Panasonic CS-XC9CKT / CU-XC9CKT / CS-XC12CKT / CU-XC12CKT Service Manual ▷ View online
(Gas leakage)
1. Confirm that both the 2-way and 3-way valves are set to
the open position.
2. Connect the charge set to the 3-way valve’s service
port.
•
•
•
• Leave the valve on the charge set closed.
•
•
•
• Connect the charge hose with the push pin to the
service port.
3. Open the valves (Low side) on the charge set and
discharge the refrigerant until the gauge indicates 0.5
to 1 kg/cm
to 1 kg/cm
2
G (0.05 to 0.1 MPa).
•
•
•
• If there is no air in the refrigeration cycle [the pressure
when the air conditioner is not running is higher than 1
kg/cm
kg/cm
2
G (0.1 MPa)], discharge the refrigerant until the
gauge indicates 0.5 to 1 kg/cm
2
G (0.05 to 0.1 MPa). If
this is the case, it will not be necessary to apply a
evacuation.
evacuation.
•
•
•
• Discharge the refrigerant gradually; if it is discharged
too suddenly, the refrigeration oil will be discharged.
11.1.4. Balance refrigerant of the 2-way, 3-way valves
Procedure:
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CS-XC9CKT CU-XC9CKT / CS-XC12CKT CU-XC12CKT
(No refrigerant in the refrigeration cycle)
1. Connect the vacuum pump to the charge set’s centre
hose.
2. Evacuation for approximately one hour.
•
•
•
• Confirm that the gauge needle has moved toward -0.1
MPa (-76 cmHg) [vacuum of 4 mmHg or less.]
3. Close the valve (Low side) on the charge set, turn off
the vacuum pump, and confirm that the gauge needle
does not move (approximately 5 minutes after turning
off the vacuum pump).
does not move (approximately 5 minutes after turning
off the vacuum pump).
4. Disconnect the charge hose from the vacuum pump.
•
•
•
• Vacuum pump oil
If the vacuum pump oil becomes dirty or depleted,
replenish as needed.
replenish as needed.
11.1.5. Evacuation (Installation)
Procedure:
54
CS-XC9CKT CU-XC9CKT / CS-XC12CKT CU-XC12CKT
11.1.6. Gas charging
(After Evacuation)
1. Connect the charge hose to the charging cylinder.
•
•
•
• Connect the charge hose which you disconnected from
the vacuum pump to the valve at the bottom of the
cylinder.
cylinder.
2. Purge the air from the charge hose.
•
•
•
• Open the valve at the bottom of the cylinder and press
the check valve on the charge set to purge the air (be
careful of the liquid refrigerant).
careful of the liquid refrigerant).
3. Open the valve (Low side) on the charge set and charge
the system with liquid refrigerant.
•
•
•
• If the system cannot be charged with the specified
amount of refrigerant, it can be charged with a little at a
time (approximately 150 g each time) while operating
the air conditioner in the cooling cycle; however, one
time is not sufficient, wait approximately 1 minute and
then repeat the procedure. (pumping down-pin)
time (approximately 150 g each time) while operating
the air conditioner in the cooling cycle; however, one
time is not sufficient, wait approximately 1 minute and
then repeat the procedure. (pumping down-pin)
This is different from previous procedures. Because you are
charging with liquid refrigerant from the gas side, absolutely do
not attempt to charge with large amount of liquid refrigerant
while operating the air conditioner.
charging with liquid refrigerant from the gas side, absolutely do
not attempt to charge with large amount of liquid refrigerant
while operating the air conditioner.
4. Immediately disconnect the charge hose from the 3-
way valve’s service port.
•
•
•
• Stopping partway will allow the refrigerant to be
discharged.
•
•
•
• If the system has been charged with liquid refrigerant
while operating the air conditioner, turn off the air
conditioner before disconnecting the hose.
conditioner before disconnecting the hose.
5. Mount the valve stem caps and the service port cap.
•
•
•
• Use torque wrench to tighten the service port cap to a
torque of 18 N.m.
•
•
•
• Be sure to check for gas leakage.
Procedure:
55
CS-XC9CKT CU-XC9CKT / CS-XC12CKT CU-XC12CKT
1. The Electronic Controller, a Signal Receiver and an
Indicator (Fig. 3) can be seen by the below steps:
•
•
•
• Remove the 2 caps and 2 screws at the bottom of the
Front Grille. (Fig. 1)
•
•
•
• Remove the Front Grille by releasing the 2 hooks at the
top of the Front Grille. (Fig. 1)
•
•
•
• Remove the Control Board Cover by releasing the 2
tabs at left, 1 tab on top and 1 tab at right side of the
Control Board Cover. (Fig. 2)
Control Board Cover. (Fig. 2)
2. To remove the Electronic Controller:
•
•
•
• Release the Particular Piece. (Fig. 3)
•
•
•
• Release the hook that hold the Electronic Controller.
(Fig. 3)
•
•
•
• Remove the Control Board by:-
−
−
−
− Releasing CN-REC/DISP connectors. (Fig. 4)
−
−
−
− Releasing CN-FM connectors. (Fig. 4)
−
−
−
− Releasing CN-ION connector. (Fig. 4)
−
−
−
− Releasing CN-STM connector. (Fig. 4)
−
−
−
− Removing the Earth Wire screw. (Fig. 4)
−
−
−
− Releasing the Intake Air Sensor. (Fig. 4)
−
−
−
− Releasing the Piping Sensor. (Fig. 4)
Fig. 1
Fig. 2
Fig. 3
Fig. 4
12 Servicing Information
Caution:
•
•
•
• Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please use
a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
•
•
•
• Pb free solder will tend to splash when heated too high (about 1100° F/600°C).
12.1. Indoor Unit
12.1.1. Indoor Electronic Controllers Removal Procedures
12.1.2. Indoor Fan Motor and Cross Flow Fan Removal Procedures
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CS-XC9CKT CU-XC9CKT / CS-XC12CKT CU-XC12CKT
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