This manual is to be given to

the end user

PSP 21 - PSP 22 - PSP 23 Electropumps

Installation and maintenance

1660 en - 05.2000 / c

INSTALLATION AND MAINTENANCE

PSP 21 - PSP 22 - PSP 23Electropumps

GENERAL INFORMATION

LEROY-SOMER 1660 en - 05.2000 / c

1 - GENERAL INFORMATIONThe PSP 21, PSP 22 and PSP 23 electropumps must beinstalled in accordance with the instructions in thismanual. They must not be used for operating conditionsother than those given in this document.Failure to comply with the information in this manual, orany modification made to the equipment, withoutLEROY-SOMER's agreement, will invalidate the warranty.LEROY-SOMER accepts no responsibility in the event offailure to comply with the instructions given in thisdocument.This manual does not take account of safety rules andregulations in force for the location where the equipmentis installed, which the user is responsible for enforcingand complying with.

2 - USEPSP series electropumps are designed to pump water, oil andany clear, non-contaminated, non-abrasive, non-corrosiveand non-explosive liquid, compatible with the materials ofwhich the pump is constructed.For other liquids to be pumped: please consult Leroy-Somer.– Maximum temperature of pumped liquid: 110°C– Minimum temperature of pumped liquid: - 10°C– Maximum viscosity of pumped liquid: 20 centistokes or 3° Engler– Maximum ambient temperature: 40°C– Maximum duty pressure of the pump (delivery): 6 bar– Density of pumped liquid: 1.

3 - CHARACTERISTICSEach electropump is fitted with two identification plates. Onedefines the hydraulic unit, and the other, the motor.

3.1 - Hydraulic characteristicsThe hydraulic characteristics are guaranteed to complywith international standard ISO 9906 level 2, for seriesproduction pumps.

3.2 - Electrical characteristics

4 - HANDLINGThe electropumps must be handled and unpacked carefully.

5 - STORAGEStorage under correct conditions avoids the electropumpsdeteriorating in any way.They must be stored protected from adverse weatherconditions, dust, vibrations and impacts, in a dry, closedlocation.If there is a risk of frost at the storage location, make sure thepump is drained.Before starting or restarting an electropump unit, follow thedirections given in this manual.

6 - INSTALLATIONAn electropump must be installed by people qualified forthis type of work.Place the electropump as close as possible to the watersupply in an easily accessible place.The intake and outlet ports are arranged in accordance withthe diagram below.

TYPN∞H max m.

PSP 23 TA 950371

42MOTEURS LEROY-SOMER

Electropump serial no.

Maximum total manometrichead in metres

Electropump type

Frequency

Rated power

Rated current

V

Supply voltage

Power factor

Rotation speed

Motor typeMotor serial number

Hz min-1 kW cos ϕ A220/230

240380/400

415

50505050

2780278027802780

0,30,30,30,3

0,9

0,90,8

0,8

1,551,550,90,9

MADE IN FRANCE

IP 55 I.cl. Fc/h C

C%S1

VV

μfμf

Mot 3 ~ LS 71 N 343566DG 1995

40C

2

INSTALLATION AND MAINTENANCE

PSP 21 - PSP 22 - PSP 23Electropumps

ELECTRICAL CONNECTION

LEROY-SOMER 1660 en - 05.2000 / c

Intake port on the right, seen from the pump side end.As the hydraulic unit is symmetrical, the intake and outletports can be reversed when it is fitted with a 3-phase motor,and only in this case.Make sure then that the motor turns in the correct direction.The suction and discharge pipework must be mounted so asnot to create mechanical forces on the pump body.The pump has been designed for connections to the intakeand outlet ports with 3-part connectors with an externaldiameter not exceeding 35 mm.The tightening torque on the connection ports must notexceed 3 m daN.It is recommended to fix the electropump to its support.The electropump can be installed in various positions,except for motor underneath the pump (see sketch below).

The electropump must be installed in a ventilated room,protected from adverse weather.

6.1 - Suction pipeworkThis pipework must have a diameter sufficient so as not tocreate head losses that are too great. It must be completelyleakproof, capable of withstanding low pressure and nothaving any high point.A leakproof inlet filter valve must be mounted at its end. A slope of 2% upward towards the pump is recommended inorder to bleed the pipe properly.The inlet filter must not allow the passage of particles largerthan 2 mm. It must be situated at a depth below the level of thelowest water, not permitting siphoning of the external air, andbe well away from the walls and bottom of the well or tank.If the electropump is working under pressure, the inlet valveis replaced by a shut-off valve for isolating the pump.

6.2 - Discharge pipeworkThe diameter of this must be chosen after carefullycalculating the head losses of the installation.On this pipe, provide a flow adjustment valve with a non-return valve placed upstream of it.

6.3 - Prior to first start-upMake sure that the electropump turns freely without sticking.To do this, remove the fan cover and turn the fan a fewrevolutions by hand.Fill the suction pipework and the pump taking care to bleedthe air via the outlet port. Perform this operation by turning theelectropump rotor until the water comes out with no airbubbles.Check that the inlet filter valve is completely leakproof bymaking sure there is no drop in level via the outlet port.

7 - ELECTRICAL CONNECTIONThe electrical connection must be done by a qualifiedelectrician, complying with the current regulations.If the electropump has been left in a damp atmosphere, checkthe insulation resistance of the motor before making anyelectrical connections. This must not be less than10 Megohms when cold at 500 volts for 60 seconds.

7.1 - Power supplyMake sure that the supply voltage shown on the motornameplate corresponds to that of the mains supply.Check that the cross-section of the incoming and outgoingconductors of the meter is sufficient to provide a correctpower supply for the electropump.

7.2 - ConnectionsStandard construction motors are supplied connected asfollows:

3-phaseΔ 230 / Y 400 V at 50 Hz

Make quite sure that the connections match the mainsvoltage.They must be done in accordance with the diagram belowwhich is contained in the cover of the terminal box.

Single-phase230 V single-phase at 50 Hz

SUCTION MODE

UNDER PRESSURE

1 - INLET FILTER

VALVE

2 - SHUT-OFF

VALVE

3 - NON-RETURN

W2

U1

L1 L2 L3

U2

V1

V2

W1U1

L1 L2 L3

V1 W1

W2 U2 V2

Δ connections Y connections

3

INSTALLATION AND MAINTENANCE

PSP 21 - PSP 22 - PSP 23Electropumps

STARTING THE ELECTROPUMP

LEROY-SOMER 1660 en - 05.2000 / c

7.3 - ProtectionMake the earth connection in accordance with the currentregulations.To maintain the validity of the warranty, it is essential toprotect the motor electrically using a thermal magnetic circuitbreaker placed between the isolating switch and the motor.This circuit breaker may be combined with fuses.Before starting the electropump, the circuit breaker must betemporarily set at the current indicated on the identificationplate for the corresponding mains supply voltage.The permanent setting shall be made in accordance with theinformation in section 8.So as not to subject the electropump to temperature rises thatare too great, a maximum of 40 starts per hour must not beexceeded.This number of starts must be spread over the entire hour.

8 - STARTING THE ELECTROPUMPAn electropump must never operate dry. The quality of thefriction surfaces and correct sealing of the mechanical sealdepend on this.– Open the intake valve (pump under pressure situation).– Fill the pump and suction pipework with liquid to bepumped.– Close the discharge flow adjustment valve.– For electropumps with a 3-phase motor, make sure that thedirection of rotation is the same as that shown by the arrowon the fan cover. To do this, run the motor for a fewrevolutions. If the direction of rotation is reversed, change theconnection at the motor terminal block by reversing twopower supply wires.– After starting, when the motor has reached its steadyspeed, make sure that the discharge pressure is normal andnot subject to significant fluctuations. If this is not the case,stop the unit and fill the pump again. If the fault persists, lookfor air inputs in the suction pipework.– If the motor speed is insufficient, check the connections.– Gradually open the discharge valve to the required flow/pressure point.Take care not to leave the discharge valve closed for morethan 2 minutes.– With the electropump operating normally, read the maximumcurrents drawn from each phase. Permanently set the circuitbreaker for a current slightly greater than the maximum read.This must never exceed the current shown on themotor nameplate.– Check that the voltage at the motor terminals is correct.– Any difference is an indication of abnormal operatingconditions of the unit (voltage drop, open-circuit phase,incorrect adjustment, foreign body in the pump, sludge, etc.).– The electropump must turn steadily, without vibrating.– Never operate with a valve closed (intake or discharge).

9 - STOPPING THE UNIT– Turn off the motor's electrical power supply.– If the unit is to be stopped for a lengthy time and/or there isa risk of frost, drain the suction and discharge pipes and thepump or protect it against frost by suitable means.

10 - SERVICINGThere is practically none.The bearings are sealed and greased for life and require noservicing. The mechanical seal must be changed if there ispronounced wear or a leak. Electropumps installed as backupmust be run once a week for a short time, in order to makesure they are working correctly.Dismantling of the electropump after 2 years or 10,000 hours'operation is recommended so that parts subject to wear(mechanical seal, turbine, etc.) can be examined andreplaced if necessary. After a lengthy period of stoppage,check that the pump is not seized (turn it using the fan sideshaft extension).

11 - DISMANTLING - REASSEMBLYDismantling and reassembly of an electropump must becarried out by personnel qualified for this type of work.Where one or more components of the electropump arereplaced (spare parts), it is essential to refit parts supplied byLEROY-SOMER, otherwise the warranty will be invalidatedand the manufacturer will decline responsibility. Any workcarried out on an electropump makes the person carrying outthe work responsible.Before any work is carried out on the electropump:– Disconnect the motor's electrical power supply– Close the intake and discharge valves– Make sure that the pump body is not under pressure– Drain the pump

11.1 - DismantlingAfter dismantling the suction and discharge pipework,proceed as indicated below. Remove:– The 4 screws and their washers .– The cover with its 'O' ring .– The turbine .

11.2 - Changing the mechanical sealAfter dismantling the hydraulic unit as indicated above,remove:– The Woodruff key .– The circlip and the plain washer .– The slip-ring .– The spacer ring .

Under no circumstances is dry operation permitted.

83 2.8319 81

26

5485 67

7172

4

INSTALLATION AND MAINTENANCE

PSP 21 - PSP 22 - PSP 23Electropumps

SPARE PARTS

LEROY-SOMER 1660 en - 05.2000 / c

Refitting a new seal:– The spacer ring housing must be clean.– Fit a new spacer ring, lubricating the rubber ring and itshousing with a 10% solution of Teepol in clean water.– Insert the spacer ring into its housing in the body byexerting pressure with a plastic tubular mandrel, as shown inthe diagram below.

Be careful not to scratch the friction face and make sure thatthe spacer ring is resting perfectly in the back of the body.– Make sure that the friction face is dry and clean, togetherwith the part of the shaft accommodating sliding of the slipring .– Re-fit a slip ring , after first lubricating it with the samesolution as the spacer ring, using a suitable tool inaccordance with the diagram below.

– During these various operations, make sure not to damagethe friction faces of the mechanical seal.

11.3 - Reassembling the hydraulic unit– Before reassembly, it is necessary to check the cleanlinessand wear of the parts.– Reassemble in the reverse order to dismantling.Note: After the unit has been dismantled, fitting of a newmechanical seal is recommended.

12 - SPARE PARTSWhen ordering spare parts, give the following information:– The electropump type.– The serial number of the electropump.– The description of the spare part with its reference,appearing in the drawing and parts list mentioned in thisdocument.

72 21

Pushing tubeHousing

Spacer ringMating surface

7171

Pushing tube

Shaft

Gasket

5

INSTALLATION AND MAINTENANCE

PSP 21 - PSP 22 - PSP 23Electropumps

SPARE PARTS

LEROY-SOMER 1660 en - 05.2000 / c

Fault Causes Remedies

Motor does not start – Faulty or incorrectly rated circuitbreaker.

– Check.

– The mains supply voltage is correct butthe voltage at the motor terminals is toolow.

– Renew the unit's power supply line,increasing the wire cross-section by asufficient amount.

– The motor is connected incorrectly. – Comply with the connection diagram(motor connections).

The pump does not start – Insufficient filling of the pump body andsuction pipework.

– Refill.

– The inlet filter is not sufficientlyimmersed.

– Check its immersion depth.

– Direction of rotation reversed (3-phasemotor).

– Reverse 2 conductors at the motorterminal block.

– Manometric suction head too great. – Reduce the head (reduce the headlosses).

– The suction pipework is not leakproof orhas a reverse slope that forms an airpocket.

– Check the suction pipework.

– The valve is stuck. – Check the valve.

Inadequate characteristics – Direction of rotation reversed (3-phasemotor).

– Reverse 2 conductors at the motorterminal block.

– The total manometric head is greaterthan that provided for.

– Provide an electropump with highercharacteristics or reduce the head losses.

– Manometric suction head too great. – Reduce the static suction head.– Reduce the head losses in the suctionpipework.

– The pump, suction pipework or inletfilter are partially obstructed.

– Clean them and remedy the cause.

– Suction reverse slope forming an airpocket.

– Give the suction pipework an upwardslope of 2 cm per metre minimum.

– Entry of air during suction. – Check that the suction pipework isleakproof.

– Check the immersion depth of the inletfilter valve.

The circuit breaker trips – Permanent excess pressure due to toohigh a viscosity or density of the pumpedliquid.

– Please consult Leroy-Somer.

– Voltage drop too great. – Increase the voltage or the conductorcross-section.

– 2-phase operation (3-phase motor). – Inspect the power supply cables andconnection terminals.

Leak at the mechanical seal – Faulty mechanical seal. – Check and replace all the mechanicalseal elements (never operate dry).

Vibration of the unit – Conformity of the various points givenabove.

– Check them.

– Abnormal stresses on the flanges. – Check the fixing of the pump to itssupport and the connection of thepipework to the intake and outlet ports,then eliminate the stresses (positioning ofthe pipework or fitting of flexible collars).

– Faulty motor bearings. – Check and change the bearings (samedimensions and type).

6

INSTALLATION AND MAINTENANCE

PSP 21 - PSP 22 - PSP 23Electropumps

SPARE PARTS

LEROY-SOMER 1660 en - 05.2000 / c

Reference Number Description Material19 1 Pump cover Ultem

21 1 Pump body Ultem

26 1 Turbine PES

54 1 Key Stainless steel

60 1 Deflector Nitrile

67 1 Coupling thrust washer Stainless steel

71 1 Slip ring Graphite + Nitrile

72 1 Spacer ring Ceramic + Nitrile

81 1 'O' ring Nitrile

83 4 Assembly screw Steel

2-83 4 Washers Steel

85 1 Circlip Beryllium copper

101 1 Motor (Z30C13 shaft)

7

LEROY-SOMER 16015 ANGOULÊME CEDEX - FRANCERCS ANGOULÊME N° B 671 820 223

Limited company with capital of €62,779,000

www.leroy-somer.com