Wilo Multivert MVI 16, Multivert MVI 32, Multivert MVI 52, Multivert MVI 70, Multivert MVI 95 Installation And Operating Instructions Manual

Wilo-Multivert MVI 16.../ MVI 32.../ MVI 52.../ MVI 70.../ MVI 95...

D Einbau- und Betriebsanleitung

GB Installation and operating instructions

F Notice de montage et de mise en service

I Istruzioni di montaggio, uso e manutenzione

2 040 502 - Ed3/0805 pdf

MVI 16.../MVI 32... /MVI 52...

Fig. 1

Fig. 1

MVI 70...

/MVI 95...

Fig. 3

Fig. 2

Fig. 4

D

GB

EC declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

1. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2. Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3. Transport and interim storage . . . . . . . . . . . . . . . . . . . . . . . . . 10

4. Product and accessory description . . . . . . . . . . . . . . . . . . . . . 10

5. Assembly / Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6. Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

8. Problems, Causes and Solutions . . . . . . . . . . . . . . . . . . . . . . 13

F

Déclaration de conformité CE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

1. Généralités . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2. Sécurité . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3. Transport et stockage avant utilisation . . . . . . . . . . . . . . . . . . 15

4. Description du produit et de ses accessoires . . . . . . . . . . . . . 15

5. Installation / Montage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6. Mise en service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7. Entretien . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8. Pannes, causes et remèdes . . . . . . . . . . . . . . . . . . . . . . . . . . 18

I

Dichiarazione di conformità CE . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

1. Introduzione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2. Sicurezza . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

3. Trasporto e magazzinaggio . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4. Descrizione del prodotto e degli accessori . . . . . . . . . . . . . . . 20

5. Istruzioni di montaggio e installazione . . . . . . . . . . . . . . . . . . . 21

6. Messa in esercizio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7. Manutenzione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8. Risoluzione di problemi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

CE-Konformitätserklärung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

1. Allgemeines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2. Sicherheit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3. Transport und Zwischenlagerung . . . . . . . . . . . . . . . . . . . . . . 5

4. Beschreibung von Erzeugnis und Zubehör . . . . . . . . . . . . . . . 5

5. Aufstellung / Einbau . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6. Inbetriebnahme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

7. Wartung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

8. Störungen, Ursachen und Beseitigung . . . . . . . . . . . . . . . . . . 8

1

D EG - Konformitätserklärung

GB EC – Declaration of conformity

F Déclaration de conformité CEE

Hiermit erklären wir, dass die Bauarten der Baureihe :

Herewith, we declare that this product:
Par le présent, nous déclarons que cet agrégat :

MVI 16
MVI 32
MVI 52
MVI 70
MVI 95

in der gelieferten Ausführung folgenden einschlägigen Bestimmungen entspricht:

in its delivered state comply with the following relevant provisions:
est conforme aux dispositions suivants dont il relève:

EG-Maschinenrichtlinie 98/37/EG
EC-Machinery directive
Directives CEE relatives aux machines

Elektromagnetische Verträglichkeit - Richtlinie 89/336/EWG
Elektromagnetic compatability - directive
Compatibilité électromagnétique- directive

i.d.F/ as amended/ avec les amendements suivants:

91/263/EWG
92/31/EWG
93/68/EWG

Niederspannungsrichtlinie 73/23/EWG
Low voltage directive
Direction basse-tension

i.d.F/ as amended/ avec les amendements suivants :

93/68/EWG

Angewendete harmonisierte Normen, insbesondere:

Applied harmonized standards, in particular: EN 60034-1 Normes harmonisées, notamment:

EN 809

Dortmund, 11.04.2005

Quality Manager

Document: 2060375.1

Erwin Prieß

WILO AG
Nortkirchenstraße 100

44263 Dortmund

NL

EG-verklaring van overeenstemming

Hiermede verklaren wij dat dit aggregaat in de
geleverde uitvoering voldoet aan de volgende
bepalingen:

EG-richtlijnen betreffende machines 98/37/EG

Elektromagnetische compatibiliteit
89/336/EEG als vervolg op 91/263/EEG,
92/31/EEG, 93/68/EEG

EG-laagspanningsrichtlijn 73/23/EEG als
vervolg op 93/68/EEG

Gebruikte geharmoniseerde normen, in het
bijzonder:

P

Declaração de Conformidade CE

Pela presente, declaramos que esta unidade
no seu estado original, está conforme os
seguintes requisitos:

Directivas CEE relativas a máquinas 98/37/CE

Compatibilidade electromagnética 89/336/CEE
com os aditamentos seguintes 91/263/CEE,
92/31/CEE, 93/68/CEE

Directiva de baixa voltagem 73/23/CEE com
os aditamentos seguintes 93/68/CEE

Normas harmonizadas aplicadas, especialmente:

FI

CE-standardinmukaisuusseloste

Ilmoitamme täten, että tämä laite vastaa
seuraavia asiaankuuluvia määräyksiä:

EU–konedirektiivit: 98/37/EG

Sähkömagneettinen soveltuvuus 89/336/EWG
seuraavin täsmennyksin 91/263/EWG
92/31/EWG, 93/68/EWG

Matalajännite direktiivit: 73/23/EWG seuraavin
täsmennyksin 93/68/EWG

Käytetyt yhteensovitetut standardit, erityisesti:

CZ

Prohlášení o shodě EU

Prohlašujeme tímto, že tento agregát
v dodaném provedení odpovídá následujícím
příslušným ustanovením:

Směrnicím EU–strojní zařízení 98/37/EG

Směrnicím EU–EMV 89/336/EWG ve sledu
91/263/EWG, 92/31/EWG, 93/68/EWG

Směrnicím EU–nízké napětí 73/23/EWG ve
sledu 93/68/EWG

Použité harmonizační normy, zejména:

∆ήλωση προσαρµογής στις προδιαγραφές

GR

της Ε.Ε. (Ευρωπαϊκής Ένωσης)

∆ηλώνουµε ότι το προϊόν αυτό σ’ αυτή την
κατάσταση παράδοσης ικανοποιεί τις
ακόλουθες διατάξεις :

Οδηγίες EG σχετικά µε µηχανήµατα 98/37/EG

Ηλεκτροµαγνητική συµβατότητα EG-

89/336/EWG όπως τροποποιήθηκε
91/263/EWG 92/31/EWG, 93/68/EWG

Οδηγία χαµηλής τάσης EG–73/23/EWG όπως
τροποποιήθηκε 93/68/EWG

Εναρµονισµένα χρησιµοποιούµενα πρότυπα,
ιδιαίτερα:

1)

1)

Erwin Prieß

Quality Manager

I

Dichiarazione di conformità CE

Con la presente si dichiara che i presenti
prodotti sono conformi alle seguenti
disposizioni e direttive rilevanti:

Direttiva macchine 98/37/CE

Compatibilità elettromagnetica 89/336/CEE e
seguenti modifiche 91/263/CEE, 92/31/CEE,
93/68/CEE

Direttiva bassa tensione 73/23/CEE e
seguenti modifiche 93/68/CEE

Norme armonizzate applicate, in particolare: 1)

S

CE- försäkran

Härmed förklarar vi att denna maskin i
levererat utförande motsvarar följande
tillämpliga bestämmelser:

EG–Maskindirektiv 98/37/EG

EG–Elektromagnetisk kompatibilitet – riktlinje
89/336/EWG med följande ändringar
91/263/EWG, 92/31/EWG, 93/68/EWG

EG–Lågspänningsdirektiv 73/23/EWG med
följande ändringar 93/68/EWG

1)

Tillämpade harmoniserade normer, i synnerhet: 1)

DK

EF-overensstemmelseserklæring

Vi erklærer hermed, at denne enhed ved
levering overholder følgende relevante
bestemmelser:

EU–maskindirektiver 98/37/EG

Elektromagnetisk kompatibilitet: 89/336/EWG,
følgende 91/263/EWG, 92/31/EWG,
93/68/EWG

Lavvolts-direktiv 73/23/EWG følgende

1)

1)

93/68/EWG

Anvendte harmoniserede standarder, særligt:

PL

Deklaracja Zgodności CE

Niniejszym deklarujemy z pełną
odpowiedzialnoscią że dostarczony wyrób jest
zgdony z następującymi dokumentami:

EC–dyrektywa dla przemysłu maszynowego
98/37/EG

Odpowiedniość elektromagnetyczna
89/336/EWG ze zmianą 91/263/EWG,
92/31/EWG, 93/68/EWG

Normie niskich napięć 73/23/EWG ze zmianą
93/68/EWG

Wyroby są zgodne ze szczegółowymi normami
zharmonizowanymi:

TR

EC Uygunluk Teyid Belgesi

Bu cihazın teslim edildiği şekliyle aşağıdaki
standartlara uygun olduğunu teyid ederiz:

AB-Makina Standartları 98/37/EG

Elektromanyetik Uyumluluk 89/336/EWG ve
takip eden, 91/263/EWG, 92/31/EWG,
93/68/EWG

Alçak gerilim direktifi 73/23/EWG ve takip
eden, 93/68/EWG

Kısmen kullanılan standartlar:

1)

1)

E

Declaración de conformidad CE

Por la presente declaramos la conformidad
del producto en su estado de suministro con
las disposiciones pertinentes siguientes:

Directiva sobre máquinas 98/37/CE

Directiva sobre compatibilidad
electromagnética 89/336/CEE modificada por
91/263/CEE, 92/31/CEE, 93/68/CEE

Directiva sobre equipos de baja tensión
73/23/CEE modificada por 93/68/CEE

Normas armonizadas adoptadas, especialmente:

N

EU-Overensstemmelseserklæring

Vi erklærer hermed at denne enheten i
utførelse som levert er i overensstemmelse
med følgende relevante bestemmelser:

EG–Maskindirektiv 98/37/EG

EG–EMV–Elektromagnetisk kompatibilitet
89/336/EWG med senere tilføyelser:
91/263/EWG, 92/31/EWG, 93/68/EWG

EG–Lavspenningsdirektiv 73/23/EWG med
senere tilføyelser: 93/68/EWG

Anvendte harmoniserte standarder, særlig:

H

EK. Azonossági nyilatkozat

Ezennel kijelentjük,hogy az berendezés az
alábbiaknak megfelel:

EK Irányelvek gépekhez: 98/37/EG

Elektromágneses zavarás/türés: 89/336/EWG
és az azt kiváltó 91/263/EWG, 92/31/EWG,
93/68/EWG

Kisfeszültségü berendezések irány-Elve:
73/23/EWG és az azt kiváltó 93/68/EWG

1)

Felhasznált harmonizált szabványok, különösen:

Деклация о соответствии

RUS

1)

1)

1)

Европейским нормам

Настоящим документом заявляем, что
данный агрегат в его объеме поставки
соответствует следующим нормативным
документам:

Директивы EC в отношении машин

98/37/EG

Электромагнитная устойчивость
89/336/EWG с поправками 91/263/EWG,
92/31/EWG, 93/68/EWG

Директивы по низковольтному напряжению
73/23/EWG с поправками 93/68/EWG

Используемые согласованные стандарты и
нормы, в частности :

1)

EN 809,

1)

EN 60034-1.

WILO AG

Nortkirchenstraße 100

44263 Dortmund

ENGLISH

9

1 General Information

Installation and commissioning only by qualified personnel

1

.1 Uses

The pump is suitable for hot and cold water and other fluids free from
mineral oil and without abrasives or long-fibred substances. The main
areas of use are in water supply installations, as a booster pump, as a

boiler feeder pump, in industrial circulation systems, in process tech­nology, in cooling water systems, in fire extinguishers and in washing
and sprinkler installations.

1.2 Product data

1.2.1 Connection and electrical data (Table 1)

Pumping medium allowed

Permissible media temperature

Maximum ambient temperature
Maximum permissible working pressure: at the inlet (inlet pressure see paragraph 5.3)

at the outlet, for a 2 pole motor
at the outlet, for a 2 pole motor

Mains voltages DM: for P2 ≤ 4 kW:

for P2 ≥ 5.5 kW:

Standard motor for P2 ≤ 5.5 kW:

for P2 ≥ 7.5 kW:

Speed 2 pole version

4 pole version
Mains fuse protection
Insulation class
System of protection

Drinking water in acc. with Drinking Water Order

Heating water / service water

Condensate

Water/glycol mixture1)

Other liquid media2)

-15

°C to +120 °C

(Follow catalogue instructions)

+40 °C

16/10 bar

16/25 bar

16/16 bar

3 ~ 230/400 V ±

10 %, 50 Hz

3 ~ 400 V ± 10 %, 50 Hz

V 18 standard motor

V 1 standard motor

2900 RPM
1450 RPM

see motor rating plate

F

IP 55

better protective systems available

1

) When using a water-glycol mixture containing up to 40% glycol (or media with a viscosity different to that of pure water, the flow data for the pump must be adjusted accord-

ing to the higher viscosity of the flow media, regardless of the percentage of the viscous matter. Only use branded goods with corrosion protection-inhibitors, follow manufac­turer’s instructions.

2

) If other and also aggressive chemical fluids are to be pumped, be sure to follow catalogue instructions and first obtain the approval of WILO.

Principal dimensions and connection dimensions (Table 2, see also Fig. 3):

When ordering spare parts, please give all the information on the pump/motor rating plate.

Types PN16 version PN25 version

A B Y W Z E F J K A B Y W Z E F J K

MVI mm mm
1602 è 1614 DN50 194

252 20 215 130 300 90 125 4x18 194 252 20 215 130 300 90 125 4x18

3202 è 3216 DN65 235

235 35 195 195 320 105 145 4x18 260 260 35 220 220 320 120 145 8x18

5202 è 5212 DN80 260

260 30 220 220 320 105 160 8x18 260 260 30 220 220 320 105 160 8x18

7001 è 7007 DN100 261

350 45 280 199 380 140 180 8x19 261 350 45 280 199 380 140 190 8x23

9501 è 9506 DN100 261

350 45 280 199 380 140 180 8x19 261 350 45 280 199 380 140 190 8x23

ENGLISH

1.2.2 Type ke

Design MVI
(Multistage, vertic.
Special steel-(Inox-)
centrifugal pump)

Flow rate [m3/h]
(2-pole/ 50 Hz)

Number of
impellers in row

Material quality:
Hydraulic / Base
1 R unoccupied
2 R 1.4404 / 1.4408 (AISI 316 L)
3 R 1.4301 / GG25 (coated)

maximum permissible working
pressure [bar] PN 16 or PN 25

E

PDM seals (KTW/WRAS)

V

ITON seals

Main voltage 3 ~ 400 V

50 Hz or 60 Hz frequency
2- or 4-pole motor
Manufacturer’s key

y

MVI 16 08 3 / 16 / E / 3 - 400 - 50 - 2 / XX / X

3 ~ 230 V

2 Safety

These instructions contain important information which must be
followed when installing and operating the pump. These operating
instructions must therefore be read before assembly and commis­sioning by the installer and the responsible operator. Both the general
safety instructions in the “Safety precautions” section and those in
subsequent sections indicated by danger symbols should be carefully
observed.

2.1 Danger symbols used in these operating instructions

Safety precautions in these operating instructions which, if not
followed, could cause personal injury are indicated by the symbol:

when warning of electrical voltage with

The following symbol is used to indicate that by ignoring the relevant
safety instructions, damage could be caused to the pump/machinery
and its functions:

WARNING!

2.2 S

taff training

The personnel installing the pump must have the appropriate qualifica­tions for this work.

2.3 Risks incurred by failure to comply with the safety precautions

Failure to comply with the safety precautions could result in personal
injury or damage to the pump or installation. Failure to comply with the
safety precautions could also invalidate any claim for damages.
In particular, failure to comply with these safety precautions could give
rise, for example, to the following risks:
– Failure of important pump or machinery functions,
– Personal injury due to electrical, mechanical and bacteriological

causes.

– Damage to property.

2.4 Safety precautions for the operator

Existing regulations for the prevention of accidents must be followed.
Dangers caused by electrical energy are to be excluded. Directives
issued by the VDE [German Association of Electrical Engineers] and
the local electricity supply companies are to be observed.

2.5 Safety information for inspection and assembly

The operator is responsible for ensuring that inspection and assembly
are carried out by authorised and qualified personnel who have
studied the operating instructions closely.
Work on the pump/machinery should only be carried out when the
machine has been brought to a standstill.

2.6 Unauthorized modification and manufacture of spare parts

Changes to the pump/machinery may only be made in agreement with
the manufacturer. The use of original spare parts and accessories
authorised by the manufacturer will ensure safety. The use of any other
parts may invalidate claims invoking the liability of the manufacturer for
any consequences.

2.7 Improper use

The operating safety of the pump or installation supplied can only be
guaranteed if it is used in accordance with paragraph 1 of the operat­ing instructions. The limiting values given in the catalogue or data
sheet must neither be exceeded nor allowed to fall below those speci­fied.

3

Transport and storage

WARNING!

damage. The pump unit is to be transported with the shaft horizontal.
When storing, ensure that the pump unit cannot overturn as a result of
top-heaviness.

During transport and in storage the pump must be
protected against moisture, frost and mechanical

4 Product and accessory description

4.1 The pumps

The pump is a multistage (1–16 stages) normal suction vertical high
pressure centrifugal pump with an in-line design, i.e. the inlet and out­let pressure glands are in a line. The pump is available in 2 pressure
versions, PN 16 and PN 25 with integrally cast circular flanges.
The pump (Fig. 1) stands on a grey cast iron pump footplate which
serves as a fixing base (13). The stage casings (4) are in a multiple
modular construction. The impellers (10) are fitted on a single shaft
(11). The pressure casing (5) guarantees a fail-safe seal.
All parts that come into contact with the medium, such as stage hous­ings, impellers and pressure casings are made of chromium nickel
steel, the pump footplate (Pos. 12) with flanges (Pos. 6) of coated
GG 25 (up to 85 °C) or of chromium nickel steel (on request). The shaft
hole through the pump casing is sealed with an axial face seal (3).

MVI32C, MVI52C, MVI70 and MVI95 are equipped
with a cartridge system in order to ease standard
mechanical seal replacement without disassemb­ling the hydraulic parts.

“Spacer” feature allows not to disassemble motor on MVI32C,
MVI52C, MVI70 and MVI95 when removing mechanical seal cartridge.

The pump and motor shafts are linked together by a clutch (9). All
parts of the drinking water version (version E) which are in contact with
the fluid have been cleared by KTW and WRAS and are therefore sui­table for use with drinking water.
The speed of the pump can be controlled when connected to a
frequency converter (see paragraph 5.3).

4.2 Products delivered

– high pressure centrifugal pump

10

ENGLISH

– Check that the mains current and voltage comply with the data on

the rating plate.
– Pump/installation must be earthed in compliance with regulations.
– All motors must be fitted with a motor safety switch by the customer

to prevent the motor from overheating.

Adjusting the motor safety switch:
Direct starting current: Adjust to nominal current of the motor in

accordance with the data on the motor rating plate.

Y

-∆

-start: If the motor safety switch is connected as a star or triangu-

lar safety circuit combination at the supply line it can be adjusted in the
same way units operating on direct starting current. If the motor safety
switch is connected to the motor supply line in phase (U1/V1/W1 or
U2/V2/W2), then the motor safety switch should be adjusted to the
value of 0.58 of the nominal motor current.
– The mains cable can be inserted to the left or the right of the termi-

nal box. Open the appropriate hole by removing the moulded cover,

unscrew the PG connector and push the cable through the PG

connector.
– The supply cable must be protected against the effects of heat and

vibrations which may come from the motor or the pump.
– When using the pump in machinery where the water temperature

exceeds 90 °C, a connecting pipe with corresponding heat

resistance must be used.
– Connections to the mains must be carried out in accordance with

the plan of terminal connections for rotary or alternating current in

the terminal box of the pump (Fig. 4).
– The terminal box can be better positioned by rotating the motor

through steps of 90°. To this end the connecting screws (Fig. 1,

Pos. 1) of the lantern (Fig. 1, Pos. 8) and motor flange are to be

loosened.

In the case of internal connecting screws the clutch guard (Fig. 1,

Pos. 2) is to be removed beforehand. When assembling the clutch

guard, do not forget to tighten the safety screw.

5.3 Operation with frequency converter

The speed of the pump can be controlled when connected to a
frequency converter.
See Installation and Operating Instructions of the frequency converter
for connection and operation.
The frequency converter may not generate a speed due to increased
voltage greater than 2500 V/µs and voltage peaks û > 1000 V, as
otherwise the motor coil will be destroyed. If such speeds due to the
increased voltage are possible, an LC filter (motor filter) should be
installed between the frequency converter and the motor.

6 Commissioning

In order to protect the axial face seal, the pump
must not run dry.

– Close both isolating valves and open the vent screw (Fig. 2, 5) by

one and a half or two turns.
– Slowly open the isolating valve (Fig. 2, 2) at the inlet until the air has

escaped from the vent screw and the fluid to be pumped comes

out. The escaping air will be clearly heard hissing. Tighten the vent

screw.
– Slowly open the isolating valve at the outlet (Fig. 2, 3). The mano-

meter installed at the outlet should be checked for any possible

pressure instabilities, indicated by a flickering manometer pointer. If

the pressure is unstable, allow more air to escape.

When the temperature of the liquid being pumped is high
and the system is pressurised, any flow escaping from the
vent screw can cause scalding and injuries. The vent
screw should therefore be loosen only slightly.

– When used for the first time, if it is to be used to pump drinking

water the system must be flushed through, so that any dirty water

present will not contaminate the drinking water supply.
– Checking the direction of rotation (only for rotary current motors):

Check that the pump rotates in the same direction indicated by the

arrow on the pump casing by switching on for a short time. If this is

not the case, interchange 2 phases in the terminal box.

WARNING!

– Installation and operating instructions

4.3 Accessories

see catalogue or data sheet

5 Assembly/Installation

– See the rating plate of the pump and the rating plate of the motor

5.1 Assembly

WARNING!

work has been completed. Dirt will damage the pump.
– Install the pump in a dry place free of frost.

– Install in a horizontal and flat position. If the pump is positioned on

an incline the bearing will wear more quickly.

– Install the pump in an easily accessible place to facilitate inspection

and disassembly. Always install the pump exactly perpendicular on a
sufficiently heavy concrete base (Fig. 2, 3). Fit a vibration absorber
between the base and the floor.

– Dimensions for installation and connections are given in Paragraph

1.2.1, Table 2 and in Fig. 3.

– In the case of heavy pumps fit a hook (Fig. 2, Pos. 12) or eye with a

suitable load-bearing capacity (total weight of pump: see catalogue/
data sheet) vertically above the pump, to which a hoist or similar
device can be attached when maintaining or repairing the pump.
Allow for a free size when completed of min. 200 mm.

– The arrow on the pump casing indicates the direction of flow.
– Fit the inlet and outlet pipes without stress. Install below expansion

joints of restricted length to absorb vibrations. The pipes must be
attached (Fig. 2, 7) in such a way that the pump does not bear the
weight of the pipes.

– Isolation mechanisms (Fig. 2, 2 & 3) must in principle be installed in

front of and behind the pump to avoid having to empty and refill the
whole installation when inspecting or changing the pump.

– To avoid pressure loss it is recommended that you choose as short

an inlet pipe as possible, choose a nominal width for the suction
pipe which is larger by a nominal width than the pump connection

and avoid constrictions caused by bends and valves.
– A backflow preventer (Fig. 2, 4) should be fitted in the outlet pipe.
– For differential pressures > 6 bar the backflow preventer (Fig. 2,

Pos. 4) is to be fitted in the suction pipe. It is not required at the

outlet.
– The axial face seal should be protected against dry running. An inlet

pressure gauge or level gauge should be installed by the customer.
– If the pump is to be connected indirectly via a reservoir, a suction

strainer (Fig. 2, 8) must be provided in the inlet pipe by the customer

to prevent coarse impurities entering the pump.
– With limited nominal pressure PN, ensure that this pressure is pro-

duced from the inlet pressure and the zero flow level:

– For gaseous or hot pumping media a bypass pipe is to be fitted to

the pump (Fig. 2, Pos. BP), (accessory).

5.2 Electrical connection

Assembly should only take place once all welding
and soldering work and the rinsing of the pipe net-

P

≤ PN - P

Inlet

Electrical connection should be made by a qualified electri­cian. Current national regulations must be observed (e.g.
VDE regulations in Germany).

max pump

11

ENGLISH

For pumps with a star or triangular circuit starting current, the

connections of two coils must be interchanged, e.g. U1 with V1 and

U2 with V2.
– If the fluid temperature is too high, steam may form which may

damage the pump. The pump must therefore not run with the valve

closed for longer than 10 minutes when pumping cold water or for

longer than five minutes when pumping fluid where > 60

°C.

We recommend that the flow rate does not drop to below 10 % of

the nominal flow rate so as to avoid a build up of steam in the pump.
– If there is a build up of steam, this should be allowed to escape by

carefully opening the vent screw.

Both pump and motor can reach operating temperatures
> 100 °C. Therefore exercise caution when touching the
pump.

7 Maintenance

Before carrying out any maintenance work, switch off the
pump and ensure that it cannot be switched on again by
unauthorised people. Never carry out work on a running
pump.

– During the running-in period, there may be some dripping from the

axial face seal. In the event of a serious leak as a result of heavy

wear have the mechanical seal replaced by a specialist.
– Increased bearing noise and unusual vibrations indicate a worn

bearing. In this case, have the bearing replaced by a specialist.
– If the pump is exposed to frost, the pump and pipework must be

emptied in the cold season. Close the isolating valve and open the

drain valve (Fig. 2, 6) and the vent screw (Fig. 2, 5) of the pump.

The isolating valve must be closed before the drain valve is
opened.

– If placed in a frost-free location, the pump does not have to be emp­tied, even if it is out of service for a long period.

Type

< 22 kW

22 kW

✔

✔ ✔

✔ ✔

✔ ✔

✔

✔

✔

✔

30 kW 37 kW 45 kW

MVI 16

MVI 32

MVI 52

MVI 70

MVI 95

On pumps equipped with greaser under bearing box (table below), see
greasing instructions written on sticker put on it:

For pumps equipped with coupling bush, check it
before reassembling.

12

8 Problems, Causes and Solutions

ENGLISH

Problem

Pump does not run

Pump runs but does not pump

Pump does not pump evenly

Pump vibrates and is noisy

Motor overheats

motor cut-out activates

Cause

no power

motor safety switch activated

Incorrect direction of rotation

pipe or pump components blocked by
foreign body

air in inlet pipe

inlet pipe too narrow

valve not sufficiently open

air in the pump

foreign body in the pump

pump not properly fixed to the base

bearing damaged

one phase interrupted

pump sluggish:

foreign body

Solutions

check fuses, cables and connections

Eliminate motor overload

check direction of rotation and correct if necessary

Check and clean pipe and pump

Seal inlet pipe

fit a larger inlet pipe

open valve

bleed the pump

remove foreign body

tighten anchor bolts

consult customer services

check fuses, cables and connections

clean pump

bearing damaged

ambient temperature too high

If the fault cannot be remedied, please contact your plumbing and heating specialist or your nearest WILO customer services or
representative.

Subject to technical alterations!

have pump repaired by customer services

provide cooling

13

WILO AG
Nortkirchenstraße 100
44263 Dortmund
Germany
T [phone]
F [phone]
www.wilo.com

Azerbaijan

370141 Baku
T [phone]
F [phone]
[e-mail]

Bosnia and Herzegovina

71000 Sarajevo
T [phone]
F [phone]
[e-mail]

Croatia

10000 Zagreb
T [phone]
F [phone]
[e-mail]

Georgia

38007 Tbilisi
T/F [phone]
[e-mail]

Macedonia

1000 Skopje
T/F [phone]
[e-mail]

Moldova

2012 Chisinau
T/F [phone]
[e-mail]

Tajikistan

734025 Dushanbe
T [phone]
[e-mail]

Uzbekistan

700029 Taschkent
T/F [phone]
[e-mail]

März 2005

Wilo – International (Subsidiaries)

Wilo – International (Representation offices)

Austria

WILO Handelsges. m.b.H.
1230 Wien
T [phone]
F [phone]
[e-mail]

Belarus

WILO Bel OOO
220035 Minsk
T [phone]
[e-mail]

Belgium

WILO NV/SA
1083 Ganshoren
T [phone]
F [phone]
[e-mail]

Bulgaria

WILO Bulgaria EOOD
1125 Sofia
T [phone]
F [phone]
[e-mail]

Canada

WILO Canada Inc.
Calgary, Alberta T2A5L4
T [phone]
F [phone]
[e-mail]

China

WILO SALMSON (Beijing)
Pumps System Ltd.
101300 Beijing
T [phone]
F [phone]
[e-mail]

Czech Republic

WILO Praha s.r.o.
25101 Cestlice
T [phone]
F [phone]
[e-mail]

Denmark

WILO Danmark A/S
2690 Karlslunde
T [phone]
F [phone]
[e-mail]

Finland

WILO Finland OY
02320 Espoo
T [phone]
F [phone]
[e-mail]

France

WILO S.A.S.
78310 Coignières
T [phone]
F [phone]
[e-mail]

Great Britain

WILO SALMSON Pumps Ltd.
DE14 2WJ Burton-on-Trent
T [phone]
F [phone]
[e-mail]

Greece

WILO Hellas AG
14569 Anixi (Attika)
T [phone]
F [phone]
[e-mail]

Hungary

WILO Magyarország Kft
1144 Budapest XIV
T [phone] Sales Dep.

46770-80 Tech. Serv.
F [phone]
[e-mail]

Ireland

WILO Engineering Ltd.
Limerick
T [phone]
F [phone]
[e-mail]

Italy

WILO Italia s.r.l.
20068 Peschiera Borromeo
(Milano)
T [phone]
F [phone]
[e-mail]

Kazakhstan

TOO WILO Central Asia
480100 Almaty
T [phone]
F [phone]
[e-mail]

Korea

WILO Industries Ltd.
137-818 Seoul
T [phone]
F [phone]
[e-mail]

Latvia

WILO Baltic SIA
1019 Riga
T [phone]
F [phone]
[e-mail]

Lebanon

WILO SALMSON
Lebanon s.a.r.l.
12022030 El Metn
T [phone]
F [phone]
[e-mail]

Lithuania

UAB WILO Lietuva
03202 Vilnius
T [phone]
F [phone]
[e-mail]

The Netherlands

WILO Nederland b.v.
1948 RC Beverwijk
T [phone]
F [phone]
[e-mail]

Norway

WILO Norge A/S
0901 Oslo
T [phone]
F [phone]
[e-mail]

Poland

WILO Polska Sp. z.o.o.
05-090 Raszyn k/Warszawy
T [phone]
F [phone]
[e-mail]

Portugal

Bombas Wilo-Salmson
Portugal
4050-040 Porto
T [phone]
F [phone]
[e-mail]

Romania

WILO Romania s.r.l.
7000 Bucuresti
T [phone]
F [phone]
[e-mail]

Russia

WILO Rus o.o.o.
123592 Moskau
T [phone]
F [phone]
[e-mail]

Serbia & Montenegro

WILO Beograd d.o.o.
11000 Beograd
T [phone]
F [phone]
[e-mail]

Slovakia

WILO Slovakia s.r.o.
82008 Bratislava 28
T [phone]
F [phone]
[e-mail]

Slovenia

WILO Adriatic d.o.o.
1000 Ljubljana
T [phone]
F [phone]
[e-mail]

Spain

WILO Ibérica S.A.
28806 Alcalá de Henares
(Madrid)
T [phone]
F [phone]
[e-mail]

Sweden

WILO Sverige AB
35033 Växjö
T [phone]
F [phone]
[e-mail]

Switzerland

EMB Pumpen AG
4310 Rheinfelden
T [phone]
F [phone]
[e-mail]

Turkey

WILO Pompa Sistemleri
San. ve Tic. A.S¸.
34530 Istanbul
T [phone]
F [phone]
[e-mail]

Ukraina

WILO Ukraina t.o.w.
01033 Kiew
T [phone]
F [phone]
[e-mail]

USA

WILO USA LLC
Calgary, Alberta T2A5L4
T [phone]
F [phone]
[e-mail]

WILO AG
Nortkirchenstraße 100
44263 Dortmund
Germany
T 0231 4102-0
F 0231 4102-7363
[e-mail]
www.wilo.de

G1 Nord

WILO AG
Ver triebsbüro Hamburg
Sinstorfer Kirchweg 74–92
21077 Hamburg
T 040 5559490
F 040 55594949

G2 Ost

WILO AG
Ver triebsbüro Berlin
Juliusstraße 52–53
12051 Berlin-Neukölln
T 030 6289370
F 030 62893770

G3 Sachsen/Thüringen

WILO AG
Ver triebsbüro Dresden
Frankenring 8
01723 Kesselsdorf
T 035204 7050
F 035204 70570

G4 Südost

WILO AG
Ver triebsbüro München
Landshuter Straße 20
85716 Unterschleißheim
T 089 4200090
F 089 42000944

G5 Südwest

WILO AG
Ver triebsbüro Stuttgart
Hertichstraße 10
71229 Leonberg
T 07152 94710
F 07152 947141

G6 Rhein-Main

WILO AG
Ver triebsbüro Frankfurt
An den drei Hasen 31
61440 Oberursel/Ts.
T 06171 70460
F 06171 704665

G7 West

WILO AG
Ver triebsbüro Düsseldorf
Hans-Sachs-Straße 4
40721 Hilden
T 02103 90920
F 02103 909215

G8 Nordwest

WILO AG
Ver triebsbüro Hannover
Ahrensburger Straße 1
30659 Hannover-Lahe
T 0511 438840
F 0511 4388444

Zentrale Auftragsbearbeitung
für den Fachgroßhandel

WILO AG
Auftragsbearbeitung
Nortkirchenstraße 100
44263 Dortmund
T 0231 4102-0
F 0231 4102-7555

Wilo-Kompetenz-Team

–Antworten auf alle Fragen

rund um das Produkt,
Lieferzeiten, Versand,

Verkaufspreise
–Abwicklung Ihrer Aufträge
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für alle gängigen

Ersatzteile
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Informationsmaterial

T 01805 R•U•F•W•I•L•O*

7•8•3•9•4•5•6

F 0231 4102-7666

Werktags erreichbar

von 7–18 Uhr

Wilo-Kundendienst

WILO AG
Wilo-Service-Center
Nortkirchenstraße 100
44263 Dortmund

–Kundendienststeuerung
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T 01805 W•I•L•O•K•D*

9•4•5•6•5•3

0231 4102-7900

F 0231 4102-7126

Werktags erreichbar von
7–17 Uhr, ansonsten
elektronische Bereitschaft mit
Rückruf-Garantie!

Wilo-International

Österreich

Zentrale Wien:
WILO Handelsgesellschaft mbH
Eitnergasse 13
1230 Wien
T [phone]
F [phone]

Ver triebsbüro Salzburg:
Gnigler Straße 56
5020 Salzburg
T [phone]
F [phone]

Ver triebsbüro Oberösterreich:
Trattnachtalstraße 7
4710 Grieskirchen
T [phone]
F [phone]

Schweiz

EMB Pumpen AG
Gerstenweg 7
4310 Rheinfelden
T [phone]
F [phone]

Standorte weiterer
Tochtergesellschaften

Belarus, Belgien, Bulgarien, China,
Dänemark, Finnland, Frankreich,
Griechenland, Großbritannien,
Irland, Italien, Kanada,
Kasachstan, Korea, Libanon,
Litauen, Lettland, Niederlande,
Norwegen, Polen, Rumänien,
Russland, Schweden, Serbien &
Montenegro, Slowakei,
Slowenien, Spanien, Tschechien,
Türkei, Ukraine, Ungarn

Die Adressen finden Sie unter

www.wilo.de oder
www.wilo.com.

Stand März 2005

* 12 Cent pro Minute

Wilo-Vertriebsbüros