Multitech Water Pump 17778 7 10 G3 User Manual

Operating instructions

Multitec

1777.8/7-10

High-pressure pumps in

ring-section design

Works No.:

__________________________________

Type series:

__________________________________

These operating instructions contain fundamental

information and precautionary notes. Please read

the manual thoroughly prior to installation of unit,

connection to the power supply and commissioning. It is

imperative to comply with all other operating instructions

referring to components of this unit.

This manual shall always be kept close to the unit’s

location of operation or directly on the pump set.

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Index

Section

Page

Section

Page

Adjusting dimensions for coupling

alignment, pump sizes 32 to 65, versions

E, Ex, F, Fx, V, Vx

Reassembly of hydraulic system

7.4.2

Recommended spare parts stock for 2

years’ continuous operation

7.3.7

7.5.2

Aligning the pump / drive

Applications

5.3.1

4.4

Repairs

Returning to service after storage

Safety

6.4

Bearings

7.4.4

7.2.2

Bearings and lubrication

Safety awareness

2.4

Checking the direction of rotation

Commissioning

5.5.3

6.1

Safety instructions for maintenance,

inspection and installation work

2.6

Safety instructions for the operator / user 2.5

Commissioning, start-up / shutdown

Connecting the motor

Safety regulations / Special instructions

Servicing / inspection

Servicing / maintenance

Setting the time relay

Shaft seal

5.1

7.2

5.5.1

5.4

Connecting the piping

Connection to power supply

Contact guard

5.5/6.1.4 10/12

5.5.2

6.1.3

7.2.4

7.2.3/7.4.3 15/21

Coupling

Shutdown

6.1.6

6.3

Density of fluid pumped

6.2.4

Shutdown / storage / preservation

Description of the product and

accessories

Start-up

6.1.5

3.2

Storage / Preservation

Supervision of operation

Design details

Designation

Dismantling

4.3

4.2

7.3

7.2.1

Switching frequency

6.2.2

4.1

Technical specification

Temperature of fluid pumped

Dismantling and replacement of shaft

seals

6.2.1

7.3.4

7.3.3

7.3.6

7.3.5

6.1.7

The pump is removed from the pipe and

stored

Dismantling the bearings

Dismantling the hydraulic systems

Dismantling the mechanical seal

Final check

6.3.2

6.3.1

The unit / pump remains installed; periodic

check of operation

Tightening of shaft nuts on Multitec pumps

Foundation / Checks to be carried out

prior to installation

Tightening torques - Tie bolts (part No.

905)

5.2

7.4.1

3.1

General

Transport / Handling

General assembly drawings

27-29

Transport / Storage

Trouble-shooting

General instructions

7.1

General instructions (dismantling)

Installation at site

7.3.1

Unauthorized modes of operation

Vacuum balance line

2.8

5.4.1

Installing the pump/unit

List of components

5.3

9.1

Lubricants

6.1.1

2.1

Marking of instructions in the manual

Max. clearance gaps

7.5.1

Minimum flows

6.2.3

Modification and manufacture of spare

parts by customer

2.7

2.3

6.2

2.2

Non-compliance with safety instructions

Operating limits

Personnel qualification and training

Preparations for dismantling

7.3.2

Priming the pump and checks to be

carried out

6.1.2

7.5

Re-adjusting the clearance gaps

Reassembly

7.4

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is used to introduce safety instructions whose non-observance

may lead to damage to the equipment and its functions.

General

The Multitec pump has been developed in accordance with

state-of-the-art technology; it is manufactured with utmost care

and subject to continuous quality control.

Instructions attached directly to the machine, e.g.

arrow indicating the direction of rotation

markings for auxiliary connections

These operating instructions are intended to facilitate operation

of the pump and help in commissioning and maintenance.

must always be complied with and be kept in a perfectly legible

condition at all times. Non-compliance with these safety

instructions will lead to forfeiture of manufacturer’s warranties.

The manual also contains important recommendations for

reliable, proper and efficient operation.

These operating instructions do not take into account local

regulations; the operator must ensure that such regulations are

strictly observed by all, including the personnel called in for

installation.

2.2

Personnel qualification and training

All personnel involved in the operation, maintenance,

inspection and installation of the unit must be fully qualified to

carry out the work involved.

Multitec pumps must not be operated beyond the limit values

specified in the technical documentation for the fluid handled,

capacity, speed, density, pressure, temperature and motor

rating. Make sure that operation is in accordance with the

instructions laid down in this manual or in the contract

documentation.

Personnel responsibilities, competence and supervision must

be clearly defined by the operator. If the personnel in question is

not already in possession of the requisite know-how,

appropriate training and instruction must be provided. If

required, the operator may commission the manufacturer /

supplier to take care of such training. In addition, the operator is

responsible for ensuring that the contents of the operating

instructions are fully understood by the responsible personnel.

The name plate indicates the type series / size and the main

operating data; please quote this information in all

correspondence and particularly when ordering spare parts.

If you need any additional information or instructions exceeding

the scope of this manual or in case of damage please contact

KSB’s after-sales service.

2.3

Non-compliance with safety instructions

Non-compliance with safety instructions can jeopardize the

safety of personnel, the environment and the machine / unit

itself. Non-compliance with these safety instructions will also

lead to forfeiture of any and all rights to claims for damages.

In particular, non-compliance can, for example, result in:

Safety

These operating instructions contain fundamental information

which must be complied with during installation, operation and

maintenance. Therefore this operating manual must be read

and understood both by the installing personnel and the

responsible trained personnel / operators prior to installation

and commissioning, and it must always be kept close to the

location of operation of the machine / unit for easy access.

failure of important machine/system functions,

failure of prescribed maintenance and servicing practices,

hazard to persons by electrical, mechanical, thermal and

chemical effects,

hazard to the environment due to leakage of hazardous

substances.

Not only must the general safety instructions laid down in this

chapter on ”Safety” be complied with, but also the safety

instructions outlined under specific headings, plus:

2.4

Safety awareness

It is imperative to comply with the safety instructions contained

in this manual, the relevant national health and safety

regulations and the operator’s own internal work, operation and

safety regulations.

the general safety rules for working materials and protective

devices,

the applicable organizational guidelines for the

commissioning of working materials and tools

(work guidelines R233-1 to R233 - 10 and decree No. 93-41

dd. 11/1/93, or country-specific guidelines).

2.1

Marking of instructions in the manual

The safety instructions contained in this manual whose

non-observance might cause hazards to persons are specially

marked with the general hazard sign, namely:

(safety sign as per ISO 7000 - 0434)

The electrical danger warning sign is

(safety sign as per IEC 417 - 5036).

The word

Caution

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2.5 Safety instructions for the operator / user

Any hot or cold components that could pose a hazard must

be equipped with a guard by the operator.

Guards which are fitted to prevent accidental contact with

moving parts (e.g. coupling) must not be removed whilst the

unit is operating.

Leakages (e.g. at the shaft seal) of hazardousfluids handled

(e.g. explosive, toxic, hot) must be contained so as to avoid

any danger to persons or the environment. All relevant laws

must be heeded.

Electrical hazards must be eliminated. (In this respect refer

to the relevant safety regulations applicable to different

countries and/or the local energy supply companies.)

Fig. 2 Transport of pump unit

For transporting the unit, lifting ropes shall be attached to the

pump and the motor as shown above. Never use the motor

eyebolt for lifting the unit!

2.6 Safety instructions for maintenance, inspection and

installation work

The operator is responsible for ensuring that all maintenance,

inspection and installation work be performed by authorized,

qualified specialist personnel who are thoroughly familiar with

the manual.

Work on the machine / unit must be carried out only during

standstill. The shutdown procedure described in the manual for

taking the unit out of service must be adhered to without fail

(section 6.3).

Pumps or pump units handling fluids injurious to health must be

decontaminated.

Immediately following completion of the work, all

safety-relevant and protective devices must be re-installed and

/ or re-activated.

Fig. 3 Transport of close-coupled pumps and vertical pumps

Please observe all instructions set out in the chapter on

”Commissioning” (6.1) before returning the unit to service.

2.7 Modification and manufacture of spare parts by

customer

Modifications or alterations of the equipment supplied are only

permitted with KSB’s prior approval. Original spare parts and

accessories authorized by KSB ensure safety. The use of other

parts will invalidate any liability of the manufacturer for

consequential damage.

3.2 Storage / Preservation

Unless otherwise stated in the purchase order and order

confirmation, the pumps are supplied by our factory duly

preserved for a storage period of 3 months from delivery. We

recommend to take the following additional measures if the

pump is stored for a prolonged period of time prior to

commissioning:

Indoor storage of new pumps:

New pumps are preserved for indoor storage in a dry, closed

room in their original, unopened packaging for a maximum

period of 3 months.

2.8 Unauthorized modes of operation

The warranty relating to the operatingreliability and safety ofthe

pump is only valid if the machine is used in accordance with its

designated use, i.e. with the technical dataspecified. Forfurther

details please refer to the information in section 4 of this

operating manual. The limits stated in the data sheet must not

be exceeded under any circumstances.

Protect all stored goods against moisture, dirt,

Caution

vermin and unauthorized access! All openings of

the assembled unit components are closed and must only be

opened when required during installation.

Outdoor storage with the packaging unopened:

Protect the pump/unit against moisture, dirt, vermin and

unauthorized access.

Transport, storage

3.1 Transport / Handling

It is imperative to remove the preservative prior to normal

commissioning by flushing through the system.

Transport of the unit requires proper preparation and handling.

Never use the motor eyebolt for lifting the unit.

If the pump is to be stored for more than 3 months

(optional, specified in the purchase order):

New pump/unit:

New pumps/units are specially preserved in the manufacturer’s

factory.

It is imperative to remove the preservative prior to normal

commissioning by flushing through the system.

If the pump

arrangement, it may cause personal injury and damage

to property!

unit slips out of the suspension

Do not use lifting gear which may damage the pump (e.g.

no chains).

The product used for this purpose is not suitable

Caution

for potable water systems and must be removed

completely by dismantling and subsequent cleaning of all parts

of the pump coming into contact with the fluid handled, if

required. For further information please refer to the order

confirmation.

The unit/pump is installed some time before the system is

commissioned:

Special measures have to be taken for prolonged shutdown

periods, to make sure that the pump is always ready for instant

start-up and to prevent the formation of deposits within the

pump’s hydraulic system and intake area (see section 6.3.1).

Fig. 1 Transport of pump only

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4.2

Designation

Description of the product and

accessories

Multitec A 32 / 8E - 2.1 12 . 65 (SP)

Type series

Installation type / pump version

Discharge nozzle DN

4.1 Technical specification

No. of stages / impeller combination

Hydraulic system

Multistage centrifugal pumps in ring-section design with suction

impeller for low NPSH value (exception: MTC 32).

Material variant

Shaft seal code

Horizontal design, baseplate

mounted

Code for special variants (optional)

1 casing entry, drive end

1 rolling element bearing, drive end

1 plain bearing, suction end

4.3 Design details

Pump type

axial suction nozzle

for the entire H/Q range

High-pressure centrifugal pump in long-coupled (baseplate

mounted) or close-coupled design, horizontal or vertical

version, axial or radial suction nozzle. Radial suction and

discharge nozzles can be turned by 90L.

Bearings:

Radial bearings are silicon carbide plain bearings (not on

versions C and D), self-aligning. Plain bearings lubricated by

fluid handled. Fixed bearings are rolling element bearings,

grease- or oil-lubricated.

same as installation type A, but

radial suction nozzle

Horizontal design, baseplate

mounted,

2 casing entries, drive and suction

end

Shaft seals:

Uncooled gland packing; with or without barrier fluid.

Standardized mechanical seal (uncooled, cooled)to EN12756.

Double-acting mechanical seal with standardized mechanical

seals to EN 12756 (back-to-back or tandem).

Cartridge seals, special designs.

2 rolling element bearings

drive on discharge side

for the entire H/Q range

same as installation type C, but

drive on suction side

Drive:

Electric / hydraulic drives, Diesel engines or turbines up to max.

4000 1/min.

Horizontal close-coupled pump,

4.4 Applications

common bearing for pump and mo-

tor,

Municipal water supply: pumping stations, water treatment

and pressure boosting systems.

Water treatment: filtration, reverse osmosis.

Pumps in industrial applications: general water supply, cold

water, washing systems, recycling, cooling circuits, boiler feed

systems, hot water, superheated water, condensate handling,

process, organic and inorganic liquids, degreasing agents,

washing or alkaline solutions, lubricants, cooling, surface

treatment.

rigid coupling,

radial suction nozzle

H/Q range: up to 100 m /h, 25 bar

same as installation type E, but

axial suction nozzle

Vertical close-coupled pump

H/Q range: up to 204 m /h 25 bar

Air-conditioning: large-scale air-conditioning systems,

high-rise buildings

up to 100 m /h 40 bar

Irrigation: centre-pivot sprinkling systems, trickle irrigation

systems, square sprinkling systems, flood irrigation systems.

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5.3 Installing the pump/unit

Installation at site

Before placing the baseplate on the foundation, make sure that

the concrete foundation is clean and smooth. The complete

pump unit must be aligned horizontally with the help of a

precision spirit level.

5.1 Safety regulations / Special instructions

Electrical equipment operated in potentially

explosive atmospheres must comply with the

relevant explosion protection regulations. This is

indicated on the motor rating plate. If the equipment is

installed in potentially explosive atmospheres, the

applicable local explosion protection regulations and the

regulations of the test certificate supplied with the

equipment and issued by the responsible approval

authorities must be observed and complied with. The test

certificate supplied must be kept close to the location of

operation for easy access (e.g. foreman’s office).

It is imperative that the factory-aligned unit mounted on the

baseplate be re-aligned after it has been fastened on the

foundation and after the piping has been connected (precision

alignment).

After placing the pump unit on the foundation, align it with the

help of a spirit level placed on the shaft/discharge nozzle. The

correct distance between the coupling halves as specified in

the general arrangement drawing must be observed. Shims

shall be fitted between the baseplate/foundation frame and the

foundation itself; they shall always be inserted to the left and

right of the foundation bolts and in close proximity to these bolts.

For a bolt-to-bolt clearance > 800mm, additional shims shall be

used. All shims must lie perfectly flush.

Centrifugal pumps will only give trouble-free

operation if carefully installed and properly serviced.

Note: The pump’s name plate shows the type series, pump

size, version, main operating data and the works number (see

also section 4.2).

Shim

O 800

Shim

Please quote the type series / version in all queries, repeat

orders and particularly when ordering spare parts.

Foundation bolts

Fig. 5 Fitting required shims

Tighten the foundation bolts evenly and firmly after after the

concrete has set.

It is essential to make sure that the baseplate is

Caution

Fig. 4

Name plate

not warped in axial or radial direction.

Proceed with utmost care when aligning the unit, as the pump

unit will only give trouble-free operation when correctly aligned.

Non-compliance with these instructions will lead to forfeiture of

all warranty claims.

Channel section baseplates (up to 400 mm wide) are

torsion-resistant in their own right; they need not be grouted.

After fastening, baseplates more than 400 mm wide shall be

grouted up to the upper frame edge using low shrinkage

concrete, making sure that no cavities remain.

Close-coupled pumps

This unit must not be operated beyond the limit

values for capacity, speed and temperature

specified on the name plate. Make sure that operation is in

accordance with the instructions laid down in this manual

or in the contract documentation. All values stipulated for

electrical connection of the unit as well as instructions

given for installation and maintenance must be adhered to

without fail. Operation of the unit outside the

above-mentioned conditions may result in overloads the

unit cannot withstand.

It is essential to make sure that the pump is not warped in axial

or radial direction.

If pump and motor are supplied separately, place the pump onto

the foundation without the motor, align with the help of a

precision spirit level (on the upper flange of the drive lantern),

then fasten.

To align the pump, shims shall be fitted between the pump foot

and the foundation itself; they shall always be inserted to the left

and right of the foundation bolts and in close proximity to these

bolts. All shims must lie perfectly flush. Tighten the foundation

bolts evenly and firmly.

Skilled, properly trained personnel is essential to ensure

trouble-free operation of the unit.

KSB shall not accept any liability if the instructions set

forth in this manual are not complied with.

In case of damage or if you need further information please

contact our nearest customer service centre.

5.2 Foundation / Checks to be carried out prior to

installation

All structural work required must have been prepared in

accordance with the dimensions stated in the dimension table /

general arrangement drawing.

Shim

The concrete foundations shall have sufficient strength (min.

class X0) to ensure safe and functional installation in

accordance with DIN 1045 or equivalent standards.

Make sure that the concrete foundation has set firmly before

placing the unit on it. Its surface shall be truly horizontal and

even.

Fig. 6 Fitting required shims

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5.3.1 Aligning the pump / drive

Coupling guard

For fluid temperatures of 120LC and higher, the

foot bolts holding the pump onthe baseplatemust

be tightened to the following torques:

Caution

In compliance with health and safety

Caution

Tightening torque

regulations the pump must not be operated

without a coupling guard / a guard on the drive lantern. If the

customer specifically requests not to include a coupling guard /

lantern guard in our delivery, then the operator must supply one.

MTC

Thread

Strength

Drive

end

Non-drive

end

M 12

M 16

M 20

M 30

4.6

30 Nm

15 Nm

30 Nm

60 Nm

200 Nm

Baseplate-mounted units

After fastening the baseplate on the foundation, the

coupling must be thoroughly checked and the pump

set be re-aligned (at the motor), if required.

60 Nm

100

125

150

120 Nm

450 Nm

Prior to checking the alignment/realignment, loosen the pump

feet and re-tighten without transmitting any stresses or strains.

Coupling check and realignment must be

effected even if pump and motor are supplied

completely assembled and aligned on a common baseplate.

Caution

This will avoid that any increase in pump length due to

thermal expansion will lead to warping and deformation.

The increase in height of pump and drive due to thermal

expansion may differ; this has to be considered when

aligning the coupling of pump units handling temperatures of

100LC and higher.

The following equation can serve as a guide to estimate by

how much the motor has to be elevated in relation to the

pump:

Straight-edge

ꢀH [mm] = 1/100000 * (ꢀTp * Hp - ꢀTm * Hm)

ꢀTp = Temperature difference pump - ambient (LC)

Height of pump axis [mm]

ꢀTp = Temperature difference motor - ambient (LC)

Straight-edge

Gauge

Height of motor axis [mm]

In any case, also when using this correction, the

coupling has to be re-aligned when the unit has

reached operating temperature.

Fig. 7 Aligning the coupling with the help of a gauge and a

straight-edge

Caution

Straight-edge

Close-coupled pumps and vertical pumps

Alignment between the motor and the pump is ensured by the

centering effect between the motor flange and the drive lantern

flange. It must be easy to rotate the shaft.

For MTC V 32-65 please observe the adjusting

dimensions for coupling alignment (see page 31).

Caution

Final check

Re-check the alignment as described in the sections above. It

must be easy to rotate the coupling by hand. Check the integrity

and proper functioning of all connections.

Straight-edge

Gauge

Fig. 8 Aligning a spacer-type coupling

The radial and axial deviation between the two coupling halves

must not exceed 0.1 mm.

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5.4 Connecting the piping

Max. permissible pipeline forces

(material codes 10, 11, 12, 13)

Suction lift lines shall be laid with a rising slope towards the

pump and suction head lines with a downward slope towards

the pump, to prevent the formation of air pockets.

With short pipelines, the nominal diameters should be at least

equal to the nominal diameters of the pump nozzles. For long

pipelines, the most economical nominal diameter has to be

determined from case to case.

Adapters to larger diameters should have a diffuser angle of

approx. 8L in order to avoid any pressure losses caused by the

formation of air pockets or gas.

Nom. nozzle diameter (DN)

65 80 100 125 150 200 250

Vertical nozzle, at a right angle to the shaft (N )

245 510 640 700 1015 1470 1780 2700

410 635 800 970 1270 1850 2220 3490

265 415 520 625 830 1220 1465 2220

Horizontal nozzle, at a right angle to the shaft (N )

It is recommended to install check and shut-off elements in the

system, depending on the type of plant and pump.

245 510 640 800 1015 1470 1780 2700

265 415 520 625 830 1220 1465 2220

410 635 800 970 1270 1850 2220 3490

Never use the pump itself as an anchorage point

Caution

for the piping. The piping-induced forces and

moments acting on the pump flanges (e.g. due to warped

pipelines or thermal expansion) must not exceed the

permissible forces and moments.

Axial nozzle, parallel to the shaft (N )

800

520

640

1270 1850 2220 3490 4760

830 1220 1465 2220 3180

1015 1470 1780 2700 3810

The pipelines shall be anchored in close proximity to the pump

and connected without transmitting any stresses or strains.

Their weight must not be carried by the pump.

Moments for all nozzles (Nm )

If welding work must be performed on the piping

260 330 460 680 950 1235 1640 2520 3580

160 250 350 520 715 930 1260 1840 2710

190 170 240 340 490 660 840 1260 1740

Caution

when the pump is already installed, the electric

welding equipment must not be earthed on the pump or

baseplate, to prevent current flowing through the rolling element

bearings, which could cause their premature destruction (pitting

effect).

Example:

Multitec 50 with radial suction nozzle

Thermal expansions of the pipelines must be

compensated by appropriate measures so as not to

impose any extra loads on the pump.

Expansion joints may have to be used. An excessive,

impermissible increase in the pipeline forces may cause leaks

on the pump where the fluid handled can escape into the

atmosphere.

for the suction nozzle, the values given intable columnDN80

apply

for the discharge nozzle, the values given in table column

DN50 apply

Max. permissible pipeline forces

(material codes 20 to 30)

The values given for material codes 10, 11, 12,13 shall be

multiplied by the factor 1.4.

Danger to life when hot fluids are handled!

Protection against foreign matter

Before commissioning new installations thoroughly clean, flush

and blow through all vessels, pipelines and connections. Often

welding beads, scale and other impurities only come off after a

certain period of operation. Fit a strainer in the suction line to

prevent them from entering the pump. The total cross-section of

the holes in the strainer shall be three times the cross-section of

the pipeline in order to avoid excessive pressure loss across

the strainer due to clogging. Conical strainers with laid in wire

mesh having a mesh width of 0.5 mm and a wire diameter of

0.25 mm, of corrosion-resistant material, shall be used.

Fig. 9 Max. nozzle forces and moments

Direction of forces:

horizontal, parallel to the pump axis

vertical to the pump axis

horizontal, at a right angle to the pump axis

1 Strainer housing

2 Fine screen

3 Perforated plate

4 Pump suction nozzle

5 Differential pressure gauge

Direction of moments:

around the horizontal axis, parallel to the pump axis

MY = around the vertical nozzle axis

around the horizontal axis, at a right angle to the

pump axis

Fig. 10 Conical strainer for the suction line

Suction and discharge nozzle are regarded separately.

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Y configuration (high voltage)

5.4.1 Vacuum balance line

Where liquid has to be pumped out of a vessel under vacuum, it

is advisable to install a vacuum balanceline. Thisline shallhave

a minimum nom. diameter of 25 mm and must extend above the

highest permissible liquid level of the vessel.

An additional pipeline fitted with a shut-off valve – from the

pump discharge nozzle to the balance line – facilitates venting

of the pump before start-up.

Fig. 13

Connection diagram for three-phase motors,

Y configuration

5.5.2 Setting the time relay

Make sure that in the case of three-phase motors with star-delta

starting method switching over from star to delta will be effected

at very short intervals. Prolonged switchover intervals may

result in pump damage.

Recommended time relay setting for star-delta starting: 3 to 5

seconds, depending on motor rating.

EN 50014 (DIN VDE 0170/0171 Part 1) stipulates that

explosion-proof motors, type of protection IP 54, increased

safety (Ex)e, thermal class T3, must always be connected via a

motor protection switch.

1212:5

A Main shut-off valve

B Vacuum balance line

C Shut-off valve

E Vacuum-tight shut-off valve

R Swing check valve

V Vessel under vacuum

Z Intermediate flange

5.5.3 Checking the direction of rotation

On pumps fitted with uni-directional mechanical

Caution

seals (seal codes 62 and 63) the direction of

rotation must never be checked with the pump coupled to the

motor. If the pump/motor coupling doesnot haveto beremoved,

make sure that the pump has been primed before checking the

direction of rotation.

Fig. 11 Suction line and vacuum balance line

The motor’s direction of rotation must correspond to the

direction indicated by the arrow on the pump or motor

(clockwise when seen from the motor end; on version D

anti-clockwise). Verify by switching the motor on and then off

again immediately.

If the pump runs in the wrong direction of rotation, interchange

any two phases L1, L2 or L3 of the power cable in the motor

terminal box.

5.5 Connection to power supply

Connection to the power supply must be effected by a

trained electrician only (see 5.1)!

The applicable DIN VDE regulations or country-specific

guidelines must be complied with.

Check available mains voltage against the data on the motor

rating plate and select appropriate start-up method.

All connections shall be effected in accordance with the

technical specifications issued by the local energy supply

company.

We strongly recommend to use a motor protection switch.

5.5.1 Connecting the motor

Connect the motor in accordance with the circuit diagram in the

terminal box or as illustrated in fig. 12 or fig. 13.

Prior to starting the motor, check whether thewires

are firmly connected at the terminals and

re-tighten any loose wires.

Caution

n configuration (low voltage)

Fig. 12

Connection diagram for three-phase motors,

n configuration

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Special notes regarding cooled mechanical seals

(seal code 64)

Commissioning, start-up / Shutdown

Instructions for boiler feed applications

If the pump is equipped with a cooled mechanical seal, vent

the seal chamber by opening the screwed plug 903.11 by a

quarter turn, then re-tighten.

Limit values for boiler feed water and condensate when using

cast iron pump parts: pH value O 9.0 (target: O 9.3)

O content ≤0.02 ppm.

These values must be ensured under all operating conditions

before entry into the pump. Max. percentage of fresh water:

25%.

Pump sizes

32 to 100

Water treatment shall be in accordance with VdTÜV guidelines

for feed and boiler water in steam plants of up to 64 bar.

The penetration of air into the system must be avoided by all

means.

6.1 Commissioning

Before starting up the pump make sure that the

Caution

following requirements have been met:

The quality of the concrete foundation is in compliance with

the applicable regulations.

The tolerances stipulated for mounting the unit on the

foundation, for shims and alignment have been complied

with.

The pipelines have been connected without warping the

pump nozzles.

Electrical connection and relay settings correspond to the

motor rating and comply with the applicable regulations.

All hydraulic, electrical and mechanical protection devices

have been set.

Fig. 14

Pump sizes

125 and 150

The pump has been fully primed with the fluid to be pumped.

The unit’s direction of rotation corresponds to the rotation

arrows.

All connections are leak-free.

For installation without foundation (e.g. on spring

elements) care must be taken that all movements

Caution

of the pump unit can be compensated, e.g. by fitting expansion

joints in the discharge and suction lines.

6.1.1 Lubricants

Grease-lubricated bearings

The grease-lubricated bearings are packed with grease at the

factory (see section 7.2.2).

Oil lubricated bearings

Fill oil of ISO VG 46 quality into the bearing cover (see section

7.2.2).

6.1.2 Priming the pump and checks to be carried out

Fig. 15

Before each start-up, the pump and the suction line must be

completely vented and primed with the fluid to be pumped. The

pump has several plugged holes for venting; adequate venting

devices can be used in the pipelines. The shut-off valve in the

suction or feed line must be fully open.

The seal chamber has to be vented when the

pump is in cold condition before start-up. When

Caution

venting in hot condition, steam will escape at the vent plug

during the venting process (risk of scalding!) Should it not be

possible to avoid opening the seal chamber in hot condition,

due to the situation in the plant, a pipe with valve (not included in

KSB’s scope of supply) must be installed at the vent hole, in

order to lead the steam escaping during venting to another

place where there is no danger of scalding. Make sure that this

valve cannot be opened during operation.

Fully open all auxiliary connections provided and check the

throughflow.

Open shut-off valve ”C” in the vacuum balance line (if any), and

close the vacuum-tight shut-off valve ”E” (see 5.4.1).

Dry running will lead to increased wear on the unit

Caution

and may eventually damage the pump !

If the discharge line is equipped with an automatic check valve,

open the minimum flow valve and secure against inadvertent

closing.

Exceptions:

If there is not enough back pressure in the line prior to

start-up, the shut-off element must be closed before pump

start-up.

On pumps fitted with a mechanical seal, the mechanical seal

will leak only slightly, i.e. practically invisibly (vapour) during

operation. It is maintenance-free.

If the pump is equipped with a gland packing, leakage during

operation is normal (see 6.1.6).

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If the pump has to remain operational during shutdown periods,

it must be started up regularly for at least 5 minutes (see also

6.3):

6.1.3 Contact guard

In compliance with health and safety regulations the

pump must not be operated without a coupling guard. If

the customer specifically requests not to include a coupling

guard in our delivery, then the operator must supply one.

fire-fighting pumps at least once a month

drinking water pumps at least once in 48 hours

stand-by pumps at least once a week

(It is better to operate the pumps by alternating daily.)

6.1.4 Connection to power supply

During these periodic check runs also check the integrity and

proper functioning of the auxiliary feed lines.

If the pump is equipped with an electric motor, connection to the

power supply must be effected by a trained electrician only.

Check available mains voltage against the data on the motor

rating plate and select appropriate start-up method.

Make sure that in the case of three-phase motors with star-delta

starting method switching over from star to delta will be effected

at very short intervals. Prolonged switch-over intervals will

result in pump damage.

6.1.7 Final check

After the pump has been primed, it must be easy to rotate the

coupling/ shaft by hand.

There must be no impermissible leakage at the shaft seal

during pump operation.

Gland packing

Time relay setting for star-delta starting

The gland packing has been fitted in the factory. Its permanent

compression can only be set after several hours of pump

operation. During this running-in period, gland leakage will be

higher than during normal pump operation. Check the

temperature of the leakage.

Motor rating

Y time to be set

3 sec. ± 30 %

5 sec. ± 30 %

≦ 30 kW

> 30 kW

Final adjustment of the gland packing is made gradually after

having allowed for a sufficient running-in period, so that leakage

is reduced to individual drops (approx. 20 drops per minute).

Tightening the gland cover too early or too hard without allowing

6.1.5 Start-up

Start-up procedure

The discharge-side shut-off valve must be closed.

Start-up must proceed without abnormal vibrations or

noises.

An automatic check valve installed must open steadily when

the operating speed has been reached, without abnormal

noise, vibrations or increased power consumption of the

unit.

for

sufficient running-in period would cause

local

temperature rise and insufficient lubrication, resulting in the

destruction of the gland packing, premature wear on the shaft

protecting sleeve and higher, uncontrollable leakage.

For speed controlled pumps or fluctuating inlet pressure, no

gland packing should be used, if possible. Changing pressures

make it difficult to set an even and controlled leakage rate.

Open the discharge-side shut-off valve.

After the duty point has been reached, check motor input

power and bearing temperature.

Should such conditions occur, leakage of the

Caution

After the operating temperature has been reached, switch off

the pump and re-tighten the bolts at the connecting flanges.

gland packing must not be prevented under any

operating conditions. At increased inlet pressure and/or

increased speed, the inevitably higher leakage of the gland

packing must not be reduced by re-tightening the gland bolts.

The minimum leakage rate must only be set at the lowest speed

and/or lowest inlet pressure.

In the event of abnormal noise, vibrations,

Caution

temperatures or leakage, switch off the unit

immediately and re-start it only after the cause for the problem

has been eliminated.

Increased temperatures at the rolling element bearings after

commissioning are caused by the running-in process. The final

bearing temperature will be reached only after a certain

operating period (up to 48 h, depending on operating

conditions).

Mechanical seal

The mechanical seal assembly has beenadjusted andinstalled

in the factory. It is maintenance-free. Check the seal for leakage

occasionally.

During commissioning, increased leakage may occur for a

short period of time. If leakage remains high, immediately

switch off the pump and investigate the leakage cause, e.g.

contaminated fluid handled or previous dry running due to

inadequate venting of the pump unit.

6.1.6 Shutdown

Close the shut-off valve in the discharge line.

If the discharge line is equipped with a non-return or check

valve, the shut-off element may remain open if there is sufficient

backpressure.

Cooled mechanical seal (seal code 64)

If the pump is fitted with a cooled mechanical seal (seal code

64), vent the seal chamber as described in 6.1.1.

Switch off the motor, making sure that the unit runs down

smoothly to a standstill.

For prolonged shutdown, close the shut-off valve in the

suction line. Also close the auxiliary feed lines.

The shaft seal in pumps where the liquid is fed in under

vacuum must also be supplied with barrier liquid during

standstill.

6.2

Operating limits

The hydraulic system is designed for pure or slightly

contaminated liquids (max. solids content: 20 ppm). Make sure

that the operating limits indicated in the order confirmation are

complied with.

In the event of frost and/or prolonged shutdowns, the pump

must be drained or otherwise protected against freezing.

6.2.1 Temperature of the fluid pumped

The pump must not be operated at temperatures exceeding

those specified on the name plate or in the technicaldata sheet.

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6.2.2 Switching frequency

Prolonged shutdown periods should be avoided in the case of

pumps in material variants 10, 13, 20 and 21 (cast-iron

variants), particularly if the pumps are handling aggressive

water qualities (high oxygen content). In such cases, the pump

should remain filled, and the operation check run should be

performed at least every other day, instead of once a month or

once every 3 months (see also 6.1.5).

In the event of frost and/or prolonged shutdowns, the pump

must be drained and protected against freezing and corrosion.

To drain the pump, open drain plug 6B.

The permissible number of start-ups in a given period of time

depends on the circumstances prevailing in the plant and the

operating conditions. Overloading of the motor may generally

result in:

an abnormal increase in motor temperature exceeding the

temperature limit of the winding or bearing grease

premature coupling wear

reduced service life of the pump components

irregularities or malfunctions in the plant

To prevent abnormal temperature increases in the motor and

excessive loads on the motor, coupling, pump, seals and

bearings, the switching frequency must not exceed the

following number of start-ups per hour (h):

In the case of horizontal pumps, virtually

Caution

complete drainage of the stage casings in

installed condition can only be ensured by opening the plugs on

the stage casings (optional). If this is not possible, it is

recommended to remove the pump from the system and

proceed according to section 6.3.2.

Motor rating

Max. start-ups/h

up to 3 kW

6.3.2 The pump is removed from the pipe and stored

Before putting the pump into storage, carry out all checks and

maintenance work specified in section 7.1. Then preserve as

follows:

from 4 to 11 kW

from 11 to 45 kW

45 kW and higher

Drain the pump as completely as possible. On vertical pumps,

this can be done by opening the drain plugs on the suction

casing.

Horizontal pumps with drain holes in the stage casings

(optional) can be drained almost completely by opening the

drain plugs. The pump can also be drained by bringing it into a

vertical position - suction nozzle pointing downwards - by crane

(see 3.1). Turn the rotor by hand. However, the seal housing

must still be drained separately by opening the respective drain

plug.

6.2.3 Minimum flows

The pump must not be operated against a closed gate valve.

The minimum flows required are defined as follows.

For MTC 32, MTC 50 and MTC 65, the required minimum flow

for continuous operation is:

-10 to + 100 LC

15 % of Qopt

20 % of Qopt

25 % of Qopt

t > 100 to + 140 LC

t > 140 to + 200 LC

If the pump cannot be drained completely, we

recommend to dismantle it and dry the individual

components.

For MTC 100, MTC 125 and MTC 150, the minimum flow

required for continuous operation, independent of the

temperature, is:

Afterwards fill the pump with a water-repellent preservative, e.g.

RUSTELO DEWATERING 924 (producer CASTROL)

OSYRIS DW (producer TOTAL) or equivalent.

Turn the pump rotor by hand several times, to ensure even

distribution of the preservative. Then drain the pump and close

the suction and discharge nozzle.

0.35 x Qopt.

For MTC 100, MTC 125 and MTC 150 an additional, short--term

minimum flow of 0.25 x Qopt. has been defined, which is

permitted for up to 1 hour’s uninterrupted operation and approx.

200 h/year.

The minimum flows indicated for MTC 32 to 150 above are for

single pump operation and will prevent thermal and mechanical

overloading of the pump. In case of parallel operation with

pumps of identical or different design higher flow rates may be

required in some cases, to guarantee a stable operating

behaviour.

Exposed blank metal parts must be treated with a suitable

anti-corrosive agent.

If the pump is preserved for a prolonged storage

Caution

period with KLÜBERTOP K 01-601 or another

glycol-base preservative, the preservative must not be drained.

In this case, the pump must be completely filled with

preservative for storage. The preservative must be drained

before the pump is returned to service. It can be re-used. Before

re-use, make sure that the water content in the preservative

does not exceed 20%.

6.2.4 Density of fluid pumped

The pump input power will increase in proportion to the density

of the fluid handled. To avoid overloading of the motor and

pump, the density of the fluid must comply with the data

specified on the purchase order.

6.4

Returning to service after storage

Before returning the pump to service, carry out all instructions

laid down in the sections on ”Commissioning” (6.1) and

”Operating limits” (6.2).

6.3

Shutdown / Storage / Preservation

Immediately following completion of the work, all

safety-relevant and protective devices must be re-installed

and/or re-activated.

6.3.1 The unit / pump remains installed; periodic check of

operation

In order to make sure that the pump is always ready for instant

start-up and to prevent the formation of deposits within the

pump and the pump intake area, start up the pump set regularly

once a month or once every 3 months for a short time (approx. 5

minutes) during prolonged shutdown periods. Follow the

instructions for commissioning (see 6.1).

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7.2.2 Bearings and lubrication

Servicing / maintenance

On grease-lubricated units, the rolling element bearings of the

MTC32 and the non-drive end rolling element bearings of the

MTC50 and MTC65 in design C and D are lubricated for life and

do not require re-lubrication. For this reason, no lubricating nip-

ples are provided on the bearing brackets.

7.1

General instructions

The operator is responsible for ensuring that all maintenance,

inspection and installation work be performed by authorized,

qualified personnel who are thoroughly familiar with the

manual.

A regular maintenance schedule will help avoid expensive

repairs and contribute to trouble-free, reliable operation of the

pump with a minimum of maintenance expenditure and work.

Before commencing any work on the unit, always

make sure that the drive unit (electric motor, turbine,

I.C. engine, ...) cannot be started up.

Pump

Depending on the pump version, the rolling element bearings

are either grease-lubricated or oil-lubricated.

Grease quality / Grease change

The bearings are packed with high-quality lithium-soap grease.

Depending on the size and the operating hours of the pump, the

rolling element bearings must be re-lubricated or the grease in

the rolling element bearings must be replaced.

Pumps handling liquids posing health hazards must

be decontaminated. When draining the fluid pumped

see to it that there is no risk to persons or the environment.

All relevant laws must be heeded.

Speed (1/min)

7.2

7.2.1 Supervision of operation

The pump must run quietly and free from

vibrations at all times.

The pump must never be allowed to run dry.

Servicing / Inspection

Size MTC

32-50-65

100-125

150

< 1800

10000h

9000h

8300h

W 2950

7200h

5700h

4000h

W 3550

5700h

3900h

3100h

Caution

Max. permissible room temperature 40 LC.

If re-lubrication intervals are short, we recommend to

completely replace the grease once a year. If this is not the

case, the grease fill must be replaced completely at least every

two years. For this purpose, the rolling element bearings must

be removed, cleaned and packed with new grease.

Under unfavourable operating conditions, e.g. high ambient

temperature, high atmospheric humidity, dust-laden air,

aggressive industrial atmosphere etc., the bearings shall be

checked earlier and cleaned and packed with new grease, if

required.

The bearing temperature may exceed room temperature by up

to 50 LC, but must never rise above 90 LC (measured on the

outside of the bearing bracket), see also section 7.4.4.1.

Do not run the pump against a closed shut-off valve for

prolonged periods of time so as to avoid heating up of the

fluid pumped.

Caution: For required minimum flows please refer to section

6.2.3.

During pump operation the shut-off valve in the suction

line must not be closed.

Use a high-quality lithium-soap grease, free of resin and acid,

not liable to crumble and with good rust-preventive

characteristics. The grease should have a penetration number

(NLGI class) between 2 and 3, corresponding to a worked

penetration between 220 and 295 mm/10. Its drop point must

not be below 175LC. The bearing cavities must only be

half-filled with grease.

If required, the bearings may be lubricated with greases of other

soap bases. Since greases of differing soap bases must not be

mixed, the bearings must be thoroughly cleaned beforehand.

The re-lubrication intervals required must then be adjusted to

the greases used.

The mechanical seal shows only slight or invisible (vapour)

leakage during operation. It is maintenance-free.

Gland packings must leak slightly (individual drops).

Any stand-by pumps installed shall be switched on and then

immediately off again once a week to keep them operational.

Attention shall be paid to the correct functioning of the auxiliary

connections.

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Oil quality / Oil change

7.2.3 Shaft seal

Quality: ISO VG 46.

Mechanical seal:

The mechanical seal is maintenance-free.

The first oil change shall be carried out after 300 operating

hours, the following ones every 3000 operating hours.

Unscrew the screwed plug in there-fill holeand inthe drainhole.

Allow the bearing housing to drain completely, then plug the

drain hole again.

Gland packing:

The nuts at the gland cover must only be tightened slightly. The

gland cover must be at right angles to the shaft. After the pump

has been primed and prior to start-up, make sure the gland

packing is set to allow a larger amount of leakage. After

approximately 1 operating hour, tighten the nuts at the gland

cover gradually until leakage has been reduced to individual

drops (approx. 7 l/H).

7.2.4 Coupling

If the flexible coupling elements begin to show signs of wear,

they must be replaced in due time and pump/motor alignment

must be checked.

7.3

Dismantling

If you need additional information or instructions please

contact KSB’s customer service !

7.3.1 General instructions

Drainage / Cleaning

Fig. 16 Oil fill

Hinge down the constant-level oiler 638.

If the pump was used for handling liquids posing health

hazards, see to it that there is no risk to persons or the

environment when draining the fluid. All relevant laws must be

heeded. If required, wear safetyclothing anda protectivemask!

The flushing liquid used and any liquid residues in the pump

must be properly collected and disposed of without posing any

risk to persons or the environment.

Pour in the oil through the hole after having hinged down the

reservoir of the constant-level oiler until oil appears in the

vertical portion of the connection elbow (Fig. 16). Then fill the

reservoir of the constant-level oiler with oil and snap it back into

operating position. After a short time check whether the oil level

in the reservoir has dropped.

It is important to keep the reservoir two thirds full at all times!

Lubricant quantities

Grease quantities

7.3.2 Preparations for dismantling

Make sure to switch off the pump unit before

Caution

starting any dismantling activities. Secure the

pump so as to make sure it cannot be switched on accidentally !

The shut-off valves in the inlet / suction and discharge pipes

must be closed and secured against inadvertent opening.

The pump must have cooled down to ambient temperature.

Pump pressure must have been released and the pump must

have been drained.

Quantity per bearing unit in g

Pump size

Drive end

Non-drive end

50 / 65

100 / 125

150

Noxious, explosive, hot or other hazardous fluids shall be

drained without posing any risk to persons or the environment.

We strongly recommend to flush the pump after drainage.

Flushing and cleaning the pumpis anabsolute necessitybefore

sending the pump to the workshop. In addition, the pump must

be supplied with a cleaning certificate.

After a prolonged period of operationthe individualcomponents

may be hard to pull off. We recommend to use a brand name

penetrating agent or a suitable puller.

Note: On some pump designs the rolling element bearings are

lubricated for life. These pumps are not provided with a

lubricating nipple on the bearing bracket.

Oil quantities

)

Oil quantity in ml *

Pump size

Drive end

330

Non-drive end

Under no circumstances use force.

330

Dismantling must only be carried out in accordance with the

sectional drawings at the end of these operating instructions.

(see section 9 ”General assembly drawings”)

Heavy components must be sufficiently supported during

dismantling. The components shall be marked with their

sequence of dismantling, to make sure they will be

re-assembled in the correct sequence.

500

490

510

100 / 125

150

880

920

1000

1040

Thoroughly clean all dismantled components and check their

condition. Careful examination may help to find the cause for

pump failure, if any. If in doubt, replace the components. Always

replace parts which are subject to wear (gaskets, O-rings,

casing wear rings, rolling element bearings).

*) oil quantity without oil fill in the reservoir of the constant-level oiler

Motor

Motors without lubricating nipple: The rolling element bearings

have been lubricated in the supplier’s factory for an operating

period of 15,000 h or 2 years under normal operating

conditions.

Motors with lubricating nipple: The rolling element bearings

must be re-lubricated at the intervals indicated on the motor

name plate (approx. 500 h).

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7.3.3 Dismantling the bearings

The sections below describe partial dismantling (bearings,

seals, etc.) and complete dismantling of the pump unit.

Shaft in 1.4021 / 1.4462

7.3.3.1 Dismantling the non-drive-end bearings

Plain bearing

The plain bearing is removed without dismantling the hydraulic

section of the pump.

Axial suction nozzle:

Fig. 19

Rolling element bearings:

If the pump is oil-lubricated, drain the oil before dismantling.

Unscrew bolts 901.4 or 914.5 and remove non-drive-end

bearing cover 361.1 or 361.2.

Unscrew nut 920.7 with lockwasher 931 or the nut with

castellated nut 920.6.

Pull out sleeve 520.2 with rolling element bearing 320.2.

Grease lubrication with lip seal

Multitec 32 - 125

Multitec 150

Fig. 17

Pull off bearing cover 160.2 using forcing screw.

Remove circlip 932.1 (shaft in C45) or bolt 901.2 and disc

550.7 (shaft in 1.4021 / 1.4462).

Take out bearing sleeve 529.

Pull out bearing cartridge 381 with its two O-rings 412.2.

N.B.: Anti-rotation pin 561.1 remains in position.

Radial suction nozzle:

Fig. 20

Fig. 21

Oil lubrication with lip seal

Multitec 32 - 125

Multitec 150

Fig. 22

Fig. 23

Fig. 18

Undo bolts 901.3 and remove cover 160.1 with O-ring 412.3

and bearing cartridge 381 with O-rings 412.2.

Remove circlip 932.1 (shaft in C45) or bolt 901.2 and disc

550.7 (shaft in 1.4021 / 1.4462).

Oil lubrication with labyrinth seal

Multitec 32 - 125

Multitec 150

Pull out bearing sleeve 529.

Remove disc 550.6.

N.B.: Anti-rotation pin 561.1 remains in position.

Fig. 24

Fig. 25

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7.3.3.2 Dismantling the drive-end rolling element bearings

N.B.: The ceramic bearing installed at the non-drive end need

not be dismantled in order to remove the drive-end rolling

element bearings. If the pump is oil-lubricated, the oil must be

drained before dismantling.

The rotating unit is adjusted axially by means of

spacers 551.1. When reassembling the pump

after partial dismantling (bearing or seal replacement), the

same spacer discs 551.1 must be mounted on the bearing side

to reproduce the original rotor adjustment.

Caution

After loosening the grub screw in the coupling hub pull out

coupling half with key 940.3.

When dismantling keywayed nut 920.6, all relevant positions

such as sequence and orientation of the contact face must be

marked accordingly, to ensure identical reassembly (see also

section 7.4.4).

Grease lubrication (figs. 26 and 27)

Remove joint ring (V-ring) 411.7.

Undo bolts 901.1.

Remove bearing cover 360.1.

Undo nut 920.2 with lockwasher 931 or nut with locknut

920.6, depending on the pump size. To undo the nut, hold

onto shaft with key 940.3.

Oil lubrication with lip seal (fig. 28)

Undo screws 914.4 and pull out together with washer 550.10

and O-ring 412.12.

Remove bearing cover 360.2.

Pull off sleeve 520.4 with ring 500.1 (tolerance ring) and

O-ring 412.11.

Pull off sleeve 520.1 with rolling element bearing(s) 320.1.

(The shaft is centered in the sleeve without locking device.)

Remove spacers 551.1, see text above.

Note: Pump versions V, Vx, E, Ex, F, Fx of sizes 32, 50,65 do

not have a fixed bearing as this function is taken over by the

motor bearings.

On pump versions Multitec V100, 125 and 150 the fixed bearing

is located in the support lantern 342. Dismantling and

installation shall be performed in analogy with the horizontal

versions.

Oil lubrication with labyrinth seal (fig. 29)

Pull out labyrinth ring 423.2.

Undo screws 914.4 and pull out together with washer 550.10

and O-ring 412.12.

Remove bearing cover 360.2.

Grease lubrication

Pump version V, MTC 100/125/150

(grease lubrication only)

Fig. 27

Fig. 26

Oil lubrication with lip seal

Oil lubrication with labyrinth seal

Fig. 28

Fig. 29

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7.3.4

Gland packings

Dismantling and replacement of shaft seal

7.3.5 Dismantling the mechanical seal

7.3.5.1 Dismantling the mechanical seal

7.3.4.1 Replacing the packing rings

Access to packing rings without removing the bearing or the

lantern:

Remove the bearing as described in sections 7.3.3.1 and

7.3.3.2.

On grease-lubricated pumps, pull V-ring 411.6 off spacer

sleeve 525.1.

Remove O-ring 412.10.

Pull off spacer sleeve 525.1.

Remove any auxiliary pipework (circulation, etc.),

depending on the pump version.

Loosen the nuts 920.3 on the mechanicalseal coveruntil the

spring is relaxed.

Undo both nuts 920.3 and pull gland cover 452 out of seal

housing 441.1.

Remove packing rings 461.

7.3.4.1

Replacing the shaft protecting sleeve

Remove the bearing as described in sections 7.3.3.1 and

7.3.3.2.

Remove packing rings as described in section 7.3.4.1.

On grease-lubricated pumps, pull V-ring 411.6 off spacer

sleeve 525.1.

Remove bearing housing 350.1.

Take off mechanical seal cover 471.1 with the seat ring and

gasket 400.1, remove spring-loaded ring (not in case of

bellows-type seals).

Remove O-ring 412.10.

Pull off spacer sleeve 525.1.

Remove key 940.2.

Pull off sleeve 523.1 with the rotating assembly of the

mechanical seal. (Two holes are provided in the sleeve for

engaging a puller.)

Take off seal housing 441.1.

Remove O-ring 412.4.

Remove bearing housing 350.1.

Remove seal housing 441.1 with gland cover 452.

Remove key 940.2.

Take off sleeve 524 with a puller,

using the groove provided in the sleeve.

Remove O-ring 412.4.

N.B.: If sleeve 524 is hard to remove, the balance drum can be

used for leverage.

Remove balance drum 59-4, disc 550.3 and sleeve 524 with

a puller engaged in the threaded holes on the drum.

This is not possible on pumps without balance drum.

Fig. 32

Fig. 30

Pump design without balance drum

Fig. 31

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7.3.5.2 Removing an air-cooled mechanical seal

(seal code 64)

7.3.5.3 Removing a water-cooled mechanical seal (seal

code 64)

Fig. 33

N.B.: This mechanical seal design is used for application

temperatures from 140 to 200LC and Multitec sizes 32 to 100.

The pump shall only be coupled toa motorwith enclosureIP 55.

Fig. 35

Note: This mechanical seal design is used for temperatures

from 140 to 200LC and sizes 125 and 150 (optional for sizes

32 to 100).

Remove the bearing as described in sections 7.3.3.1 and

7.3.3.2.

Remove O-ring 412.10.

Pull off spacer sleeve 525.1.

Loosen bolts 901.11.

Drain the pump and remove the circulation line at the

pipe union 731.15.

Remove the rolling element bearing as described in sec-

Remove bearing housing 350.1.

Remove mechanical seal cover 471.1 with the seat ring and

gasket 400.1.

tions 7.3.3.1 and 7.3.3.2.

Remove key 940.5.

Remove O-ring 412.10.

Pull off spacer sleeve 525.1.

Undo nuts 920.3.

Remove bearing housing 350.1.

Remove mechanical seal cover 471.1 with the seat ring

and gasket 400.1.

Pull off sleeve 523.1 with the rotating assembly of

mechanical seal 433.7. (Two holes are provided in the

sleeve for engaging a puller.)

Take off seal housing 441.4.

Remove O-ring 412.4.

On between-bearings pumps (pump version C or D) the

mechanical seal shall be removed as follows:

Remove key 940.5.

Remove screws 900.2 and hood 683.1.

Undo axis 87-5 with fan impeller 831.1.

Pull off sleeve 523.1 with the rotating assembly of mech-

anical seal 433.7. (Two holes are provided in the sleeve

for engaging a puller.)

The threaded insert 915 must remain in the shaft 210.

On previous versions (prior to 03/2002) and if

Remove cooling jacket 66-2.

Take off seal housing 441.4.

Remove O-ring 412.4.

Caution

assembled in the factory, the fan shaft 87-5 was

fitted using Loctite 222.

On previous versions and when re-assembling,

secure fan shaft 87-5 and fan impeller 831.1 with

Caution

7.3.5.4 Removing a double-acting mechanical seal

Mechanical seals in tandem andback-to-back arrangementare

fitted as per customer specifications. There is a wide variety of

variants, types and brands. Please refer to the general

assembly drawing and the documentation supplied with the

pump for orientation.

Loctite 222.

Remove support 59-7.

Remove the bearing as described in section 7.3.3.1 as well

as spacer sleeve 525.1 and bearing housing 350.1.

Remove the mechanical seal as described above.

Fig. 34

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Multitec

7.3.6 Dismantling the hydraulic system

7.3.7 Recommended spare parts stock for 2 years’

Remove the bearings as described in sections 7.3.3.1 and

7.3.3.2 and the shaft seals as described in sections 7.3.4

and 7.3.5.

continuous operation

We recommend to replace various wear parts,

Caution

e.g. rolling element bearings, sealing elements,

circlips, etc.) whenever the hydraulic system has been

completely dismantled.

If possible, place the hydraulic system in vertical position and

start dismantling it from the discharge end.

Undo the four tie bolts 905.

Remove discharge casing 107, then dismantle the hydraulic

elements.

Part No. Description

Number of pumps

(including stand-by pumps)

6+7 8+9 10 and

Note: Pump versions A/B/C/D in material variants 22/23/30

have an intermediate bearing in the middle stage as of the

number of stages given in the table (see fig. 36).

For shaft seal codes 65 and 66 (gland packing)

210

230

231

320.1

320.2

381

Shaft with small parts

Impeller (set = S)

Suction stage impeller

Fixed bearing (set)

Radial bearing

Bearing cartridge

V-ring (set)

30 %

50 %

Pump size

100

125 150

No. of stages

411

12 150 %

412

461

502

520

524

525

529

540

O-ring (set = S)

Gland packing (set)

Casing wear ring (set)

Sleeve

Shaft protecting sleeve

Spacer sleeve

Bearing sleeve

Bush

50 %

30 %

50 %

30 %

550.1

59-4

Disc

Balance drum

For shaft seal codes 61, 62, 63 and 64 (with mechanical seal)

433

523

Mechanical seal (compl.)

Shaft sleeve (set)

90 %

50 %

For oil lubrication

421

423

Lip seal

12 150 %

90 %

Labyrinth ring

230.1

171.5

540.3

Fig. 36

1) pump sizes 125 and 150 only

2) pump sizes 32 to 100 only

3) parts 461 and 524 are not fitted

4) depending on pump version

540.3

171.5

Intermediate bearing - bush

Intermediate bearing - diffuser

Note: Please always indicate the works number stamped onto

the pump name plate when ordering spare parts.

7.4

Reassembly

The pump shall be reassembled in accordance

Caution

with the rules of sound engineering practice.

Under no circumstances use force.

Due to their weight, some pump components must be

supported during reassembly.

Before reassembly, the locating surfaces of the individual

components must be coated with a mounting aid in

compliance with hygienic and safety regulations.

The properties of new pump components must not be

altered without prior consultation with our technical

departments.

The parts must be clean and free from shavings or dust.

Reassembly is effected in reverse order to dismantling.

The tightening torques indicated must be complied with.

Avoid the use of mounting aids as far as possible. Should a

mounting aid be required after all, use a commercially

available contact adhesive, e.g. Pattex, Hylomar or Epple

33, after prior consultation with our technical departments.

The adhesive shall only be applied at selected points and in

thin layers. Do not use cyanoacrylate adhesives

(quick-setting adhesives).

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Multitec

7.4.1 Tightening torques - Tie bolts, part No. 905

Tighten the gland cover by hand at first. Use a feeler gauge to

check the level position of the gland cover. It must be easy to

turn the rotor by hand.

Leakage is normal during pump commissioning. After approx. 5

minutes’ operating period, the amount of leakage can be

reduced by steadily tightening the nuts of the gland cover by 1/6

of a turn. Keep an eye on the amount of leakage and the water

temperature. It takes several hours of pump operation for the

gland to be adjusted completely. There must be a high leakage

rate during the running-in period.

Material codes 10, 11, 12, 13 (casing: cast iron)

Pump size

Tightening torque Nm

Multitec 32

Multitec 50

Multitec 65

Multitec 100

Multitec 125

Multitec 150

140

250

395

600

700

Repeat this procedure every 5 minutes until a minimum value is

reached.

Material code 20 to 30

(Casing: steel or stainless steel)

Pump size

Dimensions in

Pump size

Operating pressure Tightening torque

(bar)

32 - 50 - 65

100

125

150

Multitec 32

Multitec 50

Multitec 65

Multitec 100

Multitec 125

150

240

Packing

10 j

12,5 j

16 j

cross-section

Length of

packing cord

430

All

≈181

≈223

≈254

≈306

680

Number of

packing rings

1370

1500

2000

≤ 40

> 40

Multitec 150

Stuffing box housing

7.4.2 Reassembly of hydraulic system

Reassembly of the hydraulic system starts at the suction end

and proceeds towards the discharge end. It is advisable to

place the pump in vertical position for reassembly. The

sequence of reassembly does not pose any special problems

and shall be realized in accordance with the detailed sectional

drawing and list of components. The components shall be

re-installed in the same place as before dismantling.

A clearance of 0.7 to 1.2 mm shall be set between the last

impeller 230.1 or 230.3 and the balance drum 59-4 (or spacer

sleeve 525.4).

When tightening the tie bolts, proceed as follows:

Tighten the nuts of tie bolts 905 gently, with the pump in

vertical position.

Set the pump horizontally onto its feet on the assembly table.

Tighten the nuts of tie bolts 905 in twosteps (firststep: 50%of

Pump size

32 - 50 - 65

100

nominal torque, second step: nominal torque) in the sequence

1.4.2.3.

125

150

110

Fig. 38 Gland chamber dimensions

Fig. 37

7.4.3 Seals

Gland packing

Before re-packing, thoroughly clean the packing chamber and

the gland cover.

Packing rings must be inserted so that the cut

edge of each ring is displaced by approx. 90L to

120L in relation to the previous one.

Caution

Slip the pre-stressed packing rings onto the shaft protecting

sleeve, press home the first packing ring with the help of the

gland cover. Each packing ring must be pressed into the

packing chamber individually, using the gland cover.

On gland packings with lantern ring (for vacuum operation), the

lantern ring is mounted instead of the next to last packing ring

(the last packing ring is located in the seal chamberon thepump

side).

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Multitec

Mechanical seals

Mechanical seals are precision components. The

seat ring and the spring-loaded ring must always

be replaced together, i.e. always replace the entire mechanical

seal.

7.4.3.1 Leakage at the mechanical seal

Check axial alignment of the seal.

Inspect gasket 400.1.

Remove seal cover 471.1 (471.2 for bellows-type seals) and

check position of seat ring in the seal cover.

Check the O-ring on sleeve 523.1.

Caution

To ensure trouble-free operation of the mechanical seal, the

seal faces and the tools must be absolutely clean. Mechanical

seals must be installed with utmost care.

The contact faces shall only be cleaned immediately before

assembly takes place. They must not be greasy (grease,

smudges ...) or damaged.

Individual seal components such as O-rings made of EPDM

must never come into contact with oil or grease.

Mechanical seal reassembly is effected in reverse order to

dismantling.

When mounting the spring-loaded ring, we recommend to wet

the shaft protecting sleeve with clean fluid handled.

The seat ring and the spring-loaded ring shall always be

mounted by hand resp. fingers, making sure that pressure is

applied evenly, without tilting.

Check O-ring 412.4.

7.4.4 Bearings

Plain bearing

in installation types A - B - E / Ex - F / Fx - V / Vx are re-installed in

reverse order to dismantling.

Rolling element bearings

The rolling element bearings are generally mounted on the

bearing sleeve and tightened with shaft nut 920.2 / 920.6 /

920.7.

They are re-installed in reverse order to dismantling. The

position of the keywayed nuts 920.6 (contact surface = plane

surface with recess) marked during dismantling (7.3.3.2) must

be complied with.

Check the concentricity and face run-out of ring 500.1 with adial

gauge for variants with oil lubrications.

Horizontal baseplate-mounted pump units

On pump versions C and D, the correct direction

Caution

of rotation must be observed for mechanical

seals with uni-directional springs.

Right--hand spring

Left--hand spring

Shaft

rotation:

anti-clock-

wise

Shaft

rotation:

clockwise

View

towards

the spring-

loaded ring

Fig. 39

Sealing elements

Sealing elements made of EPDM must never

come into contact with oil or grease.

Caution

Defective O-rings (which have sustained mechanical damage

such as cuts, cracks and deformation as well as changes in

properties from deposits or embrittlement) must be replaced.

Gaskets shall always be replaced by new ones.

If possible, the gasket shall be mounted without the use of

mounting aids like grease or adhesives, unless authorized

mounting aids are used.

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Multitec

When tightening the shaft nuts, please observe the following:

Caution

The shaft nuts must be tightened to the torques indicated in the table ”Tightening torques for shaft nuts”.

Tightening the shaft nuts on Multitec pumps

Shaft nuts without lockwasher

Not applicable to drive end on MTC 32/50/65 with self-locking shaft nut

Caution

Tightening torques for shaft nuts

Drive end

Non-drive end

Pump size

A, B, C, D

E,F,V

A,B,E,F,V

C,D

Nut

80 )

40 (***)

MTC 32

M 25x1,5

M 30x1,5

M 25x1,5

M 30x1,5

M 35x1,5

M 42x1,5

M 52x1,5

100 (*)

80 )

40 (***)

MTC 50

M 30x1,5

M 35x1,5

M 30x1,5

M 35x1,5

M 42x1,5

M 50x1,5

M 60x1,5

120 (*)

100

50 (***)

40 (***)

MTC 65

150 (*)

150 )

M 42x1,5

(2x)

M 42x1,5

(2x)

50 (***)

MTC 100

MTC 125

MTC 150

150 (*)

150(*)

200 )

M 52x1,5

(2x)

M 52x1,5

(2x)

60 (***)

200 (*)

250 )

M 62x1,5

(2x)

M 62x1,5

(2x)

M 62x1,5

(2x)

250 (*)

loosen after first tightening

(*) block first nut when tightening

(**) self-locking nut

(***) bend over lockwasher

Tightening the shaft nuts on Multitec pumps

Nut with lockwasher - (drive end and non-drive end on versions C and D)

1.) Tighten nut to torque M1, then loosen again

2.) Tighten to torque M2 and bend over lockwasher

Nut with locknut - drive end (and non-drive end on versions C and D)

1.) Tighten first nut to torque M1, then loosen again

2.) Tighten first nut to torque M2

3.) Tighten second nut to torque M3, at the same time blocking first nut

Nut with locknut - non-drive end (except versions C and D)

1.) Tighten first nut to torque M1

2.) Tighten second nut to torque M2, at the same time blocking first nut

Self-locking nut - old version MTC E/F/V 32/50/65 (drive end)

No torques given

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Multitec

If there is no suitable torque wrench available for tightening the

shaft nuts, proceed as follows, depending on the pump version:

After installation of the bearings, the following checks shall be

made:

Self-locking nut on drive end (or non-drive end on versions

C und D)

Grease-lubricated bearings: Check the clearance

between cover 360.1 and bearing housing 350.1 after

having tightened bolts 901.1. There should be a clearance

between 0.2 mm and 0.8 mm. Cover 360.1 must not rest on

the bearing housing 350.1.

Tighten the shaft nut firmly

Loosen the shaft nut again

Apply thread-locking agent to the thread (e.g. LOCTITE)

Moderately tighten the shaft nut

Oil lubricated bearings: Check the clearance between

cover 360.2 and bearing housing 350.1 by verifying the

dimensions prior to re-assembly (if bearings or cover have

to be replaced).

Nut with lockwasher on drive end (or non-drive end on

versions C und D)

Tighten the shaft nut firmly

Loosen the shaft nut again

Moderately tighten the shaft nut

Bend over lockwasher

Rolling element bearing sizes

Grease-lubricated bearings

0.2 ...0.8 mm

Nut with locknut on drive end (or non-drive end onversions

C und D)

Tighten the first shaft nut firmly

Loosen the first shaft nut again

Moderately tighten the first shaft nut

Block the first shaft nut with a suitable tool and tighten the

locknut firmly against the first shaft nut

Nut with locknut on non-drive end (all versions except C

and D)

Moderately tighten the first shaft nut

Block the first shaft nut with a suitable tool and tighten the

locknut firmly against the first shaft nut

Fixed bearing

The fixed bearing is the coupling-side bearing at the coupling

end. Pump size 32 is equipped with deep-groove ball bearings.

The other pump sizes are fitted with angular contact ball

bearings in X arrangement (see sectional drawing).

The spacer discs 551.1 serve to position the rotor in axial

direction.

Fig. 40

Pump size

Fixed bearing 320.1 Radial bearing 320.2

6309 ZZ C3-HT

2 x 7309 BUA

2 x 7312 BUA

2 x 7315 BUA

6309 ZZ C3-HT

6312 C3

100

Axial adjustment of the rotor is not required. The correct axial

position of the rotor is achieved by inserting spacer discs 551.1

to a total thickness of 1.6 mm (1 x 1 mm + 3 x 0.2 mm) in bearing

housing 350.1 on the side of the bearing (or angular contact ball

bearings).

125

6312 C3

150

6315 C3

Oil lubricated bearings

On the old versions, the rotor is axially positioned

Caution

0.2... 0.8 mm

by inserting spacer discs 551.1 on both sides of

the bearing (or angular contact ball bearings) to a total

thickness of 1.6 mm each.

Cover bolts 901.1 (or 901.8 for oil-lubricated bearings) must

be tightened in diagonally opposite sequence to the following

torques:

MTC 32/50/65 :

30 Nm

40 Nm

MTC 100/125/150 :

Fig. 41

The same rolling element bearings are installed for oil

lubrication as for grease lubrication.

Exception: Instead of bearing type 6309 ZZ C3-HT, rolling

element bearing type 6309C3 is used for oil lubrication.

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Radial bearing

7.5.2

Repairs

Versions C and D are equipped with a deep-groove ball bearing

as radial bearing. (The other versions are fitted with a plain

bearing in the suction casing). The outer race of the

deep-groove ball bearing must have axial play. The bearing is

installed without spacer discs 551.1.

Clearance between impeller 231 and suction casing:

Sizes 32 to 65 for material codes 10,11, 12, 13:

Re-working the suction casing and mounting a spare casing

wear ring as per ZN 1095 and re-working the impeller.

For other pump sizes and material codes:

Replacing the casing wear ring 502.1 with a spare ring as per

ZN 1095 and re-working the impeller.

Clearance between impeller 230 and disc 550.1 or casing

wear ring 502.2

(Sizes 125 and 150):

Replacing the casing wear ring 502.2 with a spare ring as per

ZN 1095 and re-working the impeller.

(Sizes 32 to 100):

Two repair methods are possible:

a) Replacing the impellers 230 and discs 550.1 by new ones.

Quick repair method, no re-work of parts required.

b) Re-working the impellers 230 at the impeller eye by deposit

welding and subsequently machining to the original diameter.

This repair method is used for impellers made of stainless steel.

Clearance gaps between impeller 230 and diffuser:

a) Re-working the impellers at the sealing gaps of the hubs.

Re-working the diffusers and installing an interstage bush as

per ZN 140.

b) Should hub thickness be insufficient after re-working, replace

the impeller or fit a spacer sleeve (see drawing below). The

spacer sleeve must be driven by the impeller key. Make sure

that the load-carrying key length in the impeller is at least 2/3 of

the total (load-carrying) key length.

Fig. 42

7.4.4.1 Temperature of the rolling element bearings

The temperature of the rolling element bearings,

Caution

which run at 3000 1/min and more, can be 90LC.

Manual temperature checks are not sufficient !

The bearings only reach their normal operating temperature

after several hours of operation.

When a new pump is started up, the bearing temperature

may exceed 95LC. After 2 or 3 operating hours it will sink

slowly and level out to a constant value after approx. 1 week.

A temperature rise may occur after service activities

comprising replacement of the bearings or dismantling of the

hydraulic system.

Should the temperature exceed 100LC during start-up, switch

off the pump and perform the following checks:

Check whether the unit is correctly aligned.

Remove the bearings, check grease quantity.

Excessive amounts of grease will cause increased

temperatures.

Verify bearing type and arrangement (see 7.4.4.4)

Re-start the pump. Ensure tight press fit between outerraces

and cover (fixed bearing).

7.5

7.5.1

Re-adjusting the clearance gaps

Maximum clearance gaps

Fig. 43

The following max. clearances on the gap diameter apply:

Installation and returning to service

Please refer to the appropriate sections of these operating

instructions.

Impellers 230 and 231

Suction side clearance gap

Clearance gap at the hub

Balance drum 59-4

0.8 mm

Suction casing 106.1 and

spacer sleeve 525.2 (C and D

versions only)

1.0 mm if the fluid is pumped

from a vessel under vacuum

conditions

2.5 mm for all other operating

conditions

Should wider clearances be found, the parts subject to wear

must be replaced.

Note: Pump performance is adversely affected by excessive

clearances. Losses in efficiency and discharge head will occur.

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Multitec

Trouble-shooting

Remedy

Cause

Pump delivers against an excessively high discharge pressure.

Re-adjust to duty point.

Check plant for impurities.

Fit one or several larger impellers.

Increase the speed (turbine, I.C. engine).

Pump or piping are not completely vented or primed.

Supply line or impeller clogged.

Vent and/or prime.

* *

Remove deposits in the pump and/or piping.

Formation of air pockets in the piping.

Alter piping layout.

Fit a vent valve.

Suction head is too high / NPSH

(positive suction head) is too low. Check/alter liquid level.

available

* * *

Fully open shut-off valve in the suction line.

Change suction line, if the friction losses in the suction line are too high.

Check suction strainer/foot valve and suction line for clogging.

2) 3)

, or

Air intake at the shaft seal.

Wrong direction of rotation.

Clean barrier liquid duct, supply external barrier liquid, if necessary

increase its pressure.

Fit new shaft seal.

Interchange two of the phases of the power supply cable.

Increase speed.

Speed is too low.

Wear of internal pump parts.

Replace worn components by new ones.

Adjust duty point accurately.

* *

Pump back pressure is lower than specified in the purchase order.

Density or viscosity of the fluid pumped is higher than stated in the pur- 2)

chase order.

* *

Gland cover too tight or askew.

Speed is too high.

Correct. Increase leakage slightly.

Reduce speed.

Tie bolts / gaskets

Tighten the bolts.

Fit new gaskets.

Worn shaft seal.

Fit new shaft seal.

Check barrier liquid pressure

2) 3)

Score marks or roughness on shaft protecting sleeve / shaft sleeve.

Vibrations during pump operation

Replace shaft protecting sleeve / shaft sleeve.

Fit new shaft seal.

Improve suction conditions.

Re-align the pump.

Re-balance the impeller.

Increase pressure at the pump suction nozzle.

The unit is misaligned.

Re-align.

* *

Pump is warped or sympathetic vibrations in the piping.

Check pipeline connections and secure fixing of pump; if required, reduce

the distances between the pipe clamps.

Fix the pipelines using anti-vibration material.

Outer bearing races of fixed bearing are loose.

Clamp outer bearing races axially.

Increased axial thrust.

Check rotor clearances, axial adjustment and clearance on throttling bush

/ balance drum.

Insufficient or excessive quantity of lubricant or unsuitable lubricant.

Non-compliance with specified coupling distance.

Motor is running on two phases only.

Top up, reduce or change lubricant.

Correct distance according to the general arrangement drawing.

Replace the defective fuse.

Check the electric cable connections.

* *

Rotor is out of balance.

Clean the impellers.

* *

Re-balance the impeller.

Defective bearing(s).

Fit new bearing(s).

Increase the minimum rate of flow.

Increase the free cross-section.

Check.

Insufficient rate of flow.

* *

Incorrect inflow of circulation liquid.

In case of parallel operation, check valve defective or missing.

* * *

Incorrect installation of gland packing,

unsuitable packing material

Check.

Inadequate cooling of shaft seal chamber

Check the free cross-section of the cooling liquid feed line.

Change in the free cross-section of the return line of the balancing liquid Check the balancing line.

Wear in balancing device Check throttling bush / balance drum clearances.

1) Pump pressure must be released before attempting to remedy faults on parts which are subjected to pressure.

2) Contact KSB

3) Pump version with barrier liquid supply on request only

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Multitec

General assembly drawing

Pump sizes 32 to 100

Radial suction nozzle

with mechanical seal

Version without balance drum

Axial suction nozzle

up to pump size 50

Axial suction nozzle

pump size 65 and above

1) for pump models with mechanical seal only

2) pump size 65 and above

3) pump size 100 and above

4) except pump size 32

5) pump sizes 32 and 50 only

6) hydraulics 9.2/10.2/11.1 and 12.1 only

7) for variant with balance drum only

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Close-coupled pump up to pump size 65

Radial suction nozzle

Vertical design

Pump sizes 32, 50 and 65

Vertical design

Pump sizes 100, 125 and 150

1) for pump models with mechanical seal only

2) pump size 65 and above

3) pump size 100 and above

4) except pump size 32

5) pump sizes 32 and 50 only

6) hydraulics 9.2/10.2/11.1 and 12.1 only

7) for variant with balance drum only

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Multitec

Pump sizes 125 and 150

Version B

Material codes 20, 21, 22, 23 and 30

Version C

Return of balancing line MTC 150, 2-pole

1) for pump models with mechanical seal only

2) pump size 65 and above

3) pump size 100 and above

4) except pump size 32

5) pump sizes 32 and 50 only

6) hydraulics 9.2/10.2/11.1 and 12.1 only

7) for variant with balance drum only

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Multitec

9.1

List of components

This list includes all components mentioned in this document

Part No.

Description

525.1/2/4

Spacer sleeve

Part No.

Description

106.1/2

107

Suction casing

Discharge casing

Stage casing

Cover

529

Bearing sleeve SiC

108.1

160.1/2

171.1

181

540.1/3

Bush

550. 1/2/3/4/6/8/9/10/11

Disc

Diffuser

551.1/2

561.1

Spacer disc

Grooved pin

Rivet

Pump stool

182

Foot

565

210

Shaft

59-4

Balance drum

230.1/3

231

Impeller

59-7

Support

Suction stage impeller

636

Lubricating nipple

Constant level oiler

Coupling guard

Hood

638

320.1/2

Rolling element

681.2

bearing

683.1

341

Drive lantern

710.1/2

723.1

Pipe

342

Thrust bearing lantern

Bearing housing

Bearing cover

Flange

350.1

360.1/2

361.1/2

731. 1/2/3/4/16/17/18

800

Pipe union

Motor

Non-drive end bearing

cover

831.1

Fan impeller

Coupling half

Axle

861.1/2/3/4

87-5

381

Bearing cartridge

400.1

Gasket

89-8

Foundation rail

Screw

411.1/2/3/4/5/6/7/8/13

412. 1/2/3/4/5/10/11/12

421.1/2/3

423.1/2

Joint ring

900.2

O-ring

901.1/2/3/4/5/6/7/8/9/10/11/12 Hex. head bolt

Lip seal

902.1/2

Stud

Labyrinth ring

Mech. seal

903.1/2/3/4/5/9/10/11/14

Screwed plug

Tie bolt

433.1/7/10

441.1/4

905

Shaft seal housing

Gland cover

914.1

Hex. socket head cap

screw

452

461

Gland packing

920.1/2/3/4/5/6/7/9/10/11

Nut

471.1/2

Seal cover

Ring

931

Lockwasher

Circlip

Key

500.1

932.1/2

940.1/2/3/4/5

950.2/3

971.1

502.1/2

Casing wear ring

520.1/2/3/4

523.1

Sleeve

Spring

Plate

Shaft sleeve

524

Shaft protecting sleeve

1) recommended spare parts (see 7.3.7 on page 20)

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Multitec

Adjusting Dimensions for Coupling Alignment, Pump sizes 32 to 65, Pump versions E, Ex, F, Fx, V, Vx

Cotes de réglage pour alignement de l’accouplement tailles 32 jusqu’à 65, Exécutions E, Ex, F, Fx, V, Vx

Einstellmaße für Kupplungsausrichtung Baugrößen 32 bis 65 Ausführung E, Ex, F, Fx, V, Vx

Bild 44

Fig. 44

Bei den Motoren für die Version Ex, Fx und Vx handelt es sich um Sondermotoren mit verstärkter Lagerung , die nicht

durch Standard-Motoren ersetzt werden können!

Les moteurs pour les versions Ex, Fx et Vx sont des moteurs spéciaux à paliers renforcés qui ne peuvent pas être

remplacés par des moteurs standard!

The motors of versions Ex, Fx and Vx are special motors with reinforced bearing which cannot be replaced by

standard motors!

Achtung

Attenzion

Caution

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Multitec

KSB Aktiengesellschaft

P.O. Box 1361, 91253 Pegnitz S Bahnhofplatz 1, 91257 Pegnitz (Germany)

Tel. +49 9241 71-0 S Fax +49 9241 71-1791 S www.ksb.com

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