Speck pumpen VU Series User manual

Operating Instructions
VU / VH Series
VU 20 - 1600
VH 20 - 1600
Liquid Ring Vacuum Pumps
English translation of the original operating
instructions
Documentation
It is imperative to read the operating instruc-
tions prior to commissioning!
This document as well as all documents in-
cluded in the appendix is not subject to any
update service!
Subject to technical changes.
Speck Pumpen Vakuumtechnik GmbH
Regensburger Ring 6 – 8, 91154 Roth / Germany
PO Box 1453, 91142 Roth / Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.speck-pumps.de
Issue:
10/2010
Supersedes issue:
06/2010
Doc./ Item no.:
1096.0799

Operating Instructions
2 1096.0799 | VU / VH Series 10/2010
Index
Index...........................................................................................2
1Important basic information.............................................4
1.1Target groups........................................................... 5
1.2Applicable documents .............................................. 5
1.3Warnings and symbols............................................. 6
1.4Terminology ............................................................. 6
2Safety..................................................................................7
2.1Intended use ............................................................ 7
2.2Possible misuse ....................................................... 7
2.3General safety instructions....................................... 7
2.3.1Product safety .......................................................... 7
2.3.2Obligations of the operator....................................... 7
2.3.3Obligations of the staff ............................................. 8
2.4Residual risks........................................................... 8
2.5Special risks ............................................................. 8
2.5.1Potentially explosive area ........................................ 8
2.5.2Dangerous media to be pumped.............................. 8
3Design and functioning.....................................................9
3.1Marking .................................................................... 9
3.1.1Nameplate................................................................ 9
3.1.2ATEX plate ............................................................... 9
3.1.3Pump type code ....................................................... 9
3.2General description .................................................. 9
3.3Design and functional principle .............................. 10
3.4Shaft sealing .......................................................... 10
3.4.1Mechanical seal ..................................................... 10
3.4.2Packing gland......................................................... 10
4Transport, storage and disposal...................................11
4.1Transport................................................................ 11
4.1.1Unpacking and inspection on delivery ................... 11
4.1.2Manual transport .................................................... 11
4.1.3Transport with lifting gear....................................... 11
4.2Storage................................................................... 12
4.3Preservation ........................................................... 12
4.3.1Preservation inside the system .............................. 12
4.3.2Preservation outside the system ............................ 12
4.4Removing preserving agent ................................... 13
4.5Disposal ................................................................. 13
5Set-up and connection....................................................14
5.1Preparing set-up..................................................... 14
5.1.1Checking ambient conditions ................................. 14
5.1.2Minimum clearances for heat dissipation ............... 14
5.1.3Preparing installation site ....................................... 14
5.1.4Preparing foundation and surface .......................... 14
5.1.5Removing preserving agent ................................... 14
5.2Set-up with foundation ........................................... 14
5.2.1Placing aggregate on foundation ........................... 14
5.2.2Fixing aggregate .................................................... 14
5.3Set-up without foundation ...................................... 15
5.4Set-up on torsion-resistant level surface/frame...... 15
5.5Motor installation .................................................... 15
5.6Planning pipe system ............................................. 15
5.6.1Dimensioning supports and connections................15
5.6.2Specifying nominal diameter ..................................15
5.6.3Specifying pipe lengths...........................................16
5.6.4Changes in cross-section and direction .................16
5.6.5Safety and control devices .....................................16
5.7Connecting pipes....................................................16
5.7.1Providing for clean piping .......................................16
5.7.2Installing suction pipe .............................................16
5.7.3Installing pressure pipe...........................................16
5.7.4Stress-free pipe connection....................................16
5.8Fine adjustment of coupling....................................16
5.8.1Checking coupling adjustment................................16
5.9Motor adjustment....................................................17
5.10Electrical connection...............................................17
5.10.1Motor connection ....................................................17
5.10.2Checking direction of rotation .................................17
6Operation..........................................................................18
6.1Preparations for commissioning .............................18
6.1.1Identifying pump type .............................................18
6.1.2Removing preserving agent....................................18
6.1.3Checking shut-down period ....................................18
6.1.4Filling ......................................................................18
6.2Commissioning .......................................................18
6.2.1Switch-on................................................................18
6.2.2Switch-off................................................................19
6.3Setting the operating liquid flow rate ......................19
6.3.1Continuous-flow cooling .........................................19
6.3.2Open circulation cooling .........................................19
6.3.3Closed circulation cooling.......................................20
6.4Decommissioning ...................................................20
6.5Re-commissioning ..................................................20
6.6Operating stand-by aggregate................................20
7Maintenance and servicing.............................................21
7.1Monitoring...............................................................21
7.2Lubrication intervals for rolling bearings.................21
7.3Rinsing off contaminations .....................................21
7.3.1Minor fine-grained contamination ...........................21
7.3.2Major fine-grained contamination ...........................21
7.4Preventing calcification...........................................22
7.5Disassembly ...........................................................22
7.5.1Return to manufacturer...........................................22
7.5.2Spare parts .............................................................22
7.5.3Pump/aggregate repairs .........................................22
7.5.4Disassembly of VU 20/40, VH 20/40/60 .................23
7.5.5Disassembly of VU 80/140/220 VH 110/140/180 ...23
7.5.6Disassembly of VU 300/450, VH 300/350/400 ......24
7.5.7Disassembly of VU 351/451 ...................................24
7.5.8Disassembly of VU 500/600/800/1200/1600 ..........25
7.5.9Preparations for assembly......................................26
7.5.10Assembly of VU 20/40, VH 20/40/60 ......................26
7.5.11Assembly of VU 80/140/220, VH 110/140/180 ......27
7.5.12Assembly of VU 300/450, VH 300/350/400 ............28
7.5.13Assembly of VU 351/451 ........................................30
7.5.14Assembly of VU/VH 500/600/ 800/1200/1600 ........31
8Troubleshooting...............................................................33
9Technical data..................................................................36
9.1Operating limit values .............................................36
9.1.1Media to be pumped...............................................39

Operating Instructions
10/2010 1096.0799 | VU / VH Series 3
9.1.2Operating liquid ......................................................39
9.1.3Switching frequency ............................................... 39
9.2General technical data ...........................................39
9.2.1Weight ....................................................................39
9.2.2Sound level............................................................. 39
9.2.3Drive power ............................................................39
9.2.4Operating liquid ......................................................40
9.2.5Medium to be pumped............................................40
9.2.6Operating connections ........................................... 41
9.2.7Mechanical seal...................................................... 41
9.2.8Ambient conditions ................................................. 41
9.2.9Clearances for heat dissipation ..............................41
9.2.10Tightening torques.................................................. 42
9.3Conical pipe fittings ................................................ 43
9.4Permissible forces / torques acting on the pump
nozzles ...................................................................43
9.4.1Adjustment dimensions ..........................................43
9.5Lubricants...............................................................44
9.6Preserving agents ..................................................45
9.6.1Preservation filling volumes....................................45
9.7Test pressure for pressure test ..............................45
9.8Accessories ............................................................ 45
10Appendix...........................................................................46
10.1Dimension drawing VU 20/40.................................46
10.2Dimension drawing VU 80/140/220........................47
10.3Dimension drawing VU 300/450.............................48
10.4Dimension drawing VU 351/451.............................49
10.5Dimension drawing VU 500/600.............................50
10.6Dimension drawing VU 800/1200/1600..................51
10.7Dimension drawing VH 20/40/60............................52
10.8Dimension drawing VH 110/140/180......................53
10.9Dimension drawing VH 300/350/400......................54
10.10Dimension drawing VH 500/600.............................55
10.11Dimension drawing VH 800/1200/1600.................. 56
10.12Cross-sectional drawing VU 20-450.......................57
10.13Cross-sectional drawing VU 351/451 ..................... 58
10.14Cross-sectional drawing VU 500-1600...................59
10.15Cross-sectional drawing VH 20–400 ...................... 60
10.16Cross-sectional drawing VH 500-1600...................61
10.17Certificate of conformity..........................................62
10.18EC declaration of conformity ..................................63

Operating Instructions
4 1096.0799 | VU / VH Series 10/2010
1 Important basic information
These operating instructions form part of the technical documentation of the system in accordance with the EC machinery directive.
These operating instructions comply with machinery directive 2006/42/EC of the European Parliament and the Council on the approxi-
mation of the laws, regulations and administrative provisions of the Member States relating to machinery, Appendix I, Paragraph 1.7.4.
These operating instructions are addressed to the person in
charge of the plant, who is obliged to provide them to the staff
responsible for system set-up, connection, operation and main-
tenance.
He must ensure that all information included in the operating
instructions and the enclosed documents have been read and
understood.
The operating instructions must be kept at a designated and
easily accessible place and consulted at the slightest doubt.
The manufacturer does not accept liability for damage to per-
sons, animals, objects or the system itself incurred by improper
use, non-observance or incomplete observance of the safety
precautions included in these operating instructions or by modifi-
cations to the system or use of improper spare parts.
These operating instructions are the exclusive copyright of
Speck Pumpen Vakuumtechnik GmbH
Regensburger Ring 6 – 8, 91154 Roth / Germany
PO Box 1453, 91142 Roth / Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.speck-pumps.de
or its legal successor.
Duplication or transfer of these operating instructions to third
parties requires written approval of the manufacturer. This also
applies to the duplication or transfer of excerpts of these operat-
ing instructions and to the transfer of these operating instructions
in digital form.
These instructions
• form part of the pump/aggregate.
• apply to all series mentioned herein.
• describe safe and proper operation during all operational
phases.
• must be stowed safely throughout the entire service life of
the machine.
• must be handed over to future owners of the machine.
Scope of supply
• Liquid ring vacuum pump
• Operating instructions
• Motor (optional)
• Coupling/coupling guard (optional)
• Base plate (optional)
• Accessories (optional):
Separator
Gas ejector
Ball check valves
Vacuum check valve
Drainage valve
Technical support address
Speck Pumpen Vakuumtechnik GmbH
Regensburger Ring 6 – 8, 91154 Roth / Germany
PO Box 1453, 91142 Roth / Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.speck-pumps.de
Warranty and liability
Essentially the “General Conditions of Sale and Delivery” of
Speck Pumpen Vakuumtechnik GmbH applies.
They were provided to the operator at the time of contract con-
clusion at the latest.
Warranty and liability claims arising from personal injury and
material damage are excluded if one of the following conditions
applies:
• improper use of the liquid ring vacuum pump
• improper mounting, commissioning, operation and mainte-
nance of the liquid ring vacuum pump
• operation of the liquid ring vacuum pump despite defective
safety devices
• non-observance of the notes in the operating instructions
• unauthorized constructional changes to the liquid ring
vacuum pump
• inadequate maintenance, repair and servicing measures
• catastrophic events caused by foreign bodies or acts of
God

Operating Instructions
10/2010 1096.0799 | VU / VH Series 5
1.1 Target groups
Target group Task
Operator ►Keep these instructions available at the location of the
system, also for later consultation.
►Advise staff to read and observe these instructions and the
provided documents, particularly the safety precautions and
warnings.
►Observe additional provisions and regulations related to the
system.
Qualified staff, assembler ►Read, observe and adhere to these operating instructions
and all applicable documents, particularly the safety precau-
tions and warnings.
Tab. 1 Target groups and their tasks
1.2 Applicable documents
Document Purpose
ATEX additional instructions Operation in potentially explosive areas (only applicable to vac-
uum pumps designed for use in potentially explosive areas)
Declaration of conformity Conformity with standards
Tab. 2 Applicable documents

Operating Instructions
6 1096.0799 | VU / VH Series 10/2010
1.3 Warnings and symbols
Warning Security level Consequences of non-observance
DANGER
imminently hazardous situation death, severe personal injuries
WARNING
potentially hazardous situation death, severe personal injuries
CAUTION potentially dangerous situation minor personal injuries
CAUTION potentially dangerous situation material damage
Tab. 3 Warnings and consequences of non-observance
Symbol Meaning
Safety sign
►Observe all measures marked with the safety sign to avoid
personal injuries or death.
Safety sign
►Observe all measures marked with the safety sign to avoid
personal injuries or death by electric shock.
►Instruction for action
1. , 2. , … Multi-step instruction for action
Pre-requisite
Cross-reference
Information, note
Tab. 4 Symbols and meaning
1.4 Terminology
Term Meaning
Pump Liquid ring vacuum pump without drive, components or accessories
Aggregate Complete liquid ring vacuum pump including pump, drive,
components and accessories
Auxiliary operating systems Devices for operating the vacuum pump aggregate
Separator Device for separating gaseous from liquid media
Gas ejector Device for operating the vacuum pump aggregate for deep vacuum
Vacuum check valve Device for limiting the created vacuum
Drainage valve Device for limiting the filling level in the vacuum pump
Tab. 5 Terminology and meaning

Operating Instructions
10/2010 1096.0799 | VU / VH Series 7
2 Safety
The manufacturer does not accept liability for damage
resulting from non-observance of the overall documenta-
tion.
2.1 Intended use
• Observe all provisions included in the operating instruc-
tions.
• Observe all safety instructions.
• Comply with inspection and maintenance intervals.
• Use the aggregate exclusively for delivery of the permissi-
ble media to be pumped
(General technical data, page 39).
• Operate the pump/aggregate with permissible operating
liquid only (General technical data, page 39).
• Prevent dry running:
The sealing rings of the mechanical seal will be dam-
aged within only few seconds.
Ensure that the pump/aggregate is only operated with
sufficient operating liquid, never without operating
liquid.
• Prevent cavitation:
Install a vacuum check valve.
Comply with the temperature limits of the operating liq-
uid and the medium to be pumped.
Observe the limit values for inlet pressure and pres-
sure difference.
Do not operate the pump when the fitting in the suction
pipe is closed.
• Prevent overheating:
Do not operate the pump/aggregate when fittings are
closed.
• Prevent motor damage:
Observe the maximum flow rate for delivery of liquids.
Observe the switching frequency of the aggregate.
The motor protection switch must not be set to a value
above nominal current.
• Any use other than the intended use must be agreed with
the manufacturer.
2.2 Possible misuse
• Observe the operating limits of the pump/aggregate con-
cerning temperature, pressure, speed, density and viscosity
(Operating limits, page 36).
• The higher the density of the operating liquid, the higher the
motor power consumption. Observe the permissible density
to protect the aggregate against overload.
• When delivering solid laden liquids, observe the solid con-
tent limit values (General technical data, page 39).
• Do not combine multiple limit values
(Operating limit values, page 36).
• Prevent sudden pressure changes of the gas to be ex-
tracted.
• Prevent sudden temperature changes of the gas to be
extracted or operating liquid.
• Do not use in rooms where explosive gases may be present
unless the pump/aggregate has been expressly intended
for such purpose.
• Do not extract, deliver or compact explosive, inflammable,
aggressive or toxic media unless the aggregates have been
expressly intended for such purpose.
• Unauthorized opening of the pump/aggregate results in the
forfeiture of any and all claims for defects.
2.3 General safety instructions
The following provisions must be observed prior to execut-
ing any works.
2.3.1 Product safety
The pump/aggregate has been designed in accordance with
state-of-the-art technology and the generally acknowledged
rules on safety.
Yet, operation of this pump/aggregate may present a threat to
the life or physical health of the user or third parties and impair
the pump/aggregate and other property.
• Only operate the pump/aggregate in a technically flawless
condition and in accordance with the provisions, safety pre-
cautions and warnings included in these operating instruc-
tions.
• Keep these operating instructions as well as all supplied
documents complete and legible and ensure that they can
be accessed by staff at all times.
• Refrain from any operating methods which may put staff or
uninvolved third parties at risk.
• In case of defects having safety implications:
shut down the pump/aggregate immediately and consult the
person in charge to rectify the defect.
• In addition to the overall documentation, all legal or other
safety and accident prevention regulations as well as all
applicable standards and guidelines of the respective coun-
try of operation must be observed.
2.3.2 Obligations of the operator
2.3.2.1 Safety-conscious working
• Only operate the pump/aggregate in a technically flawless
condition and in accordance with the provisions, safety pre-
cautions and warnings included in these operating instruc-
tions.
• Ensure and verify compliance with:
intended use
legal or other safety and accident prevention regula-
tions
safety regulations applying to handling hazardous sub-
stances
applicable standards and guidelines of the respective
country of operation
• Provide for protective equipment.
2.3.2.2 Staff qualification
• Ensure that staff involved in pump/aggregate operation has
read and understood these operating instructions and all
applicable documents, particularly all safety, maintenance
and servicing information, prior to starting work.
• Define clear roles and responsibilities and arrange for staff
monitoring.
• All works must only be carried out by technically qualified
staff:
assembly, servicing, maintenance works
works on electrical equipment
• Staff undergoing training must only work on the
pump/aggregate under the supervision of technically quali-
fied staff.

Operating Instructions
8 1096.0799 | VU / VH Series 10/2010
2.3.2.3 Safety devices
• Provide for the following safety devices and ensure their
proper functioning:
for hot, cold and moving parts: on-site protection
against contact with the pump/aggregate
when electrostatic charging is likely to occur: provide
for grounding
2.3.2.4 Warranty
• During the warranty period, conversion works, repairs and
modifications are subject to approval by the manufacturer.
• Use original parts or parts approved by the manufacturer
only.
2.3.3 Obligations of the staff
• Notes attached to the pump/aggregate must be observed
and kept legible, e.g. arrows indicating the direction of rota-
tion, symbols indicating fluid connections.
• Guards for protection against contact with hot, cold and
moving parts must not be removed during operation.
• If required, use protective equipment.
• Do not expose parts of the body to the vacuum.
• Works on the pump/aggregate must only be carried out at
standstill.
• Prior to carrying out any assembly or maintenance works,
de-energize the motor and protect it against restart.
• Having completed all works on the pump/aggregate, duly
re-assemble the safety devices.
2.4 Residual risks
WARNING
Long and loose hair may become entangled in the protec-
tive covers of the motor and the shaft coupling.
►Wear a hairnet!
Risk of injuries caused by flying objects, which were in-
serted in the openings of the motor fan cover or in the
openings of the coupling guard!
►Do not insert any objects!
Risk of burns/scalds when getting in contact with hot sur-
faces or hot media!
►Do not touch!
►Wear protective gloves!
Risk of injuries caused by operating liquid escaping from a
defective mechanical seal!
►Shut down the pump!
►Repair the pump!
2.5 Special risks
2.5.1 Potentially explosive area
• (ATEX additional instructions)
2.5.2 Dangerous media to be pumped
• When dealing with dangerous media to be pumped (e.g.
hot, inflammable, explosive, toxic, hazardous to health), ob-
serve the safety regulations applying to handling hazardous
substances.
• Use protective equipment when carrying out any works on
the pump/aggregate.

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.: [phone]
Fax: [phone]
1
1 Explosion protection mark
Fig. 2 ATEX plate (example)
3.1.3 Pump type code
V
U 300 53 10 0000
V
H 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.
211 344 5 5
1 Inter casings
2 Impeller
3 Motor/pump shaft
4 Rolling bearing
5 Mechanical seal
Fig. 4 Description VU

Operating Instructions
10 1096.0799 | VU / VH Series 10/2010
The VH 20 - 1600 types are two-stage 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 mechanical seals (5) in the
shaft sealing casings are used to seal the pump shaft (3).
2
2
11 34
14 5 5
1 Inter casings
2 Impeller
3 Motor/pump shaft
4 Rolling bearing
5 Mechanical seal
Fig. 5 Description VH
Pumps of the VU/VH series allow for the delivery of small vol-
umes of liquids. The discharged operating liquid can be re-used
when using a separator.
3.3 Design and functional principle
The vacuum pump is operated in accordance with the liquid ring
principle.
The impeller is positioned off-centre in the cylindrical pump
casing. It transfers the drive power to a liquid ring, which forms
concentrically to the casing when the vacuum pump is started.
The gaseous medium remaining in the casing is distributed
around the impeller due to the lower density in the hub area. As
the impeller is positioned off-centre to the casing, the available
space for the gas between the surface of the liquid and the hub
becomes crescent-shaped.
This way, the remaining space for the gas between the blades
expands and shrinks during each rotation.
1 2
3
1 Suction opening
2 Pressure opening
3 Liquid ring
Fig. 6 Functional principle of liquid ring vacuum pumps
The arrangement of suction and pressure openings in the inter
casing allows for the suction, compression and discharge of gas.
The liquid both serves the sealing between the individual impel-
ler chambers and the absorption of heat produced during com-
pression.
The vacuum pump must be permanently supplied with operating
liquid during operation as a portion of the liquid continuously
escapes from the pump together with the gas. The discharged
operating liquid can be separated from the gas by means of a
downstream separator and re-used.
3.4 Shaft sealing
3.4.1 Mechanical seal
Mechanical seals may slightly leak for functional reasons.
• Single mechanical seal, unbalanced, dependent on the
direction of rotation (standard)
• Double-acting mechanical seal, unbalanced, independent of
the direction of rotation
• Special seals
3.4.2 Packing gland
Packing glands slightly leak for functional reasons.

Operating Instructions
10/2010 1096.0799 | VU / VH Series 11
4 Transport, storage and
disposal
The following accident prevention regulations have to be
observed prior to following transport and handling regula-
tions:
BGV D8 winches, lifting and pulling devices
BGV D6 load lifting devices
4.1 Transport
Observe weight data (Weight, page 39)
4.1.1 Unpacking and inspection on delivery
1. Unpack the pump/aggregate on delivery and inspect it for
transport damage.
2. Report any transport damage to the manufacturer immedi-
ately.
3. Dispose of packaging material according to local regula-
tions.
4.1.2 Manual transport
CAUTION
Risk of injuries caused by lifting heavy loads!
Observe the permissible weights for lifting and carrying machine
components.
Type Sex Age Rate per shift
rarely
< 5%
repeat-
edly
5 - 10%
fre-
quently
> 10 -
35%
[Years] [kg] [kg] [kg]
Lifting Men – 16
17 - 19
20 - 45
> 45
20
35
55
50
13
25
30
25
-
20
25
20
Lifting Women - 16
17 - 19
20 - 45
> 45
13
13
15
13
9
9
10
9
-
8
9
8
Carrying Men - 16
17 - 19
20 - 45
> 45
20
30
50
40
13
20
30
25
-
15
20
15
Carrying Women - 16
17 - 19
20 - 45
> 45
13
13
15
13
9
9
10
9
-
8
9
8
Lifting
and
carrying
Expectant
mothers
10 (5)
(legal
draft)
5
(legal
draft)
Source: Bavarian State Office for Occupational Safety, Occu-
pational Medicine and Safety Technology
Tab. 6 Maximum weights for manual lifting
►Suitable lifting gear and means of transport must be used
for components exceeding the max. weights!
4.1.3 Transport with lifting gear
DANGER
Risk of death or contusions from falling goods to be trans-
ported!
►Select lifting gear in accordance with the total weight to be
transported.
►Transport the pump/aggregate in horizontal position only.
►Never suspend the pump/aggregate to the free shaft end or
the ring lug of the motor.
►Attach the lifting gear in accordance with the following
figures.
►Do not stand under suspended loads.
max.
90°
Fig. 7 Attaching lifting gear to the pump
max.
90°
Abb. 8 Attaching lifting gear to the aggregate
►Lift the pump/aggregate accordingly.

Operating Instructions
12 1096.0799 | VU / VH Series 10/2010
4.2 Storage
Pumps/aggregates treated by the factory have been provided
with an anticorrosive coating. When properly stored indoors, the
pump/aggregate is protected for a maximum of 3 months. In
case of longer storage periods, the pump/aggregate has to be
treated with a preserving agent again (4.3 Preservation).
For storing pumps/aggregates which have already been in use,
the preparations specified in Paragraph 4.3 Preservation must
be made.
Applied preserving agents (page 45)
CAUTION
Risk of material damage caused by improper storage!
►Store the pump/aggregate accordingly.
1. Close all openings with blank flanges, plugs or plastic
covers.
2. Make sure the storage room meets the following conditions:
dry
frost-free
vibration-free
protected
constant humidity
3. Turn the pump shaft once per month.
4. Make sure the pump shaft and bearing change their rota-
tional position in this process.
4.3 Preservation
Not necessary for rust-proof material
CAUTION
Risk of material damage caused by improper preservation!
►Properly apply preserving agent to the inside and outside of
the pump.
1. Select a preserving agent in accordance with the type and
duration of storage (page 45)
2. Use preserving agents in accordance with the manufac-
turer's specifications.
3. Coat all bare metal components positioned inside and
outside the pump with preserving agent.
4. Treat the impeller gap with a preserving agent.
4.3.1 Preservation inside the system
CAUTION
Risk of material damage caused by improper preservation!
►Shut down the aggregate (Shut down, page 20)
Use appropriate collecting trays, position of drainage bores
(Ue, Ue1) (Dimension drawings, page 46 et seq.)
• Unscrew the screw plugs of all drainage bores (Ue, Ue1).
• Drain the operating liquid (water).
• Occasionally rotate the pump shaft/motor shaft towards the
direction of rotation of the pump.
• Continue with this process until no more liquid escapes.
• Plug all drainage bores with screw plugs.
• Remove the pipes from the suction, pressure and process
water connections.
• Plug the outlet nozzle and the process water connection by
means of blank flanges/screw plugs.
• Fill in preserving agent into the open inlet nozzle. Observe
the filling volumes.
(Filling volumes for preservation, page 45).
• Plug the inlet nozzle with a blank flange.
• Switch the aggregate shortly on and off to allow for a proper
distribution of the preserving agent.
• Unscrew the screw plugs of all drainage bores (Ue) and the
operating liquid connection (UB).
• Drain the preserving agent into collecting trays.
• Occasionally rotate the pump shaft/motor shaft towards the
direction of rotation of the pump.
• Continue with this process until no more preserving agent
escapes.
• Close the suction, pressure and operating liquid connection
(UB) using transport or sealing covers.
• Plug all drainage bores (Ue, Ue1) with screw plugs.
4.3.2 Preservation outside the system
CAUTION
Risk of material damage caused by improper preservation!
►Shut down the aggregate (Shut-down, page 20; Return to
manufacturer, page 22)
Use appropriate collecting trays, position of drainage bores
(Ue, Ue1) (Dimension drawing, page 46)
• Plug all drainage bores (Ue, Ue1) with screw plugs.
• Close the operating liquid connection (UB) using blank
flanges/screw plugs.
• Fill in preserving agent into the open inlet or outlet nozzle
until the agent becomes visible. Observe the filling volumes
(Filling volumes for preservation, page 45).
• Occasionally rotate the pump shaft/motor shaft towards the
direction of rotation of the pump.
• Continue this process until the preserving agent appears
approx. 30 mm below the upper edge of the inlet/outlet
nozzle.
• Unscrew the screw plugs of all drainage bores (Ue) and the
operating liquid connection (UB).
• Drain the preserving agent into collecting trays.
• Occasionally rotate the pump shaft/motor shaft towards the
direction of rotation of the pump.
• Continue with this process until no more preserving agent
escapes.
• Close the suction, pressure and operating liquid connection
(UB) using transport or sealing covers.
• Plug all drainage bores (Ue, Ue1) with screw plugs.

Operating Instructions
10/2010 1096.0799 | VU / VH Series 13
4.4 Removing preserving agent
Only required for treated pumps/aggregates.
CAUTION
Risk of bearing damage caused by excessive water pres-
sure or splash water!
►Do not treat bearing areas with water or steam jet.
CAUTION
Risk of seal damage caused by improper cleaning agents!
►Ensure that cleaning agents do not harm the seals.
1. Use cleaning agents which are appropriate for your respec-
tive application.
2. Rinse off preserving agent and collect it together with the
rinsing agent.
3. Dispose of preserving agent according to local regulations.
4. For storage periods exceeding 6 months:
Replace elastomer components made of EP rubber
(EPDM).
Check all elastomer components (O-rings, shaft seal-
ings) for proper elasticity and replace if required.
4.5 Disposal
WARNING
Risk of intoxication and environmental damage caused by
media to be pumped!
►Prior to disposing the pump/aggregate:
Collect escaping media to be pumped and dispose of
separately in accordance with local regulations.
Neutralize residues of media to be pumped in the
pump/aggregate.
Remove preserving agent (page 13)
Disassemble plastic parts and dispose of in accor-
dance with local regulations.
►Assign an authorized company to dispose of the
pump/aggregate to prevent the risk of environmental dam-
age!

Operating Instructions
14 1096.0799 | VU / VH Series 10/2010
5 Set-up and connection
For pumps/aggregates in potentially explosive areas
(ATEX additional instructions)
CAUTION
Risk of material damage caused by contamination!
►Do not remove transport locks until immediately before
setting up the pump/aggregate.
►Do not remove covers, transport and sealing caps until
immediately before connection of the pipes to the
pump/aggregate.
5.1 Preparing set-up
5.1.1 Checking ambient conditions
►Make sure the required ambient conditions are maintained
(Ambient conditions, page 41).
►For pump/aggregate set-up at an altitude of > 1000 m
above sea level, consult the manufacturer.
5.1.2 Minimum clearances for heat dissipation
Minimum clearances (Clearances for heat dissipation,
page 41).
5.1.3 Preparing installation site
►Make sure the installation site meets the following condi-
tions:
the pump/aggregate is freely accessible from all sides
sufficient space for installing/disassembling the pipes
as well as for maintenance and repair works, particu-
larly for installation/disassembly of the pump/aggregate
and the motor, is provided for.
the pump/aggregate is not exposed to external vibra-
tions (bearing damage)
frost protection
5.1.4 Preparing foundation and surface
Set-up options:
with concrete foundation
with steel foundation frame
without foundation
►Make sure foundation and surface meet the following condi-
tions:
level
clean (free of oil, dust or other contaminations)
load carrying capacity is in accordance with the dead
weight of the aggregate and all operating forces
adequate aggregate stability
with concrete foundation: standard concrete of strength
class B 25
5.1.5 Removing preserving agent
►If the pump/aggregate is commissioned directly after set-up
and connection: remove preserving agent prior to set-up (
Removing preserving agent, page 13).
5.2 Set-up with foundation
Only possible with base plate.
CAUTION
Risk of material damage caused by distortion of the base
plate!
►Position and fix the base plate on the foundation as follows.
5.2.1 Placing aggregate on foundation
Auxiliary means, tools, material:
foundation bolts (Set-up drawing)
steel washers
non-shrinking mortar grout
spirit level
1. Lift the aggregate (Transport, page 11).
2. Hook the foundation bolts from below into the base plate
fixing holes.
Observe the manufacturer's specifications when using
adhesive anchors.
3. Place the aggregate on the foundation.
Insert the foundation bolts into the provided anchoring
holes.
32 1 2
Fig. 9 Set-up with foundation
4. Use steel washers to align the aggregate to height and
system dimensions as follows:
Place 1 steel washer (2) at the left and right hand side
of each foundation bolt (1).
With > 750 mm clearances between the anchoring
holes, an additional steel washer (3) must be posi-
tioned in the middle of each side of the base plate.
5. Make sure the steel washers are in surface contact with the
base plate.
6. Use the integrated spirit level to check whether the aggre-
gate is level end to end and side to side with a maximum al-
lowable tilt of 1 mm/m.
7. Repeat this process until the base plate has been correctly
aligned.
5.2.2 Fixing aggregate
Filling the base plate with mortar grout improves the damp-
ening behaviour.
1. Fill the anchoring holes with mortar grout.
2. When the mortar grout has set, bolt down the base plate
with the specified torque at three points (Tightening
torques, page 42).
3. Before tightening the remaining bolts, compensate for any
unevenness in the surface using metal spacing shims next
to each bolt.
4. Make sure the base plate is not distorted.

Operating Instructions
10/2010 1096.0799 | VU / VH Series 15
5.3 Set-up without foundation
With base plate
Auxiliary means, tools, material:
wrench
spirit level
1
2
3
1 Hexagon nut
2 Hexagon nut
3 Levelling foot
Fig. 10 Set-up without foundation
1. Lift the base plate with the aggregate
(Transport with lifting gear, page 11).
2. Mount the four levelling feet as illustrated.
3. Position the aggregate on the surface.
4. Adjust the base plate height by means of the levelling feet
as illustrated above:
Use the wrench to hold the hexagon nut at the levelling
foot (3).
Loosen the hexagon nut (1).
The height can be adjusted by turning the hexagon nut
(2).
Tighten the hexagon nut (1) (Tightening torques,
page 42).
Use the integrated spirit level to check whether the ag-
gregate is level end to end and side to side with a
maximum allowable tilt of 1 mm/m.
Repeat this process until the base plate has been cor-
rectly aligned.
5.4 Set-up on torsion-resistant level
surface/frame
Only possible with motor feet
Auxiliary means, tools, material:
wrench
1
1 Surface/frame
Fig. 11 Set-up on level surface/frame
1. Mount the motor feet as illustrated (Dimension drawing,
page 46 et seq.).
2. Position the aggregate on a torsion-resistant level sur-
face/frame.
3. Screw the aggregate to the surface/frame.
5.5 Motor installation
Only necessary if aggregate set-up is completed at the
installation site.
CAUTION
Risk of material damage caused by knocks and bumps!
►Do not tilt the coupling halves when slipping them on.
►Do not knock on or hit any pump components.
1. Apply a razor-thin layer of molybdenum disulfide
(e.g. Molykote®) on the pump and motor shaft.
2. Insert fitting keys (if required).
3. Without mounting rig:
Remove the rubber buffers
Heat the coupling halves to approx. 100 °C
4. Slip on the pump and motor-side coupling halves until the
shaft end is flush with the coupling hub.
Make sure to keep the required clearance between the
coupling halves (Fine adjustment of coupling, page
16).
5. Tighten the grub screws on both coupling halves.
6. Lift the motor and put it down on the base plate.
7. Adjust the motor shaft to the height of the pump shaft using
suitable shims for the motor.
8. Screw in and slightly tighten the motor screws.
5.6 Planning pipe system
5.6.1 Dimensioning supports and connections
CAUTION
Risk of material damage if the pipes apply excessive forces
and torques to the pump/aggregate!
►Make sure the permissible values are complied with
(DIN ISO 9908).
1. Calculate the piping forces and observe all operating condi-
tions:
cold/warm
empty/filled
depressurized/pressurized
position changes
2. Make sure the pipe supports have permanent low-friction
properties and do not seize up due to corrosion.
3. If required, provide for pipe compensators.
5.6.2 Specifying nominal diameter
Size of suction/pressure connections
(Operating connections, page 41)
►Keep the flow resistance in the pipes as low as possible.
1. Nominal suction pipe diameter ≥nominal suction connec-
tion diameter
2. Nominal pressure pipe diameter ≥nominal pressure con-
nection diameter.

Operating Instructions
16 1096.0799 | VU / VH Series 10/2010
5.6.3 Specifying pipe lengths
1. Dimension the suction, pressure and operating liquid pipes
as short as possible.
2. Increase the pipe cross-sections when using long suction,
pressure and operating liquid pipes.
The pressure pipe must not rise more than 1 m vertically or
diagonally upwards.
5.6.4 Changes in cross-section and direction
1. Avoid radii of curvature of less than 1.5 times the nominal
pipe diameter.
2. Avoid sudden changes of cross-section and direction along
the piping.
5.6.5 Safety and control devices
5.6.5.1 Avoiding contamination
1. Integrate low-resistance filters in the suction pipe.
2. Install a differential pressure gauge with contact manome-
ter to monitor the contamination process.
5.6.5.2 Avoiding backflow
►Install a ball check valve between the suction pipe and the
suction connection of the aggregate to prevent operating
liquid from flowing back into the suction pipe after aggre-
gate shut-down.
5.6.5.3 Provisions for isolating and shutting off pipes
For maintenance and repair works
►Provide for shut-off devices in the suction, pressure and
process water pipes.
5.6.5.4 Provisions for measuring operating conditions
1. For pressure measuring: provide for manometers in the
suction and pressure pipe.
2. Provide for a power sensor at the motor side.
5.7 Connecting pipes
5.7.1 Providing for clean piping
CAUTION
Risk of material damage caused by pump/aggregate con-
tamination!
►Make sure contamination does not enter the
pump/aggregate.
1. Clean all piping parts and fittings prior to assembly
2. Make sure no flange seals project inwards.
3. Make sure no sealing material (sealing tape, adhesive)
projects inwards.
4. Remove any blank flanges, plugs, protective foils and/or
protective paint from the flanges.
5.7.2 Installing suction pipe
1. Remove the transport and sealing covers from the
pump/aggregate.
2. Avoid air pockets: lay out the pipes with a continuous slope
down to the aggregate.
3. Make sure no seals project inwards.
4. Make sure no sealing material (sealing tape, adhesive)
projects inwards.
5. Install a ball check valve in the suction pipe to prevent
operating liquid from flowing into the suction pipe at stand-
still.
5.7.3 Installing pressure pipe
1. Remove the transport and sealing covers from the
pump/aggregate.
2. Install the pressure pipe.
3. The pressure pipe must not rise more than 1 m vertically or
diagonally upwards.
4. Avoid air pockets: lay out the pipes with a continuous slope
from the aggregate.
5. Make sure no seals project inwards.
6. Make sure no sealing material (sealing tape, adhesive)
projects inwards.
5.7.4 Stress-free pipe connection
For the layout of piping, observe VDMA standard sheet
24277 on stress-free pipe connections.
5.8 Fine adjustment of coupling
CAUTION
Risk of material damage caused by improper coupling ad-
justment!
►Accurately adjust the motor to the pump in case of height,
lateral or angular offset.
►For detailed information and special couplings:
(Manufacturer's specifications).
5.8.1 Checking coupling adjustment
Auxiliary means, tools, material:
feeler gauge
straightedge
dial gauge (possible with couplings with spacer)
other suitable tools, e.g. laser adjustment tool
2
B
B
A
A
S
S
1
1 Gauge
2 Straightedge
Fig. 12 Checking coupling adjustment

Operating Instructions
10/2010 1096.0799 | VU / VH Series 17
Coupling guard has been disassembled.
1. Take the measurements at the circumference of the cou-
pling in two planes with a 90° offset.
2. Check the light gap towards the outer diameter using a
straightedge (1):
Position the straightedge over both coupling halves.
Adjust the motor if you detect a light gap at the outer
diameter (Motor adjustment, page 17).
3. Check the gap size using a feeler gauge (2):
Permissible gap size (Dimension drawing, page 46
et seq.).
Use a feeler gauge to measure the gap (A) between
the coupling halves.
If the measured gap size is impermissible, adjust the
motor (Motor adjustment, page 17).
4. Install the coupling guard.
5.9 Motor adjustment
1. Adjust the motor in a way which ensures that the coupling
halves are accurately aligned and use adjustment shims if
required.
2. Check the motor adjustment.
3. Repeat the adjustment process if height or angular offset
have not yet been fully compensated.
4. Then, tighten the motor screws.
5.10 Electrical connection
RISK OF ELECTRIC SHOCK
Risk of death from electric shock!
►Any electrical works must be carried out by qualified electri-
cians only.
►Observe the IEC 30364 (DIN VDE 0100) and for potentially
explosive areas the IEC 60079 (DIN VDE 0165) standard.
DANGER
Risk of death from rotating parts!
►Make sure to only operate the aggregate with all covers
(fan hood) installed.
5.10.1 Motor connection
Observe the manufacturer's specifications for the motor.
1. Connect the motor in accordance with the circuit diagram.
2. Exclude any risk associated with electric power.
3. Install an Emergency-Stop button.
5.10.2 Checking direction of rotation
DANGER
Risk of death from rotating parts!
►Use protective equipment when carrying out any works on
the aggregate.
►Keep an adequate distance to rotating parts.
CAUTION
Risk of material damage caused by dry running or incorrect
direction of rotation!
►Pump filled with operating liquid up to the middle of the
shaft (Filling, page 18).
1. Switch the aggregate on and immediately off again.
2. Check whether the direction of rotation of the motor is in
accordance with the arrow indicating the direction of rota-
tion on the aggregate.
Wrong direction of rotation may result in damage and es-
cape of operating liquid at the mechanical seal.
RISK OF ELECTRIC SHOCK
Risk of death from electric shock!
►Any electrical works must be carried out by qualified electri-
cians only.
►Observe the IEC 30364 (DIN VDE 0100) and for potentially
explosive areas the IEC 60079 (DIN VDE 0165) standard.
3. In case of deviating direction of rotation: Swap the two
phases.

Operating Instructions
18 1096.0799 | VU / VH Series 10/2010
6 Operation
For pumps/aggregates in potentially explosive areas
(ATEX additional instructions)
6.1 Preparations for commissioning
6.1.1 Identifying pump type
►Identify the pump/aggregate type (Nameplate, page 9).
Pump/aggregate types vary, e.g. with regard to material,
suction capacity, type of shaft sealing, auxiliary operating
systems.
6.1.2 Removing preserving agent
Only required for treated pump.
►Remove preserving agent (Removing preserving agent,
page 14).
6.1.3 Checking shut-down period
►Shut-down periods > 1 year: contact the manufacturer and
ask for required measures.
►Shut-down periods < 1 year: take all steps as required for
commissioning (Commissioning, page 18).
6.1.4 Filling
1. Remove the screw plug from port UV(Dimension draw-
ing, page 46 et seq.).
2. Fill the pump with operating liquid maximally up to the
middle of the shaft.
3. When operating liquid escapes from port UV, stop the filling
process.
4. Screw the screw plug into port UV
(Dimension drawing, page 46 et seq.).
5. Open the suction-side fitting.
6. Open the pressure-side fitting.
7. Make sure all ports and connections are tight.
6.2 Commissioning
6.2.1 Switch-on
Aggregate correctly set up and connected
Motor correctly connected
Coupling adjustment checked
All connections stress-free and sealed
If available: auxiliary operating systems ready for op-
eration
All safety devices installed and checked for proper
functioning
Pump/aggregate properly prepared and filled
DANGER
Risk of injuries caused by running aggregate!
►Do not touch the running aggregate.
►Do not carry out any works on the running aggregate.
RISK OF ELECTRIC SHOCK
Risk of death from electric shock!
►Any electrical works must be carried out by qualified electri-
cians only.
►Observe the IEC 30364 (DIN VDE 0100) and for potentially
explosive areas the IEC 60079 (DIN VDE 0165) standard.
WARNING
Risk of injuries caused by vacuum or harmful media to be
pumped and operating liquid!
Use protective equipment when carrying out any works on the
pump/aggregate.
CAUTION
Risk of material damage caused by dry running!
►Make sure the pump has been properly filled.
CAUTION
Risk of cavitation when throttling down the suction flow!
Risk of cavitation when the fitting in the suction pipe is
closed!
►Completely open the suction-side fitting and do not use it
for controlling the flow rate.
►Open the pressure-side fitting.
CAUTION
Risk of material damage caused by a closed pressure pipe!
►Do not operate the aggregate when the pressure-side fitting
is closed.
►Observe the max. permissible operating limits (Operating
limit values, page 36).
max. permissible pressure difference
max. permissible compression pressure
max. permissible operating liquid temperature
max. permissible operating liquid viscosity
max. permissible operating liquid density
max. permissible temperature of the medium to be
pumped
1. Open the pressure-side fitting.
2. Ventilation port (if available): open the fitting.
3. Switch on the motor.
4. Operating liquid: open the fitting.
5. Open the suction-side fitting.
6. Ventilation port (if available): Close the fitting as soon as
the motor has reached its nominal speed.
7. Provide for a smooth running behaviour of the aggregate.
8. Check the aggregate and connections for tightness.

Operating Instructions
10/2010 1096.0799 | VU / VH Series 19
6.2.2 Switch-off
WARNING
Risk of injuries caused by vacuum or harmful media to be
pumped and operating liquid!
►Use protective equipment when carrying out any works on
the aggregate.
1. Operating liquid: close fitting.
2. Switch off the motor.
3. Ventilation port (if available): open the fitting.
4. Check all connecting screws and tighten them if required
(only after initial commissioning).
CAUTION
Risk of aggregate damage resulting from vacuum condition!
►Aerate the aggregate during switch-off.
►Do not leave the aggregate under vacuum.
If the aggregate is not aerated, the mechanical seals will be
subject to damage.
6.3 Setting the operating liquid flow
rate
6.3.1 Continuous-flow cooling
►Switch on the aggregate.
►Set the pressure in the operating liquid pipe to max. 0.2 bar
overpressure (Diagram Fig. 13)
L
PIC
01
F
A
D
S
Fig. 13 Continuous-flow cooling
6.3.2 Open circulation cooling
►Switch on the aggregate.
Set the pressure in the operating liquid pipe to max. 0.2 bar
overpressure (Diagram Fig. 14, 15, 16)
L
PIC
01
F
A
U
D
S
Fig. 14 Open circulation cooling
LF
A
U
D
S
PIC
01
TIC
02
Fig. 15 Open circulation cooling with temperature control
L
A
D
S
LIC
03
U
F
Fig. 16 Open circulation cooling with controlled liquid feed
►Observe the permissible operating liquid temperature
(Operating liquid, page 39)

Operating Instructions
20 1096.0799 | VU / VH Series 10/2010
6.3.3 Closed circulation cooling
►Switch on the aggregate.
►Set the pressure in the operating liquid pipe to a value
which is 0.1 bar smaller than the compression pressure
(Diagram Fig. 17)
L
RK
U
A
D
S
VK
F
PIC
01
TIC
02
Fig. 17 Closed circulation cooling
►Observe the permissible operating liquid temperature
(Operating liquid, page 39)
Pos. Meaning
SSuction connection
LVentilation port
DPressure connection
AOverflow
UCirculation liquid
FFresh liquid
VK Feed-in cooling agent
RK Return cooling agent
TIC Temperature
PIC Pressure
LIC Filling level
Tab. 7 Legend of symbols
6.4 Decommissioning
WARNING
Risk of injuries caused by vacuum or harmful media to be
pumped and operating liquid!
►Use protective equipment when carrying out any works on
the pump/aggregate.
►Reliably collect escaping media to be pumped and dispose
of in an environmentally-friendly way.
Implement the following measures when taking the
pump/aggregate out of operation:
Pump/
aggregate is Measure
shut down while
remaining ready
for operation
►Shortly operate (approx. 5 minutes)
the aggregate at intervals of at least
one month but not exceeding three
months (Commissioning, page 18).
shut down for a
longer period of
time
►Implement measures in accordance
with the condition of the operating
liquid.
(Tab.9 Measures depending on
the behaviour of the operating liquid)
drained ►Close all fittings.
disassembled ►Disconnect the motor from the
power supply and secure it against
unauthorized switch-on.
stored ►Observe the measures to be imple-
mented for storage
(Storage, page 12).
Tab. 8 Measures to be taken when putting the pump out of
operation
Operat-
ing
liquid
Duration of shut-down
(process-dependent)
Short Long
Water ►Drain
pump/aggregate
and separator.
►Drain
pump/aggregate
and separator.
►Treat pump/
aggregate with a
preserving agent
(Preservation,
page 12)
Other
media
- ►Drain pump/
aggregate and
separator.
►Treat pump/
aggregate with a
preserving agent
(Preservation,
page 12).
Tab. 9 Measures depending on the behaviour of the operating
liquid
6.5 Re-commissioning
Shut-down periods > 1 year:
1. Prepare commissioning
(Preparations for commissioning, page 18).
2. Perform commissioning procedures
(Commissioning, page 18).
3. Monitor the aggregate following commissioning
(Monitoring, page 21).
6.6 Operating stand-by aggregate
Stand-by aggregate filled
Operate the stand-by aggregate at least once per week.