English (GB)
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6. Product introduction
6.1 Product description
The pumps are submersible booster pumps available
in two main versions:
•
pump with integrated inlet strainer with 1 mm
mesh
•
pump with side inlet, which includes a flexible
inlet hose with floating inlet strainer with 1 mm
mesh.
Both versions are available with or without float
switch. The float switch can be used for automatic
operation or dry-running protection of the pump.
6.2 SB pumps
The SB submersible booster pump is available with
integrated inlet strainer or floating inlet strainer. The
SB pump must be connected to an external
controller, see section
.
6.3 SB HF pumps
SB HF is a high-flow submersible pump with a
stainless steel body. The integrated inlet strainer
enables the pump to draw water from a low level in
the installation. The SB HF pump must be connected
to an external controller, see section
3.6.2 Connecting to external controller
.
6.4 SBA pumps
The SBA pump is a complete submersible booster
pump available with integrated inlet strainer or
floating inlet strainer.
SBA has a built-in control unit, eliminating the need
for a controller.
The pump has built-in protection against
overheating.
6.5 SBA dry-running protection
The built-in control unit incorporates dry-running
protection that automatically stops the pump in case
of dry running.
The dry-running protection functions differently
during priming and operation.
6.5.1 Dry running during priming
If the control unit does not detect any pressure and
flow within 5 min after it has been connected to a
power supply and the pump has started, the dry-
running function is activated and the pump stops.
6.5.2 Dry running during operation
If the control unit does not detect any pressure and
flow within 40 s during normal operation, the dry-
running function is activated and the pump stops.
6.5.3 Resetting of dry-running alarm
If a dry-running alarm has been activated, you can
restart the pump manually by switching off the power
supply, wait for 2 min and reconnect power. If the
control unit does not detect any pressure and flow
within 40 s after restarting, the dry-running alarm is
reactivated.
6.6 Intended use
Grundfos SB, SBA and SB HF pumps are designed
for pumping clean water. The pumps are especially
suitable for rainwater applications and small private
wells.
Typical applications:
•
traditional wells
•
shallow wells
•
rainwater collection in tanks
•
boosting of public water
•
emptying of garden ponds
•
irrigation.
6.7 Pumped liquids
The pumps are suitable for thin, clean, non-
aggressive and non-explosive liquids, not containing
solid particles or fibres that may attack the pump
mechanically or chemically.
The pump is not suitable for these liquids:
•
liquids containing long fibres
•
inflammable liquids (oil, petrol, etc.)
•
aggressive liquids.
