Electrical Connection - Grundfos SQF Manual Del Usuario

3.2.5.1 Securing the pump with a straining wire
Do not use the straining wire to carry the load of both pump and riser pipe when you lower the pump or pull the pump out of the
borehole.
1. Secure the pump with an unloaded straining wire.
Fig. Straining wire
2. Lower the pump to the required depth and complete the installation with a borehole seal.
3. Loosen the straining wire so that it becomes unloaded and lock the straining wire to the borehole seal with wire locks.

3.3 Electrical connection

DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work on the product.
‐
Make sure that the power supply cannot be switched on accidentally.
DANGER
Electric shock
Death or serious personal injury
‐
The product must be earthed.
‐
Connect the product permanently to the fixed wiring via an external main switch with a minimum contact gap of 3 mm in all poles.
WARNING
Electric shock
Death or serious personal injury
‐
Do not lift the product by the power cable.
All electrical connections must be carried out by a qualified electrician in accordance with local regulations.
Check that the supply voltage and frequency correspond to the values stated on the nameplate.
If the power cable is damaged, it must be replaced by the manufacturer, the manufacturer's service partner or a similarly qualified
person.
The cross-sectional area of the submersible drop cable must be large enough to meet the voltage requirements.
Never connect the product to an external frequency converter.
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