Gardner Denver
Schopfheim GmbH
Postfach 1260
79642 SCHOPFHEIM
GERMANY
Fon +49 7622 / 392 - 0
Fax +49 7622 / 392 - 300
e-mail: er.de@
gardnerdenver.com
www.gd-elmorietschle.com
V-VC
V-VC 202
V-VC 303
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Operating Instructions
BE 232/20
1.8.2008
Vacuum pumps
Pump ranges
These operating instructions apply
to the following oil fl ooded rotary
vane vacuum pumps: V-VC 202 and
V-VC 303
The nominal vacuum capacities at
atmosphere are 200 and 300 m
3
/hr
operating on 50 cycles. The pump-
ing curves showing capacity against
vacuum can be seen in data sheet
D 231/20.
Description
V-VC 202 and V-VC 303 vacuum
pumps are fi tted with a mesh fi lter
on the pump inlet. The vacuum
pump is enclosed in a sound box.
On the exhaust side of the pump an
oil mist eliminator is fi tted which has
the function of re-circulating oil back
into the circulation system, as well as providing high effi ciency separation on the pump exhaust. Situated between the
pump housing and the motor, a high effi ciency cooling fan pulls cooling air in through the fan cover, which results in the
cooling of the re-circulating oil.
A standard built-in non return valve on the inlet of the pump seals the pump from the process when the pump is stopped.
When downtimes of over two minutes, the connected pipe should be aerated on atmospheric pressure.
The gas ballast valve (U) which is fi tted as standard avoids at its operating temperature any condensation of a small
amount of water vapour inside the pump and hence emulsifi cation of the oil. The gas ballast vapour handling capacity
can be increased if required to tolerate higher vapour loads than normal.
All the pumps are driven by a direct fl anged three phase, standard TEFV motor via a coupling.
Optional extras: The following standard optional extras can be supplied if required: Vacuum regulating valve (ZRV), ad-
ditional non return valve (ZRK), dust inlet fi lter (ZFP), high vacuum suction fi lter (ZVF), motor starter (ZMS), soft starter
(ZAD) and various vacuum gauges (ZVM).
Suitability
The units V-VC are suitable for the use in the industrial fi eld i.e. the protection equipments corresponds to
DIN EN 294 table 4, for people aged 14 and above.
These models can be used for the evacuation of a closed system or for a permanent vacuum from: 0.5 to 500 mbar
(abs.)
When these pumps are operated permanently outside the ranges listed above there may be oil seepage at the exhaust
port. For evacuation of closed systems the volume to be evacuated must not exceed 2% of the nominal capacity of the
vacuum pump.
For continuous operation > 100 mbar (abs.) we recommend the bigger motor size.
Amounts of water vapour may be handled. Water, other liquids, aggressive or infl ammable gases and vapours
may not be handled. For water vapour tolerance, see information I 200.
Handling of infl ammable or aggressive gases and vapours is only possible with special versions, if the safety
instructions XE 2 are noted.
The ambient and suction temperatures must be between 12 and 40°C. For temperatures outside this range
please contact your supplier.
The standard versions may not be used in hazardous areas.
The back pressure on the exhaust port must not 0.1 bar.
All applications where an
unplanned shut down of the
vacuum pump could possibly cause
harm to persons or installations,
then the corresponding safety
backup system must be installed.
