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Idiomas disponibles
Idiomas disponibles
• a coupling stub pipe for each pump assembled at intake and provided with
• threaded hole for the connection of eventual air feeder
• rubber anti-vibrating supports with metal core
• manometer with radial connection
• electric board in IP 55 plastic box
• pre-calibrated pressure switches (one per pump) assembled on the flow collector and directly connected to the
electric board
• heat protection electric cables of fire-retardant type, connected to the equipment and to the board
• UPON REQUEST: can be supplied separately membrane tanks (20, 24 litres)
ATTENTION
For a correct use, at least one autoclave reservoir must be installed in the system.
ATTENTION
ALL UNITS:
• ARE BUILT IN COMPACT EXECUTION TO ENABLE THEIR USE IN REDUCED SPACES ALSO
• ARE REALISED USING HIGH QUALITY COMPONENTS
• ARE COMPLETELY ASSEMBLED AND TESTED IN FACTORY
• TO FUNCTION THEY MUST FIRSTLY BE CONNECTED TO THE
• HYDRAULIC SYSTEM AND TO THE POWER SUPPLY LINE.
2.1 FUNCTIONING PRINCIPLE
In static position with system pressurised, the contacts of the pressure switches result open and the system in stand-by.
Upon decreasing of the pressure due to water request, pressure switch number one closes the contact and starts the first
motordriven pump. If the performances supplied by the same are sufficient for maintaining an adequate pressure, the
motor-driven pump works until no water flow request and stops. If, on the contrary, other utilities are used and the pressure
decreases further, the second pressure switch closes the contact and starts the second motor-driven pump and so on for
other eventually available units.
Upon stabilising of the pressure, the contacts of the pressure switches open and the motor-driven pumps stop with reverse
order to start-up.
The electric board changes the starting order of the motor-driven pumps at the beginning of every new cycle, so as to obtain
a balanced share of the work times. The protection of the motor-driven pumps against the disconnection and the dry start, is
assured by a float on the intake tank, to be connected by the user to the contacts envisioned on the electric board.
2.2 USE AND COUNTERINDICATIONS
The units in standard execution are designed and built for the pressurised maintenance of the water systems using clear
water from collection tank.
ATTENTION
The standard execution units are not suitable for:
• the dry running the pumping of liquids different from clear, clean, chemically and mechanically non aggressive water
• the pumping of liquids with temperature above 40°C
• the pumping of flammable liquids
• the functioning in places classified at risk of explosion
• the functioning in places without ventilation, in that they do not guarantee the ventilation of the motors and
facilitate the forming of condensation
• the functioning with too frequent start-ups and switch-offs (approximately from 5 to 30 start-ups every hour, at regular
intervals, per individual pump. The greater the power of the pumps, the lower the number of start-ups admitted). For
further information please contact the manufacturer
• the functioning at altimetric level, approximately above 1000 m (can vary depending on the type of motors used). For
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