Built-In Protection; Contaminated Pumps - Grundfos SL1 AUTOADAPT Serie Montage- Und Betriebsanleitung

11.10 Built-in protection

The motor incorporates an electronic unit which
protects the motor in various situations.
In case of overload, the built-in overload protection
will stop the pump for 5 minutes. After that period,
the pump is ready to restart if the start conditions are
fulfilled.
To reset the pump, switch off the power supply for 1
minute.
The motor is protected in the following situations:
• dry running
• voltage surges (up to 6000 V) in areas with high
lightning intensity. External lightning protection is
required.
• overvoltage
• undervoltage
• overload
• overtemperature.

11.11 Contaminated pumps

Warning
If a pump has been used for a liquid which
is injurious to health or toxic, the pump will
be classified as contaminated.
If you request Grundfos to service the pump, contact
Grundfos with details about the pumped liquid, etc.
before returning the pump for service. Otherwise
Grundfos can refuse to accept the pump for service.
Possible costs of returning the pump must be paid by
the customer.
However, any application for service (no matter to
whom it may be made) must include details about
the pumped liquid if the pump has been used for
liquids which are injurious to health or toxic.
Before a pump is returned, it must be cleaned in the
best possible way.
23