Vacuum Pumps - Rietschle Thomas VACFOX VC 50 Instrucciones De Uso

Operating Instructions

Vacuum pumps

Pump ranges
These operating instructions apply
to the following oil flooded rotary
vane vacuum pumps: VC 50, VC 75,
VC 100 and VC 150
The nominal vacuum capacities at
atmosphere are 50, 70, 100 and 150
m 3 /hr operating on 50 cycles. The
pumping curves showing capacity
against vacuum can be seen in data
sheet D 231.
Description
VC 50, VC 75, VC 100 and VC 150
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 be-
tween the pump housing and the
motor, a high efficiency 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.
This prevents oil moving into the pumping cylinder when the pump is stationary. Excessive oil in the cylinder could cause
a hydraulic lock when the pump is started and hence undue stress on the rotor blades.
The gas ballast valve 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.
All the pumps are driven by a direct flanged three phase, standard TEFV motor via a 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) and various vacuum gauges (ZVM).
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.
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 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.
When handling oxygen, the saftey instruction sheet XE 3 should be 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 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.
O
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A Thomas Industries Company
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VC
VC 50
VC 75
VC 100
VC 150
BE 231
3.3.2004
Rietschle Thomas
Schopfheim GmbH
Postfach 1260
79642 SCHOPFHEIM
GERMANY
Fon 0 76 22 / 3 92-0
Fax 0 76 22 / 39 23 00
e-mail:
info.sch@rtpumps.com
www.rtpumps.com/sch
Rietschle Thomas
UK Ltd.
Bellingham Way
NEW HYTHE
KENT ME20 6XS
UNITED KINGDOM
Fon 0 16 22 / 71 68 16
Fax 0 16 22 / 71 51 15
e-mail:
ukinfo@rtpumps.com
www.rtpumps.com/uk