Table Des Matières; Introduction; Items Supplied; Symbols Used In This Document - Grundfos MQ Serie Notice D'installation Et D'entretien

CONTENTS
1. Introduction
2. Items supplied
3. Symbols used in this document
4. Applications
4.1 Pumped liquids
5. Identification
5.1 Type key
6. Operating conditions
6.1 Suction lift
7. Mechanical installation
7.1 Location
7.2 Foundation
7.3 Space requirement
7.4 Pipework
7.5 Protective cover
8. Electrical connection
8.1 Generator or inverter
8.2 Wiring diagram
8.3 Winding resistance measurement
8.4 Winding resistance measurement
8.5 Start-up
9. Functions
9.1 Control panel
9.2 Pump stop
10. Maintenance
10.1 Service kits
10.2 Start-up after a long period of inactivity
11. Service
12. Technical data
12.1 Dimensions
12.2 Electrical data
12.3 Approvals
13. Accessories
14. Fault finding chart
15. MQ frequently asked questions
16. Disposal
Warning
Prior to installation, read these
installation and operating instructions.
Installation and operation must comply
with local regulations and accepted
codes of good practice.

1. Introduction

The MQ is a low-noise water supply system
consisting of pump, motor, pressure tank and
controller combined into one compact unit. The
system is suitable for both indoor and outdoor use.
The self-priming pump starts automatically when
water is consumed in the installation and stops when
consumption ceases. The internal, built-in non-return
valve prevents backflow during priming and
operation.
The MQ pump incorporates overtemperature and
dry-running protection as well as a user-friendly
control panel.
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The built-in pressure tank reduces the number of
starts and stops in case of leakage in the installation.
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2. Items supplied

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The MQ packaging contains these items:
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• MQ water supply system with built-in non-return
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valve
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• non-return inlet valve in plastic bag
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• installation and operating instructions.
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3. Symbols used in this document

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Warning
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If these safety instructions are not
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observed, it may result in personal
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injury!
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If these safety instructions are not
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observed, it may result in malfunction
Caution
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or damage to the equipment!
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Notes or instructions that make the job
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Note
easier and ensure safe operation.
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4. Applications

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The MQ water supply system is designed for these
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typical applications:
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• water pressure boosting
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(maximum inlet pressure: 40 psi)
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• water supply from wells (maximum suction lift:
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25 ft), for example
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- in private homes
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- on farms
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- in market gardens and other large gardens.
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The pump is suitable for rain water.
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4.1 Pumped liquids

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Thin, clean, non-aggressive liquids, not containing
solid particles or fibres.

5. Identification

5.1 Type key

Example
Pump type
Nominal flow rate [m³/h]
Head [m]
Code for pump version
A: Standard
Code for pipework connection
Code for materials
A: Standard
Code for shaft seal
MQ 3 -35 A -O -A BVBP