Table Of Contents; General Information; Hazard Statements; Notes - Grundfos CR 95 Service Instructions Manual

English (GB) Service instructions
Original service instructions

Table of contents

1. General information . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Hazard statements . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Contaminated products . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Servicing the motor . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. Preparing the dismantling of the product . . . . . . . . . . 5
2.1 Lifting the product . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. Dismantling and assembling the product . . . . . . . . . . 6
3.1 Motor and coupling . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Shaft seal, motor stool, pump head cover, sleeve and
chamber stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.3 Thrust-handling device . . . . . . . . . . . . . . . . . . . . . . 10
4. Renewing thrust-handling-device wear parts . . . . . . . 12
4.1 Chamber stack . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5. Renewing chamber wear parts . . . . . . . . . . . . . . . . 16
5.1 Neck ring (45). . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Bush (47c) and retaining ring (47d) . . . . . . . . . . . . . . . 18
6. Renewing shaft seal wear parts . . . . . . . . . . . . . . . 18
6.1 Dismantling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7. Additional information . . . . . . . . . . . . . . . . . . . . . 20
7.1 Torques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2 Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3 Special service tools. . . . . . . . . . . . . . . . . . . . . . . . 21
7.4 Order of assembly for chambers and impellers. . . . . . . . 23
7.5 Drawings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8. Document quality feedback . . . . . . . . . . . . . . . . . . 30
4

1. General information

Read this document before you install the product.
Installation and operation must comply with local
regulations and accepted codes of good practice.

1.1 Hazard statements

The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.

1.2 Notes

The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.