Werbung
Verfügbare Sprachen
Verfügbare Sprachen
Operating Instructions
Roots vacuum pumps
Pump ranges
These operating instructions concern the
following contact-less operating Roots
vacuum pump: Model VWP 2500
The vacuum capacities at atmosphere
are 2293 m
3
/hr operating on 50 cycles.
The pumping curves which show max.
compression ratio against pre-vacuum,
can be found in data sheet D 201.
Description (picture
)
Roots pumps are two shaft, rotary piston
pumps, where two symmetrical rotary pistons
are rotating in opposite directions in a
housing and are synchronised by a pair of
toothed gears.
The pumping chamber of Roots pumps is
oil free. The synchronised drive gears
and the bearings for the rotors are oil
lubricated. The drive gears and the bear-
ings are fitted into the two end chambers
which also contain the oil tanks.
Both the end chambers are separated
from the pumping chamber using laby-
rinth and piston ring seals. Both oil tanks
are designed so that all rotational speeds,
bearings and gears are supplied with the
correct amount of oil.
An integral unloading valve (C) gives the automatic facility to start the Roots pump at the same time as the backing pump.
Consequently when starting, an overload of the drive motor can be avoided.
High-vacuum connection (A) and pre-vacuum connection (B) have flanges according to DIN EN 1092-1.
The pump is driven by a direct flanged three phase, standard TEFV motor via a coupling.
Optional extras: if required, protection mesh on the inlet, thread connection G 3 and G 4, liquid separator, motor starter
and base frame.
Suitability
The unit VWP 2500 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 Roots pumps VWP are primarily used for producing coarse and fine vacuum and for handling gasses and vapours.
They can tolerate water vapour and most corrosive vapours. Contamination that could be drawn in such as dust and liquid
can not build up in the conveyor chamber even after shutdown because the direction of flow is from the top to the bottom
of the units.
Roots boosters are normally used in combination with backing pumps.
The ambient and suction temperatures must be between 5 and 40° C. For temperatures outside this range
please contact your supplier.
Liquid slugs and solids cannot be handled.
Inflammable, poisonous or explosive gases and vapours must not be handled by standard versions.
In order to prevent aggressive media from penetrating into the gear chamber, sealing gas can be superimposed over the
labyrinth sealing system (see sealing gas connection (S)). For further information please contact our company.
The standard versions may not be handled in explosion areas.
For all applications where an unplanned shut down of the Roots pump could possibly cause harm to
persons or installations, the corresponding safety backup system must be installed.
The VWP 2500 can be supplied in 4 different connection positions. Standard version is position 01.
A
01
B
A
B
02
03
B
A
C
B
A
A
B
04
VWP
VWP 2500
B
BE 201
2.6.2005
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
Werbung
