ENGLISH
3
Min. base dimensions (mm) 150x150 / Min. height (mm) 800 Fig 2
The dimensions of the trap must always be in relation to the quantity of water arriving and to the flow of the pump, so
as not to subject the motor to excessive starts/hour; it is strongly recommended not to exceed 20 starts/hour.
The pump must be installed in vertical position!
7. ELECTRICAL CONNECTION
The length of the power cable on the pump limits the maximum depth of immersion in use of the pump.
Follow the indications on the technical data plate and in this manual, table 3.
8. START-UP
The electronics automatically control starting and stopping (ON/OFF) of the pump depending on the request for water by the user.
The electronics protects the pump against dry running conditions:
• Priming cycle: When started, the pump will perform the following operation until it is primed: four priming trials of 30”
(motor ON) with pauses of 3” (motor OFF). If there is no water, i.e. if the priming trials fail, the pump will stop for an
hour before trying to prime again. If also this trial fails, there will be a 5 hours pause. Afterwards, if the lack of water
persists, the pump will try to prime every 24 hours until it has picked up a prime.
• Normal Operation: If, during the pumps operation, the water supply is inferior to the minimum delivery for more than
40”, the pump will go into alarm, and start a priming cycle. In this case the priming trials are made after 1, 5, and 24
hours until the pump picks up a prime.
The electronic unit also protects the pump from damages that could be caused by the blocking of the Not Return Valve (NRV). Such
blockings are generally due to dirt deposits, or sand and they cause the pump to operate also if there is no water demand from the end-
user. The protection function stops the pump automatically every hour; if no damage is detected the pump re-starts immediately. If the
VNR is blocked the pump goes into alarm and stops. In this case the pump can be re-started only after unplugging the pump and
removing the obstruction to the VNR.
Flow control:
The flow control deactivates the pump if no water is drawn. If there are leaks on the pressure side (e.g. water tap or hose
not watertight), the pump starts and stops at short intervals. If the pump starts and stops more than 7 times in 2 minutes
(in case of a leak < 6 l /h), it will switch off completely. Once the leak on the pressure side has been eliminated, switch
the pump off and on so that it can be used again.
The best working condition is with the pump be completely submersed in water.
Anyway the motor’s cooling system allows the use at the minimum suction height for very short periods.
The pump is equipped with a stainless steel anti-deposit filter.
9. PRECAUTIONS
RISK OF FROST: when the pump remains inactive at a temperature lower than 0°C, it is necessary to ensure that there
is no water residue which could freeze, causing cracks in the plastic parts.
If the pump has been used with substances that tend to form a deposit, or with water containing chlorine, rinse it after
use with a powerful jet of water in order to avoid the formation of deposits or encrustations which would reduce the
characteristics of the pump.
10. MAINTENANCE AND CLEANING
In normal operation the pump does not require any type of maintenance. In any case, all repair and maintenance work
must be carried out only after having disconnected the pump from the supply mains. When restarting the pump, ensure
that the suction filter is always fitted so as not to create the risk or possibility of accidental contact with moving parts.
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