Grundfos SP Series User Manual

9. Troubleshooting
The majority of problems that develop with submersible pumps are
electrical, and most of these problems can be corrected without
pulling the pump from the well. The following chart covers most of
the submersible service work. Start with the simplest solution first;
always make all the above-ground checks before pulling the pump
from the well.
Usually only two instruments are needed:
• a combination of voltmeter and ammeter
• an ohmmeter.
DANGER
Electric shock
Death or serious personal injury
‐ Use rubber gloves and boots and make sure to have
metal control boxes and motors grounded to power
supply ground or steel drop pipe or casing extending
into the well.
DANGER
Electric shock
Death or serious personal injury
‐ Submersible motors are intended for operation in a
well. When not operated in a well, failure to connect
motor frame to power supply ground may result in
serious electric shock.
9.1 SPE
The following is only valid for SPE pump sets.
DANGER
Magnetic field
Death or serious personal injury
‐ Do not handle the rotor if having a pacemaker.
DANGER
Crushing of hands
Death or serious personal injury
‐ Keep the rotor surroundings free of magnetic objects
and be careful when placing the rotor on a magnetic
surface.
DANGER
Electric shock
Death or serious personal injury
‐ Make sure that motor cable ends are not live before
starting work on the product.
‐ Make sure that the power supply cannot be
accidentally switched on.
In case of unintended water flow through a non-energized pump,
there is a risk that the moving parts of the pump and the motor may
start rotating, and generate voltage over the terminals. The size of
the voltage depends on the rotation speed. Therefore, the motor
terminals must be considered as live until proven otherwise.
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English (US)

Grundfos SP Series Specifications

General

Brand	Grundfos
Model	SP Series
Category	Water Pump
Language	English