Grundfos NB Series User manual

NB, NBG
GRUNDFOS INSTRUCTIONS
Installation and operating instructions

2
Declaration of Conformity
We Grundfos declare under our sole responsibility that the products
NB and NBG, to which this declaration relates, are in conformity with the
Council Directives on the approximation of the laws of the EC Member
States relating to
— Machinery (98/37/EC).
Standard used: EN 809.
— Electrical equipment designed for use within certain voltage limits
(73/23/EEC).
Standards used: MG, MMG, Siemens, Teco: EN 60204-1, EN 60034-1
and EN 60034-5; MMGE: EN 61800-2.
— Electromagnetic compatibility (89/336/EEC).
Standards used: MG, MMG, Siemens, Teco: EN 61000-6-2 and
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EC (applies only to products with the ATEX mark on the
nameplate).
Standards used: EN 13463-1 and EN 13463-5. (Declaration of con-
formity and installation and operating instructions of the motor are
enclosed.)
Konformitätserklärung
Wir Grundfos erklären in alleiniger Verantwortung, dass die Produkte
NB und NBG, auf die sich diese Erklärung bezieht, mit den folgenden
Richtlinien des Rates zur Angleichung der Rechtsvorschriften der EG-
Mitgliedstaaten übereinstimmen:
— Maschinen (98/37/EG).
Norm, die verwendet wurde: EN 809.
— Elektrische Betriebsmittel zur Verwendung innerhalb bestimmter
Spannungsgrenzen (73/23/EWG).
Normen, die verwendet wurden: MG, MMG, Siemens, Teco:
EN 60204-1, EN 60034-1 und EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetische Verträglichkeit (89/336/EWG).
Normen, die verwendet wurden: MG, MMG, Siemens, Teco:
EN 61000-6-2 und EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EG (gilt nur für Produkte mit der ATEX-Kennzeichnung auf
dem Leistungsschild).
Normen, die verwendet wurden: EN 13463-1 und EN 13463-5.
(Die Konformitätsbescheinigung und Bedienungsanleitung vom Motor
sind beigefügt.)
Déclaration de Conformité
Nous Grundfos déclarons sous notre seule responsabilité que les produits
NB et NBG auxquels se réfère cette déclaration sont conformes aux Direc-
tives du Conseil concernant le rapprochement des législations des Etats
membres CE relatives à
— Machines (98/37/CE).
Standard utilisé: EN 809.
— Matériel électrique destiné à employer dans certaines limites
de tension (73/23/CEE).
Standards utilisés: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 et EN 60034-5; MMGE: EN 61800-2.
— Compatibilité électromagnétique (89/336/CEE).
Standards utilisés: MG, MMG, Siemens, Teco: EN 61000-6-2 et
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/CE (s’applique uniquement aux produits avec norme ATEX
citée sur la plaque signalétique).
Standards utilisés: EN 13463-1 et EN 13463-5. (Declaration de confor-
mité et notice d'installation et d'entretien du moteur incluses.)
Dichiarazione di Conformità
Noi Grundfos dichiariamo sotto la nostra esclusiva responsabilità che i
prodotti NB e NBG ai quali questa dichiarazione se riferisce sono conformi
alle Direttive del Consiglio concernente il ravvicinamento delle legislazioni
degli Stati membri CE relative a
— Macchine (98/37/CE).
Standard usato: EN 809.
— Materiale elettrico destinato ad essere utilizzato entro certi limiti di ten-
sione (73/23/CEE).
Standard usati: MG, MMG, Siemens, Teco: EN 60204-1, EN 60034-1 e
EN 60034-5; MMGE: EN 61800-2.
— Compatibilità elettromagnetica (89/336/CEE).
Standard usati: MG, MMG, Siemens, Teco: EN 61000-6-2 e
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/CE (si applica solo ai prodotti che riportano la sigla ATEX
sull’etichetta).
Standard usati: EN 13463-1 e EN 13463-5. (In allegato la dichiara-
zione di conformità e il manuale di installazione e funzionamento.)
Declaración de Conformidad
Nosotros Grundfos declaramos bajo nuestra única responsabilidad que
los productos NB y NBG a los cuales se refiere esta declaración son
conformes con las Directivas del Consejo relativas a la aproximación de
las legislaciones de los Estados Miembros de la CE sobre
— Máquinas (98/37/CE).
Norma aplicada: EN 809.
— Material eléctrico destinado a utilizarse con determinadas límites de
tensión (73/23/CEE).
Normas aplicadas: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 y EN 60034-5; MMGE: EN 61800-2.
— Compatibilidad electromagnética (89/336/CEE).
Normas aplicadas: MG, MMG, Siemens, Teco: EN 61000-6-2 y
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/CE (se refiere sólo a productos con la marca ATEX en la
placa de características).
Normas aplicadas: EN 13463-1 y EN 13463-5. (Se adjuntan la decla-
ración de conformidad e instrucciones de instalación y funcionamiento
del motor.)
Declaração de Conformidade
Nós Grundfos declaramos sob nossa única responsabilidade que os pro-
dutos NB e NBG aos quais se refere esta declaração estão em conformi-
dade com as Directivas do Conselho das Comunidades Europeias
relativas à aproximação das legislações dos Estados Membros respeitan-
tes à
— Máquinas (98/37/CE).
Norma utilizada: EN 809.
— Material eléctrico destinado a ser utilizado dentro de certos limites de
tensão (73/23/CEE).
Normas utilizadas: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 e EN 60034-5; MMGE: EN 61800-2.
— Compatibilidade electromagnética (89/336/CEE).
Normas utilizadas: MG, MMG, Siemens, Teco: EN 61000-6-2 e
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/CE (apenas aplicável a produtos com a inscrição ATEX
gravada na chapa de características).
Normas utilizadas: EN 13463-1 e EN 13463-5. (Em anexo encontra a
Declaração de conformidade e instruções de instalação e funciona-
mento do motor.)
Δήλωση Συμμόρφωσης
Εμείς ηGrundfos δηλώνουμε με αποκλειστικά δική μας ευθύνη ότι τα
προιόντα NB και NBG συμμορφώνονται με την Οδηγία του Συμβουλίου επί
της σύγκλισης των νόμων των Κρατών Mελών της Ευρωπαικής Ενωσης σε
σχέση με τα
—Μηχανήματα (98/37/EC).
Πρότυπο που χρησιμοποιήθηκε: EN 809.
—Ηλεκτρικές συσκευές σχεδιασμένες γιά χρήση εντός ορισμένων ορίων
ηλεκτρικής τάσης (73/23/EEC).
Πρότυπα που χρησιμοποιήθηκαν: MG, MMG, Siemens, Teco:
EN 60204-1, EN 60034-1 και EN 60034-5; MMGE: EN 61800-2.
—Ηλεκτρομαγνητική συμβατότητα (89/336/EEC).
Πρότυπα που χρησιμοποιήθηκαν: MG, MMG, Siemens, Teco:
EN 61000-6-2 και EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EC (εφαρμόζεται μόνο σε προϊόντα με το σήμα ATEX στην
πινακίδα τους).
Πρότυπα που χρησιμοποιήθηκαν: EN 13463-1 και EN 13463-5.
(Περιλαμβάνονται δήλωση συμμόρφωσης και οδηγίες εγκατάστασης
και λειτουργίας του κινητήρα.)
Overeenkomstigheidsverklaring
Wij Grundfos verklaren geheel onder eigen verantwoordelijkheid dat de
produkten NB en NBG waarop deze verklaring betrekking heeft in overeen-
stemming zijn met de Richtlijnen van de Raad inzake de onderlinge aan-
passing van de wetgevingen van de Lid-Staten betreffende
— Machines (98/37/EG).
Norm: EN 809.
— Elektrisch materiaal bestemd voor gebruik binnen bepaalde
spanningsgrenzen (73/23/EEG).
Normen: MG, MMG, Siemens, Teco: EN 60204-1, EN 60034-1 en
EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetische compatibiliteit (89/336/EEG).
Normen: MG, MMG, Siemens, Teco: EN 61000-6-2 en EN 61000-6-3;
MGE/MMGE: EN 61800-3.
— ATEX 94/9/EG (alleen van toepassing voor producten met de ATEX
markering op de typeplaat).
Normen: EN 13463-1 en EN 13463-5. (Overeenkomstigheidsverklaring
is ingesloten in de bedienings- en installatievoorschriften van de
motor.)

3
Försäkran om överensstämmelse
Vi Grundfos försäkrar under ansvar, att produkterna NB och NBG, som
omfattas av denna försäkran, är i överensstämmelse med Rådets Direktiv
om inbördes närmande till EU-medlemsstaternas lagstiftning, avseende
— Maskinell utrustning (98/37/EC).
Använd standard: EN 809.
— Elektrisk material avsedd för användning inom vissa spänningsgränser
(73/23/EC).
Använda standarder: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 och EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetisk kompatibilitet (89/336/EC).
Använda standarder: MG, MMG, Siemens, Teco: EN 61000-6-2 och
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EC (endast för produkter med ATEX-märkning på
typskylten).
Använda standarder: EN 13463-1 och EN 13463-5. (Försäkran om
överensstämmelse samt monterings- och driftsinstruktion medföljer
medlevererad motor.)
Vastaavuusvakuutus
Me Grundfos vakuutamme yksin vastuullisesti, että tuotteet NB ja NBG,
jota tämä vakuutus koskee, noudattavat direktiivejä jotka käsittelevät EY:n
jäsenvaltioiden koneellisia laitteita koskevien lakien yhdenmukaisuutta
seur.:
— Koneet (98/37/EY).
Käytetty standardi: EN 809.
— Määrättyjen jänniterajoitusten puitteissa käytettävät sähköiset laitteet
(73/23/EY).
Käytetyt standardit: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 ja EN 60034-5; MMGE: EN 61800-2.
— Elektromagneettinen vastaavuus (89/336/EY).
Käytetyt standardit: MG, MMG, Siemens, Teco: EN 61000-6-2 ja
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EY (soveltuu vain tuotteisiin, joissa on ATEX-merkintä
arvokilvessä).
Käytetyt standardit: EN 13463-1 ja EN 13463-5. (Moottorin vaatimus-
tenmukaisuusvakuutus ja käyttöohjeet sisältyvät toimitukseen.)
Overensstemmelseserklæring
Vi Grundfos erklærer under ansvar at produkterne NB og NBG, som
denne erklæring omhandler, er i overensstemmelse med Rådets direktiver
om indbyrdes tilnærmelse til EF medlemsstaternes lovgivning om
— Maskiner (98/37/EF).
Anvendt standard: EN 809.
— Elektrisk materiel bestemt til anvendelse inden for visse spændings-
grænser (73/23/EØF).
Anvendte standarder: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 og EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetisk kompatibilitet (89/336/EØF).
Anvendte standarder: MG, MMG, Siemens, Teco: EN 61000-6-2,
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EF (gælder kun for produkter med ATEX-mærkning på
typeskiltet).
Anvendte standarder: EN 13463-1 og EN 13463-5. (Motorens
overensstemmelseserklæring og monterings- og driftsinstruktion er
vedlagt.)
Deklaracja zgodności
My, Grundfos, oświadczamy z pełnąodpowiedzialnością, że nasze wyroby
NB oraz NBG, których deklaracja niniejsza dotyczy, sązgodne z
następującymi wytycznymi Rady d/s ujednolicenia przepisów prawnych
krajów członkowskich EG:
— maszyny (98/37/EG),
zastosowana norma: EN 809.
— wyposażenie elektryczne do stosowania w określonym zakresie
napięć (73/23/EWG),
zastosowane normy: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 i EN 60034-5; MMGE: EN 61800-2.
— zgodność elektromagnetyczna (89/336/EWG),
zastosowane normy: MG, MMG, Siemens, Teco: EN 61000-6-2 i
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EG (dotyczy tylko wyrobów ze znakiem ATEX na tabliczce
znamionowej),
zastosowane normy: EN 13463-1 i EN 13463-5, (deklaracja zgodności
oraz instrukcja obsługi i eksploatacji silnika sązałączone.)
Декларация осоответствии
Мы, фирма Grundfos, со всей ответственностью заявляем, что
изделия NB иNBG, ккоторым иотносится данное свидетельство,
отвечают требованиям следующих указаний Совета ЕС об унификации
законодательных предписаний стран-членов ЕС:
—Машиностроение (98/37/ЕС).
Применявшиеся стандарты: Евростандарт EN 809.
—Электрические машины для эксплуатации впределах
определенного диапазона значений напряжения
(73/23/ЕЭС).
Применявшиеся стандарты: MG, MMG, Siemens, Teco:
Евростандарт EN 60204-1, EN 60034-1 иEN 60034-5; MMGE:
EN 61800-2.
—Электромагнитная совместимость (89/336/ЕЭС).
Применявшиеся стандарты: MG, MMG, Siemens, Teco:
Евростандарт EN 61000-6-2 иEN 61000-6-3; MGE/MMGE:
EN 61800-3.
— ATEX 94/9/EC (действительно только для изделий смаркировкой
ATEX на фирменной табличке стехническими данными).
Применявшиеся стандарты: EN 13463-1 иEN 13463-5.
(Заявление о соответствии ируководство по монтажу и
эксплуатации электродвигателя прилагаются.)
Konformitási nyilatkozat
Mi, a Grundfos, egyedüli felelősséggel kijelentjük, hogy az NB és NBG
termékek, amelyekre jelen nyilatkozat vonatkozik, megfelelnek az Európai
Unió tagállamainak jogi irányelveit összehangoló tanács alábbi
irányelveinek:
— Gépek (98/37/EK).
Alkalmazott szabvány: EN 809.
— Meghatározott feszültség határokon belül használt elektromos
eszközök (73/23/EGK).
Alkalmazott szabványok: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 és EN 60034-5; MMGE: EN 61800-2.
— Elektromágneses összeférhetőség (89/336/EGK).
Alkalmazott szabványok: MG, MMG, Siemens, Teco: EN 61000-6-2 és
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EK (csak az ATEX jelzéssel ellátott termékekre
vonatkozik).
Alkalmazott szabványok: EN 13463-1 és EN 13463-5. (A motor
kezelési utasítása és megelelőségi nyilatkozata mellékelve.)
Izjava o ustreznosti
Mi, Grundfos,pod polno odgovornostjo izjavljamo, da so izdelki NB in
NBG,na katere se ta izjava nanaša, v skladu z naslednjimi smernicami
Sveta za uskladitev pravnih predpisov držav članic Evropske skupnosti:
— Stroji (98/37/EG).
Uporabljena norma: EN 809.
—Električna pogonska sredstva za uporabo v določenih napetostnih
mejah (73/23/EWG).
Uporabljeni normi: Standards used: MG, MMG, Siemens, Teco:
EN 60204-1, EN 60034-1 in EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetna kompatibilnost (89/336/EWG).
Uporabljeni normi: MG, MMG, Siemens, Teco: EN 61000-6-2 in
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EG (velja samo za izdelke z oznako ATEX na tipski
ploščici).
Uporabljeni normi: EN 13463-1 in EN 13463-5. (Izjava o ustreznosti ter
navodila za montažo in obratovanje motorja sta priložena.)
Izjava o usklađenosti
Mi, Grundfos, izjavljujemo uz punu odgovornost, da su proizvodi NB i
NBG,na koje se ova izjava odnosi, sukladni smjernicama Savjeta za
prilagodbu propisa država-članica EZ:
— Strojevi (98/37/EZ).
Korištena norma: EN 809.
—Električni pogonski uređaji za korištenje unutar određenih granica
napona (73/23/EEZ).
Korištene norme: MG, MMG, Siemens, Teco: EN 60204-1, EN 60034-1
i EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetska kompatibilnost (89/336/EEZ).
Korištene norme: MG, MMG, Siemens, Teco: EN 61000-6-2 i
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EZ (vrijedi samo za proizvode s ATEX-znakom na natpisnoj
pločic).
Korištene norme: EN 13463-1 i EN 13463-5. (Deklaracija o
usklađenosti te motažne i pogonske upute priloženi su uz motor.)

4
Izjava o konformitetu
Mi, Grundfos, izjavljujemo pod potpunom odgovornošću da su proizvodi NB i
NBG na koje se odnosi ova izjava u saglasnosti sa smernicama i
uputstvima Saveta za usaglašavanje pravnih propisa članica Evropske
unije:
— mašine (98/37/EG),
korišćen standard: EN 809.
—električna oprema razvijena za korišćenje unutar određenih naponskih
granica (73/23/EWG),
korišćeni standardi: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 i EN 60034-5; MMGE: EN 61800-2.
— elektromagnetna usaglašenost (89/336/EWG),
korišćeni standardi: MG, MMG, Siemens, Teco: EN 61000-6-2 i
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EG (odnosi se samo na proizvode sa natpisom ATEX na
natpisnoj pločici),
korišćeni standardi: EN 13463-1 i EN 13463-5, (deklaracija
konformiteta i uputstva za instalaciju i rad motora su priloženi.)
Declaraţie de conformitate
Noi, Grundfos, declarăm asumându-ne întreaga responsabilitate că
produsele NB,NBG la care se referăaceastădeclaraţie sunt în
conformitate cu Directivele Consiliului în ceea ce priveşte alinierea
legislaţiilor Statelor Membre ale CE, referitoare la:
— Utilaje (98/37/CE).
Standard aplicat: EN 809.
— Echipamente electrice destinate utilizării între limite exacte de
tensiune (73/23/CEE).
Standarde aplicate: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 şi EN 60034-5; MMGE: EN 61800-2.
— Compatibilitate electromagnetică(89/336/CEE).
Standarde aplicate: MG, MMG, Siemens, Teco: EN 61000-6-2 şi
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/CE (se aplicănumai la produsele cu marca ATEX pe
plăcuţa de înmatriculare).
Standarde aplicate: EN 13463-1 şi EN 13463-5. (Declaraţia de
conformitate şi instrucţiunile de instalare şi operare ale motorului sunt
incluse.)
Декларация за съответствие
Ние, фирма Grundfos заявяваме спълна отговорност, че продуктите
NB иNBG, за които се отнася настоящата декларация, отговарят на
следните указания на Съвета за уеднаквяване на правните
разпоредби на държавите членки на ЕО:
—Машини (98/37/EO).
Приложена норма: EN 809.
—Електрически машини исъоръжения за употреба врамките на
определени граници на напрежение на електрическия ток
(73/23/EИO).
Приложени норми: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 иEN 60034-5; MMGE: EN 61800-2.
—Електромагнетична поносимост (89/336/EИO).
Приложени норми: MG, MMG, Siemens, Teco: EN 61000-6-2 и
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EO (отнася се само за продукти със символа ATEX
върху табелата сданни).
Приложени норми: EN 13463-1 иEN 13463-5. (Приложени са също
иДекларацията за съответствие иинструкциите за монтаж и
експлоатация на двигателя.)
Prohlášení o konformitě
My firma Grundfos prohlašujeme na svou plnou odpovědnost, že výrobky
NB a NBG na něž se toto prohlášení vztahuje, jsou v souladu s
ustanoveními směrnice Rady pro sblížení právních předpisůčlenských
státůEvropského společenství v oblastech:
— strojírenství (98/37/EG),
použitá norma: EN 809.
— provozování spotřebičů v toleranci napětí (73/23/EWG),
použité normy: MG, MMG, Siemens, Teco: EN 60204-1, EN 60034-1 a
EN 60034-5; MMGE: EN 61800-2.
— elektromagnetická kompatibilita (89/336/EWG),
použité normy: MG, MMG, Siemens, Teco: EN 61000-6-2 a
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EG (týká se pouze výrobkůnesoucích na typovém štítku
značku ATEX),
použité normy: EN 13463-1 a EN 13463-5, (prohlášení o konformitěa
instalační a provozní předpisy motoru jsou přiloženy.)
Prehlásenie o konformite
My firma Grundfos, na svoju plnú zodpovednost’prehlasujeme, že výrobky
NB,NBG, na ktoré sa toto prehlásenie vzt’ahuje, sú v súlade s
nasledovnými smernicami Rady pro zblíženie právnych predpisov
členských zemí Európskej únie:
— Stroje (98/37/EG),
Použitá norma: EN 809.
— Elektrické prevádzkové prostriedky, použité v určitom napät’ovom
rozsahu (73/23/EWG),
Použité normy: MG, MMG, Siemens, Teco: EN 60204-1, EN 60034-1 a
EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetická kompatibilita (89/336/EWG),
Použité normy: MG, MMG, Siemens, Teco: EN 61000-6-2 a
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EG (týka sa iba výrobkov nesúcich na typovom štítku
značku ATEX).
Použité normy: EN 13463-1 a EN 13463-5. (Prehlásenie o konformite
a montážny a prevádzkový návod motora sú priložené.)
Uygunluk Bildirgesi
Biz Grundfos olarak, bu beyanda belirtilen NB ve NBG ürünlerinin,
— Makina (98/37/EC).
Kullanılan standart: EN 809.
— Belli voltaj sınırlarında kullanılmak üzere üretilmişelektrik donanımı
(73/23/EEC).
Kullanılan standartlar: MG, MMG, Siemens, Teco: EN 60204-1, EN
60034-1 ve EN 60034-5; MMGE: EN 61800-2.
— Elektromanyetik uyumluluk (89/336/EEC).
Kullanılan standartlar: MG, MMG, Siemens, Teco: EN 61000-6-2 ve
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EC (sadece bilgi etiketinde ATEX işareti bulunan ürünlere
uygulanmaktadır).
Kullanılan standartlar: EN 13463-1 ve EN 13463-5. (Motorun uygunluk
beyannamesi ve montaj ve kullanım bilgileri arkaya eklenmiştir.)
ile ilgili olarak Avrupa topluluğu'na Üye Devletlerin yasalarında yer alan
Belediye Yönetmeliklerine uygun oldugunu, tüm sorumluluğu bize ait olmak
üzere beyan ederiz.
Vastavuse deklaratsioon
Meie Grundfos deklareerime enda ainuvastutusel, et toode NB ja NBG,
mille kohta käesolev juhend käib, on vastavuses EL nõukogu Direktiividega
EMÜ liikmesriikide seaduste ühitamise kohta, mis käsitlevad:
— Masinad (98/37/EC).
Kasutatud standardit: EN 809.
— Madalapinge-elektriseadmed (73/23/EEC).
Kasutatud standardit: MG, MMG, Siemens, Teco: EN 60204-1,
EN 60034-1 ja EN 60034-5; MMGE: EN 61800-2.
— Elektrimagnetilist ühilduvust (89/336/EEC).
Kasutatud standardit: MG, MMG, Siemens, Teco: EN 61000-6-2 ja
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EC (ainult toodete korral, mille sildikul on ATEX tähistus).
Kasutatud standardit: EN 13463-1 ja EN 13463-5. (Mootori vastavuse
deklaratsioon ning paigaldus- ja kasutusjuhend on lisatud.)
Atitikties deklaracija
Mes, Grundfos, su visa atsakomybe pareiškiame, kad gaminiai NB ir
NBG, kuriems skirta ši deklaracija, atitinka Tarybos Direktyvas dėl Europos
Ekonominės Bendrijos šaliųnariųįstatymųsuderinimo šiose srityse:
— Mašinos (98/37/EB).
Naudojamas standartas: EN 809.
— Elektriniai prietaisai, skirti naudoti tam tikrose įtampųribose
(73/23/EEB).
Naudojami standartai: Standards used: MG, MMG, Siemens, Teco:
EN 60204-1, EN 60034-1 ir EN 60034-5; MMGE: EN 61800-2.
— Elektromagnetinis suderinamumas (89/336/EEB).
Naudojami standartai: MG, MMG, Siemens, Teco: EN 61000-6-2 ir
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EB (galioja tik produktams, kuriųvardinėje plokštelėje yra
ATEX ženklinimas).
Naudojami standartai: EN 13463-1 ir EN 13463-5. (Variklio atitikties
deklaracija bei įrengimo ir naudojimo instrukcija pridedama.)

5
Paziņojums par atbilstību prasībām
Sabiedrība Grundfos ar pilnu atbildību dara zināmu, ka izstrādājumi
NB un NBG, uz kuriem attiecas šis paziņojums, atbilst šādām Padomes
direktīvām par tuvināšanos EK dalībvalstu likumdošanas normām:
—Mašīnbūve (98/37/EK).
Piemērotais standarts: EN 809.
— Elektriskais aprīkojums, kas paredzēts lietošanai zināmu sprieguma
robežvērtību ietvaros (73/23/EEK).
Piemērotie standarti: Standards used: MG, MMG, Siemens, Teco:
EN 60204-1, EN 60034-1 un EN 60034-5; MMGE: EN 61800-2.
— Elektromagnētiskāsavienojamība (89/336/EEK).
Piemērotie standarti: MG, MMG, Siemens, Teco: EN 61000-6-2 un
EN 61000-6-3; MGE/MMGE: EN 61800-3.
— ATEX 94/9/EK (attiecas tikai uz izstrādājumiem ar ATEX marķējumu
pases datu plāksnītē).
Piemērotie standarti: EN 13463-1 un EN 13463-5. (Ir pievienotas
motora uzstādīšanas un lietošanas instrukcijas un paziņojums par
atbilstību prasībām.)
Свідчення про відповідність вимогам
Ми, фірма Grundfos, із усією відповідальністю заявляємо, що вироби
NB іNBG до яких івідноситься дане свідоцтво відповідають вимогам
наступних указівок Ради ЄЕС про уніфікацію законодавчих
розпоряджень країн-членів ЄЕС:
—Машинобудування (98/37/EC).
Стандарти, що застосовувалися: Євростандарт EN 809.
—Електричні машини для експлуатації вмежах визначеного
діапазону значень напруги (73/23/EEC).
Стандарти, що застосовувалися: MG, MMG, Siemens, Teco:
Євростандарт EN 60204-1, EN 60034-1 іEN 60034-5; MMGE:
EN 61800-2.
—Електромагнітна сумісність (89/336/EEC).
Стандарти, що застосовувалися: MG, MMG, Siemens, Teco:
Євростандарт EN 61000-6-2 i EN 61000-6-3; MGE/MMGE:
EN 61800-3.
— ATEX 94/9/EC (тільки для насосів/продуктів звідміткою ATEX на
заводській табличці зтехнічними даними (шильдіку)).
Стандарти, що застосовувалися: Євростандарт EN 13463-1 і
EN 13463-5. (Декларація відповідності іустановки іопераційних
інструкцій двигуна прикладена.)
Bjerringbro, 1st December 2006
Svend Aage Kaae
Technical Director

6

7
NB, NBG
Installation and operating instructions 8
Montage- und Betriebsanleitung 25
Notice d'installation et d'entretien 43
Istruzioni di installazione e funzionamento 60
Instrucciones de instalación y funcionamiento 77
Instruções de instalação e funcionamento 94
Οδηγίες εγκατάστασης και λειτουργίας 111
Installatie- en bedieningsinstructies 128
Monterings- och driftsinstruktion 145
Asennus- ja käyttöohjeet 162
Monterings- og driftsinstruktion 179
Instrukcja montażu i eksploatacji 196
Руководство по монтажу иэксплуатации 214
Szerelési és üzemeltetési utasítás 233
Navodila za montažo in obratovanje 251
Montažne i pogonske upute 269
Uputstvo za montažu i upotrebu 287
Instrucţiuni de instalare şi utilizare 305
Упътване за монтаж иексплоатация 322
Montážní a provozní návod 340
Návod na montáž a prevádzku 358
Montaj ve kullanım kılavuzu 376
Paigaldus- ja kasutusjuhend 393
Įrengimo ir naudojimo instrukcija 410
Uzstādīšanas un ekspluatācijas instrukcija 427
Інструкції змонтажу та експлуатації 444

8
CONTENTS
Page
1. General information 8
2. Delivery and handling 8
2.1 Delivery 8
2.2 Handling 8
3. Type keys 9
3.1 Type NB 9
3.2 Type NBG 9
3.3 Impeller diameter 11
3.4 Pumped liquids 11
4. Technical data 11
4.1 Ambient temperature 11
4.2 Liquid temperature 11
4.3 Operating pressure 11
4.4 Min. inlet pressure 11
4.5 Maximum inlet pressure 11
4.6 Minimum flow rate 11
4.7 Maximum flow rate 11
4.8 Electrical data 11
4.9 Weight 11
4.10 Sound level 11
4.11 Pump speed relative to material and size 11
5. Pump without motor 12
5.1 Motor without feet 12
5.2 Motor with feet 14
6. Installation 16
6.1 Preparations before installation 16
6.2 Pump location 16
6.3 Connection 16
6.4 Foundation 17
6.5 Vibration dampening 17
6.5.1 Expansion joints 17
6.5.2 Vibration dampers 17
6.6 Direct mounting in pipework 17
6.7 Pipework 18
6.8 Bypass 18
6.9 Measuring instruments 18
7. Flange forces and moments 19
8. Electrical connection 20
8.1 Motor protection 20
8.2 Frequency converter operation 20
9. Start-up 20
9.1 General information 20
9.2 Priming 20
9.3 Checking the direction of rotation 21
9.4 Start-up 21
9.5 Start/stop 21
10. Maintenance 21
10.1 Pump 21
10.2 Mechanical shaft seals 21
10.3 Motor 21
10.4 Lubrication 21
10.4.1 Bearing grease 21
11. Periods of inactivity and frost protection 21
12. Service 21
12.1 Service kits 21
13. Calculation of minimum inlet pressure 22
14. Fault finding chart 23
15. Disposal 24
1. General information
Pump type and model are stated on the pump nameplate.
The pumps are fitted with Grundfos motors, type MG or MMG. If
the pump is fitted with a motor make other than Grundfos, please
note that the motor data may differ from the data stated in this
booklet. This may also influence the pump performance.
2. Delivery and handling
2.1 Delivery
The pumps are tested 100% before leaving the factory. The test
includes a function test where the pump performance is meas-
ured to ensure that the pump meets requirements of relevant
standards. Test certificates are available from Grundfos.
The pumps are delivered from the factory in a carton with a
wooden bottom designed for transport by equipment such as a
forklift truck.
Pump motors as from 4 kW are supplied with lifting eyes.
2.2 Handling
Pumps fitted with motors should be lifted by means of nylon
straps and shackles, if required. See fig. 1.
Fig. 1 Correct lifting of pump
Fig. 2 Incorrect lifting of pump
Prior to installation, read these installation and oper-
ating instructions. Installation and operation must
comply with local regulations and accepted codes of
good practice.
Pump motors as from 4 kW are supplied with lifting
eyes which must not be used for lifting the entire
pump unit. See fig. 2.
TM03 3973 1306TM03 3972 1306

9
3. Type keys
3.1 Type NB
* Examples of combined pump version codes:
AE = Basic version with certificate or test report.
BD = With oversize motor and pump housing with feet.
CE = Without motor and with certificate and test report.
Fig. 3 Example of nameplate for NB
The example shows an NB 80-200 with 196 mm impeller, made of
cast iron with BAQE shaft seal and a 4-pole motor.
3.2 Type NBG
Fig. 4 Example of nameplate for NBG
The example shows an NBG 125-80-200 with 196 mm impeller,
made of cast iron with BAQE shaft seal and a 4-pole motor.
NB 32 -125 .1 /142 A -F -A -BAQE
Type range
NB
NBE
Nominal diameter of discharge
port (DN)
Nominal impeller diameter [mm]
Reduced performance = .1
Actual impeller diameter [mm]
Code for pump version (the codes can be combined*)
A = Basic version
B = Oversize or double-oversize motor
C = Without motor
D = Pump housing with feet
E = With ATEX approval, certificate or test report
X = Special version
Code for pipe connection:
F = DIN flange
Code for materials:
A = Cast iron EN-GJL-250
B = EN-GJL-250 with bronze impeller CuSn10
S = EN-GJL-250 with 1.4408 impeller
N = 1.4408 pump housing and impeller, PTFE wear ring
R = 1.4517 pump housing and impeller, PTFE wear ring
P = 1.4408 pump housing, 1.4517 impeller, PTFE wear ring
K = 1.4408 pump housing and impeller, 1.4517 wear ring
L = 1.4517 pump housing, impeller and wear ring
M = 1.4408 pump housing, 1.4517 impeller and wear ring
X = Special version
Code for shaft seal and rubber pump parts
TM03 4243 1906
bar/°CMAX
m /h
3H
Q
p/t
mnmin-1
Model
96145329
Type
NB 80-200/196 A-F-A-BAQE
A 96125133 P2 0612 0001
91.2 10.8 1445
16/120
Made in Hungary
NBG 50 -32 -125 .1 /142 A -F -A -BAQE
Type range
NBG
NBGE
Nominal diameter of suc-
tion port (DN)
Nominal diameter of discharge
port (DN)
Nominal impeller diameter [mm]
Reduced performance = .1
Actual impeller diameter [mm]
Code for pump version (the codes can be combined)
A = Basic version
B = Oversize or double-oversize motor
C = Without motor
D = Pump housing with feet
E = With ATEX approval, certificate or test report
X = Special version
Code for pipe connection:
F = DIN flange
E = Table E flange
Code for materials:
A = Cast iron EN-GJL-250
B = EN-GJL-250 with bronze impeller CuSn10
S = EN-GJL-250 with 1.4408 impeller
N = 1.4408 pump housing and impeller, PTFE wear ring
R = 1.4517 pump housing and impeller, PTFE wear ring
P = 1.4408 pump housing, 1.4517 impeller, PTFE wear ring
K = 1.4408 pump housing and impeller, 1.4517 wear ring
L = 1.4517 pump housing, impeller and wear ring
M = 1.4408 pump housing, 1.4517 impeller and wear ring
X = Special version
Code for shaft seal and rubber pump parts
TM03 3981 1406
bar/°CMAX
m /h
3H
Q
p/t
mnmin-1
Model
96145329
Type
NBG 125-80-200/196 A-F-A-BAQE
A 96125133 P2 0612 0001
91.2 10.8 1445
16/120
Made in Hungary

10
Mechanical shaft seal
* –25°C to 60°C
Shaft seal diameter [mm] 28, 38 48 55 60
Code Temperature
range Maximum pressure [bar]
Rubber bellows seal, metal-impregnated carbon/silicon carbide,
EPDM BAQE 0°C to +120°C 16 16 16 16
Rubber bellows seal, metal-impregnated carbon/silicon carbide,
FKM BAQV 0°C to +90°C 16 16 16 16
Rubber bellows seal, silicon carbide/silicon carbide, EPDM BQQE 0°C to +90°C 16 16 16 16
Rubber bellows seal, silicon carbide/silicon carbide, FKM BQQV 0°C to +90°C 16 16 16 16
Bellow seal, type B, with reduced seal faces, silicon carbide/
silicon carbide, EPDM GQQE –25°C to +90°C 16 16* 16* 16*
Bellow seal, type B, with reduced seal faces, silicon carbide/
silicon carbide, FKM GQQV –20°C to +90°C 16 16* 16* 16*
O-ring seal with fixed seal driver, silicon carbide/silicon carbide,
EPDM AQQE 0°C to +90°C 25 25 16 16
O-ring seal with fixed seal driver, silicon carbide/silicon carbide,
FKM AQQV 0°C to +90°C 25 25 16 16
O-ring seal with fixed seal driver, silicon carbide/metal-impregnated
carbon, EPDM AQAE 0°C to +120°C 25 25 25 25
O-ring seal with fixed seal driver, silicon carbide/metal-impregnated
carbon, FKM AQAV 0°C to +90°C 25 25 25 25
Rubber bellows seal, silicon carbide/synthetic resin-impregnated
carbon, EPDM BQBE 0°C to +140°C 16 - - -
O-ring seal, balanced, metal-impregnated carbon/silicon carbide,
FXM DAQF 0°C to +140°C 25 25 25 25
Rubber bellows seal, synthetic resin-impregnated carbon/silicon
carbide, EPDM BBQE 0°C to +120°C 16 16 16 16

11
3.3 Impeller diameter
At the customer’s request, the impeller diameter may have been
changed to allow the pump to match a specified duty point. This
means that the actual impeller diameter differs from the standard
diameters stated in sales catalogues, data sheets, etc.
The actual impeller diameter can be found on the pump name-
plate.
3.4 Pumped liquids
Clean, thin, non-explosive liquids without solid particles or fibres.
The pumped liquid must not attack the pump materials chemi-
cally.
When pumping liquids with a density and/or viscosity higher than
that of water, motors with correspondingly higher outputs must be
used, if required.
O-rings and the mechanical shaft seal chosen must be suitable
for the liquid to be pumped.
Special shaft seals may be required if the pump is used for pump-
ing treated water at temperatures above 80°C containing addi-
tives to prevent system corrosion, calcareous deposits, etc., for
instance in heating and ventilating systems.
Another type of shaft seal may also be required for the pumping
of glycol-containing liquids.
For heating systems, the water quality should meet VDI 2035.
Contact Grundfos for further information.
4. Technical data
4.1 Ambient temperature
The ambient temperature and the installation altitude are impor-
tant factors for the motor life, as they affect the life of the bearings
and insulation system.
Maximum ambient temperature:
• EFF2 motors: +40°C.
• EFF1 motors: +60°C.
If the ambient temperature exceeds +40°C (+60°C), or the motor
is installed more than 1000 m (3500 m) above sea level, the
motor must not be fully loaded due to the low density and conse-
quently low cooling effect of the air. In such cases, it may be nec-
essary to use a motor with a higher output.
Fig. 5 Motor P2 in relation to temperature/altitude
4.2 Liquid temperature
–25°C to +140°C.
The maximum liquid temperature is stated on the pump name-
plate. It depends on the shaft seal chosen.
For pump housing of cast iron EN-GJL-250 local regulations may
not allow liquid temperatures above +120°C.
4.3 Operating pressure
The maximum operating pressure is stated on the nameplate.
NB:
Maximum 1.6 MPa (16 bar).
DN 200: 1 MPa (10 bar).
NBG:
Maximum 1.6 MPa (16 bar).
4.4 Min. inlet pressure
According to the NPSH curve of the pump (see page 477) + a
safety margin of minimum 0.5 m head.
The procedure for the calculation of the minimum inlet pressure is
shown in 13. Calculation of minimum inlet pressure.
4.5 Maximum inlet pressure
The actual inlet pressure + pressure when the pump is running
against a closed valve must always be lower than the maximum
operating pressure.
4.6 Minimum flow rate
The minimum flow rate must be at least 10% of the maximum flow
rate. The flow rate and head are stated on the pump nameplate.
4.7 Maximum flow rate
The maximum flow rate must not exceed the values stated for the
individual pump on page 463, as otherwise there is a risk of for
instance cavitation and overload.
4.8 Electrical data
See the motor nameplate.
4.9 Weight
See label on the packing.
4.10 Sound level
See table on page 461.
The values stated are maximum values, including the upper toler-
ance of 3 dB according to ISO 4871.
4.11 Pump speed relative to material and size
Fig. 6 Maximum permissible speed
For stainless steel pumps (1.4408/1.4517) there is no limit in the
range shown.
TM02 8551 0504
20 25 303540 45 50 55 60 65 70 75 80
50
60
70
80
90
100
[%]
P2
EFF 2
EFF 1
t [°C]
1000 2250 3500 4750 m
TM03 4109 1806
1200 1600 2000 2400 2800 3200 3600 min
-1
200
250
300
350
400
450
500
550
600
650
CuSn10
EN-GJL-200
Ø [mm]

12
5. Pump without motor
5.1 Motor without feet
NB and NBG pumps are available without motor. The pumps are
supplied as complete pumps with a transport bracket protecting
the shaft seal during transport. When you mount the motor, follow
the instructions shown in these drawings.
TM03 3913 1206 TM03 3906 1206
1. Remove the coupling guard and loosen the hexagon socket
head screws in the shaft. 2. Place the pump on the motor.
TM03 3907 1206 TM03 3908 1206
3. Fit and tighten the hexagon head screws. 4. Remove the nut, washer and transport bracket.

13
TM03 3909 1206 TM03 3910 1206
5. Press down the threaded pipe to ensure that the shaft is in
bottom position. 6. Remove the threaded pipe.
TM03 3911 1206 TM03 3912 1206
7. Tighten the hexagon socket head screws in the shaft. 8. Fit the coupling guard.

14
5.2 Motor with feet
NB and NBG pumps are available without motor. The pumps are
supplied as complete pumps with a transport bracket protecting
the shaft seal during transport. When you mount the motor, follow
the instructions shown in these drawings.
TM03 3913 1206 TM03 3905 1206
1. Remove the coupling guard and loosen the hexagon socket
head screws in the shaft. 2. Place the pump at the end of the motor and push the parts together.
TM03 3914 1206 TM03 3915 1206
3. Fit and tighten the hexagon head screws. 4. Remove the nut, washer and transport bracket.

15
TM03 3916 1206 TM03 3917 1206
5. Press down the threaded pipe to ensure that the shaft is in
bottom position. 6. Remove the threaded pipe.
TM03 3918 1206 TM03 3919 1206
7. Tighten the hexagon socket head screws in the shaft. 8. Fit the coupling guard.

16
6. Installation
6.1 Preparations before installation
Note: It is very important to handle the equipment correctly
before installation.
The contractor must inspect the equipment on delivery and make
sure that it is stored in such a way that corrosion and damage are
avoided.
If more than 6 months will pass before the equipment is put into
operation, it should be considered whether a suitable anti-corro-
sive agent should be applied to the internal pump parts.
Ensure
• that the agent used does not affect the rubber parts with which
it comes into contact.
• that the agent can easily be removed.
To prevent water, dust, etc. from entering the pump, all openings
must be kept covered until the pipes are fitted. The cost of dis-
mantling the pump during start-up to remove a foreign object can
be very high.
Mechanical shaft seals are precision components. If the mechan-
ical shaft seal of a recently installed pump fails, this will normally
happen within the first few hours of operation. The main cause of
such failures is improper installation of the shaft seals or the pipe
for barrier fluid and/or mishandling of the pump during installa-
tion.
During transport, the pump must be fastened securely to prevent
excessive vibration and/or damage to the shaft and seal caused
by dropping or striking. The pump must not be lifted by means of
the shaft.
6.2 Pump location
The pump should be sited in a well ventilated, but frost-free loca-
tion.
For inspection and repair, suitable clearances for pump or motor
removal must be allowed.
Vertical installation:
• Pumps fitted with motors up to and including 4 kW require a
300 mm clearance above the motor. See fig. 7.
• Pumps fitted with motors of 5.5 kW and up require at least a
1 metre clearance above the motor to allow the use of lifting
equipment. See fig. 7.
Fig. 7 Clearance above the motor.
Horizontal installation:
• Pumps fitted with motors up to and including 4 kW require a
300 mm clearance behind the motor, fig. 8.
• Pumps fitted with motors of 5.5 kW and up require a 300 mm
clearance behind the motor and at least a 1 metre clearance
above the motor to allow the use of lifting equipment. See
fig. 8.
Fig. 8 Clearance behind the motor
The lifting eye of pump motors of 4 kW and up may only be used
for lifting the pump head (motor, motor stool and impeller). The
lifting eye must not be used for lifting the entire pump.
6.3 Connection
Arrows on the pump housing show the direction of flow of liquid
through the pump.
The pumps can be installed with the motor/pump shaft in all posi-
tions between vertical and horizontal, but the motor must never
fall below the horizontal plane. See fig. 9.
Horizontal motors with feet must always be supported.
Fig. 9 Installation
It is advisable to fit isolating valves on either side of the pump. It
is thus not necessary to drain the system if the pump needs to be
cleaned or repaired.
When pumping hot liquids, care should be taken to
ensure that persons cannot accidentally come into
contact with hot surfaces.
TM03 4128 1706
300 mm 1 m
0.25 - 4 kW 5.5 - 30 kW
TM03 4127 1706TM03 4126 1706
300 mm
0.25 - 4 kW
300 mm
5.5 - 200 kW
1 m
0.25 - 30 kW 0.25 - 200 kW

17
6.4 Foundation
Note: The foundation/installation must be carried out in accord-
ance with the following instructions. Non-compliance may result
in functional faults which will damage the pump components.
Grundfos recommends to install the pump on a concrete founda-
tion which is heavy enough to provide permanent and rigid sup-
port to the entire pump. The foundation must be capable of
absorbing any vibration, normal strain or shock. As a rule of
thumb, the weight of the concrete foundation should be 1.5 times
the weight of the pump. The concrete foundation must have an
absolutely level and even surface.
Place the pump on the foundation and fasten it. See fig. 10.
Fig. 10 Foundation
The foundation length and width should always be 200 mm larger
than the length and width of the pump. See fig. 10.
The mass of the foundation must be at least 1.5 times the total
mass of the pump. The minimum height of the foundation (hf) can
then be calculated:
The density (δ) of concrete is usually taken as 2,200 kg/m³.
In installations where noise-less operation is particularly impor-
tant, a foundation with a mass up to 5 times that of the pump is
recommended. See also 6.5 Vibration dampening.
6.5 Vibration dampening
To prevent vibrations from being transmitted to the building and
pipework, it is recommended to fit expansion joints and vibration
dampers. See fig. 11.
Fig. 11 Vibration dampening
6.5.1 Expansion joints
Expansion joints provide the following functions:
• Absorption of thermal expansion and contraction of pipework
caused by variations in liquid temperature.
• Reduction of mechanical influences in connection with pres-
sure surges in the pipework.
• Isolation of structure-borne noise in the pipework (only rubber
bellows expansion joints).
Note: Expansion joints must not be fitted to make up for inaccu-
racy in the pipework, e.g. centre displacement or misalignment of
flanges.
The expansion joints should be fitted at a minimum distance of
1-1½ x DN diameter from the pump, both on the suction and the
discharge sides. This prevents turbulence in the joints, thus
ensuring optimum suction conditions and minimum pressure drop
on the discharge side.
At high water velocities (> 5 m/s), it is recommended to fit larger
expansion joints matching the pipework.
6.5.2 Vibration dampers
To prevent vibrations from being transmitted to the building, it is
recommended to isolate the pump pedestal from building parts by
means of vibration dampers. The selection of the right vibration
damper requires the following data:
• Forces transmitted through the damper.
• Motor speed. In the case of speed control, this must also be
taken into account.
• Desired dampening in % (recommended value 70%).
The determination of the right damper varies from installation to
installation, and a wrong selection of damper may increase the
vibration level in certain cases. Vibration dampers should there-
fore be sized by the supplier.
If the pump is installed on a pedestal with vibration dampers,
expansion joints must be fitted on both sides of the pump. This is
important to prevent the pump from “hanging” in the flanges.
6.6 Direct mounting in pipework
Pumps fitted with motors up to and including frame size 132 are
suitable for direct mounting in supported pipework. See fig. 12.
Fig. 12 Direct mounting in pipework
This type of installation does not allow the use of expansion
joints. To ensure quiet operation, the pipes should be suspended
from suitable pipe hangers.
TM03 4130 1706TM02 5680 3802
hfmpump 1.5×
LfBfδconcrete
××
----------------------------------------------=
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TM00 6326 3395

18
6.7 Pipework
The pump housing must not be stressed by the pipework.
See 7. Flange forces and moments.
The pipes must be of an adequate size, taking the pump inlet
pressure into consideration.
Install the pipes so that air locks are avoided, especially on the
suction side of the pump. See fig. 13.
Fig. 13 Correct pipework
The pipes should be adequately supported as close to the pump
as possible, both on the suction and the discharge sides. The
pipes should lie true against the pump flanges without being
stressed. Otherwise, the pump may be damaged.
Fig. 14 Fixing points
6.8 Bypass
If there is any danger of the pump running against a closed dis-
charge valve, a minimum liquid flow through the pump should be
ensured by connecting a bypass/a drain to the discharge pipe.
The minimum flow rate must be at least 10% of the maximum flow
rate. The flow rate and head are stated on the pump nameplate.
6.9 Measuring instruments
To ensure continuous monitoring of operation, it is recommended
to install a pressure gauge (on the discharge side) and a mano-
vacuum gauge (on the suction side). The pressure gauge taps
should only be opened for test purposes. The measuring range of
the gauges should be 20% above the maximum pump discharge
pressure.
When measuring with pressure gauges on the pump flanges, it
should be noted that a pressure gauge does not register dynamic
pressure (velocity pressure). On most NB or NBG pumps, the
diameters of the suction and discharge flanges are different
which results in different flow velocities in the two flanges. Conse-
quently, the pressure gauge on the discharge flange will not show
the pressure stated in the technical documentation, but a value
which may be up to 1.5 bar (approx. 15 metres) lower.
To check the motor load, it is recommended to connect an amme-
ter.
TM00 2263 3393TM03 4323 2006
The pump is not allowed to run against a closed
valve as this will cause an increase in temperature/
formation of steam in the pump which may cause
damage to the pump.
Fixing points

19
7. Flange forces and moments
Fig. 15 Flange forces and moments
* ΣF and ΣM are the vector sums of the forces and moments.
If not all loads reach the maximum permissible value, one of
these value may exceed the normal limit. Contact Grundfos for
further information.
TM03 3811 1106
Grey cast iron Diameter
DN
Force [N] Moment [Nm]
Fy Fz Fx ΣF* My Mz Mx ΣM*
Horizontal pump, z-
axis, discharge port
32 298 368 315 578 263 298 385 560
40 350 438 385 683 315 368 455 665
50 473 578 525 910 350 403 490 718
65 595 735 648 1155 385 420 525 770
80 718 875 788 1383 403 455 560 823
100 945 1173 1050 1838 438 508 613 910
125 1120 1383 1243 2170 525 665 735 1068
150 1418 1750 1575 2748 613 718 875 1278
Horizontal pump, x-
axis, suction port
50 525 473 578 910 350 403 490 718
65 648 595 735 1155 385 420 525 770
80 788 718 875 1383 403 455 560 823
100 1050 945 1173 1838 438 508 613 910
125 1243 1120 1383 2170 525 665 735 1068
150 1575 1418 1750 2748 613 718 875 1278
200 2100 1890 2345 3658 805 928 1138 1680
Stainless steel Diameter
DN
Force [N] Moment [Nm]
Fy Fz Fx ΣF* My Mz Mx ΣM*
Horizontal pump, z-
axis, discharge port
32 595 735 630 1155 525 595 770 1120
40 700 875 770 1365 630 735 910 1330
50 945 1155 1050 1820 700 805 980 1435
65 1190 1470 1295 2310 770 840 1050 1540
80 1435 1750 1575 2765 805 910 1120 1645
100 1890 2345 2100 3675 875 1015 1225 1820
125 2240 2765 2485 4340 1050 1330 1470 2135
150 2835 3500 3150 5495 1225 1435 1750 2555
Horizontal pump, x-
axis, suction port
50 1050 945 1155 1820 700 805 980 1435
65 1295 1190 1470 2310 770 840 1050 1540
80 1575 1435 1750 2765 805 910 1120 1645
100 2100 1890 2345 3675 875 1015 1225 1820
125 2485 2240 2765 4340 1050 1330 1470 2135
150 3150 2835 3500 5495 1225 1435 1750 2555
200 4200 3780 4690 7315 1610 1855 2275 3360

20
8. Electrical connection
The electrical connection must be carried out by a qualified elec-
trician in accordance with local regulations.
The operating voltage and frequency are marked on the name-
plate. Make sure that the motor is suitable for the electricity sup-
ply on which it will be used.
The electrical connection should be carried out as shown in the
wiring diagram inside the terminal box cover.
8.1 Motor protection
Three-phase motors must be connected to a motor-protective cir-
cuit breaker.
All three-phase Grundfos MG and MMG motors of 3 kW and up
incorporate a thermistor. See the instructions in the motor termi-
nal box.
Carry out the electrical connection as shown in the diagram
inside the terminal box cover.
8.2 Frequency converter operation
All three-phase motors can be connected to a frequency con-
verter.
Frequency converter operation will often expose the motor insula-
tion system to a heavier load and cause the motor to be more
noisy than usual due to eddy currents caused by voltage peaks.
Large motor driven via a frequency converter will be loaded by
bearing currents.
Check these operating conditions if the pump is driven via a fre-
quency converter:
9. Start-up
Note: Do not start the pump until it has been filled with liquid and
vented.
9.1 General information
9.2 Priming
Closed systems or open systems where the liquid level is
above the pump inlet
1. Close the discharge isolating valve and slowly open the isolat-
ing valve in the suction pipe. Both the pump and the suction
pipe should be completely filled with liquid.
2. Slacken the priming plug in order to vent the pump. Once liq-
uid runs out, tighten the priming plug.
Suction operation with non-return valve
The suction pipe and the pump must be filled with liquid and
vented before the pump is started.
1. Close the discharge isolating valve and slowly open the isolat-
ing valve in the suction pipe.
2. Remove the priming plug (M).
3. Pour liquid through the hole until the suction pipe and the
pump are completely filled with liquid.
4. Fit the priming plug (M).
The suction pipe may be filled and vented via the priming plug.
See fig. 16. Alternatively a priming device with funnel can be
installed before the pump.
Open systems where the liquid level is below the pump inlet
1. If an isolating valve is fitted on the suction side of the pump,
the valve must be fully open.
2. Close the discharge isolating valve and tighten the priming
and drain plugs.
3. Connect a manual venting pump instead of a priming device
(funnel).
4. A slide valve should be installed between the venting pump
and the centrifugal pump in order to protect the venting pump
against excessive pressure.
5. Once the slide valve at the manual venting pump has been
opened, vent the suction pipe using short, rapid pump strokes
until the liquid runs out on the discharge side.
6. Close the valve at the venting pump.
Fig. 16 Drain and priming plug
Before removing the terminal box cover and before
any removal/dismantling of the pump, make sure that
the electricity supply has been switched off.
The pump must be connected to an external mains
switch.
Whenever powered equipment is being used in
explosive surroundings, the rules and regulations
generally or specifically imposed by the relevant
responsible authorities or trade organisations must
be observed.
Before starting any repair work on motors incorporat-
ing a thermal switch or thermistors, it must be
ensured that the motor cannot restart automatically
after cooling.
Operating
conditions Action
2-, 4- and 6-pole
motors, frame
size 280 and up
Check that one of the motor bearings is
electrically isolated. Contact Grundfos.
Noise critical ap-
plications
Fit a dU/dt filter between the motor and the
frequency converter (reduces the voltage
peaks and thus the noise).
Particularly noise
critical applica-
tions Fit a sinusoidal filter.
Cable length
Fit a cable that meets the specifications laid
down by the frequency converter supplier.
(The length of the cable between motor and
frequency converter affects the motor load.)
Supplyvoltageup
to 500 V Check that the motor is suitable for fre- quency converter operation.
Supply voltage
between 500 V
and 690 V
Fit a dU/dt filter between the motor and fre-
quency converter (reduces the voltage
peaks and thus the noise), or check that the
motor has reinforced insulation.
Supply voltage of
690 V and higher Fit a dU/dt filter and check that the motor has reinforced insulation.
When pumping drinking water, the pump should be
flushed through with clean water before start-up in
order to remove any foreign matters such as preserv-
atives, test liquid or grease.
Pay attention to the orientation of the priming hole to
ensure that the escaping water does not cause per-
sonal injury or damage to the motor or other compo-
nents.
In hot-water installations, special attention should be
paid to the risk of personal injury caused by scalding
hot water.
E: Drain plug
M: Priming plug
TM03 3935 1206