Panasonic Cs A7dkd Cs A9dkd Cs A12dkd Repair Manual

 2. Set the vertical airflow direction louver to the horizontal
position.
 3. Slide down the 2 caps on the front grille as shown in the
illustration at right, and then remove the 2 mounting screws.
 4. Pull the lower section of the front grille towards you to
remove the front grille.
When reinstalling the front grille, first set the vertical
airflow direction louver to the horizontal position and
then carry out above steps 2 -3 in the reverse order.
AUTO SWITCH OPERATION
The below operations will be...

MODELPiping size (Torque)
GasLiquid
C7DK, C9DK, A7DK, A9DK3/8” (42 N.m)1/4” (18 N.m)
C12DK, A12DK1/2” (55 N.m)1/4” (18 N.m)
Connecting The Piping To Outdoor Unit
Decide piping length and then cut by using pipe cutter. Remove
burrs from cut edge. Make flare after inserting the flare nut
(located at valve) onto the copper pipe.
Align center of piping to valves and then tighten with torque
wrench to the specified torque as stated in the table.
CUTTING AND FLARING THE PIPING
 1. Please cut using pipe cutter...

10.6.4. EVACUATION OF THE EQUIPMENT
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND PIPES in the
following procedure.
 1. Connect a charging hose with a push pin to the Low andHigh side of a charging set andthe service port ofthe 3-wayvalve.
 • Be sure to connect the end of the charginghose 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...

DISPOSAL OFOUTDOOR UNITDRAIN WATER
 • If the drain elbow is used, the unit should be placed on a
stand which is taller than 3cm.
 • If the unit is used in an area where temperature falls below
0° C for 2 or 3 days in succession, it is recommended not to
use a drain elbow, for the drain water freezes and the fan
will not rotate.
CHECK THEDRAINAGE
 • Open front panel and remove air filters.
(Drainage checking can be carriedout without removing the
front grille.)
 • Pour a glass of water into the drain...

CHECK ITEMS
Is there any gas leakage at flare nut connections?
Has the heat insulation been carried out at flare nut
connection?
Is the connecting cable being fixed to terminal board firmly?
Is the connecting cable being clamped firmly?
Is the drainage OK?
(Refer to “Check the drainage” section)
Is the earth wire connection properly done?
Is the indoor unit properly hooked to the installation plate?
Is the power supplyvoltage complied with rated value?
Is there any abnormal sound?
Is the cooling...

11 2-way, 3-way Valve
2-way Valve (Liquid Side)3-way Valve (Gas Side)
WorksShaft PositionShaft PositionService Port
ShippingCloseCloseClose
(With valve cap)(With valve cap)(With cap)
EvacuationCloseCloseOpen
(Installation and(Counter-Clockwise)(Clockwise)(Push-pin)
Re-installation)
OperationOpenOpenClose
(With valve cap)(With valve cap)(With cap)
Pumping downCloseOpenOpen
(Transferring)(Clockwise)(Counter-Clockwise)(Connected manifo ld
gauge)
EvacuationOpenOpenOpen
(Servicing)With vacuumpump
Gas...

Required tools: hexagonal wrench, adjustable wrench, torque
wrenches, wrench to hold the joints and gas leak detector.
The additional gas for air purging has been charged in the
outdoor unit.
However, if the flare connections have not been done correctly
and there gas leaks, a gas cylinder and the charge set will be
needed.
 1. Recheck the piping connections.
 2. Open thevalve stemof the2-wayvalvecounter-
clockwise approximately 90°, wait 10 seconds, and
then set it to closed position.
 • Be sure to use...

 1. Confirm that both the 2-way and 3-wayvalves are set to
the opened position.
 • Remove the valve stem caps and confirm that the valve
stems are in the opened position.
 • Be sure to use a hexagonal wrench to operate the valve
stems.
 2. Operate the unit for 10 to 15 minutes.
 3. Stop operation and wait for 3 minutes, then connect the
charge set to the service port of the 3-wayvalve.
 • Connect the charge hose with the push pin to the Gas
service port.
 4. Air purging of the charge hose.
 • Open the...

11.1.3. Re-air purging (Re-installation)
 1. Confirm that both the 2-way and 3-wayvalves are set to
the closed position.
 2. Connect the charge set and a charging cylinder to the
service port of the 3-wayvalve.
 • Leave the valve on the charging cylinder closed.
 3. Air purging.
 • Open the valves on the charging cylinder and the
charge set. Purge the air by loosening the flare nut on
the 2-wayvalve approximately 45° for 3seconds then
closing it for 1 minute; repeat 3 times.
 • After purging the air, use...

(Gas leakage)
 1. Confirm that both the 2-way and 3-wayvalves are set to
the open position.
 2. Connect the charge set tothe 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
2G (0.05 to 0.1 MPa).
 • If there is no air in the refrigeration cycle [ the pressure
when the air conditioner is not running...