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Features and benefits
Overload protection
If the upper load limit is exceeded, the motor will auto-
matically compensate for this by reducing the speed. If
the speed falls below 500 rpm, the motor will be cut out
automatically.
The motor will remain cut out for 10 sec. after which
period the pump will automatically attempt a restart.
The overload protection prevents burnout of the motor.
Consequently, no extra motor protection is required.
Overtemperature protection
A permanent-magnet motor gives off very little heat to
its surroundings. An efficient internal circulation system
leads the heat away from the rotor, stator and bearings
ensuring optimum operating conditions for the motor.
As an extra protection, the electronic unit has a built-in
temperature sensor. When the temperature rises above
+185°F, the motor is automatically cut out; when the
temperature has dropped to +167°F, the motor is auto-
matically cut in again.
Maximum Power Point Tracking (MPPT)
The built-in electronic unit gives the SQFlex system a
number of advantages compared to conventional prod-
ucts. One of these advantages is the built-in micropro-
cessor with MPPT (MPPT = Maximum Power Point
Tracking).
Thanks to the MPPT-function, the pump duty point is
continuously optimised according to the input power
available. MPPT is only available for pumps connected
to DC supply.
Wide voltage range
The wide voltage range enables the motor to operate at
any voltage from 30-300 VDC or 90-240 VAC. This
makes installation and sizing especially easy.
Reliability
The MSF 3 has been developed to provide optimum
reliability which is achieved through the following
features:
• carbon/ceramic bearings
• excellent starting capabilities
• various protection facilities.
8
Installation
The following features ensure simple installation of the
SQF pump:
• low weight ensuring user-friendly handling
• installation in 3", 4" or larger boreholes
• only an on/off switch is needed, which means that
no extra motor starter / starter box is necessary,
• comes with cable and cable cover pre-installed.
Note: Horizontal installation requires the water level
electrode to be placed min. 12 to 24 inches above the
pump to ensure the dry-running protection.
Service
The modular pump and motor design facilitates instal-
lation and service. The cable and the end cover with
socket are fitted to the pump with nuts which enable
replacement in the field.
12 - 24 in
SQFlex
Allowed
Not allowed
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