Grundfos SQ/SQE

SQ pumps offer the following features:
• dry-running protection
• high pump and motor efficiency
• wear resistance
• protection against upthrust
• soft starter
• overvoltage and undervoltage protection
• overload protection
• overtemperature protection.
Additionally, SQE pumps offer the following benefits:
• variable speed
• electronic control and communication.
The motors are based on the most recent technology
within permanent magnets. This technology is the
main reason for the high efficiency of the motors. The
motors have a built-in electronic unit containing a
frequency converter featuring soft start.
SQ pumps are fitted with a single-phase Grundfos MS
3 or MS 3-NE motor, and by means of the built-in
frequency converter, the motor is driven at a constant
speed.
SQE pumps are also fitted with a single-phase
Grundfos MSE 3 or MSE 3-NE motor. Both motor types
can communicate with the Grundfos CU 300 and CU
301 control units, which can be operated with Grundfos
GO Remote.
SQE pumps feature variable speed which is offered
through frequency control. This means that the pump
can be set to operate in any duty point in the range
between the pump minimum and maximum
performance curves.
CU 301 is specially developed for applications where a
constant pressure is required.
CU 300 and CU 301 provide full control of SQE pumps.
In case of pump fault, the front of the CU 300 or CU
301 shows an alarm. Grundfos GO Remote
enables monitoring of the installation and changing of
the factory settings.
SQE pumps can operate without a CU 300 or CU 301.
However, in such case, the pump does not offer all the
features available when connected to a CU 300 or a
CU 301.