Ulvac VS1501, Instruction Manual

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SK00-4390-DI-002-11
5
2. Pump Outline
2.1 Characteristics
VS series pumps are Rotary wing type (Goethe type) single stage vacuum pumps designed to
apply
to such process like vacuum packaging, suction transfer, electronic device, thermal process and so
on that use the vacuum.
This machine is equipped with functions as described below;
(1) Low noise, low vibration.
(2) Adopted Spring less vane.
It prevents the pump from stop by spring break.
(3) Adopted special cooling system and forced lubrication method.
This adoption ensures a stable discharge performance under high suction pressure. Further,
optional additions (Oil mist trap , oil return from the Oil mist trap) shall enhance the stable
exhaust performance under continuous discharge operation around atmospheric pressure.
(4) Adopted hydraulic oil anti-suck method.
If you stopped the Pump long time by a sudden blackout without returning the Suction line to
the atmospheric pressure, the pump oil might flow back in the cylinder and cause trouble in
restarting operation. This machine has equipped the Oil anti-suck to prevent the oil from
flowing
back at maximum to decrease the load in restarting the pump.
(5) Adopted variable oil volume system.
This machine is equipped with a wider oil volume indicator so as to facilitate the oil volume
control. Pump operation is available any time if the oil level was within the indicated oil
volume
range.
(6) Gas Ballast Function
This product is installed with the gas ballast function as standard. When using the gas ballast
function depending on the application, the needle valve, the pipe and the like are connected
to gas ballast port (G3/8).It is applicable to breathe in the condensed gas such as the steam
and solution vapor.