Grundfos MG, Instructions Manual

Page: 6 / 76

English (GB)
6
English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this document
1.1 Safety
Observe the safety instructions to ensure correct installation,
operation and maintenance of the motor. The instructions must
be known by any person installing, using or maintaining the
motor. Failure to observe the instructions may invalidate the
warranty.
Safety equipment required to prevent accidents must be made
available according to local safety instructions.
2. Introduction
These installation and operating instructions apply to these
Grundfos MG motors:
For model designation, see section 4.2 Type key .
2.1 Application
MG motors can be used within the framework of IEC 60034.
1. Symbols used in this document
6
1.1 Safety 6
2. Introduction 6
2.1 Application
6
3. Delivery and handling 7
3.1 Delivery 7
3.2 Handling 7
4. Identification 7
4.1 Nameplate 7
4.2 Type key 7
5. Construction
8
5.1 Mounting designations 8
5.2 Drain holes 8
5.3 Motor bearings
8
5.4 Balancing 8
5.5 Cable entry/screwed connection 8
6. Operating conditions
9
6.1 Ambient temperature and installation altitude
9
6.2 Frequency converter operation 9
7. Mechanical installation 10
7.1 Clearance
10
7.2 Terminal box positions 10
7.3 Outdoor installation 10
7.4 Foundation
10
7.5 Alignment 10
7.6 Fitting of coupling parts and pulleys 10
8. Electrical installation 10
8.1 General information 10
8.2 Electrical connection 10
9. Start-up 11
9.1 Measuring the insulation resistance
11
9.2 Direction of rotation 11
10. Operation 11
10.1 Max. number of starts per hour
11
11. Maintenance 11
11.1 Motor 11
11.2 Motor bearings 11
12. Technical data
11
12.1 Weight 11
12.2 Enclosure class 11
12.3 Dimensional sketches
11
12.4 Sound pressure level 11
12.5 Winding resistances 11
13. Fault finding
12
14. Service 12
14.1 Motor bearings 12
14.2 Service documentation 12
15. Disposal
12
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
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.
Warning
The surface of the product may be so hot that
it may cause burns or personal injury.
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.
Model
Phase
Power range
[kW]
IEC frame size
1 3 2-pole 4-pole 2-pole 4-pole
B
 0.25 - 2.2 0.18 - 1.1 71 - 90 71 - 90
 0.25 - 71 -
C  0.37 - 11 0.25 - 5.5 71 - 132 71 - 132
D  1.1 - 11 1.1 - 4.0 90 - 160 90 - 112
F  7.5 - 22 5.5 - 15 132 - 180 132 - 160
H  0.75 - 22 0.75 - 15 80 - 180 90 - 160