Grundfos CR Installation And Operating Instructions Manual
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Grundfos CR Installation And Operating Instructions Manual

Centrifugal pump
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GRUNDFOS INSTRUCTIONS
CR, CRI, CRN, CRT
Installation and operating instructions

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Summary of Contents for Grundfos CR

  • Page 1 GRUNDFOS INSTRUCTIONS CR, CRI, CRN, CRT Installation and operating instructions...
  • Page 2 CR, CRI, CRN, CRT English (US) Installation and operating instructions............3 Français (CA)

  • Page 3: Table Of Contents

    1. Limited warranty Identification Products manufactured by Grundfos Pumps Corporation Nameplate data (Grundfos) are warranted to the original user only to be free of Type keys defects in material and workmanship for a period of 24 months Applications from date of installation, but not more than 30 months from date Operating conditions of manufacture.

  • Page 4: General Information

    Consequence of ignoring the warning. - Action to avoid the hazard. 3. Introduction The CR range is based on the inline multistage centrifugal pump first pioneered by Grundfos. CR is available in four basic materials and over one million configurations. CR is suitable for...

  • Page 5: Receiving The Product

    - Keep the product in a stable and fixed position • CR: Centrifugal pump; all parts in contact with the pumped during unpacking. liquid are made of standard cast iron and AISI 304 stainless - Wear personal protective equipment.

  • Page 6: Pump End Without Motor

    DK-8850 Bjerringbro, Denmark 15. Replacing Ver-PN-SN motor. Pump without motor (CR, CRI, CRN 1s, 1, 3, 5, 10, 15, and 20 only) If you purchased a pump end without motor, the shaft seal has hp [P2] been set from factory. Do not loosen the three set screws on the H /Hmax shaft seal when attaching the motor.

  • Page 7: Type Keys

    5.2 Type keys 5.2.1 CR, CRI, CRN 1s, 1, 3, 5, 10, 15, and 20 Example CR 3- 10 A FG A E HQQE Type range: CR, CRI, CRN Rated flow rate in [m /h] (x 5 gpm) Number of impellers...
  • Page 8 5.2.4 Codes Example Pump version Basic version Oversize motor Certificate/approval CR pump for high temperatures (air-cooled top assembly) Horizontal version High-pressure pump with high-speed MLE motor Different pressure rating Pump with different max. speed Pump with low NPSH Magnetic drive...
  • Page 9 EPDM FFKM In August 2003 the NEMA version pump code was discontinued for all material numbers created by Grundfos manufacturing companies in North America. The NEMA version pump code will still remain in effect for existing material numbers. NEMA version pumps built in North America after this change will have either an A or a U as the pump version code depending on the date the material number was created.

  • Page 10: Applications

    Liquid temperature with the application in which you plan to install it. Make sure the application falls within the following limits. -4 to +248 °F CR, CRI, CRN 1s, 3, 5, 10, 15, and 20 (-20 to +120 °C) Type Application/liquid -22 to +248 °F...

  • Page 11: Maximum Inlet Pressures

    232 (16) FGJ, PJE 1-27 1-36 362 (25) 10-12 10-16 362 (25) CR, CRI, CRN 1 Consult Grundfos in case of other operating conditions. Oval flange 1-17 1-23 232 (16) FGJ, PJE 1-27 1-36 362 (25) CR, CRI, CRN 3...

  • Page 12: Mechanical Installation

    8.3 Outside installation Grundfos recommends that pumps installed outside have rain cover for the motor and remove, at a minimum, one of the motor drain plugs. Failure to remove a motor drain plug will result in condensation in the motor and cause motor damage or failure.
  • Page 13 [inches] [mm] [inches] [mm] [inches] [mm] [inches] [mm] [inches] [mm] CR 1s, 1, 3, 5 3 15/16 5 11/16 7 1/16 8 11/16 CRI, CRN 1s 1, 3, 5 3 15/16 5 7/8 7 1/16 8 11/16 CRT 2, 4...

  • Page 14: Pump Mounting

    8.6.1 Inlet pipe sizes The following recommended inlet pipe sizes are the smallest WARNING sizes which should be used with any specific CR pump type. Verify the inlet pipe size in each installation to ensure that good Pressurised system pipe practices are being observed and excess friction losses are Death or serious personal injury not encountered.

  • Page 15: Bypass

    Elbows should be at least 12" from the bypass opening to prevent erosion. Bypass line Inlet Outlet Fig. 7 Recommended bypass arrangement Bypass opening Bypass line Inlet Outlet Fig. 8 Optional bypass arrangement Bypass opening Bypass line Outlet Inlet Fig. 9 Optional bypass arrangement for CR, CRN 32, 45 and...

  • Page 16: Flange Forces And Torques

    8.9 Flange forces and torques If not all loads reach the maximum permissible value stated in the tables after fig. 10, one of these values may exceed the normal limit. Contact Grundfos for further information. Y-direction: Inlet/outlet Z-direction: Direction of chamber stack X-direction: 90 °...

  • Page 17: Minimum Continuous Duty Flow Rates [Gpm]

    248 °F at 356 °F Pump type (min. °C to 80 °C) (at 99 °C) (at 120 °C) (at 180 °C) CR, CRI, CRN 1s 1.2* CR, CRI, CRN 1 2.3* CR, CRI, CRN 3 4.0* CR, CRI, CRN 5 7.5*...

  • Page 18: Temperature Rise

    Pump type terminal. Seconds Minutes - Connect the ground conductor to the grounding CR 1s, 1, 3 screw in the terminal box and then to the ACCEPTABLE grounding point. CR 5 - In all installations, connect the above-ground metal plumbing to the power supply ground terminal as...

  • Page 19: Motors

    9.4.1 Single-phase motors rpm), ODP (open drip-proof) or TEFC (totally enclosed fan All CR pumps with single phase motors, except 10 HP, are cooled), NEMA C frame motors selected to our rigid equipped with multi-voltage, squirrel cage induction motors which specifications.

  • Page 20: Starting Up The Product

    - Make sure that no persons are hurt by the escaping liquid. Fig. 14 Position of plugs CR, CRN 32, 45, 64 Fill the pump with liquid and vent it before you start Loosen center plug the pump.

  • Page 21: Startup Instructions

    See fig. 15. Never let the pump run dry. - Wear personal protective equipment. For CR, CRI, CRN 1s to 5 it is advisable to open the bypass valve during start-up. See fig. 13. The bypass 11.1 Operating parameters valve connects the inlet and outlet sides of the pump, thus making the filling procedure easier.

  • Page 22: Pump Cycling

    - Persons must keep a safe distance to the product If you request Grundfos to service the product, contact Grundfos during lifting operations. with details about the liquid before returning the product for - Wear personal protective equipment.

  • Page 23: Maintaining The Pump

    13. Maintaining the pump 14. Maintaining the motor DANGER DANGER Electric shock Electric shock Death or serious personal injury Death or serious personal injury - Before starting any work on the product, make - Before starting any work on the product, make sure that the power supply has been switched off sure that the power supply has been switched off and that it cannot be accidentally switched on.

  • Page 24: Motor Lubrication

    Environment Approved types of grease Standard 104 °F (40 °C) Clean, little corrosion Grundfos ML motors are greased for life, Severe 122 °F (50 °C) Moderate dirt, corrosion or the grease type will be stated on the nameplate. WEG motors are greased >...

  • Page 25: Replacing The Motor

    1. Disconnect the power supply leads from the motor. Remove the coupling guards. CORRECT For CR 1s, 1, 3, 5, 10, 15, and 20: Do not loosen the TOP View three hexagon socket head cap screws securing the shaft seal.
  • Page 26 M8 - 31 Nm M10 - 62 Nm Fig. 19 Coupling adjustment CR, CRN 32, 45 and 64 3. Fit the coupling on the shaft so that the top of the pump shaft is flush with the bottom of the coupling chamber. See fig. 20.

  • Page 27: Parts List

    Fig. 23 Prepacked flange kits switched on again. 16.1 Spare parts Grundfos offers an extensive list of spare parts for CR pumps. For a current list of these parts, see Grundfos All Product Spare Parts/Service Kits Price List, part number L-SK-SL-002.

  • Page 28: Preliminary Electrical Tests

    17. Preliminary electrical tests 17.2.2 Meaning of current measurement If the amp draw exceeds the listed service factor amps (SFA) or if DANGER the current unbalance is greater than 5 % between each leg on three-phase units, check for the following faults: Electric shock Death or serious personal injury Fault...

  • Page 29: Startup Of Pump With Air-Cooled Top (Cool-Top ® )

    ® Startup of pump with air-cooled top ( Cool-Top Do not start the pump until it has been filled with liquid and vented. CAUTION Hot or cold liquid Minor or moderate personal injury - Wear personal protective equipment. - Pay attention to the direction of the vent hole when you fill the pump with liquid and vent it.

  • Page 30: Diagnosing Specific Problems

    19. Diagnosing specific problems DANGER Electric shock Death or serious personal injury - Before starting any work on the product, make sure that the power supply has been switched off and that it cannot be accidentally switched on. Problem Possible cause Remedy 1.
  • Page 31 Problem Possible cause Remedy 2. The pump runs but at a) Wrong direction of rotation. Check wiring for proper connections. Correct reduced performance or wiring. does not deliver water. b) Pump is not primed or is air-bound. Turn pump off, close isolation valve(s) and remove priming plug.
  • Page 32 Problem Possible cause Remedy 4. Fuses blow or circuit a) Tank is too small. Check voltage at starter panel and motor. If breakers or overload voltage varies more than - 10 %/+ 10 %, contact relays trip power company. Check wire sizing. b) Motor overload protection set too low.

  • Page 33: Worksheet For Three-Phase Motors

    20. Worksheet for three-phase motors Below is a worksheet for calculating current unbalance on a three-phase hookup. Use the calculations below as a guide. Current unbalance should not exceed 5 % at service factor load or 10 % at rated input load. If the unbalance cannot be corrected by rolling the leads, the source of the unbalance must be located and corrected.

  • Page 34: Disposal

    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 36 Grundfos Kansas City Grundfos Canada Grundfos México 9300 Loiret Blvd. 2941 Brighton Road Boulevard TLC No. 15 Lenexa, Kansas 66219 Oakville, Ontario L6H 6C9 Canada Parque Industrial Stiva Aeropuerto Phone: +1-913-227-3400 Phone: +1-905 829 9533 C.P. 66600 Apodaca, N.L. Mexico...
  • Page 37 L-CR-TL-001 98419736 04.2021 ECM: 1311425 www.grundfos.com www.grundfos.us...

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