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ADVANTAGES<br />
Constant pressure – Reduced running costs – No water hammering – Compact size<br />
Reduced maintenance - Reduced power factor correction – Reduced water consumption.<br />
CONSTRUCTIONAL CHARACTERISTICS<br />
The inverter-controlled units comprise two or three centrifugal pumps totally assembled on a galvanised steel bedplate<br />
that is tested and ready for fitting.<br />
Including shut-off and non-return valves for each pump, galvanised steel suction and delivery manifolds, expansion<br />
tanks, pressure transducer, emergency pressure switches, control panel with inverter.<br />
ELECTRICAL PANEL WITH INVERTER<br />
The Inverter continuously adjusts the speed of rotation of an electric pump in order to maintain constant pressure at a<br />
variable flow.<br />
The other electric pumps support the first by intervening in a cascade sequence following an increase in water<br />
requirements; during this phase, the Inverter works in the modulation mode.<br />
HYDROCONTROLLER manages the Inverter-commanded pump exchange system and alternates the order in<br />
which they start in order to ensure that each pump is used as much as the others.<br />
78<br />
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