Italtecnica Brio TOP Manuel D'instructions page 33

On closure of the valves, the pump stops but restarts after a few seconds without any leaks
from the system.
The difference between the values Pmin and Pmax is too small, and the pressure drop that occurs on
pump shutdown is sufficient to enable restart. Increase the value Pmax or reduce the value Pmin. Increase
the size of the expansion vessel installed.
The pump starts and stops conti nuously.
There are leaks from the system. Check the various hydraulic connections. Check on display if there are
any pressure drops when the val ves are closed. Check for the possible presence of dirt in the check valve
of Brio Top preventing total closure, and if necessary clean by means of a compressed air jet. Install a
small expansion vessel on outlet from Brio Top.
The device frequently signals dry running condi tions.
The pump intake hose, during periods of system disuse, drains preventing pump filling and subsequent
restart. Check sealing efficiency of the base valve (if fitted).
With very low water fl ow rates, pump operation is irregular.
The water flow rate is too low, and is thus not detected by the device, with consequent pump shutdown.
Install a sm all expansion vessel (1-2 litres) to enhance system flexibility and reduce the number of
restarts.
The system pressure has risen above the set value i n Pmax.
If the ice protection or mechanical seizure protection devices have triggered, pressure may increase over
the set values as the pump is operated in override for 15 seconds, regardless of the values set in Pmax and
Pmin.
The device does not turn on
The electronic board may be damaged; arrange for the device to be checked by the manufacturer.
ГК Водная техника info@water-technics.ru (495) 771 72 72 www.water-technics.ru
Интернет-магазин info@wtpump.ru (499) 937 50 61 (800) 505 78 67 www.wtpump.ru
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