Performance
mode
Description Benefits
Self-priming
The self-priming
valve is fully
opened.
Best
performance
and lowest
noise level in
suction
applications.
Air handling
1
When there is
air in the
installations, it
can accumulate
in the
hydraulics.
Partially closing
the self-priming
valve can
provide
assistance.
Improves the
pump's
capability to
handle air in the
water.
Positive inlet
If the installation
has a positive
inlet pressure,
the pump is
always primed,
and the self-
priming valve
can be fully
closed.
Removes sound
associated with
self-priming
valve movement
in installations
with positive
inlet pressure.
1
This performance mode will result in some performance loss
and a slight increase in noise level. Please refer to technical
data for more information.
9.2.3.1
Selecting the performance mode
If the performance mode needs to be changed from
the default setting, follow these steps:
1. Remove the pump cover.
a. Unscrew and remove the priming plug from
the pump.
b. Loosen and remove the inlet and outlet
connections from the pump.
c. Loosen and pull away the pump cover to
remove it from the pump.
TM075488
Remove the pump cover
2. Locate the performance mode knob.
3. Using a size 10 hex key, turn the knob to the
desired selection.
Self-priming
Air handing
Positive inlet
TM075489
Rotate knob to select performance mode.
4. Return the pump cover and reconnect the
priming plug and connections.
20
English (GB)
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