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Grundfos MG Series User Manual

Grundfos MG Series
18 pages
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MG
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
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Grundfos MG Series Specifications

General IconGeneral
Insulation ClassF
MaterialStainless steel
Voltage220-240 V, 380-415 V
Frequency50 Hz / 60 Hz
Max. Ambient Temperature+40 °C
PhaseSingle or Three Phase (depending on model)

Summary

Symbols used in this document

Safety

Explains warnings and safety precautions for safe operation of the motor.

Construction

Mounting designations

Illustrates different motor mounting types according to IEC 60034-7 standards.

Motor bearings

Information on motor bearings, including lubrication and type.

Operating conditions

Ambient temperature and installation altitude

Outlines maximum ambient temperature and installation altitude for motor operation.

Frequency converter operation

Details on connecting three-phase motors to frequency converters and necessary precautions.

Acoustic noise and voltage peaks

Discusses increased noise and voltage peaks from frequency converter operation and mitigation.

Mechanical installation

Electrical installation

General information

Covers operating voltage, frequency, and voltage quality requirements for MG motors.

Motor protection

Details on motor protection, including thermal switches and circuit breakers.

Electrical connection

Procedures and safety precautions for connecting the motor's electrical wiring.

Start-up

Measuring the insulation resistance

Procedure for measuring insulation resistance before start-up and safety warnings.

Maintenance

Motor bearings

Detailed information on bearing lubrication, life expectancy, and maintenance.

Motors without lubricating nipples

Describes bearings greased for life and their expected life at different temperatures.

Fault finding

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