1-19
English
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CAUTION
R407C must be charged as liquid. Usually R407C cylinder is equipped with a dip-pipe for liquid withdrawal. If there
is no dip-pipe, the cylinder should be inverted so as to withdraw liquid R407C from the valve.
Do not top-up when servicing leak, as this will reduce the unit performance. Vacuum the unit thoroughly and then
charge the unit with fresh R407C according to the amount recommended in the speci
fi
cation.
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VACUUMING AND CHARGING
HIGH PRESSURE GAUGE
GAUGE MANIFOLD
LOW PRESSURE GAUGE
HANDLE
HI
(ALWAYS CLOSED)
CHARGE HOSE
-760mmHg
HANDLE
LO
CHARGE HOSE
VACUUM PUMP
ADAPTER FOR
COUNTER FLOW
PREVENTION
LIQUID VALVE
GAS VALVE
(3-WAY)
CHECK VALVE
CONFIGURATION OF AIR
PURGE BY CHARGING
Vacuuming is necessary to eliminate all moisture and air from the system. The series II Outdoor Unit is provided with flare
valve fittings.
Vacuuming The Piping And The Indoor Unit
Except for the outdoor unit which is pre-charged with
refrigerant, the indoor unit and the refrigerant connection
pipes must be air-purged because the air containing moisture
that remains in the refrigerant cycle may cause malfunction
of the compressor.
Remove the caps from the valve and the service port.
Connect the center of the charging gauge to the vacuum
pump.
Connect the charging gauge to the service port of the 3-way
valve.
Start the vacuum pump. Evacuate for approximately 30
minutes. The evacuation time varies with different vacuum
pump capacity. Confirm that the charging gauge needle has
moved towards -760mmHg.
Caution
If the gauge needle does not move to -760mmHg, be sure to
check for gas leaks (using the refrigerant detector) at flare
type connection of the indoor and outdoor unit and repair
the leak before proceeding to the next step.
Close the valve of the changing gauge and stop the vacuum
pump.
On the outdoor unit, open the suction valve (3 way) and
liquid valve (2 way) (in anti-clockwise direction) with 4mm
key for hexagon sacked screw.
Charge Operation
This operation must be done by using a gas cylinder and a
precise weighing machine. The additional charge is topped-up
into the outdoor unit using the suction valve via the service
port.
Remove the service port cap.
Connect the low pressure side of the charging gauge to the
suction service port center of the cylinder tank and close
the high pressure side of the gauge. Purge the air from the
service hose.
Start the air conditioner unit.
Open the gas cylinder and low pressure charging valve.
When the required refrigerant quantity is pumped into
the unit, close the low pressure side and the gas cylinder
valve.
Disconnect the service hose from service port. Put back
the service port cap.
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Refrigerant Piping
Outdoor Unit 3 Ways Valve
Service Port
Allen key
Flare nut
HIGH PRESSURE GAUGE
LOW PRESSURE GAUGE
GAUGE MANIFOLD
-760mmHg
HANDLE
LO
HANDLE
HI
(ALWAYS CLOSED)
CHARGE HOSE
CHARGE HOSE
LIQUID VALVE
GAS VALVE
(3-WAY)
CHECK VALVE
CONFIGURATION OF AIR
PURGE BY CHARGING
1-IM-CC&SB-D_ER-0412(0)-DAIKIN-E19 19
1-IM-CC&SB-D_ER-0412(0)-DAIKIN-E19 19
7/19/12 2:34:28 PM
7/19/12 2:34:28 PM
