Grundfos CR Installation And Operating Instruction Manual
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Table of Contents
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Table of Contents
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Summary of Contents for Grundfos CR
- Page 1 GRUNDFOS INSTRUCTIONS CR, CRI, CRN, CRT Installation and operating instructions...
- Page 2 Grundfos or an authorized service station for instructions. Any defective product to be returned to Grundfos or a service station must be sent freight prepaid; documentation supporting the warranty claim and/or a Return Material Authorization must be included if so instructed.
- Page 3 CR, CRI, CRN, CRT Installation and operating instructions Notice d'installation et de fonctionnement Instrucciones de instalación y funcionamiento...
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Page 5: Table Of Contents
Pump without Motor (CR(I)(N) 1s, 1, 3, 5, 10, 15, and 20 Only): water. For this reason, proper grounding of the If you purchased a pump without a motor, the shaft seal has been pump to the power supply’s grounding terminal... -
Page 6: Understanding Nameplate Data
3. Understanding nameplate data 1. Type designation 2. Model, material Type key number, production CR, CRI, CRN 1s, 1, 3, 5, 10, 15, and 20 number Example 3. Head in feet at Type range: CR 3 -10 A FG A... -
Page 7: Understanding Codes
Base plate and flange of 304 SS X also indicates special pump versions not listed above. Bronze (bearings) SiC bearing ring + PTFE neck ring (only CR, CRN 32 to 90 Titanium Special version Code for rubber parts EPDM FXM (Flouraz®) FFKM (Kalrez®) -
Page 8: Confirming Proper Application
116 / 8 –4 to +248 °F 4 to 17 2 to 10 145 / 10 CR(I)(N) 1s, 3, 5, 10, 15, and 20 (–20 to +120 °C) CR, CRN 32 1-1 to 4 1-1 to 2 58 / 4 –22 to +248 °F... - Page 9 232 / 16 CRT 8 14 to 20 10 to 16 362 / 25 1 to 8 1 to 8 232 / 16 CRT 16 10 to 16 10 to 12 362 / 25 Consult Grundfos for other working conditions.
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Page 10: Installing The Pump
(uneven surfaces can result in pump replaced. base breakage when mounting bolts are tightened). 4 x ø ø Pump type CR 1s, 1, 3, 5 3 15/16 5 11/16 7 1/16 8 11/16 CRI, CRN 1s 1, 3, 5... -
Page 11: Pump Mounting
The following recommended suction pipe sizes are the smallest Warning sizes which should be used with any specific CR pump type. CR, CRI, CRN pumps are shipped with covered The suction pipe size should be verified with each installation to suction and discharge. - Page 12 10, one of discharge line. Flow through the pump is required to ensure these values may exceed the normal limit. Contact Grundfos for adequate cooling and lubrication of the pump is maintained. See further information.
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Page 13: Check Valves
110* CR, CRN 120 CR, CRN 150 CRT 2 CRT 4 CRT 8 CRT 16 * Grundfos Cool-Top® is only available in the following pump types. Pump Type CR 1s CR 1 CR 3 CR 5 CR 10 CR 15... -
Page 14: Electrical
6.17.2 Three-Phase Motors the ACCEPTABLE grounding point. All electrical CR pumps with three-phase motors must be used with the proper work should be performed by a qualified size and type of motor-starter to ensure the motor is protected... - Page 15 Replace the coupling guard if the rotation is correct. After guards are in place the power can be reapplied. Note: CR, CRI, CRN 1s to 5: For these pumps, it is advisable to open the bypass valve during start-up; see fig. 13. The bypass valve connects the suction and discharge sides of the pump, thus making the filling procedure easier.
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Page 16: Preventative Pump Maintenance
Ambient temp. (max.) Environment Approved types of grease Standard +104 °F (+40 °C) Clean, little corrosion Grundfos ML motors are greased for life or will have the grease type Severe +122 °F (+50 °C) Moderate dirt, corrosion on the nameplate. Baldor motors >122 °F (+50°C) -
Page 17: Lubrication Procedure
For an extremely dirty can now be safely disconnected from the motor wires. environment, contact Grundfos, the motor Remove the coupling guards. Note: CR 1s, 1, 3, 5, 10, 15, and Caution manufacturer, or an authorized service center for 20: do not loosen the three shaft seal securing allen screws. - Page 18 10.2.1 Torque specifications for CR 1s, 1, 3, and 5 Note: The shaft can only be raised approximately 0.20 in (5mm). Insert shaft pin into shaft hole. Reinstall the coupling halves onto Now lower the shaft halfway back down the distance you just shaft and shaft pin.
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Page 19: Parts List
11. Parts List lubricating compound. Tighten the coupling screws (finger For each CR pump model Grundfos offers an extensive Parts List tight) while keeping the coupling separation equal on both and diagram of part used in that pump and is recommended to sides and the motor shaft keyway centered in the coupling half have on hand for future maintenance. -
Page 20: Preliminary Electrical Tests
13. Preliminary electrical tests Warning When working with electrical circuits, use caution to avoid electrical shock. It is recommended that rubber gloves and boots be worn, and metal terminal boxes and motors are grounded before any work is done. For your protection, always disconnect the pump from its power source before handling. -
Page 21: Startup For Cool-Top
14. Startup for Cool-Top® Do not start the pump until it has been filled with liquid and vented. Caution Warning Pay attention to the direction of the vent hole and take care to ensure that the escaping liquid does not cause injury to persons or damage to the motor or other components. -
Page 22: Diagnosing Specific Problems
15. Diagnosing specific problems Problem Possible cause Remedy Check voltage at motor terminal box. If no voltage at motor, check The pump does not run. No power at motor. feeder panel for tripped circuits and reset circuit. Turn off power and remove fuses. Check for continuity with Fuses are blown or circuit ohmmeter. - Page 23 Problem Possible cause Remedy Pressure switch is not Check pressure setting on switch and operation. Check voltage Pump cycles too much properly adjusted or is across closed contacts. Readjust switch or replace if defective. defective. Level control is not properly Check setting and operation.
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Page 24: Worksheet For Three-Phase Motors
16. Worksheet for three-phase motors farthest from the average stays on the same power lead, most of the unbalance is coming from the power source. However, if the Below is a worksheet for calculating current unbalance on a reading farthest from the averages moves with the same motor three-phase hookup. - Page 25 U.S.A. Canada México GRUNDFOS Pumps Corporation GRUNDFOS Canada Inc. Bombas GRUNDFOS de México S.A. de C.V. 17100 West 118th Terrace 2941 Brighton Road Boulevard TLC No. 15 Olathe, Kansas 66061 Oakville, Ontario Parque Industrial Stiva Phone: +1-913-227-3400 L6H 6C9 Aeropuerto...
- Page 28 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence L-CR-TL-001 0309 Repl. L-CP-TL-003 1205 www.grundfos.com...
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