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Grundfos MQ 3-45 User Manual

Grundfos MQ 3-45
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3
English (US)
2. Symbols used in this document
3. 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.
The built-in pressure tank reduces the number of
starts and stops in case of leakage in the installation.
4. Items supplied
The MQ packaging contains these items:
MQ water supply system with built-in non-return
valve
non-return inlet valve in plastic bag
installation and operating instructions.
5. Applications
The MQ water supply system is designed for these
typical applications:
water pressure boosting
(maximum inlet pressure: 40 psi)
water supply from wells
(maximum suction lift: 25 ft), for example
– in private homes
– on farms
– in market gardens and other large gardens.
The pump is suitable for rain water.
5.1 Pumped liquids
Thin, clean, non-aggressive liquids, not containing
solid particles or fibres.
Warning
If these safety instructions are not
observed, it may result in personal
injury.
Caution
If these safety instructions are not
observed, it may result in malfunction
or damage to the equipment.
Note
Notes or instructions that make the job
easier and ensure safe operation.

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Grundfos MQ 3-45 Specifications

General IconGeneral
Power consumption1000 W
Maximum head45 m
Maximum flow rate3 m³/h
Protection classIP54
Weight13 kg
Maximum liquid temperature35 °C
Maximum operating pressure7.5 bar
Pumped liquidClean water
Liquid temperature range0 - 35 °C
Maximum ambient temperature45 °C
Supply voltage220-240 V
Rated power - P20.75 kW
Mains frequency50/60 Hz
Rated current4.5 A
Enclosure classIP54
Inlet connection1 inch
Outlet connection1 inch
Power supply220-240 V, 50/60 Hz
Pump typeCentrifugal
Built-in pressure tankYes
ApprovalsCE
MaterialStainless steel

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