Vivax ACP-09CH25AEI, Service Manual, Page: 28 / 54

25
meter indicates -76cmHg.
6. Turn the stem of the Hi valve about 45
°
counterclockwise for 6 or 7seconds after the gas coming
out, then tighten the flare nut again. Make sure the pressure display in the pressure indicator is a
little higher than the atmosphere pressure.
7. Remove the charge hose from the Lo pressure charge hose.
8. Fully open the Hi and Lo packed valve.
9. Securely tighten the cap of the packed valve.
6.8 Pumping down (Re-installation)
Procedure
1.Confirm that both the 2-way and 3-way valves 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-way
valve.
Connect the charge hose with the push pin to the gas service port.
4. Air purging of the charge hose.
Open the low-pressure valve on the charge set slightly to purge air from the charge hose.
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