Grundfos CR Service Instructions

English (GB)
2
English (GB) Service instructions
Original service instructions.
CONTENTS
Page
1. Symbols used in this document
2. General information
Position numbers of parts (digits) refer to drawings and parts
lists; position numbers of tools (letters) refer to section 5. Service
tools.
Electrical parts must only be serviced by Grundfos or an
authorised service workshop.
Before dismantling
• Close the isolating valves, if fitted, and make sure that they
cannot be accidentally opened.
• Before starting work on the product, let the product and
pumped liquid cool off.
Before assembly
• Clean and check all parts.
• Replace defective parts with new parts.
• Order the necessary service kits.
• Always replace gaskets and O-rings.
During assembly
• Tighten screws and nuts according to section 3. Torques.
• Lubricate rings and screws according to section 4. Lubricants.
After assembly
If analog or digital inputs, the relay output or the CIM module has
been removed from the pump, you must check the
communication with external units after service.
1. Symbols used in this document
2
2. General information
2
3. Torques
3
4. Lubricants
3
5. Service tools
4
6. CR, CRI, CRN 1, 3, 5
5
6.1 Dismantling
5
6.2 Assembly
5
7. CR, CRI, CRN 10, 15, 20
6
7.1 Dismantling
6
7.2 Assembly
6
8. CR, CRI, CRN 32, 45, 64, 90
7
8.1 Dismantling
7
8.2 Assembly
7
9. CR, CRN 120, 150
8
9.1 Dismantling
8
9.2 Assembly
8
10. Exploded views
10
Warning
Prior to service work, read these service
instructions carefully. Installation and service
work must comply with local regulations and
accepted codes of good practice.
Observe the safety instructions in the installation
and operating instructions for the product.
Warning
If these safety instructions are not observed,
it may result in personal injury.
Warning
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
Caution
If these safety instructions are not observed,
it may result in malfunction or damage to the
equipment.
Note
Notes or instructions that make the job easier
and ensure safe operation.
Warning
Use personal protective equipment if there is a
risk of getting into contact with the pumped
liquid.
Observe local regulations.
Warning
Switch off the power supply and make sure that it
cannot be accidentally switched on.
Check that other pumps or sources do not force
flow through the pump even if the pump is
stopped. This will cause the motor to act like a
generator, resulting in voltage on the pump.

Grundfos CR Specifications

General

Brand	Grundfos
Model	CR
Category	Water Pump
Language	English