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Operating Instructions
Vacuum pumps for handling of gases with raised oxygen-share
Pump ranges
These operating instructions apply to the follow-
ing oil flooded rotary vane vacuum pumps
for handling of gases with raised
oxygen-share: V-VC 202 OXY
and V-VC 303 OXY
The nominal vacuum capacities
at atmosphere are 200 and 300
m
/hr operating on 50 cycles.
3
The pumping curves showing
capacity against vacuum can be
seen in data sheet D 232/20.
Description
V-VC 202 OXY and V-VC 303 OXY
vacuum pumps are fitted with a mesh
filter 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 fitted which
has the function of re-circulating oil back into the
circulation system, as well as providing high efficiency
separation on the pump exhaust. Situated between the pump housing and the motor, a high efficiency cooling fan pulls
cooling air in through the fan cover. A further fan inside of the oil cooler 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 fitted as standard avoids at its operating temperature any condensation of a small amount of water
vapour inside the pump and hence emulsification of the oil. The gas ballast vapour handling capacity can be increased
if required to tolerate higher vapour loads than normal.
For better differentiation compared with the standard versions the VC OXY pumps are varnished in blue colour.
All the pumps are driven by a direct flanged three phase, standard TEFV motor via a coupling.
Suitability
Warning – The vacuum pumps VC OXY can be only operated under the subsequently described condi-
tions.
Any non compliance may lead to danger of explosion!
For lubrication of the vacuum pumps VC OXY may be only used the oil type OXY-LUBE PLUS 100 specified by Elmo
Rietschle.
The units VC OXY are suitable for the use in the industrial field i.e. the protection equipments corresponds to DIN EN
294 table 4.
These models can be used for the evacuation of a closed system or for a permanent vacuum from: 1 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.
These vacuum pumps VC OXY are suitable for vacuuming of air or other dry gases with raised oxygen-share (volume-
share > 21%).
Warning – not permissible aspiration of certain medias
Any non compliance may lead to severe injury to persons and damage to the VC OXY may occur!
Amounts of water vapour may be handled. Water and other liquids may not be handled.
Aggressive, harmful and explosive gases and organic substances may not be sucked off.
For water vapour tolerance, see information I 200.
The vacuum pump VC OXY may not be used in hazardous areas.
The back pressure on the exhaust port must not exceed + 0.1 bar.
Caution – Do not exceed the temperature
At non compliance severe damage may occur on the VC OXY.
The ambient and suction temperatures must be between 5 and 40°C. For temperatures outside this range please
contact your supplier.
Caution – Potential risks for operating personnel
Noise Emission: When working permanently in the vicinity of an operating VC OXY, we recommend wearing ear
protection to avoid any damage to hearing.
Oil mist in the exhaust stream: The exhausted air could still contain extremely low amounts of oil mist which can
occasionally be detected by smell. Permanent inhalation of these mists may result in health problems, therefore
it is extremely important to make sure that the installation area is well ventilated.
B
F
E
F
F
F
- 1 -
O
A
V-VC
V-VC 202 OXY
V-VC 303 OXY
U
E
E
Œ
BE 232 / 42
1.4.2009
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
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