Operation
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Operation
7.6.7 Bilge operation
NOTICE
Material damage due to cavitation!
With increasing suction lift the pump performance is reduced. Too high
suction lifts, very large flow rates and high pump speeds can lead to
cavitation in the pump. Cavitation causes extreme local pressure peaks,
which can damage the pump. Cavitation of the pump can be recognized by
a sharp drop in performance and noises in the pump, which sound as if
pebbles are being pumped. Cavitation of the pump must be avoided at all
costs, otherwise internal parts of the pump (e.g. impeller) are damaged. If
the suction hose is pulled together during external drafting operation, the
water column may break off.
Only operate pump in external drafting operation with suction strainer
and suction filter.
If there is danger of cavitation reduce pump speed, flow rate or suction
lift.
Do not operate the pump at high speed and free discharge.
Monitor all display instruments of the pump unit.
Observe the lowering of the water at drafting points.
Use dimensionally stable suction hose for external drafting operation.
► Operate portable pump as described in chapter "External drafting/
priming".
► As soon as water is discharged, deactivate the priming pump.
►Actuate Priming pump function switch, to deactivate the priming
pump.
The priming pump is deactivated.
► Open pressure outlets.
Refer to chapter "Open/close discharge pipes".
► Set pump pressure to desired value.
Refer to chapter "Adjust water pump pressure".
The portable pump is operated in bilge operation.
7.6.8 Open/close discharge pipes
Open manual pressure outlet
► Open the pressure outlet valve to open the desired pressure outlet.
Corresponding pressure outlet is opened.
Close manual pressure outlet
► Close the pressure outlet valve to close the desired pressure outlet.
Corresponding pressure outlet is closed.
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