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Grundfos CR - User Manual

Grundfos CR
37 pages
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GRUNDFOS INSTRUCTIONS
CR, CRI, CRN, CRT
Installation and operating instructions

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Grundfos CR Specifications

General IconGeneral
Impeller MaterialStainless steel
TypeCentrifugal Pump
Temperature Range+120 °C
MaterialStainless Steel
ApplicationsWater supply, pressure boosting, cooling systems
ConnectionsFlanged

Summary

Limited Warranty

General Information

Hazard Statement Structure

Explains the structure of hazard statements: SIGNAL WORD, Description of hazard, Consequence of ignoring the warning, Action to avoid the hazard.

Receiving the Product

Transporting the Product

Instructions and warnings for transporting the product, emphasizing stability and personal protective equipment.

Receiving the Product

Warnings related to receiving the product, focusing on falling objects and protective equipment during unpacking.

Lifting Instructions

Safety warnings and instructions for lifting the product, including use of approved equipment and maintaining safe distance.

Pump End Without Motor

Identification

Nameplate Data

Details and explanation of the information found on the pump nameplate, including model, specifications, and codes.

Type Keys

Codes

Shaft Seal Information

Operating Conditions

Ambient Temperature and Altitude

Guidance on ambient temperature and altitude limits for pumps, and potential motor derating due to overheating.

Liquid Temperatures

Table showing liquid temperature limits for various CR, CRI, CRN, and CRT pump types, including special cases.

Maximum Inlet Pressures

Maximum Inlet Pressure Table

Table detailing maximum inlet pressures for various CR, CRI, CRN, and CRT pump types and stages, at 60 Hz and 50 Hz.

Maximum Operating Pressures

Maximum Operating Pressure Table

Table specifying maximum operating pressures for CR, CRI, CRN, and CRT pump types and stages.

Mechanical Installation

Drinking Water Contamination Warning

Warning about contamination risk when pumping drinking water, requiring flushing and use of suitable parts.

Lifting the Product

Safety warnings and instructions for lifting the product, including use of approved equipment and maintaining safe distance.

Pump Mounting

Pressurized System Installation Warning

Warning about pressurized systems and the need to remove port covers before connecting pipes.

Inlet Pipe

Outlet Pipe

Bypass

Flange Forces and Torques

Flange Force Limits

Table detailing force limits (Y, Z, X directions) for CR and CRI, CRN pumps with cast iron and stainless steel housings.

Flange Torque Limits

Table showing torque limits (Y, Z, X directions) for CR and CRI, CRN pumps with cast iron and stainless steel housings.

Minimum Continuous Duty Flow Rates [gpm]

Check Valves

Temperature Rise

Electrical Connection

Electrical Work Safety Qualifications

Requirement for qualified electricians and compliance with National Electrical Code and local regulations.

Electrical Connection Safety Warnings

Warnings about electric shock, grounding, verifying power supply, and voltage variations.

Motor Protection

Starting Up the Product

Product Startup Warnings

Warnings for corrosive, toxic, hot, or cold liquids, and caution against running dry to prevent damage.

Priming

Instructions for priming the pump in closed or open systems, including steps and diagrams for plug locations.

Startup Instructions

Pump Startup Procedure

Step-by-step guide for starting the pump, including checks for filling, venting, rotation, and coupling guards.

Operating the Product

Product Operating Warnings

Warnings for contamination, airborne noise, high pressure/leakage, and hot/cold surfaces or liquids.

Pump Cycling

Servicing the Product

Maintaining the Pump

Maintaining the Motor

Motor Lubrication

Replacing the Motor

Motor Replacement Safety Warnings

Safety warnings for motor replacement: electric shock, falling objects, and using correct replacement motors.

Preliminary Electrical Tests

Electrical Test Safety Precautions

Safety precautions for electrical tests, including wearing protective gear and ensuring proper grounding.

Startup of Pump with Air-Cooled Top (Cool-Top)

Diagnosing Specific Problems

Problem 1: Pump Does Not Run

Troubleshooting guide for when the pump does not run, covering possible causes and remedies for power, fuses, motor, and starter issues.

Problem 2: Reduced Performance or No Water

Troubleshooting Reduced Pump Performance

Troubleshooting guide for reduced pump performance, covering rotation, priming, clogs, suction lift, and wear.

Problem 3: Pump Cycles Too Much

Troubleshooting Excessive Pump Cycling

Troubleshooting guide for excessive pump cycling, addressing pressure switches, level controls, air charging, and tank size.

Problem 4: Fuses Blow or Circuit Breakers Trip

Troubleshooting Fuse;Breaker Trips

Troubleshooting guide for blown fuses or tripped breakers, covering tank size, overload settings, imbalance, and wiring.

Worksheet for Three-Phase Motors

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