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5 Purging Method: To use vacuum pump
Open the handle at low in gaugemanifold, operate
vacuum pump. If the scale-moves of gause (low)
reach vacuum condition in a moment, check again.
vacuum pump.
of change hose (center) for gaugemanifold into
(low) for gaugemanifold. Then connect the projection
the service port into the projection of change hose
valve rod's cap for 2-way valve and 3-way's, connect
Detach the service port's cap of 3-way ,the
Vacuumize for over 15min. And check the level gauge
which should read -0.1MPa (-76cmHg) at low
pressure side. After the completion of vacuumizing.
close the handle 'Lo' in gaugemanifold and stop the
operation of 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, the return to the beginning of
Open the valve rod for the 2-way valve to an angle of
anti-clockwise 90 degrees.
After 6 seconds, close the 2-way valve and make the
inspection of gas leakage.
No gas leakage?
In case of gas leakage, tighten
parts of pipe connection. If
leakage stops, then proceed
steps.
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.
Detach the charge hose from the service port, open
2-way valve and 3-way. Turn the valve rod anti-clockwise
until hitting lightly.
To prevent the gas leakage, turn the service port's
cap, the valve rod's cap for 2-way valve and 3-way's
a little more than the point where the torque increases
suddenly.
After attaching the each caps, check the gas leakage
around the caps.
CAUTION:
1.If the refrigerant of the air conditioner leaks, it is necessary to
discharge the refrigerant out. Vacuumize first, then charge the
liquid refrigerant into air conditioner according to the amount marked
on the name plate.
2.Please do not let other cooling medium, except specified one (R410A),
or air enter into the cooling circulation system. Otherwise, there will be
abnormal high pressure in the system to make it crack and lead to
personal injuries.
Liquid Side Gas Side
6.35mm(1/4") 9.52mm(3/8")
12.7mm(1/2")
2-way valve
3-way valve
Gaugemanifold(for R410A)
Vacuum pump(for R410A)
Tube(for R410A)
Anti countercurrent joint
Open
Open
Close
2-way valve
3-way valve
2-way valve
3-way valve
for 6 sec.
Service port
2-way valve
3-way valve
Valve rod cap
Valve rod cap
Service port cap
63
Model:
HSU-12HS03/R2(DB)
HSU-09HS03/R2(DB)Domestic Air Conditioner