Introduction; Items Supplied; Applications; Pumped Liquids - Watts MQ 3-45 Notice D'installation Et De Fonctionnement

WARNING
!
The MAXIMUM inlet pressure for the Watts MQ
3-45 is 40 PSI. Running the pump with a inlet
pressure higher than 40 psi may cause the pump
to leak. Watts will not be responsible for any
damage to the pump and/or its surroundings if
this warning is not followed.
CAUTION
!
Incoming water pressures fluctuate in nearly
ALL water systems because of demand/usage.
Therefore, pressure monitoring may be required
for a day or more to determine your maximum
incoming water pressure. If the incoming water
pressure is confirmed to be greater than 40 PSI,
a pressure regulating valve MUST be installed on
the water supply piping feeding the pump.
NOTICE
You are advised to check water source pressure
before installation. To determine the highest
pressure at the water inlet over 24 hours of
testing, a lazy hand gauge is recommended.

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. Cover required for outdoor installation.
Watts Part MQ 3-45 COV 96693071 (Grundfos
#96693071)
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 fibers.
5