Elmo Rietschle VC 200 - Manual (Page 5)

VC
VC 200
VC 300
D
ᕡ
F
F
A
F
E
F
E
E
B
E
X
N M O
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
Operating Instructions
Vacuum pumps
Pump ranges
These operating instructions concern
the following oil flooded rotary vane
vacuum pumps: VC 200 and VC 300
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 232.
Description
VC 200 and VC 300 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 cir-
culation system, as well as providing
high efficiency 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. 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 which is fitted as standard avoids 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.
All the pumps are driven by a direct flanged three phase, standard TEFV motor via a pin and bush coupling.
Optional extras: The following standard optional extras can be supplied if required: Vacuum regulating valve (ZRV),
additional non return valve (ZRK), dust inlet filter (ZFP), high vacuum suction filter (ZVF), direct on line (DOL) motor
starter (ZMS), softstarter (ZAD) and various vacuum gauges.
Suitability
The units VC are suitable for the use in the industrial field i.e. the protection equipments corresponds to
DIN EN 294 table 4, for people aged 14 and above.
The ultimate vacuum can be user selected at either 0.5 mbar (abs.) for fine vacuum or 10 mbar (abs.) for coarse vacuum
(see adjusting bolt (X)).
These models can be used for the evacuation of a closed system or for a permanent vacuum from:
Fine vacuum
➝ 0.5 to 100 mbar (abs.) • Coarse vacuum ➝ 10 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.
Amounts of water vapour may be handled. Water, other liquids, aggressive or inflammable gases and
vapours may not be handled. For water vapour tolerance, see information I 200.
Handling of inflammable 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 5 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 exceed + 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.
BE 232
1.8.2007