Ulvac VD151, Инструкция по эксплуатации

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YK08-0028-DI-002-08
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CAUTION
If you kept opening the Gas ballast valve when not exhausting the
condensed gas, it might cause the oil splash, power loss or ultimate
pressure rise.
Keep the Gas ballast valve closed when not exhausting the
condensed gas.
WARNING
Th
e
guaranteed pressure resistance of this pump is 0.03 MPa (0.3 kg /
cm2) (gauge pressure). Operate the supply pressure of the gas ballast
gas to be introduced within the following range.
Supply pressure: Atmospheric pressure to 0.03 MPa (0.3 kg / cm2
(gauge pressure)) or less .
4.5 Vacuum Pump Oil For cold district
Starting the Pump operation might become difficult in winter season or in the cold district.
This is the overload phenomenon caused by increased viscosity of the pump oil. To make sure,
you should confirm that the capacity of the motor overload protective device conforms to the
motor rated value, the pump is not broken and the cable does not have abnormality. Then, warm
up the Pump oil or replace the oil with the Vacuum pump oil ULVOIL R-42 having lower viscosity.
Recommended type of oil:
1) ULVOIL R-72 (standard oil)
2) ULVOIL R-42 (Cold area or winter time)
IMPORTANT
1) When temperature is low, and a pump does not run, warm up the
pump oil or turn the pump on and off several times in short intervals.
2) When the pump stops after run for several seconds, you try to
move it while putting slow leak in it, there is the thing that the pump
can run consecutively (refer to fig.5).
As the pump warmed, you close the slow leak valve, and please
return it to regular running.