Italtecnica Brio TOP Manual De Instrucciones página 16


TROUBLESHOOTING

When one of the system valves is opened the pump does not start or starts only after a few
seconds.
The set Pmin value is too low, or a check valve has been fitted downline of the device. Check the setting
of the parameter Pmin.
If the parameter "Aux. Con." is set to "2" or "3" and an electric float is used, check to ensure correct
operation. If no electric float is used, check that the jumper is wired on the relative terminals.
Ensure correct connection between Brio Top and the electric pump

The pump does not stop
The check valve inside Brio Top may be blocked in the open position; ensure correct valve movement
and remove any foreign bodies by means of compressed air if necessary.
The sensor reading the valve position is faulty; arrange for the device to be checked by the manufacturer.

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 continuously.
There are leaks from the system. Check the various hydraulic connections. Check on display if there are
any pressure drops when the valves 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 conditions.
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 flow 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 small expansion vessel (1-2 litres) to enhance system flexibility and reduce the number of
restarts.

The system pressure has risen above the set value in 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.
IT EN F DE E PT SK CZ
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