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1. SAFETY MEASURES
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Before starting the pump, read this instruction booklet carefully and keep it in a safe place for
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future reference. The pump must only be used for the purpose for which it was designed. For
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safety reasons the pump must not be used by anyone under the age of 16 or by anyone who has
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not read and understood the present instructions booklet.
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The power cord and floating switch must never be used to carry or move the pump. Always use
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the pump's handle.
When handling the pump, while it is connected to the electric power supply, you should avoid all
contact with water.
Never remove the plug by pulling on the power cord.
Before taking any action on the pump, always remove the plug from the power socket.
If the power supply cord has been damaged, it must be replaced by the manufacturer or its au-
thorized customer support service in order to avoid all risks.
The pump is equipped with a thermal overload safety device. In the event of any overheating of
the motor, this device automatically switches off the pump. The cooling time is roughly 15 to 20
minutes, then the pump automatically comes on again. If the overload cutout is tripped, it is es-
sential to identify and deal with the cause of the overheating. See Troubleshooting.
2. USE
Multi-impeller submersible pumps with buit-in electronics ideal for rain water and mains irrigation sy-
stems, for pumping water from tanks, ponds and wells and other applications that require high pressure.
The pump is equipped with a built-in electronic control unit which manages its operation (pump ON/FF) and
prevents damages.
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.
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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.
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