Safety And Leakage Check - Vivax ACP-18COFM50AEEI User Manual

When Using the Vacuum Pump
(For method of using a manifold valve, refer to its operation
manual.)
1. Completely tighten the flare nuts, A, B, C, D, connect the
manifold valve charge hose to a charge port of the low-
pressure valve on the gas pipe side.
2. Connect the charge hose connection to the vacuum pump.
3. Fully open the handle Lo of the manifold valve.
4. Operate the vacuum pump to evacuate. After starting
evacuation, slightly loose the flare nut of the Lo valve on the
gas pipe side and check that the air is entering(Operation
noise of the vacuum pump changes and a compound meter
indicates 0 instead of minus)
5. After the evacuation is complete, fully close the handle Lo of
the manifold valve and stop the operation of the vacuum
pump. Make evacuationfor15minutesormore and check that
the compound meter indicates -76cmHg (-1x10
6. Turn the stem of the packed valve B about 45
clockwise for 6~7 second s 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 Low pressure charge
hose.
8. Fully open the packed valve stems B and A.
9. Securely tighten the cap of the packed valve.

Safety and leakage check

• Electrical safety check
Perform the electric safe check after completing installation:
1. Insulated resistance
The insulated resistance must be more than 2M Ω
2. Grounding work
After finishing grounding work, measure the grounding
resistance by visual detection and grounding resistance tester.
Make sure the grounding resistance is less than 4 Ω .
3. Electrical leakage check(performing during test running)
During test operation after finishing installation, the service
man can use the electroprobe and multimeter to perform the
electrical leakage check. Turn off the unit immediately if
leakage happens. Check and find out the solution ways till the
unit operate properly.
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