Maximum Inlet Pressure; Minimum Flow Rate - PYD Electrobombas VERTINOX Serie Manual De Instalación Y Mantenimiento

OPERATING AND MAINTENANCE MANUAL
SERIE VERTINOX

4.5 Maximum inlet pressure

Figure 2. shows the maximum permissible inlet pressure.
However, the actual inlet pressure pressure when the pump is running against a closed calve must
always be lower than the maximum permissible operating pressure.
The pumps are pressure-tested at a pressure of 1.5 times the value stated in fi g 2 .
4.6 Minimum fl ow rate
Due to the risk of overheating,the pump should not be used at fl ows below the minimum fl ow rate.
The curve below shows the minimum fl ow rate as a percentage of the nominal fl ow rate in relation
to the liquid temperature.
Fig.4 Air-cooled top.
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