Product Introduction; Product Description; Intended Use - Grundfos SQF Manual Del Usuario

1. Disconnect the power supply to the product.
2. Lift the product carefully out of the borehole.
3. Disconnect the product from the outlet pipe.
4. Make sure that the storage temperature is within the permissible limits.
If the storage temperature is below zero, the motor must be filled with frost proof motor liquid. Contact a service workshop authorised by
Grundfos. See the Grundfos service instruction by scanning the QR code.
http://net.grundfos.com/qr/i/96547278
Related information
3.2.1 Lifting the product
8. Taking the product out of operation
10.2 Mechanical data

6. Product introduction

6.1 Product description

The SQF range of submersible pumps comprises two pump technologies:
• helical rotor pump for high heads and low flow rates (3")
• centrifugal pump (3" and 4").
SQF pumps are equipped with the Grundfos MSF 3 submersible motor.
6.1.1 Built-in motor protection
The product incorporates protection of the motor against the following situations:
• dry running
• voltage surges up to 6000 V. In areas with high lightning intensity, external lightning protection is required.
• overvoltage
• undervoltage
• overtemperature.
In case of overload, the built-in overload protection will stop the pump for 5 minutes. After that period, the pump will automatically attempt to
restart.
Related information
3.3.3 Motor protection
6.1.2 Dry-running protection
If the pump is running and the liquid level in the borehole, tank or basin is drawn below the level sensor, the dry-running protection will stop the
pump to ensure that it is not damaged. A level sensor fixed on the power cable ensures that the pump operation stops before dry running
occurs.
After a stop caused by dry running, the pump is automatically reset when the level sensor is again submerged in the liquid, and the pump will
restart after 5 minutes.

6.2 Intended use

This product is intended for the following applications:
• groundwater supply for private households, irrigation systems, and small waterworks
• liquid transfer in tanks
• pressure boosting.
Only use the product according to the specifications stated in these installation and operating instructions.
6.2.1 Drinking water
If the product is used for drinking water, the following precautions must be taken to avoid contamination:
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