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Grundfos MG 71A2 User Manual

Grundfos MG 71A2
24 pages
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MG
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
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Grundfos MG 71A2 Specifications

General IconGeneral
Rated Power0.25 kW
Frequency50 Hz
Voltage230/400 V
Frame Size71
Efficiency ClassIE1
Protection DegreeIP55

Summary

General Information

Hazard Statements

Safety warnings and symbols used in installation and operating instructions.

Safety Instructions

Importance of observing safety instructions for correct installation, operation, and maintenance.

Product Introduction

Product Description

Details of Grundfos MG motors, their applications, and specifications.

Product Identification

How to identify motors via nameplates and the type key system.

Product Receiving and Construction

Inspection and Handling

Procedures for checking, unpacking, lifting, and storing the motor safely.

Mounting Designations

Standard designations for motor mounting types according to IEC 60034-7.

Motor Construction Details

Drain Holes

Purpose and types of drain holes for moisture escape from stator housing.

Motor Bearings

Information on bearing types, lubrication, and maintenance procedures.

Cable Entry

Specifications for cable entry holes in the terminal box.

Operating Conditions

Ambient Temperature and Altitude

Max temperature and altitude limits affecting motor performance and life.

Frequency Converter Operation

Guidelines for operating motors with frequency converters, including phase insulation.

Mechanical Installation

Clearance and Terminal Box

Required clearance for air circulation and terminal box positioning guidelines.

Outdoor Installation and Foundation

Precautions for outdoor installation and requirements for motor foundation.

Electrical Installation

General Electrical Information

Voltage, frequency, quality requirements, and general connection precautions.

Motor Protection

Types of motor protection for single and three-phase motors.

Electrical Connection and Startup

Electrical Connection

Procedures and safety warnings for connecting the motor electrically.

Insulation Resistance Measurement

Procedure for measuring insulation resistance before startup.

Service and Maintenance

Motor Inspection

Regular inspection and cleaning procedures for the motor.

Motor Bearings

Procedures for motor bearing replacement, lubrication, and maintenance.

Fault Finding

Fault Finding

Guide for troubleshooting common motor faults and their causes.

Technical Information

Technical Data

Location of technical specifications like weight and enclosure class.

Product Disposal

Instructions for environmentally sound disposal of the product.

Appendix

Starts Per Hour

Table showing maximum number of starts per hour for different motor types.

Appendix Details

Dimensional Sketches

Visual representations of motor dimensions and mounting configurations.

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