Allweiler CNH-M Series User manual

Centrifugal Pump with
Volute Casing
Original Operating Manual CNH-M series
Version BA-2010.03
Print-No. 550 267
VM-No. 460.0019 GB
ALLWEILER AG • Werk Radolfzell
Postfach 1140
Allweilerstr. 1
78301 Radolfzell
Germany
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Internet: http://www.allweiler.com
We reserve the right to make technical changes.

Table of contents
Table of contents
1 About this document ............................... 5
1.1 Target groups ................................. 5
1.2 Other applicable documents ................ 5
1.3 Warnings and symbols ....................... 6
1.4 Technical terms ............................... 6
2 Safety ................................................. 7
2.1 Intended use .................................. 7
2.2 General safety instructions .................. 7
2.2.1 Product safety ................................ 7
2.2.2 Obligations of the operating company . ..... 8
2.2.3 Obligations of personnel ..................... 8
2.3 Specific hazards .............................. 8
2.3.1 Explosion-hazard area ....................... 8
2.3.2 Hazardous pumped liquids .................. 8
2.3.3 Magnetic field ................................. 8
3 Layout and function ................................ 9
3.1 Label .......................................... 9
3.1.1 Type plate ..................................... 9
3.1.2 ATEX plate .................................... 9
3.1.3 Pump type code .............................. 9
3.2 Layout ......................................... 10
3.3 Auxiliary operating systems ... . . .. . .. .. .. . . . 11
3.3.1 Heating ........................................ 11
4 Transport, storage and disposal .................. 12
4.1 Transport ...................................... 12
4.1.1 Unpacking and inspection on delivery . .. . .. 12
4.1.2 Lifting .......................................... 12
4.2 Treatment for storage ........................ 13
4.3 Storage ....................................... 13
4.4 Removing preservative ...................... 14
4.5 Disposal ....................................... 14
5 Setup and connection .............................. 15
5.1 Preparing the setup .......................... 15
5.1.1 Checking the ambient conditions .. . .. .. . .. . 15
5.1.2 Preparing the installation site ............... 15
5.1.3 Preparing the foundation and surface ...... 15
5.1.4 Removing preservative ...................... 15
5.1.5 Installing heat insulation (optional) .......... 15
5.2 Installation on a foundation .................. 16
5.2.1 Placing the pump unit on the
foundation .................................... 16
5.2.2 Fastening the pump unit ..................... 17
5.3 Setup without foundation .................... 17
5.4 Installing the motor ........................... 18
5.5 Planning the piping ........................... 18
5.5.1 Specifying supports and flange
connections ................................... 18
5.5.2 Specifying nominal diameters .. .. . .. .. . . . .. . 18
5.5.3 Specifying pipe lengths ...................... 18
5.5.4 Optimizing cross-section and direction
changesv ..................................... 18
5.5.5 Discharging leaks ............................ 18
5.5.6 Providing safety and control devices
(recommended) .............................. 19
5.6 Connecting the pipes ........................ 19
5.6.1 Keeping the piping clean .................... 19
5.6.2 Installing auxiliary piping ..................... 19
5.6.3 Installing the suction pipe .................... 19
5.6.4 Installing the pressure pipe .................. 19
5.6.5 Inspection for stress-free pipe
connections ................................... 20
5.6.6 Inspecting the support foot for
distortion ...................................... 20
5.7 Electrical connection ......................... 20
5.7.1 Connecting the motor ........................ 20
5.7.2 Checking the sense of rotation .............. 20
5.8 Aligning the coupling precisely .............. 21
5.9 Aligning the motor ............................ 22
5.9.1 Aligning the motor with sets of shims ... .. . . 22
5.9.2 Aligning the motor with adjusting
screws ........................................ 22
5.10 Installing the coupling guard ................ 22
6Operation............................................ 23
6.1 Preparations for the initial start-up .. . .. . . . .. 23
6.1.1 Identifying the pump type .................... 23
6.1.2 Removing preservative ...................... 23
6.1.3 Lubricating the bearings ..................... 23
6.1.4 Preparing auxiliary systems (if
available) ..................................... 24
6.1.5 Filling and bleeding .......................... 24
6.2 Start-up ....................................... 24
6.2.1 Switching on .................................. 24
6.2.2 Switching off .................................. 25
6.3 Shutting down the pump ..................... 25
6.4 Start-up following a shutdown period ... .. .. 26
6.5 Operating the stand-by pump ............... 26
7 Maintenance ......................................... 27
7.1 Inspections ................................... 27
7.2 Maintenance .................................. 28
7.2.1 Antifriction bearings lubricated with
grease ......................................... 28
7.2.2 Antifriction bearings lubricated with oil .. . .. 28
7.2.3 Cleaning the pump ........................... 28
7.3 Dismounting .................................. 29
7.3.1 Returning the pump to the
manufacturer ................................. 30
7.3.2 Preparations for dismounting ................ 30
7.4 Installing ...................................... 31
7.5 Ordering spare parts ......................... 31
8 Troubleshooting .................................... 32
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Table of contents
9 Appendix ............................................. 35
9.1 Sectional drawings ........................... 35
9.1.1 Auxiliary connections ........................ 35
9.1.2 Part numbers and designations ............. 35
9.1.3 Overview sectional drawing ................. 37
9.1.4 Coupling guard ............................... 42
9.2 Technical specifications ...................... 43
9.2.1 Ambient conditions ........................... 43
9.2.2 Parameters for auxiliary systems ... .. . .. .. . 43
9.2.3 Sound pressure levels ....................... 43
9.2.4 Tightening torques ........................... 44
9.2.5 Lubricants ..................................... 44
9.2.6 Preservatives ................................. 44
9.2.7 Cleaning agents .............................. 44
9.2.8 Height offset for motor alignment with
adjusting screw ............................... 45
9.2.9 Flange loads according to ISO 5199 . .. . .. . 46
9.3 Spare parts for two years of continuous
operation according to DIN 24296 . . .. .. . .. . 47
9.4 Safety certificate ............................. 49
9.5 Declaration of conformity according to EC
machine directives ........................... 50
460.0019 GB – 550 267 BA-2010.03 CNH-M series 3

Table of contents
List of figures
Fig. 1 Type plate (example) ........................ 9
Fig. 2 ATEX plate (example) ........................ 9
Fig. 3 Pump type code (example) .................. 9
Fig. 4 CNH-M layout (with oil lubrication) .......... 10
Fig. 5 Heating ........................................ 11
Fig. 6 Fastening lifting gear to pump unit .. .. . .. . .. 12
Fig. 7 Fastening the lifting gear to the pump . .. . .. 12
Fig. 10 Installation without foundations ... . .. .. . .. . . 17
Fig. 11 Straight pipe lengths upstream
and downstream of the pump
(recommended) .............................. 18
Fig. 15 Aligning the motor with adjusting
screws ........................................ 22
Fig. 16 Checking the oil level ........................ 23
Fig. 17 CNH-M with oil lubrication, sizes on first and
second bearing brackets .................... 37
Fig. 18 CNH-M with oil lubrication, sizes on third
bearing bracket ............................... 38
Fig. 19 CNH-M with grease lubrication, sizes on first
and second bearing brackets ............... 39
Fig. 20 CNH-M with grease lubrication, sizes on third
bearing bracket ............................... 40
Fig. 21 CNH-M with heating ......................... 41
Fig. 22 Double thrust bearing on first and second
bearing bracket (only for sizes 65-160 and
80-160) ........................................ 42
Fig. 23 Coupling guard on base plate versions .. . .. 42
Fig. 24 Flange loads at the pump ................... 46
Fig. 25 Correction factor M and operating
temperature ................................... 47
List of tables
Tab. 1 Target groups and their duties .............. 5
Tab. 2 Other applicable documents and their
purpose ....................................... 5
Tab. 3 Warnings and consequences of disregarding
them ........................................... 6
Tab. 4 Symbols and their meaning ................. 6
Tab. 5 Technical terms and their meaning ... .. . .. . 6
Tab. 6 Design characteristics ....................... 9
Tab. 7 Measures to be taken if the pump is shut
down .......................................... 26
Tab. 8 Measures depending on the behavior of the
pumped liquid ................................ 26
Tab. 9 Measures to be taken after prolonged
shutdown periods ............................ 26
Tab. 10 Measures for return .......................... 30
Tab. 11 Malfunction/number assignment ............ 32
Tab. 12 Troubleshooting list .......................... 34
Tab. 13 Connection designation abbreviations .. .. .. 35
Tab. 14 Designation of components according to part
numbers ...................................... 36
Tab. 15 Ambient conditions ........................... 43
Tab. 16 Operating parameters for heating
chamber ...................................... 43
Tab. 17 Sound pressure levels ....................... 43
Tab. 18 Tightening torques ........................... 44
Tab. 19 Minimum oil lubrication quantities . . . .. .. . . . . 44
Tab. 20 Valvoline preservatives ...................... 44
Tab. 21 Cleaning agents .............................. 44
Tab. 22 Height setting at the adjusting screw .. . .. .. 45
Tab. 23 Flange loads .................................. 46
Tab. 24 Spare parts for two years of continuous
operation ...................................... 48
Tab . 2 5 Sa fe t y c e rt ificate ............................. 49
Tab. 26 Declaration of conformity according to EC
machine directives ........................... 50
4 CNH-M series BA-2010.03 460.0019 GB – 550 267

About this document
1 About this document
This manual:
• ispartofthepump
• applies to the pump series mentioned above
• describes safe and appropriate operation at all operating
phases
1.1 Target groups
Target group Duty
Operating company Keep this manual available at the site of operation of the equipment,
including for later use.
Ensure that personnel read and follow the instructions in this
manual and the other applicable documents, especially all safety
instructions and warnings.
Observe any additional rules and regulations referring to the
system.
Qualified personnel, fitter Read, observe and follow this manual and the other applicable
documents, especially all safety instructions and warnings.
Tab. 1 Target groups and their duties
1.2 Other applicable documents
Document Purpose
ATEX additional instructions Operation in explosion-hazard areas
Order data sheet Technical specifications, conditions of operation
Setup drawing Setup dimensions, connection dimensions etc.
Technical description Technical specifications, operating limits
Sectional drawing Sectional drawing, part numbers, component designations
Supplier documentation Technical documentation for parts supplied by subcontractors
Spare parts list Ordering spare parts
Declaration of conformity Conformity with standards
Contents of the declaration of conformity (→9.5 Declaration of
conformity according to EC machine directives, Page 50).
Tab. 2 Other applicable documents and their purpose
460.0019 GB – 550 267 BA-2010.03 CNH-M series 5

About this document
1.3 Warnings and symbols
Warning Risk level Consequences of disregard
DANGER Immediate acute risk Death, serious bodily harm
WARNING Potentially acute risk Death, serious bodily harm
CAUTION Potentially hazardous situation Minor bodily harm
NOTE Potentially hazardous situation Material damage
Tab. 3 Warnings and consequences of disregarding them
Symbol Meaning
Safety warning sign
Take note of all information highlighted by the safety warning sign
and follow the instructions to avoid injury or death.
Instruction
1. , 2. , ... Multiple-step instructions
9Precondition
→Cross-reference
Information, recommendation
Tab. 4 Symbols and their meaning
1.4 Technical terms
Term Meaning
Sealing medium Medium for blocking or quenching shaft seals
Auxiliary operating systems Systems for operating the pump
Tab. 5 Technical terms and their meaning
6 CNH-M series BA-2010.03 460.0019 GB – 550 267

Safety
2Safety
The manufacturer does not accept any liability for damage
resulting from disregard of the entire documentation.
2.1 Intended use
• Only use the pump to pump the agreed pumped liquids
(→order data sheet).
• Adhere to the operating limits and size-dependent
minimum flow rate.
• Avoid dry running:
Initial damage, such as destruction of seals and plastic
parts, will occur within only a few seconds.
– Make sure the pump is only operated with, and never
without, pumped liquid.
• Avoid cavitation:
– Fully open the suction-side fitting and do not use it to
adjust the flow.
– Do not open the pressure-side fitting beyond the
agreed operating point.
• Avoid overheating:
– Do not operate the pump while the pressure-side fitting
is closed.
– Observe the minimum flow rate (→order data sheet).
• Avoid damage to the motor:
– Do not open the pressure-side fitting beyond the
agreed operating point.
– Note the maximum permissible number of times the
motor can be switched on per hour (→manufacturer's
specifications).
• Consult the manufacturer about any other use of the pump.
• When a pump is delivered without a motor, the pump unit
must be completed in accordance with the stipulations of
machine directive 2006/42/EC.
Prevention of obvious misuse (examples)
• Note the operating limits of the pump with regard to
temperature, pressure, flow rate and motor speed (→order
data sheet).
• The power consumed by the pump increases with
increasing specific gravity of the pumped medium. To
avoid overloading the pump, coupling or motor, stay within
the agreed density (→order data sheet).
Lower densities are allowed. Adapt the auxiliary systems
accordingly.
• When pumping liquids containing solids, ensure the
limits for the proportion of solids and the grain size are
maintained (→order data sheet, technical description).
• When using auxiliary systems, ensure there is a continuous
supply of the appropriate operating medium.
• Pumps used with water as the pumped liquid must not be
used for foodstuffs or drinking water. Use of the pump for
foodstuffs or drinking water must be specified in the order
data sheet.
• Only select the setup type according to this operating
manual. For example, the following are not allowed:
– Hanging base plate pumps in the pipe
– Overhead installation
– Installation in the immediate vicinity of extreme heat or
cold sources
– Installation too close to the wall
2.2 General safety instructions
Observe the following regulations before carrying out any
work.
2.2.1 Product safety
The pump has been constructed according to the
latest technology and recognized technical safety rules.
Nevertheless, operation of the pump can still put the life and
health of the user or third parties at risk or damage the pump
or other property.
• Only operate the pump if it is in perfect technical condition
and only use it as intended, staying aware of safety and
risks, and in adherence to the instructions in this manual.
• Keep this manual and all other applicable documents
complete, legible and accessible to personnel at all times.
• Refrain from any procedures and actions that would pose
a risk to personnel or third parties.
• In the event of any safety-relevant malfunctions, shut down
the pump immediately and have the malfunction corrected
by appropriate personnel.
• In addition to the entire documentation for the product,
comply with statutory or other safety and accident-
prevention regulations and the applicable standards and
guidelines in the country where the pump is operated.
460.0019 GB – 550 267 BA-2010.03 CNH-M series 7

Safety
2.2.2 Obligations of the operating company
Safety-conscious operation
• Only operate the pump if it is in perfect technical condition
and only use it as intended, staying aware of safety and
risks, and in adherence to the instructions in this manual.
• Ensure that the following safety aspects are observed and
monitored:
– Adherence to intended use
– Statutory or other safety and accident-prevention
regulations
– Safety regulations governing the handling of
hazardous substances
– Applicable standards and guidelines in the country
where the pump is operated
• Make personal protective equipment available.
Qualified personnel
• Make sure all personnel tasked with work on the pump
have read and understood this manual and all other
applicable documents, especially the safety, maintenance
and repair information, before they start any work.
• Organize responsibilities, areas of competence and the
supervision of personnel.
• Have all work carried out by specialist technicians only:
– Fitting, repair and maintenance work
– Work on the electrical system
• Make sure that trainee personnel only work on the pump
under supervision of specialist technicians.
• Persons who have an implanted pacemaker
– must stay away from the pump with magnetic coupling
and parts of the magnetic coupling
– must not work on or with the magnetic parts.
Safety equipment
• Provide the following safety equipment and verify its
functionality:
– For hot, cold and moving parts: safety guarding
provided by the operating company for the pump
– For potential build up of electrostatic charge: ensure
appropriate grounding.
Warranty
• Obtain the manufacturer's approval prior to carrying out
any modifications, repairs or alterations during the warranty
period.
• Only use genuine parts or parts that have been approved
by the manufacturer.
2.2.3 Obligations of personnel
• All directions given on the pump must be followed (and kept
legible), e.g. the arrow indicating the sense of rotation and
the markings for fluid connections.
• Pump, coupling guard and components:
– Do not step on them or use as a climbing aid
– Do not use them to support boards, ramps or beams
– Do not use them as a fixing point for winches or
supports
– Do not use them for storing paper or similar materials
– Do not use hot pump or motor components as a heating
point
– Do not de-ice using gas burners or similar tools
• Do not remove the safety guarding for hot, cold or moving
parts during operation.
• Use personal protective equipment whenever necessary.
• Only carry out work on the pump while it is not running.
• Isolate the motor from its supply voltage and secure it
against being switched back on again prior to any fitting or
maintenance work.
• Reinstall the safety equipment on the pump as required by
regulations after any work on the pump.
• With an implanted pacemaker:
– Stayatleast1mawayfromthepumpwithmagnetic
coupling or parts of the magnetic coupling.
– Do not work with or on the magnetic parts.
2.3 Specific hazards
2.3.1 Explosion-hazard area
•(→ATEX additional instructions).
2.3.2 Hazardous pumped liquids
• Follow the safety regulations for handling hazardous
substances when handling hazardous
(e.g. hot, flammable, poisonous or potentially harmful)
pumped liquids.
• Use personal protective equipment when carrying out any
work on the pump.
2.3.3 Magnetic field
The magnetic field of the magnetic coupling can destroy
products that are sensitive to magnets. These include
• Pacemakers
• Plastic identity cards with magnetic strips
• Credit and check cards
• electric, electronic, fine-mechanical devices (such as
mechanical and digital clocks, pocket calculators, hard
discs)
8 CNH-M series BA-2010.03 460.0019 GB – 550 267

Layout and function
3 Layout and function
3.1 Label
3.1.1 Type plate
NPSHkW1/min P mn
m
3
/h H mQ
Nr Jahr
Typ
mm
2
/skg/dm
3
D - 78315 Radolfzell / Germany
Typ und Nr.
1
2
3
4
56
7
10
9
8
angeben
Bei Ersatzteilbestellung
Fig. 1 Type plate (example)
1Pumptype
2 Year of manufacture
3 Differential head
4 Pump NPSH value
5 Kinematic viscosity
6 Power consumption
7Density
8 Motor speed
9Flowrate
10 Pump number
3.1.2 ATEX plate
Technical File No.:
EX9 03 09 45910 002
II 2 G c b Tx
1
2
Fig. 2 ATEX plate (example)
1 Explosion protection mark
2 Reference to ATEX additional instructions
3.1.3 Pump type code
Fig. 3 Pump type code (example)
1Series
2 Nominal outlet flange diameter [mm]
3 Nominal impeller diameter [mm]
4 Hydraulic number
5 Actual impeller diameter [mm]
6 Design characteristics (see following table)
7 Size of the magnetic coupling
8 Placement of magnets (overall length of the magnets [mm])
9 Material key
Abbreviation Design characteristic
FSpecial flanges
H Heatable housing and housing cover
I Heatable housing cover
S Special version
Tab. 6 Design characteristics
460.0019 GB – 550 267 BA-2010.03 CNH-M series 9

Layout and function
3.2 Layout
1
234
6
7
8
5
Fig. 4 CNH-M layout (with oil lubrication)
1 Volute casing
2 Magnetic coupling
3 Bearing bracket
4Shaft
5 Limit for heat insulation
6 Plain bearing
7 Pump shaft
8 Impeller
10 CNH-M series BA-2010.03 460.0019 GB – 550 267

Layout and function
3.3 Auxiliary operating systems
3.3.1 Heating
Fig. 5 Heating
1 Heating the casing
2 Heating the cover
460.0019 GB – 550 267 BA-2010.03 CNH-M series 11

Transport, storage and disposal
4 Transport, storage and disposal
4.1 Transport
Weight specifications (→documents for the particular
order).
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
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
immediately.
3. Dispose of packaging material according to local
regulations.
4.1.2 Lifting
DANGER
Death or crushing of limbs caused by falling loads!
Use lifting gear appropriate for the total weight to be
transported.
Fasten the lifting gear as illustrated in the following.
Never fasten the lifting gear onto the motor eyebolt (unless
used as a safety device against tipping over for units with
ahighcenterofgravity).
Do not stand under suspended loads.
Fig. 6 Fastening lifting gear to pump unit
Fig. 7 Fastening the lifting gear to the pump
Lift the pump/unit properly.
12 CNH-M series BA-2010.03 460.0019 GB – 550 267

Transport, storage and disposal
4.2 Treatment for storage
Not necessary for stainless materials
NOTE
Material damage due to inappropriate treatment for
storage!
Treat the pump properly, inside and outside, for storage.
1. Choose a preservative appropriate for the type and
duration of storage (→9.2.6 Preservatives, Page 44).
2. Use the preservative specified by the manufacturer.
3. All bare metal parts should be treated, inside and outside.
4.3 Storage
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
NOTE
Material damage due to inappropriate storage!
Treat and store the pump properly.
1. Close all openings with blank flanges, plugs or plastic
covers.
2. For models with oil-lubricated bearings and downtimes in
excess of one year:
– Remove reservoir
– Remove the connecting piece for the oil level regulator
– Seal the threaded hole
– Fill the bearing housing with oil, up to the brim
– Seal the bleed hole
3. Make sure the storage room meets the following
conditions:
–Dry
– Frost-free
– Vibration-free
4. Turn the shaft once a month.
5. Make sure the shaft and bearing change their rotational
position in the process.
460.0019 GB – 550 267 BA-2010.03 CNH-M series 13

Transport, storage and disposal
4.4 Removing preservative
Only necessary for pumps treated for storage.
WARNING
Risk of poisoning by preservatives and cleaning agents in
the foodstuffs and drinking water sector!
Only use cleaning agents which are compatible with the
pumped liquid (→9.2.7 Cleaning agents, Page 44).
Completely remove all preservative.
NOTE
High water pressure or spray water can damage bearings!
Do not clean bearing areas with a water or steam jet.
NOTE
Damage to seals by using the wrong cleaning agents!
Ensure the cleaning agent does not corrode the seals.
1. Choose the cleaning agent according to the application.
(→9.2.7 Cleaning agents, Page 44).
With Tectyl 506 EH: allow benzine to soak in for 10 minutes
(recommended).
2. Dispose of preservatives according to local regulations.
3. For storage times in excess of 6 months:
– Replace the elastomer parts made of EP rubber
(EPDM).
– Check all elastomer parts (O-rings, shaft seals) for
proper elasticity and replace them if necessary.
4.5 Disposal
Plastic parts can be contaminated by poisonous or
radioactive pumped liquids to such an extent that cleaning
will be insufficient.
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
WARNING
Risk of poisoning and environmental damage by the
pumped liquid or oil!
Use personal protective equipment when carrying out any
work on the pump.
Prior to the disposal of the pump:
– Collect and dispose of any leaking pumped liquid or oil
in accordance with local regulations.
– Neutralize residues of pumped liquid in the pump.
– Remove the preservative (→4.4 Removing
preservative, Page 14).
Remove the plastic parts and dispose of them in
accordance with local regulations.
Dispose of the pump in accordance with local regulations.
14 CNH-M series BA-2010.03 460.0019 GB – 550 267

Setup and connection
5 Setup and connection
For pumps in explosion-hazard areas (→ATEX additional
instructions).
NOTE
Material damage due to distortion or passage of electrical
current in the bearing!
Do not make any structural modifications to the pump unit
or pump casing.
Do not carry out any welding work on the pump unit or
pump casing.
NOTE
Material damage caused by dirt!
Do not remove the transportation locks until immediately
before installing the pump.
Do not remove any covers or transport and sealing covers
until immediately before connecting the pipes to the pump.
5.1 Preparing the setup
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
5.1.1 Checking the ambient conditions
Make sure the required ambient conditions are fulfilled
(→9.2.1 Ambient conditions, Page 43).
5.1.2 Preparing the installation site
Ensure the installation site meets the following conditions:
– Pump is freely accessible from all sides
–Sufficient space for the installation/removal of the pipes
and for maintenance and repair work, especially for the
removal and installation of the pump and the motor
– Pump not exposed to external vibrations (damage to
bearings)
– Frost protection
5.1.3 Preparing the foundation and surface
Setup options:
– With concrete foundation
– With steel foundation frame
– Without foundation
Make sure the foundation and surface meet the following
conditions:
–Level
– Clean (no oil, dust or other impurities)
– Capable of bearing the weight of the pump unit and all
operating forces
– Ensure the pump is stable and cannot tip over
– With concrete foundation: standard concrete of
strength class B 25
5.1.4 Removing preservative
Ifthepumpistobeputintooperationimmediatelyafter
setup and connection: remove the preservative prior to
setup (→4.4 Removing preservative, Page 14).
5.1.5 Installing heat insulation (optional)
Only necessary to maintain the temperature of the pumped
liquid
NOTE
Material damage on the bearing or shaft seal due to
overheating!
Only install the heat insulation on the volute casing
(→Figure CNH-M layout (with oil lubrication), Page 10).
Install the heat insulation properly.
460.0019 GB – 550 267 BA-2010.03 CNH-M series 15

Setup and connection
5.2 Installation on a foundation
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
NOTE
Material damage due to distortion of the base plate!
Place the base plate on the foundation and fasten it to it as
described in the following.
5.2.1 Placing the pump unit on the foundation
✔Implements, tools and materials:
– Foundation bolts (→setup drawing)
– Steel washers
– Non-shrinking mortar grout
– Spirit level
1. Lift the pump aggregate (→4.1 Transport, Page 12).
2. Attach the foundation bolts from below into the base plate
fixing holes.
Observe the manufacturer's instructions when using
adhesive anchors.
3. Set the pump unit down on the foundation. When doing
so, sink the foundation bolts into the prepared anchoring
holes.
32 1 2
Fig. 8 Setup with foundation
4. Use steel washers to align the pump unit to the height and
system dimensions as described in the following:
– Placeasteelwasher(2)totheleftandright-handside
of each foundation bolt (1).
– If the distance between the anchoring holes is greater
than 750 mm, place additional steel washers (3) in the
middle, on each side of the base plate.
5. Make sure the steel washers lie flat against the base plate,
in full contact.
6. Use the integrated spirit level to check whether the pump is
level end to end and side to side with a maximum allowable
tilt of 1 mm/m.
7. Repeat the procedure until the base plate is correctly
aligned.
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Setup and connection
5.2.2 Fastening the pump unit
The damping behavior is improved by filling the base plate
with mortar grout.
1. Fill the anchoring holes with mortar grout.
2. When the mortar grout has set, screw down the base plate
at three points with the specified torque.
3. Before tightening the remaining bolts, compensate for any
unevenness in the surface using metal spacing shims next
to each bolt.
4. Check the pump unit for any distortion with a straightedge:
1
Fig. 9 Checking for distortion
– Measure in two planes at an angle of 90° on the
circumference of the coupling.
– Check the light gap at the outer diameter using a
straightedge (1):
Position the straightedge across both halves of the
coupling.
If there is significant deviation, undo the fixing to the
base plate and correct the distortion by inserting more
shims.
– Fill the inside of the base plate with concrete, if
intended. Knock on the base plate to ensure that no
cavities are created in the process.
Couplings with a spacer piece (dismountable coupling) can
also be checked with a dial gauge.
5.3 Setup without foundation
✔Implements, tools and materials:
–Wrench
– Spirit level
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
1
1
1
1
2
3
4
Fig. 10 Installation without foundations
1. Lift the pump aggregate (→4.1.2 Lifting, Page 12).
2. Fit four leveling feet (1) as illustrated.
3. Set the pump aggregate down on the surface.
4. Use the adjustable feet (1) to set the height of the base
plate as illustrated above:
– Use a wrench to hold the hexagon steady on the
leveling foot (4).
– Loosen the hexagon nut (2).
– Set the height by turning the hexagon nut (3).
– Tighten the hexagon nut (2) (→9.2.4 Tightening
torques, Page 44).
– Use the integrated spirit level to check whether the
pump is level end to end and side to side with a
maximum allowable tilt of 1 mm/m.
– Repeat the procedure until the base plate is correctly
aligned.
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Setup and connection
5.4 Installing the motor
Onlynecessaryifthepumpunitisassembledonsite.
NOTE
Material damage caused by knocks and bumps!
Keep the coupling halves properly aligned when slipping
them on.
Do not knock or hit any components of the pump.
1. Smear a very thin coat of molybdenum disulfide (e.g.
Molykote) on the shaft ends of the pump and motor.
2. Insert shaft keys.
3. Without a mounting rig: remove the rubber buffers and heat
the coupling halves up to approximately 100 °C.
4. Slideonthepump-sideandmotor-sidecouplinghalves
until the shaft end is flush with the coupling hub. When
doing so, make sure the prescribed distance between the
coupling halves is maintained (→assembly instructions for
the coupling).
5. Tighten the grub screws on both coupling halves.
6. Use suitable metal shims at the motor to align the end of
the motor shaft to the end of the pump shaft.
7. Screw in the motor bolts, but do not tighten them yet
(→5.9 Aligning the motor, Page 22).
5.5 Planning the piping
5.5.1 Specifying supports and flange connections
NOTE
Material damage due to excessive forces and torques
exerted by the piping on the pump!
Do not exceed the permissible limits (→9.2.9 Flange loads
according to ISO 5199, Page 46).
1. Calculate the pipe forces, taking every possible operating
condition into account:
–Cold/warm
–Empty/full
– Unpressurized/pressurized
– Positional changes of the flanges
2. Ensure the pipe supports have permanent low-friction
properties and do not seize up due to corrosion.
5.5.2 Specifying nominal diameters
Keep the flow resistance in the pipes as low as possible.
1. Make sure the nominal suction pipe diameter is ≥the
nominal suction branch diameter.
2. Make sure the nominal pressure pipe diameter is ≥the
nominal outlet flange diameter.
5.5.3 Specifying pipe lengths
C
D
B
A
Fig. 11 Straight pipe lengths upstream and downstream
of the pump (recommended)
A > 5 x nominal suction pipe diameter
B Nominal suction pipe diameter
C Nominal pressure pipe diameter
D > 5 x nominal pressure pipe diameter
Maintain the recommended minimum values when
installing the pump.
Suction side: shorter pipes are possible but may restrict
the hydraulic performance.
Pressure side: shorter pipes are possible but can result in
increased operating noise.
5.5.4 Optimizing cross-section and direction changesv
1. Avoid bending radii of less than 1.5 times the nominal pipe
diameter.
2. Avoid abrupt changes of cross-section along the piping.
5.5.5 Discharging leaks
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Safely collect any leaking pumped liquid, then discharge
and dispose of it in accordance with environmental
regulations.
1. Provide equipment for collecting and discharging leaking
liquids.
2. Ensure the free discharge of leaking liquids.
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Setup and connection
5.5.6 Providing safety and control devices
(recommended)
Avoid impurities
1. Integrate a filter in the suction pipe.
2. To monitor impurities, install a differential pressure gauge
with a contact manometer.
Avoiding reverse running
Install a non-return valve between the outlet flange and the
gate valve to ensure the medium does not flow back when
thepumpisswitchedoff.
Making provisions for isolating and shutting off pipes
For maintenance and repair work.
Provide shut-off devices in the suction and pressure pipes.
Allow measurements of the operating conditions
1. Provide manometers for pressure measurements in the
suction and pressure pipes.
2. Provide load monitors (overload and underload) on the
motor side.
3. Provide for pump-side temperature measurements.
5.6 Connecting the pipes
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
5.6.1 Keeping the piping clean
NOTE
Material damage due to impurities in the pump!
Make sure no impurities can enter the pump.
1. Clean all piping parts and fittings prior to assembly.
2. Ensure no flange seals protrude inwards.
3. Remove any blank flanges, plugs, protective foils and/or
protective paint from the flanges.
5.6.2 Installing auxiliary piping
Observe the manufacturers' specifications for any auxiliary
operating systems which are present.
1. Connect the auxiliary pipes to the auxiliary connections so
that they are stress-free and do not leak (→setup drawing).
2. To avoid air pockets: run the pipes with a continuous slope
up to the pump.
5.6.3 Installing the suction pipe
1. Remove the transport and sealing covers from the pump.
2. To avoid air pockets: run the pipes with a continuous slope
up to the pump.
3. Ensure no seals protrude inwards.
4. For suction operation: install a foot valve in the suction pipe
to prevent the pump and suction pipe from running empty
during downtimes.
5.6.4 Installing the pressure pipe
1. Remove the transport and sealing covers from the pump.
2. Install the pressure pipe.
3. Ensure no seals protrude inwards.
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Setup and connection
5.6.5 Inspection for stress-free pipe connections
✔Piping installed and cooled down
NOTE
Material damage due to distorted pump casing
Ensure that all pipes are stress relieved when connected
to the pump.
1. Disconnect the pipe connecting flanges from the pump.
2. Check whether the pipes can be moved freely in all
directions within the expected range of expansion:
– Nominal diameter < 150 mm: by hand
– Nominal diameter > 150 mm: with a small lever
3. Make sure the flange surfaces are parallel.
4. Reconnect the pipe connecting flanges to the pump.
5.6.6 Inspecting the support foot for distortion
1. Loosen the bolts connecting the support foot to the base
plate.
2. If the support foot moves, compensate for distortion:
– Lateral shift: by means of slotted holes
– Height shift: by means of metal shims
3. Screw the support foot back onto the base plate, making
sure that the bearing bracket is not distorted in the process.
5.7 Electrical connection
DANGER
Risk of death and material damage due to magnetic field!
Make sure that personnel who have a pacemaker do not
perform any work on the pump.
Secure the work area. If necessary isolate the area:
– Make sure that personnel with pacemakers keep a safe
distance of at least 1 m.
– Make sure that no magnetizable metal parts can be
attracted by the magnetic coupling of the pump.
– Make sure that parts of the magnetic coupling cannot
be attracted by the magnetizable metal parts.
Keep all magnetic-sensitive objects at a safe distance of at
least 150 mm from the magnetic coupling.
DANGER
Risk of death due to electric shock!
Have all electrical work carried out by qualified electricians
only.
DANGER
Risk of death due to rotating parts!
Isolate the motor from its supply voltage and secure it
against being switched back on again prior to any fitting or
maintenance work.
5.7.1 Connecting the motor
Follow the instructions of the motor manufacturer.
1. Connect the motor according to the connection diagram.
2. Make sure no danger arises due to electric power.
3. Install an EMERGENCY STOP switch.
5.7.2 Checking the sense of rotation
DANGER
Risk of death due to rotating parts!
Use personal protective equipment when carrying out any
work on the pump.
Secure the shaft key from being thrown out when checking
the sense of rotation.
Keep an adequate distance to rotating parts.
NOTE
Material damage caused by dry running or incorrect sense
of rotation!
Uncouple the motor from the pump.
1. Switch the motor on and immediately off again.
2. Check whether the motor's sense of rotation is the same
as that of the arrow on the pump.
3. If the sense of rotation is different: swap two phases.
4. Couple the motor to the pump again.
20 CNH-M series BA-2010.03 460.0019 GB – 550 267