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Grundfos MQ Series User Manual

Grundfos MQ Series
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GRUNDFOS INSTRUCTIONS
MQ
Installation and operating instructions
US
C
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Grundfos MQ Series Specifications

General IconGeneral
Power Supply230 V, 50 Hz
Protection ClassIP54
Pumped LiquidClean water
Maximum Suction Lift8 m
Inlet/Outlet Size1 inch
Flow Rate3.5-4.5 m³/h
MaterialStainless steel
Built-in Featuresdry-running protection
Liquid Temperature Range0°C to 35°C
Inlet PressureMaximum 3 bar
ApprovalsCE, EAC

Summary

Limited Warranty

Introduction and Document Overview

Applications

Pumped Liquids

Specifies the types of clean, non-aggressive liquids suitable for pumping.

Identification

Type Key Explained

Deciphers the model designation and its components, such as flow rate and head.

Operating Conditions

Suction Lift Performance

Explains the maximum vertical distance the pump can draw water from a source.

Mechanical Installation

Location and Foundation

Instructions for choosing a suitable site and creating a stable mounting base for the pump.

Space and Pipework Requirements

Details on required clearances, pipe connection types, and hose considerations.

Protective Cover Installation

Information on fitting the optional protective cover for outdoor installations.

Electrical Connection

Generator or Inverter Compatibility

Guidance on powering the MQ pump using generators or inverters.

Wiring Diagrams

Provides wiring schematics for 115V and 230V systems.

Winding Resistance Measurement

Explains how to measure winding resistance for 115V and 230V motors.

Pump Startup Procedure

Step-by-step instructions for priming and starting the MQ pump for the first time.

Functions and Operation

Control Panel Features

Description of indicator lights and buttons on the MQ control panel.

Pump Stop and Auto-Reset

Details on automatic pump shutdown and restart functions, including alarm conditions.

Maintenance and Service

Service Kits and Shaft Seal

Information on available service kits and the run-in process for the shaft seal.

Long-Term Storage and Startup

Instructions for preparing the pump after periods of inactivity or draining.

General Service Guidelines

Procedures and precautions for servicing contaminated or general pump repairs.

Technical Data and Accessories

Dimensions and Electrical Specifications

Provides physical dimensions and electrical operating parameters for MQ models.

Approvals and Accessories

Lists product certifications and the part number for the protective cover accessory.

Fault Finding Chart

Frequently Asked Questions

Common MQ Operation Queries

Addresses questions on starting, stopping, pressure limits, priming, and overload detection.

Disposal

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