Elmo Rietschle V-VL 10/25/40/80/100 - Manual (Page 5)

M N
E
F
F
F
F
O
E
K I
H
E
S A
Y
B
ᕡ
VL 10
VL 25
VL 40
VL 80
VL 100
VL
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 fresh oil lubricated rotary vane
vacuum pumps:
VL
➝ ultimate vacuum 30 mbar abs.
The vacuum capacities at atmosphere
are 10, 25, 40, 80 and 100 m
3 /hr operat-
ing on 50 cycles. The pumping curves
showing capacity against vacuum can be
seen in data sheet D 108.
Description (pictures ᕡ and ᕢ)
The VL models are fitted as standard with
a mesh filter on the pump inlet to protect
the unit from particles larger than 0.5 mm.
An oil lubricating pump, supplying me-
tered fresh oil to the compression cham-
bers and the bearing, is mounted in the
fresh oil tank (Y).
The version (05) is equipped with an ex-
ternal oil lubricating pump (L) and an oil level switch (V) for fresh oil (see picture
ᕢ).
At the rotor with bearings on both sides, the bearings are separated against the chamber by shaft seals and are protected
from aggressive vapours. Situated between the pump housing and the motor, a high efficiency cooling fan pulls air over
the double walled cylinder and out through the fan cover, which also provides protection from accidentally touching the
fan when the pump is in operation. All the pumps are driven by a direct flanged three phase, standard TEFV motor via
a pin and bush coupling. Inlet and outlet have alternatively a vacuum flange (DIN 28 404) or a threaded flange. The
standard version will be delivered without oil mist separator.
Optional extras: if required: liquid separator, oil mist separator, non return valve, star delta starter, vacuum switch,
vacuum gauge, dust separator vacuum tight, 2/2-way solenoid valve, clamped flange, small flange fittings and motor
starter.
Suitability
The units VL are suitable for the use in the industrial field i.e. the protection equipments corresponds to
EN DIN 294 table 4, for people aged 14 and above.
These fresh oil lubricated vacuum pumps are available for handling a wide range of gases including those which are
extremely wet or aggressive. They can also handle large quantities of water vapour.
Liquid slugs and solids cannot be handled.
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. Special versions with Ex-proof motors can be supplied.
The back pressure on the exhaust port must not exceed + 0.3 bar.
All applications where an unplanned shut down of the vacuum pump could possibly cause harm to persons
or installations, the corresponding safety backup system must be installed.
Handling and Setting up (pictures ᕡ, ᕢ and ᕣ)
Pumps that have reached operating temperature may have a surface temperature at position (Q) of more
than 70°C. WARNING! Do Not Touch.
Oil filler port (H), oil sight glass (I), oil drain plug (K), oiler (G), milled screw (G
1
) and angle flange (S) must all be easily
accessible. The cooling air entries (E) and the cooling air exits (F) must have a minimum distance of 20 cm from any
obstruction. The discharged cooling air must not be re-circulated. For maintenance purposes we recommend a space
of 30 cm in front of the fresh oil tank (Y), angle flange (S) and the motor (m).
The VL pumps can only be operated reliably if they are installed horizontally.
For installations that are higher than 1000 m above sea level there will be a loss in capacity. For further
advice please contact your supplier.
When installed on a solid base, the pumps may be installed without fixing down. If the pumps are installed on a base plate
we would recommend to fit anti vibration mounts are fitted. This range of vacuum pumps are almost vibration free in
operation.
The vacuum pump VL can be operated in 8 different connection positions. Standard version is position 01.
BE 108
1.4.2000