Soft Starter; Maintenance And Service - Grundfos SP Series Installation And Operating Instructions Manual

8.2 Soft starter

The starting voltage is minimum 55 % of the value stated on the
nameplate.
If a high locked-rotor torque is required or if the power supply is not
optimal, the starting voltage must be higher.
Run-out time: Maximum 3 seconds.
If the above-mentioned run-up and run-out ramps are followed,
unnecessary heating of the motor is avoided.
If the soft starter is fitted with bypass contacts, the soft starter is in
operation during run-up and run-out.
Do not use the soft starter in connection with operation with a
generator.
100 %
55 %
0
Operation with a soft starter
Pos. Description
1 Voltage
2 Time
3 3 seconds
4 3 seconds

8.3 Maintenance and service

All pumps are easy to service.
Service kits and service tools are available from Grundfos.
The pumps can be serviced at a Grundfos service center.
DANGER
Toxic or radio active liquid
Death or serious personal injury
‐
If a pump has been used for a liquid which is injurious
to health or toxic, the pump will be classified as
contaminated.
Contact Grundfos with details about the pumped liquid before
returning the product for service. Otherwise Grundfos can refuse to
accept the product.
Possible costs of returning the pump are paid by the customer.
8.3.1 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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