Table Of Contents; General Information; Hazard Statements; Notes - Grundfos CUE Series Service Instructions Manual

English (GB) Service instructions
Original service instructions
CONTENTS
1. General information
1.1 Hazard statements
1.2 Notes
1.3 About the service instructions
1.4 Waiting time during power off
2. Type identification
2.1 Nameplate
2.2 Enclosures
2.3 Schematic diagram
2.4 Terminals
3. Fault finding
3.1 Safety regulations
3.2 Fault finding procedure
3.3 Operating conditions
3.4 Fault finding using alarm and warning codes
4. Checking the mains components
4.1 Checking the rectifier, static test
4.2 Checking the IGBTs, static test
4.3 Checking the IGBTs, dynamic test
4.4 Checking the intermediate voltage
4.5 Checking the current sensor
4.6 Setting the type code
4.7 Fault finding using PC Tool E-Products
5. Upgrading the firmware
6. Additional information
6.1 Special service tools
6.2 Tightening torques
Read this document before starting service work on
the product. 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.
2

1. General information

1.1 Hazard statements

The symbols and hazard statements below may appear in
Page
Grundfos installation and operating instructions, safety
2
instructions and service instructions.
2
2
DANGER
3
Indicates a hazardous situation which, if not avoided,
3
will result in death or serious personal injury.
4
4
4
WARNING
5
Indicates a hazardous situation which, if not avoided,
5
could result in death or serious personal injury.
7
7
CAUTION
7
7
Indicates a hazardous situation which, if not avoided,
8
could result in minor or moderate personal injury.
19
The hazard statements are structured in the following way:
20
21
SIGNAL WORD
23
Description of hazard
23
Consequence of ignoring the warning.
24
- Action to avoid the hazard.
24
25

1.2 Notes

26
The symbols and notes below may appear in Grundfos
26
installation and operating instructions, safety instructions and
26
service instructions.
26
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.