Functioning Principle; Use And Counterindications - Pentax IPFC 109 Manual De Instrucciones

ATTENTION
ATTENTION

2.1. Functioning principle

2.2.Use and counterindications

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)
For a correct use, at least one autoclave reservoir must be installed in the system.
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
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 motor-
driven 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.
The units in standard execution are designed and built for the pressurised maintenance
of the water systems using clear water from collection tank.
.
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