Grundfos CRT Series Installation And Operating Instructions Manual
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Grundfos CRT Series Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
CRT
Installation and operating instructions

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  • Page 1 GRUNDFOS INSTRUCTIONS Installation and operating instructions...

  • Page 2: Table Of Contents

    English (GB) Installation and operating instructions 1. Symbols used in this document Original installation and operating instructions CONTENTS Warning Page If these safety instructions are not observed, it may result in personal injury. Symbols used in this document Handling Warning Type designation If these instructions are not observed, it may lead to Type key...

  • Page 3: Applications

    4. Applications 5.2 Maximum operating pressure and temperature limits Grundfos multistage in-line centrifugal pumps, type CRT, are designed for a wide range of applications. Reliable and cost- Maximum operating pressure: 25 bar. efficient, CRT pumps handle a variety of liquids from seawater to Temperature range: -20 to +120 °C.

  • Page 4: Maximum Operating Pressure

    5.4 Maximum operating pressure Step Action Fig. B on page shows the maximum inlet pressure. However, The pump can be installed the actual inlet pressure + maximum pump pressure (at no flow) vertically or horizontally. must always be lower than the values stated in Appendix on page However, the motor must...

  • Page 5: Foundation

    Non-compliance may result in functional faults which will damage the pump components. Grundfos recommends to install the pump on a concrete foundation which is heavy enough to provide permanent and rigid support to the entire pump. The foundation must be capable of absorbing any vibration, normal strain or shock.

  • Page 6: Vibration Dampening

    If not all loads reach the maximum value stated in the tables foundation. below, one of these value may exceed the normal limit. Contact Grundfos for further information. Vibration dampers Fig. 10 Pump on vibration dampers Fig. 12 Flange forces and torques 6.3 Outdoor installation...

  • Page 7: Electrical Connection

    7. Electrical connection 7.2 Three-phase connection The electrical connection should be carried out by an authorised Mains supply [V] electrician in accordance with local regulations. Delta connection Star connection Warning The CR pump must be connected to an external 220-240 380-415 50 Hz mains switch placed close to the pump and to a...

  • Page 8: Single-Phase Connection

    Only motors with a rated voltage equal to or above 460 V have phase insulation. Grundfos motors, types MG 71 and MG 80, for supply voltages up to and including 440 V without phase insulation (see motor nameplate) must be...

  • Page 9: Startup

    8. Startup Step Action Do not start the pump until it has been filled with liquid and vented. If the pump runs dry, the pump Caution bearings and the shaft seal may be damaged. Close the vent valve when a steady stream of liquid runs out Warning of it.

  • Page 10: Maintenance

    If Grundfos is requested to service the pump, Grundfos must be contacted with details about the pumped liquid, etc. before the pump is returned for service. Otherwise, Grundfos can refuse to accept the pump for service.

  • Page 11: Fault Finding

    This product or parts of it must be disposed of in an environmentally sound way: 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. The crossed-out wheelie bin symbol on a product means that it must be disposed of separately from household waste.
  • Page 12 Appendix Fig. A GB Maximum permissible operating pressure: DK Maks. tilladeligt driftstryk: Max. zulässiger Betriebsdruck: GR Μέγιστη επιτρεπτή πίεση λειτουργίας: Presión máxima de funcionamiento permitida: Pression de fonctionnement maxi autorisée: Massima pressione di esercizio possibile: Maximaal toelaatbare werkdruk: Pressão máxima de funcionamento permissível: RU Максимально...
  • Page 13 Fig. B GB Maximum inlet pressure: DK Maks. tilløbstryk: Max. Zulaufdruck: GR Μέγιστη πίεση εισόδου για: Presión máxima de entrada: Pression maximum d'entrée: Massima pressione in aspirazione: Maximale inlaatdruk: Pressão máxima de admissão: RU Максимально допустимый подпор: RO Presiune maximă de aspiraţie: Suurin tulopaine: Max.
  • Page 14 DK Luftbåren støj fra pumper med motorer monteret af Grundfos: Luftschallemission von Pumpen mit Motoren, die von Grundfos montiert sind: GR Θόρυβος που εκπέμπεται στον αέρα από αντλίες εφοδιασμένες με κινητήρες από τη Grundfos: Nivel de ruido producido por bombas con motores montados por Grundfos: Bruit aérien émis par les pompes avec moteurs montés par Grundfos:...
  • Page 15 NPSH CRT 2 CR 2, CRN 2 [kPa] 60 Hz 50 Hz Q [m³/h] Q [l/s] CRT 4 CR 4, CRN 4 [kPa] 60 Hz 50 Hz Q [m³/h] 2.4 Q [l/s] CRT 8 [kPa] CR 8, CRN 8 60 Hz 50 Hz 10 11 12 13 Q [m³/h]...
  • Page 16 Appendix 1. 中国 RoHS...
  • Page 17 GB: EC/EU declaration of conformity DK: EF/EU-overensstemmelseserklæring We, Grundfos, declare under our sole responsibility that the products CR, Vi, Grundfos, erklærer under ansvar at produkterne CR, CRI, CRN, CRT CRI, CRN, CRT, to which the declaration below relates, are in conformity som erklæringen nedenfor omhandler, er i overensstemmelse med...
  • Page 19 GRUNDFOS Pumps (Hong Kong) Ltd. Turkey Norway BOMBAS GRUNDFOS DO BRASIL Unit 1, Ground floor GRUNDFOS POMPA San. ve Tic. Ltd. Sti. Av. Humberto de Alencar Castelo Branco, Siu Wai Industrial Centre GRUNDFOS Pumper A/S Gebze Organize Sanayi Bölgesi 29-33 Wing Hong Street &...
  • Page 20 400599 1019 ECM: 1268382 www.grundfos.com...

This manual is also suitable for:

Crt 2Crt 4Crt 8Crt 16

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