Lowara FHE SERIES User manual

cod. 001073142 rev.G ed.02/2012

Lowara

cod. 001073142 F 02/10

ELETTROPOMPE CENTRIFUGHE

MONOBLOCCO SERIE FHE, FHS, SHE, SHS, SHO Istruzioni d’installazione e d’uso

FHE, FHS, SHE, SHS, SHO SERIES

CLOSE - COUPLED CENTRIFUGAL PUMPS Instructions for installation and use

ELECTROPOMPES CENTRIFUGES

MONOBLOC SERIE FHE, FHS, SHE, SHS, SHO

Instructions pour l’installation

et l’emploi

KREISELPUMPEN IN BLOCKAUSFÜHRUNG

BAUREIHEN FHE, FHS, SHE, SHS, SHO

Installations- und

Bedienungsanleitungen

ELECTROBOMBAS CENTRÍFUGAS

MONOBLOQUE SERIE FHE, FHS, SHE, SHS, SHO Instrucciones de instalación y uso

ELECTROBOMBAS CENTRÍFUGAS

MONOBLOCO SÉRIE FHE, FHS, SHE, SHS, SHO Instruções instalação euso

MONOBLOK CENTRIFUGALE ELEKTROPOMPEN

SERIE FHE, FHS, SHE, SHS, SHO

Aanwijzingen voor de

installatie en het gebruik

HELSTØBTE CENTRIFUGALELEKTROPUMPER

SERIE FHE, FHS, SHE, SHS, SHO Installations- og brugsanvisninger

CENTRIFUGALELPUMPAR MONOBLOCKUTFÖ-

RANDE SERIE FHE, FHS, SHE, SHS, SHO Installations- och bruksanvisning

KIINTEÄRAKENTEISET KESKIPAKOPUMPUT

SARJA FHE, FHS, SHE, SHS, SHO Asennus- ja käyttöohjeet

SENTRIFUGALELEKTROPUMPER

MONOBLOKK SERIE FHE, FHS, SHE, SHS, SHO Installasjons- og bruksanvisning

ΦΥΓ�ΚΕΝΤΡΕΣ ΗΛΕΚΤΡΙΚΕΣ ΑΝΤΛΙΕΣ

Μ�Ν�ΜΠΛ�Κ ΣΕΙΡΑΣ FHE, FHS, SHE, SHS, SHO

Οδηγεσ εγκατστασησ

και χρσησ

FHE, FHS, SHE, SHS, SHO SER‹S‹ MONO-

BLOK SANTR‹FÜJ ELEKTR‹KL‹ POMPALAR Montaj ve kullanma talimatlar›

ЦЕНТРОБЕЖНЫЕ ЭЛЕКТРОНАСОСЫ

МОНОБЛОК СЕРИИ

FHE, FHS, SHE, SHS, SHO

Инструкции по установке

и по использованию

WIROWE POMPY ELEKTRYCZNE MONO-

BLOK SERIA FHE, FHS, SHE, SHS, SHO

FHE, FHS, SHE, SHS, SHO

Instrukcje instalowania i obsługi

INSTRUCTIONS FOR INSTALLATION AND USE

1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page19

2 Preliminary inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

4 Working limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

8 Fault finding chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

9 Tables and drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

INSTRUCTIONS POUR L’INSTALLATION ET L’EMPLOI

1 Généralités . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .page24

2 Contrôle préliminaire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

3 Utilisations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

4 Limites d’utilisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

6 Fonctionnement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7 Entretien . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

8 Recherche des pannes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

9 Tableaux et dessins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

ISTRUZIONI PER L’INSTALLAZIONE E L’USO

1 Generalità . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .pag.14

2 Ispezione preliminare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

3 Impieghi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

4 Limiti d’impiego . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

5 Installazione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

6 Messa in funzione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

7 Manutenzione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

8 Ricerca guasti . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

9 Tabelle e disegni . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

Questa simbologia assieme alle relative diciture: “Pericolo” e “Avvertenza” indicano la potenzia-

lità del rischio derivante dal mancato rispetto della prescrizione alla quale sono stati abbinati, come sotto specificato:

SCOSSE ELETTRICHE

Avverte che la mancata osservanza della prescrizione comporta un rischio di scosse

elettriche.

PERICOLO

Avverte che la mancata osservanza della prescrizione comporta un rischio di danno

alle persone e/o alle cose.

AVVERTENZA

Avverte che la mancata osservanza della prescrizione comporta un rischio di danno

alla pompa o all’impianto.

AVVERTIMENTI PER LA SICUREZZA DELLE PERSONE E DELLE COSE

SAFETY PRECAUTIONS

Le symbole associ è à l’un des mots: “Danger” et “Avertissement” indique la possibilité de danger

dérivant du non respect de la prescription correspondante, suivant les spécifications suivantes:

DÉCHARGES ÉLECTRIQUES

Avertit que la non observation de la prescription comporte un risque de choc électrique.

DANGER

Avertit que la non observation de la prescription comporte un risque de lésion ou

dommage aux personnes et/ou aux choses.

AVERTISSEMENT

Avertir que la non observation de la prescription comporte un risque de dommage à la

pompe et/ou à l’installation.

AVVERTISSEMENTS POUR LA SECURITE DES PER

SONNES ET DES CHOSES

This symbol together with one of the following words “Danger” or “Warning” indicates the risk

level deriving from failure to observe the prescribed safety precautions:

ELECTRIC SHOCK

Warns that failure to observe the precautions may cause electric shock.

DANGER

Warns that failure to observe the precaution may cause personal injury or damage to

property.

WARNING

Warns that failure to observe the precautions may cause damage to the pump and/or

system.

ATTENZIONE

WARNING

ATTENTION

1. General

The purpose of this manual is to provide the necessary information for the installation, use and mainte-

nance of the pumps.

The user should read this manual before using the pump.

Improper use could damage the pump and cause the forfeiture of the warranty coverage.

When asking our sales and after-sales services for technical information or spare parts, please indicate

the model identification and construction numbers found on the nameplate.

The following instructions and warnings refer to the standard model; for any variations or characteristics

of the special versions please refer to the sales contract.

For any instructions or situations not referred to in this manual or in the sales documentation, please con-

tact our sales service.

2. Preliminary inspection

Upon delivery check the integrity of the packaging.

After unpacking the pump make sure that no damage has occurred during shipping.

Should the pump be damaged, please inform our agent within 8 days from the delivery date.

3. Applications

The FH series electric pumps are suitable for the pumping of liquids free of aggressive mechanical or

chemical agents in many civil, agricultural and industrial applications. The SH series electric pump can

also handle moderately aggressive liquids.

The SHO and SHOD series of pumps are suitable for pumping liquids containing solid substances mea-

suring up to 60% of the diameter of the discharge port.

4. Working limits

The pump is not suitable for dangerous or flammable liquids.

Maximum working pressure: FH = 12 bar.

SH = 12 bar.

Maximum temperature of pumped liquid: FH = 85°C standard version;

120°C with FPM or Ethylene -

propylene elastomers.

SH = 120°C.

Maximum number of starts per hour: 20 for power up to 5,5 kW

15 for power up to 15 kW

12 for higher power.

Delivery and head must always be within the rated values; any continuous running beyond these values is

anomalous and can damage the pump.

The nominal rotation speed is the one indicated on the pump’s plate. (1)

Do not refer to the motor plate. Since the motor is suitable for connection with different voltages at 50 and 60

Hz, its plate indicates the number of revolutions for both frequencies.

(1)

This pump, like any other centrifugal pump, can run at a different speed than the rated one if the impeller is replaced. Please contact our sales depart-

ment before carrying out such operations.

5. Installation

5.1 Handling

The product must be handled with care using suitable hoisting equipment; impacts can cause damage

without any visible external signs. Hoist unpacked products securely using a sling.

Do not use the eyebolts on the motor, if fitted, to move the whole pump; only use them to move

just the motor, if it needs replacing, after disconnecting it from the pump.

WARNING

English

5.2 Operating position

The pump is usually installed in a horizontal position. It can also be installed vertically or obliquely. Howe-

ver, for safety reasons, avoid installation with the motor underneath.

5.3 Positioning

Install the pump allowing adequate clearance on the motor side (K value in the dimensional table in the

catalogue) for motor disassembly and inspection of the liquid end, without the need to disconnect the

pump body and the pipes.

5.4 Anchoring

The pump should be securely fastened to the base by bolts through the motor or pump feet.

5.5 Suction and delivery pipes (See fig. 1)

Install a non-return valve in the delivery pipe to protect the pump from excessive back pressures and re-

verse rotation. In any applications where the pump’s delivery may be totally restricted we recommend fit-

ting a relief valve in the delivery pipe, or a recirculation bypass between the delivery side and the supply

tank.

FIGURE 1

Correct installation

A = Eccentric reductions

B = Positive gradient

C = Good immersion

D = Large bends

E = Suction pipe diameter ≥ pump

port diameter

F = Suction lift depends on the pump

and installation (*). In normal conditions

this should not exceed 5-6 m.

G = The pipes should not weigh on the

pump, but on separated supports. FIGURE 2

(*) Suction lift is determined based on liquid Incorrecte installation

temperature, flow resistance and NPSH 1 = Sharp bend: high flow resistance

required by the pump. 2 = Insufficient immersion: sucking air

3 = Negative gradient: air pockets

4 = Pipe diameter < pump port diameter:

high flow resistance.

6. Start-up

6.1 Electrical connections

Make sure that the rated voltage corresponds to the supply voltage.

Ground the pump before making any other connection.

We recommend that a high sensitivity differential switch (30 mA) be installed as extra

protection against lethal electric shocks in the event of faulty grounding.

WARNING

Connect the pump to the mains using a multiple-pole switch or other device ensuring multiple-pole discon-

nection (interruption of all the supply wires) from the mains, with a contact separation of at least 3 mm.

Remove the terminal board cover by first removing the screws.

Carry out the connections as indicated on the back of the terminal board cover, and as shown in

fig. 3 - 4.

The single-phase version has a built-in overload protection (2.2 kW excluded); the three-phase version

must be equipped by the user with a magneto-thermal switch or magnetic starter with overload and un-

dervoltage protection, a thermal relay and fuses installed upstream.

The overload relay must be set to the motor current rating. The thermal relay may be set to a current

value slightly lower than the full load value when the electric pump is definitely underloaded, but the

thermal overload protection must not be set to current values higher than the full load values.

Checking the rotation direction of electric pumps with three-phase motors.

The direction of rotation may be checked before the pump is filled with the liquid to be pumped, provided

it is run for very short starts only.

The pump must not be run until it is filled with liquid.

Continuous dry running will damage the mechanical seal beyond repair.

If the direction of rotation is not anti-clockwise when facing the pump from the suction side interchange

two supply leads.

6.2 Priming

To prime the pump, fill it and the suction pipe with the liquid to be pumped. To fill the pump, remove the

fill plug and proceed as follows:

– Pump with positive suction head:

open the suction gate valve and let the liquid in until it comes out of the fill plug.

– Pump with negative suction head, fitted with foot valve:

fill the pump and the suction pipe through the fill plug. To speed up the operation the pump may be fil-

led through the delivery port. Make sure to allow all air to escape. The pump is full only when there is a

stable liquid level at the fill plug and all air bubbles have escaped. For twin-impeller pumps, keep the

air valve on the pump body open throughout the filling operation, until the water overflows.

When the pump is full start it with the delivery gate valve closed, then open it gradually. Make sure that

the pressure and flow rate are constant; if not, stop the pump and repeat the entire operation.

For pumps with two seals mounted on both ends of motor (SHOD).

The seals are flushed by the circulation of the external liquid (compatible with the

pumped liquid).

The pressure of this liquid must be at least 0.5 bar higher than the pressure inside

the pump body.

6.3 Running

If all the installation and filling operations have been carried out correctly, the pump will run smoothly and quietly.

The maximum noise of the electric pump when properly installed and operating within its limits is as per

the table below:

*Average sound pressure level at 1-meter distance from the pump in an open field.

Always drain the pump whenever it remains inactive at freezing temperatures.

WARNING

MOTOR POWER MOTOR POWER SOUND PRESSURE

2 POLES 50 Hz 4 POLES 50 Hz

LEVEL

* Lp(A) dB ± 2

≤7,5 kW Up to 30 kW < 70

9,2 - 11 kW 73

15 - 22 kW 75

30 - 37 kW 80

45 - 55 kW 84

During operation, the outer surface of the pump (if hot liquids are being pumped) and

the outer surface of the motor can exceed 40°C. Do not touch with parts of your body

(e.g.: hands) and do not put combustible material into contact with the pump.

7. Maintenance

Maintenance operations must be performed by skilled and qualified personnel only. Use suitable

equipment and protection devices. Observe the accident prevention regulations in force. If you

need to drain the pump, make sure that the drained liquid does not cause damage or injuries.

The pump does not need any ordinary scheduled maintenance.

It may require maintenance in special cases, generally consisting of cleaning the impeller and replacing

the mechanical seal.

Before performing any pump maintenance make sure the motor is disconnected from the mains.

The reference number of each individual component can be found in the exploded views at pages 104÷118.

The motor, bracket, impeller and all the parts mounted on the shaft can be disassembled without discon-

necting the pump body from the system.

Remove the drain plug and drain the pump body, then proceed as follows:

7.1 FHE - 2FHE disassembly

- FHE: Remove the screws that secure the adapter (4) to the pump body (1); remove the motor (9)/adap-

ter/mechanical seal housing (3) and impeller assembly (2) from the pump body; remove the O-ring (6)

and the stationary part of the mechanical seal (7).

At this point both the motor and the liquid end are accessible for maintenance and cleaning.

- 2FHE: Loosen the fastening screws that secure the suction flange (4) to the pump body (1), recover

the O-ring (8) from the pump body, slide out impeller A (2), remove the diffuser (3), slide out impeller B

(2A) and the rotating assembly of the mechanical seal (7), then recover the fixed assembly of the me-

chanical seal (7) from the pump body. At this point both the motor and the liquid end are accessible for

maintenance and cleaning operations.

7.2 FHS disassembly

Proceed as indicated in paragraph 7.1 but remove the motor/pump support as well.

Please note that the impeller is keyed to the stub shaft fixed directly on the motor shaft extension.

7.3 SHE-SHS-SHOE-SHOS-SHOD disassembly

Version with support:

Support the motor using the special hooks and ropes or shims. Loosen all the screws that fasten the

pump body (1) to the adapter (4), and move the motor back until the shaft extension and the impeller (2)

are extracted from the pump body. At this point both the motor and the liquid end are accessible for

maintenance and cleaning.

Version with supports on the motor housing

Loosen the screws that fasten the pump casing (1) to the adapter (4) and the screws that fasten the

motor feet to the base. Then proceed as described for the version with bracket: move the motor back

until the shaft extension and the impeller are extracted from the pump body. At this point both the motor

and the liquid end are accessible for maintenance and cleaning. See the component list for the names

and ordering codes of spare parts.

7.4 Assembly procedure

For re-assembly, follow the disassembly procedures in the reverse order. Change the gaskets and any

damaged or worn parts.

8. Fault finding chart

PROBLEM PROBABLE CAUSE POSSIBLE REMEDIES

A) No electrical power

B) Blown fuses:

B1 Because inadeguate (blowing cur-

rent too low)

B2 Because the motor or the supply

cable are damaged

C) Overload protection previously

tripped

A) The rotating part is partially or complete-

ly obstructed (generally the impeller is

obstructed by foreign objects)

The pump is not primed: inadequate filling

or defective suction pipe or foot valve seal

(Warning! The mechanical seal could

have suffered serious damage)

C) Excessive suction lift and/or flow re-

sistance in the suction pipe

D) Wrong direction of rotation

A) The pump is cavitating

B) Motor bearings worn out

C) Foreign objects between the fixed

and rotating parts

A) See 3C

B) Momentary loss of a phase

C) Incorrect setting

D) The pump’s delivery is higher than the

rated one

E) Dense and viscous liquid

A) Supply electrical power

B1 Replace fuses with adequate ones

B2 Repair the motor or replace the cable

C)Reset the protection (if it trips again

see problem 4)

A)Dismantle the pump and clean it

B) Fill the pump with liquid after having

checked the seal of the suction pipe

and foot valve. Also check the in-

tegrity of the mechanical seal

C) - Reduce the suction lift.

- Use a larger diameter pipe.

- Flush the foot valve.

- Replace the foot valve with a big-

ger one

D) Switch two leads in the terminal

board or starter

A) - Choke the delivery

- See 2C

B) Replace the bearings

C) See 2A

C) Set to rated current

D) Close the delivery valve until the ca-

pacity returns to the rated value

E) Determine the actual power require-

ments and replace the motor ac-

cordingly

1. The pump

doesn’t start

2. Insufficient or

no delivery

3. The pump vibra-

tes and is too

noisy

4. Overload protec-

tion trips:

– accidentaly

– systematically

102

FIG. - ABB. - KUWA - - EIK. - ﬁEK‹L - PИC. - RYS. - 4

FIG. - ABB. - KUWA - - EIK. - ﬁEK‹L - PИC. - RYS. - 3

1 ~

3 ~

103

*Parti di ricambio consigliate – Recommended spare parts – Pièces de rechange conseillées– Empfohlene Ersatzteile – Piezas de re-

puesto aconsejadas – Peças de reposição aconselhadas – Geadviseerde reserveonderdelen – Anbefalede reservedele – Rekom-

menderade reservdelar – Suositellut varaosat – Anbefalte reservedeler – – Προτεινμενα ανταλλακτικ - Tav-

siye edilen yedek parçalar - Рекомендуемые запчасти - Zalecane części zamienne

9. Tabelle e disegni - Tables and drawings - Tableaux et dessins - Tabellen und

Zeichnungen - Tablas y dibujos - Tabelas e desenhos - Tabellen en tekenin-

gen - Tabeller og tegninger - Tabeller och ritningar - Taulukot ja kaaviot - Ta-

beller og skjemaer - - Πνακες και σχδια - Tablolar ve çizimler -

Талицы и чертежи - Tabele i rysunki

I numeri identificano i ricambi come da nostro catalogo specifico.

The numbers of the spare parts correspond to the ones in our specific catalog.

Les numéros de référence susdits correspondent aux numéros de notre catalogue pièces de rechange.

Die Ersatzteil-Nummern entsprechen unseren Katalognummern.

Los números de los repuestos corresponden a los que se indican en nuestro catálogo específico.

Os números identificam as peças de reposição conforme o nosso catálogo específico.

De nummers horen bij de reserveonderdelen die in onze speciale catalogus staan.

Numrene på reservedelene svarer til numrene i reservedelskataloget.

Numren på reservdelarna överensstämmer med de i vår specifika reservdelskatalog.

Varaosien numerot vastaavat varaosaluettelomme numeroita.

Numrene på reservedelene er i overensstemmelse med de i vår spesifikke reservedelskatalog.

Οι αριθμο ταυτοποιον τα ανταλλακτικ σμφωνα με τον συγκεκριμνο κατλογ μας.

Numaralar yedek parçalar› özel katalo¤umuzda gösterildi¤i gibi belirler.

Номера идентифицируют запчасти, в соответствии с нашим специальным каталогом.

Numery określają części zamienne w odniesieniu do naszego katalogu.

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