READ THIS MANUAL CAREFULLY.

TS-EN-ISO 9001 : 2008

K - QTSE-ISO-EN

9000

CENTRIFUGAL PUMPS CARE MANUALINSTALLATION, MAINTENANCE AND

OPERATING INSTRUCTIONSN - SCP

CE

"PERFECTION IN PRODUCTS AND SERVICES"

Not: • EBITT reserves the right to make any changes in dimensions without prior notice.

• Consult to CALPEDA for any issue not included in this manual.Consult to EBITT for any issue not included in this manual.

CONTENTS

SAFETY

USER SAFETY REGULATIONS

TROUBLE SHOOTING

CARRIAGE AND STORAGE

PUMP FOUNDATION AND BASEPLATE

COUPLING ALIGNMENT

PLANT DESIGN

OPERATING WITH AIR IN THE SUCTION UNE

PUMP ASSEMBLING AND DISMANTLING

SEALING

OPERATIONAL AND OTHER PRINCIPALS

OPERATION AT CLOSED VALVE

LUBRICATON OF PUMPS

BALL BEARINGS

BEARING TEMPERATURE MEASUREMENT

INSTRUCTIONS TO BE FOLLOWED WHEN STARTING NEW PUMPS

SERVICE AND CONTROL

CHARACTERISTIC FAULTS

SECTIONAL DRAWING AND PARTS LIST

STUFFING BOX AND COUPLING SAFETY GUARDS

LUBRICATION OIL LIST

DIMENSION TABLE

1)

2)

3)

4)

5)

6)

7)

8)

9)

10)

11)

12)

13)

14)

15)

16)

17)

18)

19)

20)

21)

22)

GETTING STARTED

PURPOSE OF SAFETY GUIDE !

In order to prevent incorrect operation of the pump and accidents, instructions ofthis manual have to be read and followed carefully. Manual should be kept in easyaccess.

Installation, starting, maintenance and operation instructions for the pump includedin this manual. These instructions must be followed strictly in each phase of theoperation.

Pumps should never be operated on duty points ( capacity and head) rather thanthat specified in purchase order.EBITT is not responsible for loss or damageof any kind resulted by operation of the pump on duty point rather than specifiedin order confirmation.

This manual does not include working environment safety regulations andinstructions.

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-

-

-

1

Standart manufacture according to PN 10 DIN 2501 – ISO 7005/2

PUMP FLANGE NORM :

Do not operate the pump temperature values other than interval –10 C + 20 C

OPERATIONAL CONDITIONS :

PUMP DESIGNATION N 250 / 500

Nominal Impeller Diameter (mm)DN Discharge Flange Diameter (mm)Pump Type

• Problems caused when original spareparts are not employed are to theuser’s account.!

ATTENTION

Pumps volute must be emptiedcompletely by draning pumped medium.Safety notes must be obeyed.While carrying do not leave load hangingidle, carry load with the right equipment.Carry load in approriate quantities ofweights and dimensions.Pump dimensions are available incatalogue.Do not use flange holes and bolts of thepumps for carriage.Pump documents should be in easyaccess.

!

ATTENTION

4) STORAGE AND CARRIAGE

4-1) STORAGE

• If pump is not for immediate use, store in a dry and vibration

free place. In case of storage in open area, cover the pump

against atmospheric affects.

•

••

•

•

•

•

1) SAFETYPump installation to a system is governed by specific principals.

Principals concerning to the operation of the system that the

pumps are installed in, are not covered within the contents of this

manual.

2) SAFETY WARNINGS FOR THE OPERATOR

ATTENTION

2

•

–

–

–

–

–

–

–

–

–

–

–

–

–

–

In pumps accidents that may be caused due to cold or hot

machine parts must be reduced to safety level by taking

pumped medium temperature into consideration.

The coupling is protected by coupling guard.

Never touch rotating components when pump operates.

EBITT will not be responsible for any accidents caused

especially from the coupling guard if only the bare shaft

pump is obtained from EBITT whereas electric motor

and base plate are supplied from other resources.

All rotating parts must be guarded.

Electric motor cooling fan must be protected by guard.

Necessary precautions must be taken in pump station for

drainage and removal of the pumps against floading.

Pump should only be operated at intended duty point.

Do not touch hot pumps or components which could

possibly get hot due to operation such as bearings.

Do not let pump undergo sudden temperature changes.

Fluid density should not be higher than that specified in

purchase order.

Do not adjust flow rate by valve located at the suction

side.

Do not run pump dry. ( without pumped medium)

Do not put your hand or any other body part in holes or

gaps of the pump.

‹f warnings outlined in this manual and safety

instructions provided seperately are ignored,

accidents involving people, enviroment and

machinery will be inevitable.!

ATTENTION•

Assembly, commissioning, servicingand maintenance of the pumps mustalways be done by authorisedEBITT services. All electrical worksmust be done by by certified personnel.EBITT will not be responsible forany damages incurred by unauthorizedor uncertified persons.

!

3.1) After the pump and driver are mounted on thefoundation, check alignment. Level the unit andcorrect any angular and parallel misalignmentby using wedges. These misalignment might becaused by distortion of bedplate during handlingand shipping.

3.2) Before grouting in bedplate make sure thataccurate alignment has been made.

3.3) After grouting and tightening of the hold-downbolts check alignment again.

3.4) Check alignment once more after suction anddischarge pipes are connected.

3.5) After running the pump at the actual operatingtemperatures make a final check on alignment.

3.6) Make sure to correct any misalignment at themoment it is observed during the inspectionsstated above.

A proper careful mounting of the pump saves youfrom expenses and ensures trouble free operation.Most pump breakdowns result from the misalignmentof the pump and driver at the time of installation.Pump and motor bearing fai lures and excessivecoupl ing wear are the resul ts of misal ignment.To avoid pump problems and expensive maintenan-ce, the instructions stated below should be strictlyobserved at the time of installation.

3) PUMP TROUBLE SHOOTING

• While pump is in storage cover suction and discharge ends against entry of foreign objects.• For long term storage of pumps with mechanical seals, rotate the

shaft by hand once a week (2-3 turns) to prevent seal surfaces tostick each other and distortions.

• Do not leave fluid in the pump to prevent frezing.

4-2) CARRIAGE

•EBITT N and SCP series pumps should be carried as shown

in the following figure (Fig. 4).

4-3) PROTECTING THE PUMP

• Pump should be kept in position suitable for easy carriage. Pump

should never be moved by pushing or pulling.

• Pump should not be kept in environment with chemicals which may

cause damage.

• Pumps must be protected against freezing.

!

ATTENTION

(Fig). 4

3

WRONG CORRECT

WRONG CORRECT

N PUMP

CORRECTWRONG CORRECT

SCP PUMP

Pump must be installed on a firm and

vibration free base plate. In case of vibrations

base plate must be fixed on vibration

absorber feet.!

ATTENTION •

5) PUMP FOUNDATION AND BASE PLATEThe pump is a machine manufactured with utmoscare inprecise dimensions to meet the required performanceand operation conditions. When installed properly withappropriate pipe connections it provides years of troublefree service. For this purpose careful attention should begiven to design and manufacturing of a sufficiently firmand strong bedplate and its proper connection tofoundation. The foundation should be heavy enough toincrease rigidity of the system and absorb normal strainsand shocks which might occur during operation. As faras rigidity and absorbtion of strains and shock areconcerned, a concrete foundation based on solid groundgives the most satisfactory results. When the pump is tobe placed in a building or on steel work it should beinstalled directly over a beam or as close to a mainsupport or wall as possible. The usual sag of unsuppor-ted wooden floors causes baseplate distortion andconsequently misalignment.

Strains in suction and delivery pipes to be connected to the pumpgive rise to distortion of the pump casing and bearing framecausing shaft rubbing and consequently excessive wear andshaft failure. To avoid this adequate number of pipe supportsmust be used.

Make sure that pump base is grouted before the suction anddiscarge pipes are connected to the pump. Piping should beinstalled starting from the pump never vice-versa.

Before grouting the base plate to the concrete foundation, pumpis leveled and preliminary alingment is made. 48 hours afterlaying mortar and fixing bolts get tightened. Driver motor alingnmentcan be made after that.

To provent the bearings from being subject to undue loads, thepump must be leveled. The pump can be easyly leveled byadjusting the position of the suction and discharge flanges inhorizontal and vertical plane with aid of a small spirit level.

Leveling is also important for oil lubricated pumps to maintainequal lubrication to both bearings.

4

6.1) MAKING THE COUPLING ALIGNMENT:a) Angular alignmentb) Linear alignment

Linear Alignment

Angular Alignment

(fig) 6.1Checking alignmentwith dial gauge

(fig). 5a. Baseplate foundation detail

Baseplate

Spacer

Anchor Bolt Drive in Plug

Concrete

• For trouble free operation of the pump, accurate alignmentof the pumps and driver is essential. Misalignment mayshorten bearing life and cause excessive coupling wear,noisy pump operation and loss of power. Because of thiscoupling alignment must be made properly and must bechecked frequently.

• Flexible coupling should never be considered as cure formisalignment. Flexible coupling does not compensatemisalignment.

• Couling alignment is an adjustment to put pump and motorrotation axis’ on same line. If the pump is ordered fromEBITT together with drive motor and base plate, couplingalignment get made by EBITT before delivery. Howeveralignment made by EBITT may deviate during handlingor transport, therefore pump and drive motor has to berealigned after installation.

• Necessary tools for making coupling alignment are ; straightmetal bar (metal ruler) and calliper (if high accuracy isrequested more accurate measuring devices must be used.)

a) To check angular alignment ; distance between bothcoupling pieces (motor side and pump side) get measuredin vertical and horizontal plane. Readings taken on fouropposite points must be equal. ( Fig. 6a-b)

b) To check linear alignment a straight bar get placed oncoupling touching both motor and pump side couplingpieces. Bar must be in contact with both coupling piecesall over their surface without making an angle. This checkmust be performed in both vertical and horizontal plane,in two different locations.

(fig). 5 Common Installation

6) COUPLING ALIGNMENT

• In order to prevent vibrations fill base

plate with concrete.

!

ATTENTION

• Never remove coupling guard

while pump is running.!

ATTENTION

Depending on coupling size distance between two couplingpieces (motor side piece and pump side piece) must be2-6 mm.

Couplings must be protected by means of coupling guard.

After any installation change, all alignment checks must bemade, since any position change may cause misalignment.

Pump shaft end and motor shaft end should never be incontact.

• Rotation direction of the pump shouldalways be taken into consideration.

• Unless otherwise requested standartpump rotation direction is clockwise(wieved from motor end).

!

D‹KKAT

5

6.2) CORRECTING MISALIGNMENTS :Misalignment may occure in horizontal and/or verticalplane. Correction in vertical plane can be made by placingthin sheet metal pieces under pump feet or motor feet.Correction in horizontal plane can be made moving pumpor motor in horizontal plane as holes of pump and motorfeet have allowance for such movement.

COUPLING(ØA mm)

125-140160-180200-250280-315

400

GAP(S mm)

3-43-43-44-54-5

PARALLEL(X mm)

0.150.150.200.200.25

ANGULAR(Y mm) = Y1-Y2

0.150.150.200.200.25

Recommended coupling alignment measurenments

Set screwY1

Y2

S

ØA

(fig.): 6.2 Coupling Alignment

XX

(fig) 6

(fig.) 6.b Angular alignment in vertical plane

b

(fig.) 6.d Linear alignment in vertical plane

d

(fig.) 6.a Angular alignment in horizontal plane

a

(fig.) 6.c Linear alignment in horizontal plane

c

Coupling alignment made by using a rules and calliper asseen in fig. 6.2

•

•

•

•

6

7.5) DISCHARGE PIPE• In order to regulate flow rate and discharge pressure, a valve

should be fitted close to pumps as much as possible (4 timesof the diameter).

• In order to prevent reverse flow in discharge line a non-returnvalue must be fitted between flow control valve and pump.

• Water hammer effect in pipe installation must be calculatedand appropriate measures aganist this effect must be taken.

(fig): 8

3 D.(min)

5.D (min)

2xD

2xD D/2

(M›n

.)

D

2xD

D

3D (

min

)2D

(fig): 7/b

(fig): 7/a

Good

Good

Bad

Bad

Good

Good

Bad

min.5xD

Gate Valve

Manometer

Vacummeter

Check Valve

7xD

2D

2D 4xD

Gate Valve

Reduction

Eccentric Reduction

Bad

7.1) PIPE LINE• Pay attention to the direction of the flow• Pressure head should compensate for the loss due to friction

in the design capacity of the pipe line and loss due to fittings.• Pipe connections must be well supported against any tension

and the pump should not be exposed to pipeline load andtension.

• Precaoutions must be taken to eliminate tension may occuredue to thermal expansion, expansion joints must be employed.

• Sudden crossectional changes and directional changes must be avoided.

• Axial misalignment with the connection parts must be avoided.• Maximum suction head of the installation must be calculated.• In general flow velocity must not exceed 2m/sec in suction line

and 3,5 m/sec at discharge line.• Air gap formation within the pipe line must be prevented.

Flow must not be disturbed by misaligned connection parts.• Pump should not be exposed to weight or tensional load of

pipe line.

7) PLANT DESIGN

7.2) FLOW RATE REGULATIONDesired flow rate through pipe line can be regulated by meansof valve fitted at discharge flange of the pump. When regulatingthe flow rate water hammer effect must be avoided, position ofthe valve should not be chahged suddenly to avoid pressurefluctations. Flow rate regulation should never be made by meansof valve located at suction line / flange.

7.3) LEAKAGEStandart elements must be used for leakage prevention. Flangegasket must be in appropriate dimensions and made of suitablematerial. Gasket should not disturb the flow.

7.4) PRESSURE CONTROLTo check pressure whether it is within required interval, pressurereading can be taken by means of pressure gauges located atpump scution and discharge flanges. Locations of gauges shownin Fig 7/b.

8.1) IMPORTANCE OF SUCTION IN PUMP OPERATIONIn many cases, centrifugal pumps do not operateand function properly for reasons stated below.

1- The suction pipe diameter is too small.2- The suction pipe is not submerged deeply enough.3- Both of the above condit ions are prevalent.

If the suction pipe entry velocity is too high, avortex is formed and air is carried by vortex entersthe pump. This results in rough and noisy operation of thepump and intensive vibration which might cause shaft breakageor other damages.If the amount of air entering the pumpcasing is too high, dry operation of the pump will start andmetal seizure will occure.

These difficulties can be overcomed by selectingsufficiently large suction pipe diameters. Low entrancevelocities and properly submerged suction pipe arethe proper remedy for this kind of air problem. (Fig. 8)

8) PROBLEMS IN CONNECTION WITHTHE SUCTION PIPE

(fig): 9,1

(fig): 9,2

• Suction pipe size should never be smallerthan pump discharge flange size in mostcases it must be one size larger than pumpdischarge size.!

ATTENTION

(fig): 9,3

RIGHT RIGHT WRONG

7

D/2

Piece with45° angle

min

. 2xD

Can be applied in case of low fluid level in pit andsufficiently immersed pipe to prevent vortex.

min

. 2,5

xD

(fig): 8

Screen

Suction Pipe

min

. 2xD

D/2

~D/3

Piece with largediameter flange

min

. 2xD

D

8.2) IMPORTANCE OF SUCTION PIPE SIZE

Suction pipe should be connected to pump by reducer.Frictional loss at the suction pipe creates extra load on pumpwhile it also causes pump to operate with cavitation, evencauses no discharge flow.

Non uniform velocity distribution which causes frictional lossto increase is mainly caused by air or vapor seperation whichoccurs within pumped fluid. If fittings such as elbows and Ttype fittings located close to pump suction flanges situationbecomes more complicated. Non uniform flow or vapourseperation causes discontinuity of flow within the pump. Thisresults in hydraulic disturbance and consequently vibration,cavitation and excessive shaft bending occurs, shaft maybreak. Unless perfect suction conditions provided, velocity inshort and straight suction pipe should not exceed 2m/sec. Ifsuction pipes are long have fittings, velocity should be 1,5 or1,8 m/sec. Elbows fitted on suction pipe may causecomplications, if necessary precautions must be taken.

If elbow has to be fitted to discharge flange of the pump itmust be fitted in VERTICAL position. If it is not possible to fitelbow vertically due lack of enough space, a straight pipe withlength of at least two times of its diameter. If such a pipe isnot fitted between pump and elbow due to centripetal forcesfluid does not enter to impeller with continuity. This situationresults in unstable, noisy and inefficient operation. (fig.9)

Wrong Right

Right

Screen

Suction Pipe

Right

Wrong

8.3) OPERATING WITH AIR IN THE SUCTION LINE

Centrifugal pumps should never be allowed to operate on amixture of liquid and gases. If it is allowed, serious mechanicalproblems occur, pump efficiency drops and pump life is shortened.Even the existance of a small amount of air in the suction linecan cause a significant decrease in flow rate and consequentlyin efficiency. Only 2 % free air in the liquid decreases the capacity10 % and 4% air decreases capacity 43,5 %.

In addition to this considerable reduction in capacity and efficiencyand waste of power, the pump operates with vibration and noise.One of the most important and frequent reasons for shaft breakageis the presence of entered air. It also might be the reason for lossof suction and corrosion at greatly increased rate.

The entrance of air into the liquid being pumped may be causedby leaky suction lines and improperly packed stuffing boxes.While serious and careful measures are taken to correct thesetwo, a third and frequent air source is overlooked. This is thefree discharge of liquid above the surface ver near the placewhere suction pipe is submerged. (Fig. 9,1)

The fluid falling right on the foot valve would carry air into thesuction pipe. As a result the pump can not prime and dry runningand subsequent seizing follow.

Although the suction pipe position shown in Fig. 9,2 seems tobe uneffected by the free fall, some water currents and unseenvortices might carry an undesirable quantity of air into the pump.In any case a free fall to the suction tank should be avoided.Especially a return pipe submerged vetically and dischargingunder pressure through an orifice at the end section is a propersolution. (Fig. 9,3)

If the returned liquid contains a considerable amount of air orthe sump is small, baffles should be used as shown in (Fig. 9,1)This causes the air to seperate from the returned liquid beforeit reaches the foot valve.

The continuous existance of air and vapor in the pumped liquidis a very important problem which must be solved immediately.All return lines should be submerged in the sump and placedsufficiently far from the pump suction.

8

9) INSTALLING AND DISMANTLING THE PUMP

a) INSTALLING

– Instructions must be followed, safety instructions shouldbe obeyed and necessary safety measures must be takenduring installing pump to the plant.

– Power supply cable connection should be made at theend of installation operation.

9.1) PREPARATION FOR DISMANTLING AND ASSEMBLY

• Do not perform hydraulic test by air. Itmay cause fatal accidents

• Test pressure can be 1,5 times of thepumps duty point discharge pressure atmaximum.

• As medium use pressurized water forthe test.

!

ATTENTION

• Sufficient ventilation must be provided

to discharge heat generated within pump

room.!

ATTENTION

– Fluid in the pipe line should be drained and all valvesshould be closed.

– Before installing pump into pipe line pump shaft must berotated manually while it is coupled with motor.

– Pump, pipe line and fittings must be connected properlyand without any strain, no tension must be allowed onpipe line.

– Dismantling of the pump must be made by consideringthe markings made during installation.

b) HYDRAULIC PRESSURE TEST

– Made to test pumps strenght.

WRONG PERMISIBLE

WRONG(YANLIfi)

(fig): 9Suction piping for double suction pump SCP.

9

9.2) DISMANTLING

a) PREPARATIONS FOR DISMANTLING

Observe and follow the following while dismantling the pump.* Motor power supply must be cut, fuses must be removed.* Drive motor must be removed by removing bolts.* Suction and discharge values must be closed.* Pumped fluid must be emtied by opening drain plug

located at the bottom o the volute.* Drainage must be done by taking appropriate safety

measures if the fluid is hazardous.

• Original spare part has to be used.• When ordering spare parts; pump type,

material, pump serial number has to bestated.!

ATTENTION

b) DISMANTLING

Observe and follow the below while dismantling a pump.* During dismantling be sure about safety working conditions.* Mark the location of all the parts, their positions and mark

them with a colour or scriber while dismantling.* Do not use a hummer or similar tools while dismantling.

Use plastic hammer if necessary.* Take necessary precautions against oil leakage keeping

in mind that old oil emptied from the bearing housingand the solvents used to clean the bearings can be harmfuland polluting to the environment. Keep them in restrictedarea.

b.1) N SERIES PUMPS (Fig. 10)

* Pump suction and discharge flanges must be dismantledfrom pipe installation.

* Pump must be removed from base by taking out volutesupport foot and coupling connections.

* Bearing housing stud must be removed for dismantling thepump

* Bearing housing must be hung idle.* Bearing housing must be pulled slowly towards drive motor,

pulling must be done carefully since it may come outunbalanced.

* After removing bearing housing dismantling can proceedon an appropriate surface.

* Impeller nut must be untightened with light strokes excessiveforce should not be applied especially by using lever in theimpeller.

* Impeller must be removed from shaft by using appropriatepull out tool.

* Gland must be removed.* Stuffing box fixing bolts must be removed.* Stuffing box must be removed by pulling it axially without

damaging shaft and shaft sleeve.* Remove the cover bolts on the bearing frame that hold the

bearing housing.* Use a pull out tool or a press in tool in axial direction

without giving lateral load to remove bearings and shaft,from bearing housing.

* Remove key, shaft sleeve and bearings carefully from shaftwhich has been taken out-of bearing frame.

N PUMP

(fig): 10

165 20 5 50 70 155 153 188 134 220 200

1

60 30 11

10

b.2) DISMANTLING SCP PUMPS (Fig. 11)

• Assembly drawing must be followed

when dismantling and assembling the

pump.!

ATTENTION

SCP PUMP

(Fig): 11

9 2 9

1

49 200 31 53 55 51 67 5 22 5 61 51 55 53 31 201 48

* Dispose the oil in a cup by removing the plugs.* Unbolt the studs of the top covering.* Hold the top covering on a hanger in a that fits the lifting

eye. Mount a pull-out bolt on each hole on the flange ofthe top covering body and move the the top covering byscrewing these pull-out bolts. Lift out the cover and placeit in a suitable working area.

* Clean the liquid seal on the mounting surface of the topcovering with solvents.

* Remove the clips on the bearing housing one by one,mark them and store them safetly.

* To separate the pump and electric motor group, movethe electric motor, by unbolting the motor bolts till thecoupling pair is seperated from each other.

* The rotor group is now ready to dismantle. Raise (lift) itfrom the shaft’s packing gland area and from the freesurfaces in between the bearing housing using a, liftingbelt.

* Place the dismantled rotor group on a suitable, V-shapedsupport. Clean the bearing housing with solvent byremowing the bearing housing covers.

* Remove the shaft sleeves. The sleeves especialy whenoperating with packing form peripheral channels and wear.If the wear in the sleeves is more than 1-2 mm of thesleeves nominal diameter, the sleeves should be changed.

* Hydraulic surface of the pump’s impeller should be checked.Impeller should be changed if there are wearings andchanges in the shape that would affect the hydrauliccharacterictics and if the wearing rings are worn out andif the gap is above 0,5 mm at the radius-remove only oneof the unworn shaft sleeves, preferably the one at couplingside. Impeller should be packed out with a suitable sizepull out tool. Never use a hammer. The workers shouldtake necesarry precautions during the pulling process.

* Impeller vane directions must be taken into considerationin distmanting of the impeller. New impeller must havesame direction with one replaced.

* If wear observed on wear rings they must renewed bytaken measurement on impeller.

* After distmantling of impeller, shaft surface where impellerfitted and surfaces of the key grooves must be checkedin case of wear on these surface, shaft must be renewed.

11

10) SHAFT SEALINGIn centrifugal pumps stuffing box is the component used for

shaft sealing. Mechanical seal or soft packing are two main

elements for shaft sealing. Both elements act like bearings

over the shaft and needed to be lubricated.

* When pump operates water must leak through sealing as

droplets. Leakage must be more than 10 cm3/min and must

be less than 20 cm3/min.

* Teflon packing must be cut on the shaft it will seal, with a

knife properly as seen in fig 13

* First rings ends must meet on top second rings ends must

meet at bottom. Ring ends should not be on the same line.

* After placing first and second rings place lantern ring.

* Install and tighten the gland Then loosen the gland. Rotate

the shaft gently when shaft stops rotating do not tighten

gland more.

* After fitting gland, check stuffing box temperature.

Temperature should not exceed 70 ºC in case pumped

medium temperature is same as ambient temperature.

10.1) SOFT PACKING

10.2) SERVICING

– Remove carefully, without exerting force, damaged

and old seals from the stuffing box, through the remo-

ved seal gland and ring. Ensure no harm is done to

the seal housing surfaces.

– Remove the two lantern ring pieces found between

the seal, separately by means of a steel wire hook.

– After removing the seal found at the bottom or a

pull-out tool of its housing, clean the seal housing

throughly. Check whether the cooling/lubricating

water hole which feeds the lantern ring is clean.

• Seals with asbestos are not

used in EBITT Pumps.!

ATTENTION

(Fig). 13

• Never operate pump without packingbeing lubricated.

!

ATTENTION • Never operate the pump duringservicing the packing.

(Fig). 12

a) Soft Packing

b) Mechanical Seal

12

* Mechanical seal functioning properly will not cause observableleakage and does not need servicing.

* Check t ightness of the mechanical seal cover.* Sealing surfaces must be cleaned before installing, they

must be installed without strain and tension* Mechanical seals are manufactured according to the pumped

medium, manufacturer instructions must be referred.* Mechanical seals with external cooling must be connected

to to water supply with pressure 1 bar more than pumpsoperation pressure.

10.4) MECHANICAL SEALING

11.4) TAKING INTO OPERATION

• The Valve at the suction end should be opened completely.• The Valve on the discharge side should be shut• Check whether pump is filled with pumped medium or

not,if vacuum pump is used operate the vacuum pump tofill pump and suction line with medium.

• Start the drive motor wait until motor reacter to ratedspeed.

• Open discharge valve slowly while checking ampermeteron the control panel. Read out on ampermeter will remajnon value below motors rated current value.

• Check pressure at the discharge line. If monometer readingis below the duty point pressure close valve to obtaindesired pressure. If monometer reading is higher checkinstal lat ion and required discharge pressure.

• When pump is started for first time, it must be operatedwith duty point valves for a long time.

• Pump should only be operated by persons stated atarticle 2.

RatedPower(KW)

²5,5 7,5-15 18,5-30 37-45 55-75 90-132 160-200 250-315 ³400

Max. No.Of StartsPerHour

18 12 10 8 6 5 4 3 2

• Never apply force when fitting mechanical seal.

ATTENTION

10.3) PACKING PROBLEMSA sufficient amount of water should leak out from thestuffing box in order to lubricate the soft packing. Anexternal source of sealing liquid is required under thecircumstances given below.a) The internal pump pressure exerted on, in the

stuffing box is negative.b) The pumpage contains solids in suspension.c) The pumpage is too volatile to be a good lubricant.If the stuffing box pressure is negative, in order toprevent air from entering the pump and also to preventloss of prime and possible seizing of rotating partsa liquid barrier is necessary the sealing liquid whichpiped externally to the suffing box and distributedbetween rows of packing with the aid of the lantern ring.If a liquid containing solids in suspension is beingpumped, the amount of leakage out of the stuffingbox should be reduced to a minimum because solidsaccumulating on the packing will score the shaft sleeve.In this case external sealing with clean water is sugges-ted. The pressure of this water should be at least0,7 kg/cm2 above the pressure acting on the stuffingbox. This way a flow of water in to the pump will occurpreventing the solids from entering the stuffing box.If the pumped medium is volatile, toxic and must be keptfree of dirt, a nonsoluble lubricant should be addedto the packing. This will not only prevent the overheatingof the stuffing box but will also minimize the leakage.

11) OPERATIONAL AND OTHER PRINCIPALS11.1) SAFETY PRINCIPLES

• Pump should be filled with the medium tobe pumped and air removed. Otherwise sealsmay burn due to dry operation. Shaft sealingmay create a problem.

• Control of direction of rotation should only bedone after filling the pump with the medium.

ATTENTION

!

• If filled with hot medium, work slowly to reduce expansionand sudden temperature changes.

• If pump shaft does not rotate easyly by hand, pump shouldnot be taken into operation. Pump components are subjectto tension. In such case all connections must be untightenedpiping must be realigned. Connections get tighten withoutallowing tension.

• Flow which is appropriate at constant speed should only beadjusted through valves at the discharge side. Valves onthe suction side should be completely open. Any danger ofcavitation should be kept in mind.

• The electric panel is not within the responsibilityof EBITT and should be manufacturedaccording to EN - safety and other relatedinstructions. These instructions should beapplied by trained and authorised persons.

ATTENTION

11.2) FILLING / DISCHARGING OF BEARINGS

• The bearing housing of the pump should be filled with oil upto the indicator level before starting to operate the pump .

• Because the the viscosity of the oil increases in coldconditions, filling of the housing should be slow and withpatience.

11.3) CONTROLS PRIOR TO OPERATION

Before supplying electricity control the following :• Are all Pipe connection complete and leak proof?• Is the Valve on the discharge side shut?• Is the Valve on the suction side completely open?• Is the Motor ready for operation?• Is the Motor direction of rotation correct? (Check with a short

trial).• Are the connections axially correct?• Is the air in the pump completely discharged?• Is the pump shaft rotating easyly.

• While filling the housing with oil air bubles in the oil causes the oil level to rise. If housings are not filled with enough

oil due to this reason, the life-span of thepumps shorten.

!

ATTENTION

• Pumps should never be operated oncapacity and head rather than specifiedduty point otherwise undesired failuresmay occure.- Operation with vibration and noise- Mechanical failure- Electric motor burn- Increased energy consumption- Cavitation

• Never regulate flow with vane locatedon valve at the suction side

!

ATTENTION

11.5) STARTING FREQUENCY

A) Starting current of asynchronous electric motors is morethan nominal current this leads excessive heat in motorwindings and results in damage on pump shaft impellerand bearings. In order to prevent this starting frequency›of pumps should not excess some limits.

13

• In order to reduce failures andincrease operation life pump should notbe stopped and started frequently.!

ATTENTION

W2 U2 V2

U1 V1 W1

W2 U2 V2

U1 V1 W1

W2 U2 V2

U1 V1 W1

²3 Kw Direct( connection)

³3 Kw Direct(Æ connection)

³ 7,5 Kw( /Æ connection)

L1 L2 L3 L1 L2 L3L1

L2 L3

L1 L2 L3

B) — For the direct starting (Æ) starting current = 6 x In— For the star delta ( -Æ) starting starting current = 2 x In

In star delta starting while changing from to delta currentincrease 3 times of the nominal current. Motor moment(Mn) must be larger than pumps starting moment ( Mp)

• Duration of for the motor to accelerate from 0 rpm tonominal speed (time for transition from Æ to ) shouldnot exceed 15 sec. When % 90 – 95 0f motors nominalspeed reached starting must be changed from Æ to . Ifthis transition time limit exceeded excessive current willbe absorbed from supply and stator windings and rotorwill be damaged.

11.6) CHECKS DURING OPERATION

• Rpm and discharge head must be checked.• Vibration level must be checked.• Flow in the suction l ine must be checked.• Shaft sealing lubrication flow must be checked.• Leakage through sealing can be 01.-0.2 m3/h as vapor.

Other than this leakage as droplets allowed.• Stuffing box and lubrication fluid may be hot during

operation.• Bearing temperatures must be measured by thermometer,

they must not exceed 70°C.

• When increase in sealing fluid flow isobserved pump must be stopped andpacking must be added.

ATTENTION

!

11.8) ELECTRIC MOTOR

• Generally used electrical motors are according DIN, IEC,VDE ve TSE standarts, Three phase, 50 Hz, Finsulation,IP54 (55) protection class, S1 operation, fan cooledsquirrel cage.

• Starting method upto 5,5 Kw direct, 7,5 Kw and above stardelta.

• Refer to motor catalogues for motor details.

11.7) OTHER PRINCIPLES

• Before stopping the pump the discharge side valveshould be closed and should remain closed after stoppingthe pump. To avoid pump internal from freezing (also for

the system) empty the pump casing by releasing the plugunder the casing.

• Ensure safety to human and environmentwhen pumping medium having explosive,parsonous, hot or crystal form propertiesuse a by-pass line to drain.

ATTENTION

!

At the design stage of an installation, pump capacities usuallydetermined, according to maximum capacity needed by plant orestimations of future requirements. In such cases pumps mustoperate with throttling to meet actual required capacity. If pumpoperates with throttling for a long time life of the pump decreasesand maintenance costs increases considerably.With throttling, a small percentage of optimum operation capacitydelivered by pump.The difference between power input to the pump and powerdelivered to water by pump transferred to pumped fluid in theform of heat. Generated heat may not be disposed by pumpcasing and may result in excessive heat increase of the pump.Other problem that could occur with throttling; hydraulic radialforces can not be balanced. This causes shaft to bend. Pumpoperates with noise and excessive vibration. These unbalancedforces may result shaft and bearing failure.

12) THROTTLING

• The electric motor and panel should beconnected according to the circuit diagramand should be performed by a licencedpersonnel.

(Fig) 14

By-Pass Line

SUCTION

By-Pass Line

TO PROCESS

THOTTLE VALVES

FLOW CONTROLVALVE-NORMALLY CLOSED

SUCTION TANK

14

If throttling must be made while by-pass line is fully open actualmanometric head and capacity values of the installation shouldbe re-evaluated and new values must be taken intoconsideration.Pump should never be operated continiously in throttling especiallywhen the medium contains abrasive particles. Abrasion increasesconsiderable in throttled operation and impeller gets damagedwithin a couple of weeks.

Grease lubricated bearing ofSCP series pump.

Grease Nipple

(fig): 15.1

Oil lubricated bearing ofN series pump.

(fig): 15.2

Max. oil levelOil filling plug

Required oil level

Oil eye

Oil drain plug

13.2) OIL LUBRICATED BEARINGS

For these pumps No 30 (e.g. Shell Tellus 46 or equivalent) oil isrecommended. This oxidation resistant oil can be used for lowtemperature operation as well.They endure moisture, corrosion, bubbling and low temperatures.(fig 15.2).For lubricants see page 23.

• Do not operate the pump with throttle

for a long time

ATTENTION

!

EBITT grease or oil lubricated pumps are designed for easymaintenance.

13.1) GREASE LUBRICATED BEARINGSFor these pumps, lithium soap Class 3 (e.g. Shell Alvania R 3 orequivalent) bearing grease is recommended. This oxidationresistant grease can be used in a wide range of temperaturesand for a large variety of services. It is suitable for hot, cold, dry,wet, clean, and dirty working conditions. Grease seals preventmoisture and dirt from entering the bearings. (Fig 15)After about three months of operation (2000 hours) grease shouldbe added to the bearings. Using shorter intervals might result inoverheating and consequenty shortens bearing life.

13) LUBRICATION OF PUMPS

• Fill the bearings with a necessaryquantitiy of oil.

• Do not over fill

ATTENTION

!

13.3) SAFETY RULES

• Explosive, poisonous hot liquids may be hazardous tohumans and environment.• After draining such medium from the pump, pump interior

must be cleaned.• Chemicals and solvents used for cleaning may be hazardous

for environment and humans do not let these chemicals tocontaminate working environment and suction basin.

• Dismantling and assembling places must be clean.• Appropriate and safe tools must be used for assembly and

dismantling.

15

For long life and trouble-free service the below stated suggestionsshould be strictly followed.

14.1) CLEANLINESSThe very first requirement is cleanliness. 90 % of bearing failuresare caused by dirt. Suggestion given below must be strictly followed.1- Never open housings unless it is a must.2- Wash hands. Wipe out dirt, particles and grease off tools.3- Spread clean paper on work benches. Place the tools you

cleaned and ball bearings on this clean paper only.4- Bearings, bearing housings and shaft should be covered with

a clean cloth when they are not being used.5- Keep new bearings in their original package until the time of

use.6- Before reassembly clean shaft and housing with an appropriate

and clean solvent.

14.2) EXTRACT BEARINGS WITH CARE

1- While pulling or inserting the bearing use a sleeve or pullerwhich contacts the inner race only. (Some double suction pumpsare the only exception to this. In these pumps the housing isused to pull the bearing.)

2- Never apply force on the balls or ball cages. Press only againstthe races.

3- Never cock bearings. Only a sleeve which is cut square, or apuller which is adjusted square should be used.

4- If the bearing housing is being used to pull the bearing, makesure to pull evenly and never hammer on housing or shaft.Since both are races locked, hammering affect the balls anddestroy the bearing.

14.3) BEARINGS AND SHAFT INSPECTION1- Inspect the bearing carefully for flat spots, nicks or pits on the

balls or races. In the presence of any of these scrap the bearing.Bearings should not be used unless they are in perfect conditions.

2- Turn bearing slowly by hand see if it moves smoothly and quietlywithout any resistance or noise. If it does not scrap it.

3- Do not hesitate to scrap it if you have the slightest doubt aboutthe condition of the bearing. Paying only a little for a new bearingwill save you time and possible pump damage. Replace bearingsat each overhaul especially when running under severe or criticalcircumstances.

4- Check the shaft to see if the bearing seats are smooth and freeof burrs. Smooth burrs with crocus cloth. Shaft measures shouldbe in accordance with given tolerances. Make sure that shaft

shoulders are square and do not run over.

14) BALL BEARINGS

• Bearing temperature should

not exceed 75°C.

ATTENTION

!

14.5) CAREFULL INSTALLMENT

1- Oil bearing seat on shaft lightly.2- Make sure that shields, if any are facing the right direction. Angular contact bearings should also face in the proper direction. If dublex bearings are used be careful that they are installed with proper faces together. Ways of installment differ depending on the model. Therefore refer to instruction books and catalogs for specific pumps.3- While inserting, press bearing on squarely and never cock it

on the shaft Remember that pressing sleeve must be clean, cut square and in contact with the inner race only.

4- The shaft shoulder supports and squares the bearing. Thereforepress bearing firmly againts the shoulder.

5- Take special care that snap rings are correctly installed. That flat side must be against the bearing. Be sure lock nuts are tight.

6- Lubricate as suggested in the bearings instruction book.

14.4) CHECK NEW BEARINGS• In selecting a bearing make sure it is of correct size and type.

For example, an angular contact bearing which is dimensionallythe same as a deep groove bearing may fit perfectly in thepump. But while the second one is suitable for and thrust inboth directions the first one can resist thrust only in onedirection. Also make sure that the shields, if any, are the sameas in the original unit. To choose the right bearing refer topump catalogs and bearing instruction books.

• Bearing replacement : Depends on Operational conditions. Ingeneral bearings must be replaced after 20.000 – 40.000hours of operation.

• Oil gasket O-ring, Gasket replacement : On every dismantlingthey must be replaced.

Pump Speed Oiling Period

1000 rpm

1500 rpm

3000 rpm

4400 Operation hours

3000 Operation hours

2000 Operation hours

14.6) SUGGESTED OILING INTERVALS

Usually bearing temperatures are checked by touching the bearinghousing with the hand. If it feels “cool” or “warm” we feel assured.If it feels “hot”, without knowing what the actual operating temperatureof the bearing should be, we get worried and spend much time andeffort to lower the temperature.But the human hand is not a good thermometer and estimatingbearing temperature with the hand may cause a false alarm.Depending on the individual, temperature range which feels “hot” is50-55°C. The human hand fails to estimate temperatures above this.The upper limit of the operating temperature for ball bearings isconsidered to be the temperature at which the lubricant loses itslubricating qualities and begins to carburize. Temperatures up to70°C are extremely safe. Since at about 70°C a better flow of lubricantis expected, it is desirable for bearings to operate at this temperature.This gives a clear idea why a thermometer should be used tomeasure bearing temperatures.All bearings, which are not cooled with water, operate at sometemperature above that of the ambient. In bearings heat is generatedby the rolling friction of the balls and by the race drag. Some heatmay also be added to the bearings through the shaft by conduction.The amount of heat being dissipated into the surrounding atmospheredepends on the cooling area of the bearing housing and thetemperature and motion of surrounding air. When abalance betweenthe generated and dissipated heat is reached a stable operatingtemperature is established. This temperature remains constant unlessone or more of the variables changes. No matter how hot this stabletemperature feels to the human hand, it does not constitute a signof danger unless it exceeds the upper limit of the lubricant. Thetemperature should be measured accurately by thermometer andrecorded.A sudden and excessive rise in temperature is a danger signal andits cause should be investigated. After adding only one shot of greaseto the bearing check the temperature.

15) BEARING TEMPERATURE MEASURMENT

•

•

•

•

16

• Periodical check interval : This interval must be determined

by user according to operational conditions. In general pump

must be checked during bearing replacement.

• In case pump is dismantled from the pipe line for

maintenance, necessary precautions must be taken in control

panel for stating the pump accidently when it is dismantled.

• Electric motors and other electrical accessories must be

checked and serviced according to manufacturer’s

instructions.

• All instructions of this manual must be taken into consideration.

• Bearing housings manufactured with high accuracy they

must be serviced with care.

• In case of bearing housing wear they must be replaced with

new ones. In order to ensure this the must be checked

carefully.

• Components to be checked in periodical controls : Wear

rings, shaft sleeve, shaft, bearing housing, impeller, packing

must be checked. If wear ring diameter reduced by 1 mm it

must replaced with new one.

17) PERIODICAL CHECKS AND MAINTENANCE

If it has not dropped, no more grease should be added instead otherlikely causes, such as coupling misalignment and improrer packing,should be checked. Temperature rise may not be due to bearingfailure or some unnecessary loads stated above. It may be causedby an increase in the temperature of the pumped liquid or by a risein ambient temperature during the warm summer months. Heattransfer caused by the increased temperature of the pumped liquidcan be minimized by supplying the bearings with cooling water froman external source.

In many cases, bearing temperatures increase due to defectivelubrication.

For example, over-greasing results in more resistance to rotationand consequently more heat is generated. Getting rid of the excessivegrease will decrease the bearing temperature considerably. In mostpumps, pumping hot liquids, water cooled bearings are used. Operatingtemeperatures of these bearings may be lower than that of thesurrounding atmosphere.

Some times when pumps are first started bearing temperatures seemto be too high. This is mostly due to the grease seals rather than thebearings. If this is the case the bearing temperature is reduced toa normal level as the grease seals are seated.

Operation with vibration results increase in bearing temperature andreduces bearing life.

•

•

•

•

• In case of excessive bearing temperatureconsult to EBITT

ATTENTION

!

• When starting new pmp for the first time follwing must bechecked.

• Pump shaft must rotate freely.• Check electrical connections.• Check motor rotation direction.• Check pump foundation, base plate, anchor bolts and pipe

connections.• If pump shaft does not rotate freely do not start pump without

taking necessary actions.

• Packings, gland and flushing water pipes must be connectedproperly to allow sufficient flow.

• After all these checks, open suction valve totally and letsuction line to be filled with fluid completely.

• In case of floaded suction side installation fluid fills suctioneasyly.

Installations with suction head if the system has foot valve fillthe pump wth fluid up to the highest level. If there is vacuumpump operate vacuum pump to to make fluid to reach uppermost level.• Fluid in the pump acts as lubricant for wear rings and shaft

sealing.

16) INSTRUCTIONS TO BE FOLLOWED WHEN STARTING NEW PUMPS

• Do not operate pump if couplingalignment is not made.

ATTENTION

!

• Never operate pump in dry condition.

ATTENTION

!

• Start the pump and open the discharge valve as quickly as

possible. Check discharge side pressure. If the presure is

not reached at specified speed stop the motor discharge the

air in the pump and make necessary checks again.

• Pump which is started for the first time must be operated on

specified duty point for appropriate duration.

Do not operate pump in throttled valve this may result in heat

increase.

• Bearing housing diameter must not belarger than it is original value.

ATTENTION

!

• Servicing must be done in clean environment.

• When tightening bolts torkmeter must be used and ang

tightening must be done carefully.

• Before servicing accuracy of the measuring tools must be

checked safety instructions must be obeyed.

• If pump is to be send to EBITT forservicing pump type and serial numbermust be mentioned.

ATTENTION

!

17

• For trouble free operation always

use original spare parts.

ATTENTION

!• Keep original spare parts in your stock. For number of spare

to be kept in stock contact EBITT.

17-3) BOLT TIGHTENING MOMENTS

ScrewsTightning Moment

Classification8.8 10.9

M5

M6

M8

M10

M12

M14

M16

M18

M20

M22

M24

M27

M30

M33

M36

6

10

25

49

85

135

210

300

420

580

710

1050

1450

1970

2480

8.7

15

36

72

125

200

310

430

610

820

1050

1550

2100

2770

3560

Part NameNo of Pumps

2 - 4 8 and moreImpeller

Wearing (set)

Shaft Sleeve

Packing

Bearing

Oil Seal-O-ring

Mechanical Seal

1

2

3

%30

%50

%50

5 - 72

4

6As No. of Pumps

As No. of Pumps

As No. of Pumps

As No. of Pumps

17-4) EXPECTED NOISE LEVELS

Rated Power KW

Pump1450 (rpm) 3000 (rpm)

0.550.751.11.52.234

5.57.51115

18.522303745557590110132160200250

545456575960616263676970717475767778798081828385

565658596162636465707273757778798081828384---

(*) Measurement without insulation screen on reflecting surface,in open, from 1 m. distance. (ISO 3744)

Sound Pressure Level (dB) *Pump and Motor

1450 (rpm) 3000 (rpm)616163656668707172737475767879808182838586878889

63656669707274818283838484919293939494959596--

17-1) PAINTING

• Primary coat : Rapid Cellulosic primer RAL 3013 – red• Final coat : Cellulosic RAL 5010 - Blue

If requested by client other paintings can be employed.

17-2) SPARE PARTS

• EBITT warranties to supply necessary spare partsfor 10 years after date of delivery.

• When ordering spare parts mention duty point informationstated in pumps name plate. ;- Pump type, serial number, capacity flow rate, head, motorpower and speed.

• When ordering spare parts, part name, part No and quantitymust be stated.

• Spare parts list number of spares that should be kept in stockaccording to number of pumps.

18

17-5) ALLOWABLE FORCE AND MOMENT LOAD ON PUMP FLANGES

Type - N Suction Flange Discharge Flange Fv (N) FH (N)

Forces Moments

Mt (Nm)32-20032-25040-20040-25040-31550-20050-25050-31565-20065-25065-31565-40080-16080-20080-25080-31580-400100-200100-250100-315100-400125-200125-250125-315125-400150-200150-250150-315150-400150-500200-315200-400200-500250-400250-500300-400300-500

5050656565656580808080100100100100100100125125125125150150150150200200200200200250250250300300350350

3232404040505050656565658080808080100100100100125125125125150150150150150200200200250250300300

2400

2600

2700

3000

3500

4600

5700

6400

7400

9100

1600

1800

1900

2200

2800

3700

4800

5900

6850

7000

410

550

700

850

1200

2100

2900

3300

3800

6200

12000 9300 8600

Following inequality must be fulfilled;

Where Σ (Fv), Σ (FH) and Σ (Mt) are sum of mean value of forces and momentson pump flanges. Direction of the forces and their distribution are not takeninto consideration.

19

18) CHARACTERISTIC FAULTS

5) Pump operating undervibration and noise.

1.1.

FAULTS POSSIBLE CAUSES

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

1.10

1.11

1.12

1.13

1.14

1.15

1) Pump does not deliver anywater or delivers less.

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

2) Pump discharge head notsufficient.

3.1

3.2

3.3

3.4

3) Pump stops after operatingfor a while.

4.1

4.24.3

4.44.5

4.6

4.7

4.8

4.9

5.1

5.2

4.10

4) Motor absorbing more thanrequired power.

Plant friction losses are higher than estimated (TotalSystem Head higher than pump nominal head)

Suction head is high

Impeller, volute, discharge line blocked

Wrong direction of rotation

Air trapped in suction line

Air escaping into suction side throughconnections

Static head is greater than pump manometrichead

Discharge line blocked

Low speed

Air escaping through packing

Suction line not filled with water before startingpump

Blocked strainer and foot valve

Pumps not correctly selected in case of paralleloperation

Suction pipe diameter too small

Air entering through suction piping or foot valve

Low speed

Wrong direction of rotation

Increased medium viscosity

System head higher than calculated

Pump not correctly selected in case of paralleloperation

Worn or blocked impeller

Severe pump leakage

Discharge line blocked

Suction line not filled

Air trapped in suction line

Air escaping in to suction line

As pump starts to operate, suction level dropscausing suction of air and medium

Motor speed higher than normal

Wrong direction of rotationTotal system head higher or lower than pumpnominal head

High medium viscosity and specific gravityBlocked impeller

Bent pump shaft or friction between rotation andstationary parts

Worn wear ring

Packing, shaft too tight

Misallingned coupling

Air pockets trapped in pump and suction pipingsytem. Wrong suction piping sytem.

Suction head too high (medium turning intovapour at suction side)

Bearings have failed

Suction pipe not sufficiently submerged

20

CARACTERISTIC FAULTS

5.3

FAULTS POSSIBLE CAUSES

5.4

5.5

5.6

5.7

5.8

5.9

5.10

5.115.126.1

6.26.36.4

6.5

6.6

6.76.87.1

7.2

7.37.47.57.67.7

7.88.1

8.28.3

8.4

8.5

8.6

8.7

8.88.98.10

8.118.128.13

8.148.15

8.16

9.1

9.2

9.3

9.4

9.5

6) Bearing frequentlybunning.

7) Temperature rise in thepump casing.

8) Frequent bearingfailure and motor failure.

9) Motor switch opens thecircuit.

Foot valve and stainer undersized or blockedcamsing loss at suction

Suction pipe not well immersed in water

Pump operating lower or higher capacity thanits nominalBlocked impeller

Pump and motor misallion or beut pump shaft

Bearings worn, over heated or failed

Unbalanced or badly balanced impeller

Friction between rotating and stationary parts

Pump foundation not rigit enoughSuction and discharge collector connection not rigitBent or off centre pump shaft

Leakage in bearing housing assemblyUnbalanced or bad balanced impellerNo or not sufficient oil in pump

No or not sufficient balance holes in impeller

Bearings are not adequately sized wronglychosen bearings.

Bad coupling allinmentPump foundation not rigit enoughPump operating at no or low capacity than itsnormal (near/close valve operation) capacity

Pumps not correctly selected for paraleloperationFriction between rotating and stationary partsBearings are jaming or bent shaftAxial loads unbalancedPacking too tightPump foundation not rigit enough, pumpoperating under vibrationPump operating closed or near close valveSuction problem exists, suction head too high

Water level lowBad coupling allignment

Wrong system manometric head calculation

Pump operating close to end of curve and withlow efficiencyPump rotates in reverse when stoppedunscrewing impeller nut, check valve doesntclose at stopage causing reverse rotation.Wrongly assembled bearings

Bent pump shaftNot appropriate pump shaft diameterIncreased gap or worn wear rings

Wrong bearing selectionNo oil in bearing housing‹mpeller balance holes missing or impeller balancevanes too large or missingLarge solids trapped in impellerExcessive pump start frequency

Wrong/small motor selection

Wrong/small circuit break selection

Motor not selected according to pump

Motor Defective

Power fluctiation

Pump blocked

19) PUMP SECTIONAL DRAWING and PARTS LIST19-1) N VOLUTE TYPE PUMP

1-5-

11-20-30-50-60-70-

134-153-155-165-188-200-210-211-220-

57-58-61-69-

230-250-379-

VoluteWear ringBearing frame support footImpellerBearing frameStuffing boxShaftShaft protecting sleeveBearing coverGlandLantern ringImpeller nutThrowerBall bearingImpeller keyCoupling keyOil sealStuffing box (for double Mech. seal)Mechanical seal coverShaft sleeve (for double mech. seal)Shaft sleeve (for single mech. seal)CirclipMechanical sealWasher (for mechanical seal)

21

Grease lubrication

Stuffing box with mech. seal57 69 250 379 230 58

165 5 210 20 70 155 30 220 200 60 11

61

1 50 153 188 134 211

19-2) SCP - DOUBLE SUCTION PUMP

49 9 200 1 53 67 55 2 51 5 22210

61 68379

250 58 31201

48211

1-2-5-9-

22-31-48-49-51-53-55-61-67-

200-201-210-211-58-68-

250-379-

Casing half (lower)Casing half (upper)Wear ringBearing capImpellerBearing housing (Grease lubrication)Bearing cover (Coupling end)Bearing end coverStuffing box bushingGlandLantern ringShaftShaft sleeveBall bearingBall bearingImpeller keyCoupling keyMechanical seal coverShaft sleeve (for mechanical seal)Mechanical sealWasher (for mechanical seal)

22

20) SEAL AND COUPLING SAFETY PROTECTION

• In order to prevent pumps to cause harm on people or

equipment, safety guards must always be fitted while pumps

are running.

• These guards must be refitted after servicing.

• Never operate pump withoutfitting guards

ATTENTION

!

(fig.) 20.a N Series pumps

(fig.) 20.b SCP Series pumps

Seal safety protection

Coupling safety protection

Seal safety protection

Coupling safety protection

21) LUBRICANT LIST FOR N PUMPS

23

Lubricated Parts : Bearings

OIL SPECIFICATIONS

A) Lubrication type : Oil bath

Bearings temp. : >50°CManufacturer : SHELLOil type : Tellus T 68Density : 0.877 kg/dm3

Flash point : 230°CPour point : -36°CViscosity (20°C) : 173 mm2/snAlternative oils : Mobil DTE Light / HHFirst change : 300 hoursChange freq. : 3000 hoursMax. Charge life : 6 months

Bearings temp. : <50°CManufacturer : SHELLOil type : Tellus T 46Density : 0.872 kg/dm3

Flash point : 210°CPour point : -39°CViscosity (20°C) : 110 mm2/snAlternative oils : Mobil DTE Light / HHFirst change : 300 hoursChange freq. : 4000 hoursMax. Charge life : 12 months

B) Lubrication type : Grease

Viscosity (40°C) : 80 cstDegree of density : 3Operation heat : -20°C ˜ +140°COperation heat for long time : 75°CChange freq. : 1500 ˜ 2500 hoursOil type : ARCANOL MULTI3 L71VAlternative oils : SKF LGMT3, SHELL ALVANIA EP GREASER

ATTENTION: First change and change frequency are related to working conditions and real working hours.

Total oil quantity => QN Pump type Kg

0.1

0.2

Litre0.11

0.26

40/200, 40/250, 50/200, 50/250, 65/200, 80/160

50/315, 65/250, 65/315, 80/200, 80/250, 80/315,100/200, 100/250, 100/315, 125/200, 125/25080/400, 100/400, 125/315, 125/400, 150/250,150/315 0.3 0.36

150/400, 200,315150/500, 200/400, 250/315200/500, 250/400, 250/500, 250/450, 300/315,300/400

0.30.50.9

0.340.520,90

22) PUMP DIMENSION TABLES22-1) N

24

K

Da

Discharge

W

F

M1

A

ABeSuction

M2

D

S2

L

ABb

N1

N2

S1

H2

H1

Z B

Q E

BIT

T r

eser

ves

the

right

to m

ake

any

chan

ges

in d

imen

sion

s w

ithou

t giv

ing

prio

r no

tice.

FLANGES CONFORMING TO DIN 2501 and TS ISO 7005 - 2 (X) Spacer dimension for spacer coupling

Mec

h. S

eal

Dia

met

er

Weight~Kg

N 32/200

N 32/250

N 40/200

N 40/250

N 40/315

N 50/200

N 50/250

N 50/315

N 65/200

N 65/250

N 65/250

N 65/315

N 65/315

N 65/400

N 80/160

N 80/200

N 80/250

N 80/250

N 80/315

N 80/315

N 80/400

N 80/315x2

N 100/200

N 100/250

N 100/315

N 100/400

N 100/400x2

N 125/250

N 125/250

N 125/315

N 125/400

N 125/400x2

N 150/250

N 150/315

N 150/400N 150/400

N 150/500

N 200/315

N 200/400

N 200/500

N 250/315

N 250/400

N 250/450

N 250/500

N 300/315

N 300/400

N 300/500

22-2) SCP

25

A

EN

M

P

H

FA

ABe

D

GA

F G

ABb

C

B

I

A

N

GA

FA

D

M

E

H

ABe ABbC

B

F G

I

Dimensions (mm) subject to change without prior notice!]

PUMP TYPE ABb ABe A B C N E F G H I M D GA FA Weight (kg)

125150250250250250300300300350350400400400500500600700

200250300300300400350350350400400500500500600600700800

860985

1115110511051565124512201215131513151465146515451645175519502400

740850850

100010501205109310051130110012001210123014501450171017502200

700850850910940

12001020940

1060106011401180120014001410158017201940

375435480475475670545525525580580650650680730760860

1080

485550635630630895700695690735735815815865915995

10901320

370455450550550695585505580600650705680800800905875

1400

370395400450500510508500550500550505550650650805875800

400475480480480670610530600630670720720820870960975

1100

200230225225225390315250315315355355355450450545695620

110110140140140210140150150140140150150170170210210210

484864646495647070707070709090

105105105

51.551.5686868

10068

74.574.574.574.574.574.59595

111111111

141418181825182020202020202525282828

585585820950

10301600980

10701120137014901740215023802980358539507100

PUMP TYPE ABb ABe A B C N E F G H I P M D GA FA Weight (kg)

65658080100100125150200

100100100125150150200250300

565610565610730890110511951245

50558050558061068098010501250

49067554067566062595010601190

250270250270320390480520540

315340315340410500625675705

280300280300310360525600700

225280225280300320455450550

270340270340360335500580650

130165130165185210325350400

190240190240260285280245250

60606060100110140140150

283228324242606470

3135313545456468

74.5

8108101212181820

90140176185232285750870

1185

SCP 65/250

SCP 65/315

SCP 80/250

SCP 80/315

SCP 100/250

SCP 100/315

SCP 125/600

SCP 150/630

SCP 200/690

SCP 125/315

SCP 150/400

SCP 250/315

SCP 250/400

SCP 250/500

SCP 250/630

SCP 300/315

SCP 300/400

SCP 300/500

SCP 350/400

SCP 350/500

SCP 400/400

SCP 400/500

SCP 400/630

SCP 500/500

SCP 500/800

SCP 600/800

SCP 700/700