In case of gas leakage, tighten
parts of pipe connection. If
leakage stops, then proceed
6 steps.
Purging method: to use vacuum pump
2 way valve
3 way valve
90
0
Service port
90
0
for 6 sec.
6 .Detach the charge hose from the service port, open
2-way valve and 3-way. Turn the valve rod anticlockwise
until hitting lightly.
Liquid stop valve
2 way valve
3 way valve
Gas stop valve
Gauge maifold(R410A)
Vacuum pump(R410A)
Open
Close
2 way valve
3 way valve
6
6
2 way valve
3 way valve
Valve rod cap
Valve rod cap
Service port cap
Less than 5cm
It becomes high midway.
The end is immersed
in water
It waves.
It gap with the
ground ts too small.
There is the bad
smell from a ditch.
Please pour water in the drain pan of the indoor unit, and confirm that drainage is carried out serely
to outdoor.
In case that the attached drain hose is in a room, please apply heat insulation to it without fail.
1 .Detach the service port's cap of 3-way valve, the valve
rod's cap for 2-way valve and 3-way valves, connect the
service port into the projection of charge hose (low) for
gaugemanifold. Then connect the projection of charge
hose (center) for gaugemanifold into vacuum pump.
2 .Open the handle at low in gaugemanifold, operate
vacuum pump. If the scale-moves of gause (low) reach
vacuum condition in a moment, check 1 again.
3 .Vacuumize for over 15min. And check the level gauge
which should read -0.1MPa (-76 cm Hg) at low pressure
side. After the completion of vacuumizing, close the handle
'Lo' in the vacuum pump. Check the condition of the scale
and hold it for 1-2min. If the scale-moves back in spite of
tightening, make flaring work again, then return to the
beginning of 3 .
4 .Open the valve rod for the 2-way valve to and an angle
of anticlockwise 90 degree. After 6 seconds, close the 2-
way valve and make the inspection of gas leakge.
5 .No gas leakage?
If it does not stop gas leakage, discharge
whole refrigerants from the service port.
After flaring work again and vacuumize, fill
up prescribed refrigerant from the gas
cylinder.
7 .To prevent the gas leakage, turn the service ports cap,
the valve rodis cap for 2-way valve and 3-way's a little
more than the point where the torque increases suddenly.
-22-
Commercial Air Conditioner
Model: AU18
/22
2XFERA
AS072/092/122XVERA
