Operating Instructions
10/2010
1096.0799 | VU / VH Series
9
3 Design and functioning
3.1 Marking
3.1.1 Nameplate
1
2
1 Pump
type
2 Plant
number
Fig. 1
Nameplate (example)
3.1.2 ATEX
plate
II 2G c b TX
Regenburger Ring 6-8
DE -91154 Roth
Tel.: +49 9171 809 0
Fax: +49 9171 80910
1
1 Explosion protection mark
Fig. 2
ATEX plate (example)
3.1.3
Pump type code
VU
300
53
10
0000
VH
300
53
10
0000
1
2
3
4
5
1 Series
2 Size
3 Mechanical
seal
4 Material design code
5 Counting
number
Fig. 3
Pump type code (example)
3.2 General
description
The pumps of the VU series are horizontal liquid ring vacuum
pumps with a single stage and radial suction/pressure connec-
tion. The internal control of the media to be pumped is realized
by means of inter casings.
The VU 20 – 1600 types are liquid ring vacuum pumps in base
plate version. The electrical drive is connected to the pump shaft
(3) via a coupling. The pump shaft (3) is mounted in rolling
bearings (4) on both sides. Usually, pump and motor are
mounted onto one base plate. Two maintenance-free mechani-
cal seals (5) in the shaft sealing casings are used to seal the
pump shaft.
2
1
1
3
4
4
5
5
1 Inter
casings
2 Impeller
3 Motor/pump shaft
4 Rolling
bearing
5 Mechanical
seal
Fig. 4
Description VU
