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Grundfos MAGNA3 25-100 (N) - User Manual

Grundfos MAGNA3 25-100 (N)
62 pages
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MAGNA3
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

Table of Contents

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Grundfos MAGNA3 25-100 (N) Specifications

General IconGeneral
Max. Head10 m
Max. Operating Pressure10 bar
Connection SizeDN 25
Housing MaterialCast iron
Insulation classF
Liquid temperature range-10 .. 110 °C
Voltage1 x 230V
Pump TypeCirculator
Impeller MaterialComposite material
ControlAUTOADAPT, FLOWLIMIT, and Proportional Pressure
CommunicationModbus RTU
Protection ClassI

Summary

General Information

Safety Symbols on the Pump

Details safety symbols present on the pump and their meanings.

Installing the Product

Mechanical Installation

Covers the process of physically mounting the pump, considering flanged and threaded versions.

Electrical Installation and Supply Voltage

Covers electrical connection, safety, and supply voltage requirements.

Connecting the Power Supply

Detailed steps for connecting the power supply cable to terminal-connected pump versions.

Plug-Connected Versions

Instructions for assembling and disassembling the plug for plug-connected pump versions.

Connection Diagram

Illustrates wiring diagrams for terminal-connected and plug-connected motors with protective devices.

Starting up the Product

Single-head Pump Startup

Guides on initial startup procedures for single-head MAGNA3 pumps.

Twin-head Pump Startup

Instructions for starting up twin-head MAGNA3 pumps, including warning handling.

Control Functions

External Connections

Shows wiring diagrams for terminal-connected and plug-connected versions.

Setting the Product

System Application and Control Modes

Recommends control modes based on system applications and details mode selection.

Constant Curve and Multipump System

Explains constant curve operation and the multipump function for controlling multiple pumps.

Operating the Product

Settings Menu

Setpoint

Guides on setting the desired setpoint for the pump to match system requirements.

Operating Mode and Control Mode

Explains how to select operating mode and details various control modes available.

AUTOADAPT, FLOWADAPT, and Proportional Pressure

Explains AUTOADAPT, FLOWADAPT, and proportional pressure control modes.

Constant Pressure, Temperature, and Differential Temperature Modes

Details constant pressure, temperature, and differential temperature control modes.

Setting Values for Control Modes

Setpoint Influence

Setup, Analog Input

Heat Energy Monitor

External Setpoint Influence

Servicing the Product

Fault Finding the Product

Fault Finding Procedures

Provides methods for resetting fault indications and general troubleshooting advice.

Warning and Alarm Codes

Installing a Communication Interface Module

Technical Data

Flange Forces and Moments

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