Grundfos CME Series

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99698874 07.2022

ECM: 1345978

www.grundfos.com

Trademarks displayed in this material, including but not limited to Grundfos and the Grundfos logo, are registered trademarks owned by The Grundfos Group. © 2022 Grundfos Holding A/S, all rights reserved.

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Table of Contents4
General Information4
Hazard Statements4
Notes4
Type Identification5
Nameplate5
Type Key6
Key to Codes6
Tightening Torques and Lubricants8
Service Tools9
Standard Tools9
Torque Tools9
Dismantling and Assembly10
General Information10
CM 1, 3, 5, Cast Iron10
CM 1, 3, 5, Stainless Steel12
CM 10, 15, 25, Cast Iron14
CM 10, 15, 25, Stainless Steel15
MG 71 and MG 80 Motors17
MG 90, MG 100, MG 112 and MG 132 Motors17
Checking and Replacing Impellers and Chambers18
Replacement of Impellers and Spacing Pipes18
Fault Finding19
The Pump Does Not Run19
Motor-Protective Circuit Breaker Has Tripped (Trips out Immediately When Supply Is Switched On)19
The Motor-Protective Circuit Breaker Trips out Occasionally20
The Motor-Protective Circuit Breaker Has Not Tripped Out, but the Pump Is Inadvertently out of Operation21
The Pump Performance Is Unstable21
The Pump Runs, but Gives no Water21
The Pump Runs Backwards When Switched off21
The Pump Runs with Reduced Performance21
Drawings22
Order of Assembly for Chambers and Impellers26
Key for CM 1, 3, 526
CM 1, 3, 5, Cast Iron26
CM 1, 3, 5, Stainless Steel26
Key for CM 10, 15, 2527
CM 10, 15, 25, Cast Iron27
CM 10, 15, 25, Stainless Steel28

Grundfos CME Series - Page 30

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