Panasonic CS-HE9DKE, Service Manual, Page: 53 / 88

11.3.5. Connect The Cable To The
Outdoor Unit
1. Remove the control board cover from the unit by loosening
the screw.
2. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 4 × 1.5 mm
2
flexible cord, type designation 245 IEC 57 (H05RN-F) or
heavier cord.
3. Secure the cable onto the control board with the holder
(clamper).
4. Attach the control board cover back to the original position
with the screw.
11.3.6. Pipe Insulation
1. Please carry out insulation at pipe connection portion as
mentioned in Indoor/Outdoor Unit Installation Diagram.
Please wrap the insulated piping end to prevent water from
going inside the piping.
2. If drain hose or connecting piping is in the room (where dew
may form), please increase the insulation by using POLY-E
FOAM with thickness 6 mm or above.
FOR 2 SETS IN ONE ROOM
A switching mechanism to prevent errors occurring in the
operation of one of the air conditioners caused by operating the
buttons on the remote controller for the other air conditioner is
provided. This mechanism was set to “A” at the factory.
Set the other air conditioner and its remote controller to “B”.
• • • •
Set the remote controller to “B”.
Open the remote controller’s battery cover, and cut the
jumper using a pair of pliers.
• • • •
Set the air conditioner to “B”.
1. Hold down the air conditioner’s emergency operation
button for at least 11 seconds, and release it after three
beeps are heard.
(Note: One beep is heard after the button has been held
down for 5 seconds, and two beeps are heard after 8
seconds.)
1. Connect a charging hose with a push pin to the Low and High side of a charging set and the service port of the 3-way valve.
•
• •
•
Be sure to connect the end of the charging hose with the push pin to the service port.
2. Connect the center hose of the charging set to a vacuum pump with check valve, or vacuum pump and vacuum pump adaptor.
3. Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves form 0 cmHg (0 MPa) to -
76cm Hg (-0.1 MPa). Then evacuate the air approximately 15 minutes.
4. Close the Low side valve of the charging set the turn off the vacuum pump. Make sure that the needle in the gauge does not
move after approximately 5 minutes.
Note: BE SURE TO FOLLOW THIS PROCEDURE INORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5. Disconnect the charging hose from vacuum pump and from the service port of the 3-way valve.
6. Tighten the service port caps of the 3-way valve at a torque of 18 N.m with a torque wrench.
7. Remove the valve caps of both of the 3-way valve. Position both of the valves to “OPEN” using a hexagonal wrench (4 mm).
8. Mount valve caps onto the 2-way valve and the 3-way valve.
•
• •
•
Be sure to check for gas leakage.
Caution
• • • •
If gauge needle does not move from 0 cmHg (0 MPa) to -76 cmHg (-0.1 MPa), in step 3 above take the following measure:
•
• •
•
If the leak stops when the piping connections are tightened further, continue working form step 3.
• • • •
If the leak does not stop when the connections are retightened, repair the location of leak.
•
• •
•
Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant, it may cause
frostbite.
53
CS-HE9DKE CU-HE9DKE / CS-HE12DKE CU-HE12DKE