Grundfos MGE F, Service Instructions Manual

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English (GB)
2
English (GB) Service instructions
Original service instructions
CONTENTS
Page
1. General information
1.1 Hazard statements
The symbols and hazard statements below may appear in
Grundfos installation and operating instructions, safety
instructions and service instructions.
The hazard statements are structured in the following way:
1.2 Notes
The symbols and notes below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
1. General information 2
1.1 Hazard statements
2
1.2 Notes
2
1.3 Scope of delivery 3
1.4 Safety details to be aware of when working on the
product 3
2. Identification 4
2.1 Nameplates 4
2.2 Type key 5
2.3 Configuration 6
3. General description 6
3.1 Wiring diagrams and signal terminals
7
3.2 Control panel 8
3.3 Indicator lights 8
4. Fault finding
9
4.1 Safety instructions 9
4.2 Fault finding procedure 9
4.3 Operating conditions
9
4.4 PC Tool E-products as service tool 10
4.5 Fault observations 10
4.6 Fault finding using the indicator lights on the control
panel 11
4.7 Fault finding using alarm and warning codes 15
5. Maintenance 19
5.1 Lubrication of motor bearings 19
5.2 Replacement of motor bearings 20
6. Emergency operation (bypass) 22
6.1 Establishing emergency operation
23
6.2 Re-establishment of frequency converter operation 24
7. Drawings and diagrams 25
8. Tightening torques and lubrication
28
8.1 Tightening torques 28
8.2 Lubricating intervals and grease 28
9. Service tools
29
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.
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.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.
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.