Pentair Flotec EVO-MULTIPRESS 340 SX LOGIC SAFE Manual De Uso página 19

CAPITOLO 2
IMPIEGO
The Evo-Multipress pump is a horizontal self-priming multi-stage pump for pumping clean liquids without solid
suspended particles, fibers, or abrasive materials that may chemically or mechanically attack the pump, or liquids
not compatible with the pump construction material.
The pump can be used to pump water in
• water distribution systems
Evo-Multipress is a pre-assembled and pre-wired unit made up of a pump, expansion tank, fittings, pressure switch,
pressure gauge and flexible hose, which:
• starts and stops the pump
according to opening or closing
of utilities.
The expansion tank has a membrane that divides it into two compartments; one for water and one for gas. The water
section serves to collect and deliver fluid in the event of a request from a utility. The gas in the relative section is
compressed on collection of the fluid and decompressed when the fluid is then delivered to the utility. The pump
increases the pressure and conveys the fluid via the pipelines to the utilities. It is started up or stopped by the
electro-mechanical pressure switch that controls pressure on the water line. At the time of water collection, the
pressure in the pipeline drops; when the set intervention is reached on the pressure switch, the pump is started up.
On reduction of the request, the pressure increases until it reaches the shutoff pressure value.
The expansion tank influences the pump start-up and shutdown cycles.
The pressure switch is calibrated at a set point and the expansion tank is pre-charged, which must be modified on
the basis of installation specifications in order to optimise operation.
• irrigation systems
• reduces water hammer effect.
USE AND MAINTENANCE MANUAL
• rain water collection systems
• is ready to use
EN
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