact with the
connectors, carefully check the flare finish.
40
Handle
Bar
Yoke
Cone
Fig.10
Cracket Uneven
Thickness
Fig.11