Panasonic CS-PS9JKT, Service Manual

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10.3.3 Evacuation of the equipment
When installing an air conditioner, be sure to evacuate the air inside the indoor unit and pipes in the following
procedures.
Lo Hi
OPEN
CLOSE
Gas side
Liquid side
Outdoor unit
Two-way valve
Three-way valve
Indoor unit
Vacuum
pump
Close
Close
1 Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way
valve.
o
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.
3 Turn on the power switch of the vacuum pump and make sure that the needle in the gauge moves from
0cmHg (0 Mpa) to -76cmHg (-0.1Mpa). Then evacuate the air approximately ten minutes.
4 Close the Low side valve of the charging set and turn off the vacuum pump. Make sure the needle in the
gauge does not move after approximately five minutes.
Note: BE SURE TO TAKE THIS PROCEDURE IN ORDER TO AVOID REFRIGERANT GAS LEAKAGE.
5 Disconnect the charging hose from the 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 18N
y m with a torque wrench.
7 Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “OPEN”
using a hexagonal wrench (4mm).
8 Mount valve caps onto the 2-way valve and the 3-way valve.
o
Be sure to check for gas leakage.
Caution
•
If gauge needle does not move from 0cmHg (0Mpa) to -76cmHg (-0.1Mpa), in step 3 above take the following
measure:
•
If the leak stops when the piping connections are tightened further, continue working from step 3.
•
If the leak does not stop when the connections are retightened, repair location of leak.
•
Do not release refrigerant during piping work for installation and reinstallation. Take care of the liquid refrigerant,
it may cause frostbite.
10.3.4 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 x 1.5mm
2
(1.0 ~ 1.75HP) or 4 x
2.5mm
2
(2.0 ~ 2.5HP) flexible cord, type designation 245 IEC 57 or
heavier cord.
Terminals on the outdoor unit 1 2 3
Colour of wires
Terminals on the indoor unit 1 2 3
3 Secure the cable onto the control board with the holder (clamper).
4 Attach the control board cover back to the original position with screw.
5 For wire stripping and connection requirement, refer to instructions 5 of
indoor unit.
10.3.5 Piping insulation
1 Please carry insulation at piping 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 6mm or above.
1 2 3
Earth Wire
longer than
others AC
wires for
safety reason
Terminal
Board
Holder
Indoor andoutdoor
cable connection
Indoor Unit
This equipment must be
properly earthed.