Batch; Anti-Cavitation - Grundfos DME Serie Instrucciones De Instalación Y Funcionamiento

5.14 Batch

The pump is dosing the set quantity in batches at the
maximum capacity or the set maximum capacity, see
section 5.16 Capacity limitation.
The quantity is dosed every time the pump receives
an external pulse.
If the pump receives new pulses before the previous
batch is performed, these pulses will be ignored.
Quantity per batch
Pulse
Fig. 14
Operating display
Fig. 16
24
Pulse
The setting range is the same as for Timer, see
section 5.13 Timer.
Set value per batch
Fig. 15

5.15 Anti-cavitation

The pump features an anti-cavitation function. When
this function is selected, the pump extends its
suction stroke, resulting in optimized priming.
The anti-cavitation function is used:
• when pumping liquids of high viscosity
• in the case of a long suction tube
• in the case of a high suction lift.
Depending on the circumstances, the motor speed
during the suction stroke can be reduced by 75 %,
50 % or 25 % compared to the normal motor speed
during the suction stroke.
The maximum pump capacity is reduced when the
anti-cavitation function is selected. See section
3.1 Mechanical data.