INVENTOR DR2VI32-09WFI Benutzer- & Installationshandbuch Seite 26

Installation Procedure
Piping vavuum method: to use vacuum pump
1. Detach the service port's cap of 3-way valve, the valve rod's cap for 2-way
valve and 3-way valves, and 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, and operate vacuum pump. If the
scale-moves of gause (low) reach vacuum condition in a moment, check the step
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 the step 3.
4. Open the valve rod for the 2-way valve to 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? In case of gas leakage, tighten parts of pipe connection. If
leakage stops, then proceed the step 6. 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.
6. Detach the charge hose from the service port, open 2-way valve and 3-way.
Turn the valve rod anticlockwise until hitting lightly.
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.
CAUTION:
If the refrigerant of the air conditioner leaks, it is necessary to make all the refrigerant out. Vacuumize first, then charge the liquid
refrigerant into air conditioner according to the amount marked on the nameplate.
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Liquid stop valve
2 way valve
2 way valve
3 way valve
3 way valve
Open
Close
2 way valve
3 way valve
Service port
90 for 6 sec.
2 way valve
3 way valve
2 way valve
3 way valve
Valve rod cap
Valve rod cap
Service port cap
Vacuuming
Gas stop valve
Gauge manifold (R32)
Vacuum pump (R32)