Operating Manual
Do - fit suction and discharge pressure
gauges to monitor pressures for
diagnostic purposes.
Do - install non-return valve to prevent
turbining when high pressures are
applied to the pump whilst it is not in
use. Valves are also recommended
if two pumps are to be used on
manifold/common discharge lines.
Do - make the necessary piping
arrangements if flushing is required
for the seal.
Do - provide a hose cleaning facility to
assist maintenance, ensuring the
drive unit meets the specification for
hose cleaning.
4.0 System Design and Installation
4.1 System Design Advice
Suction Line
Discharge Line
When designing the pumping system :-
Do - confirm with the supplier the Net
Positive Suction Head (NPSH)
requirements for the pump, as this is
crucial for ensuring the smooth
operation of the pump and
preventing cavitation.
Do - avoid suction lifts and manifold/
common suction lines for two pumps
running in parallel, as this may cause
vibration or cavitation.
Do - protect the pump against blockage
from hard solid objects e.g. nuts,
bolts etc. Also protect the pump
from accidental operation against a
closed valve by using one of the
following methods :- relief valves,
pressure switch, current monitoring
device.
Do
- Install a motor current sensing
device which automatically reverses
the pump when an overload or jam
is detected.
Note : This is not recommended when non
return valves are fitted.
Plan View
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