3
SAFETY STANDARDS
Safety important instructions.
This symbol warns that failure to comply with the prescription leads to a risk of electric shocks.
This symbol warns that failure to comply with the prescription leads to a risk of injury/damage to persons/objects.
Before installation and use of the product, read this manual completely and thoroughly. Installation and
maintenance must be carried out by qualified staff, responsible for performing the hydraulic and electric connections according
to the applicable Standards in force. The manufacturer declines all responsibility for damage deriving from improper use of the
product and is not liable for damage caused by maintenance or repairs that are carried out by unqualified staff and/or using
non-original spare parts. The use of non-original spare parts, tampering or improper use, make the product warranty null and
void.
During first installation make sure that:
- the electric power supply network is not live
- The electric power supply network is protected by ground connections in compliance with the Standards.
When carrying out maintenance:
- the electric power supply network is not live
- Before removing the inverter cover or starting interventions on it, the system must be disconnected from the mains
electricity and you must wait for 5 mins until the intermediate circuit condensers, which can reach voltages of up to 800V, have
the time to discharge via the built-in discharge resistors.
- do not disconnect the pumps if DGBOX is in operation; before you disconnect the pumps, stop the control and disconnect the
power supply.
Emergency stop
An emergency stop can be performed while the inverter is running, by pressing the START/STOP key.
In parallel inverters installations, only the MASTER inverter stops the whole system.
INSTALLATION
DGBOX must be installed in accordance with the following conditions:
in a ventilated room, protected from the elements and from exposure to the sun, the side
distance and height off floor are not less than those indicated in “DIMENSIONS AND WEIGHT”,
to allow proper unit cooling
near the pump - IMPORTANT: FOR APPLICATION WITH LONG CABLE BETWEEN THE INVERTER
AND MOTOR, PLEASE CONSIDER FITTING AN ELECTRONIC FILTER
In
vertical position
POWER CONNECTIONS, PRESSURE AND FLOW SIGNAL CONNECTIONS
Before making the connections, make sure that the ends of the line wires are not live.
Make sure also that the electric power supply network is protected by thermal magnet and differential
protections according to the applicable Standard in force. The differential switch must be high-sensitivity
type
(30 mA in class A for domestic application, class B for industrial applications).
Ground connections
must be in compliance with Standards.
The power supply cable must have 4 wires (3 phase + ground).
The connection cable between the inverter and the motor pump must have 4 leads (3 phase leads + Earth)
and be suitably shielded to comply with EMC standards.
The cable must be sized to curb any power voltage drop within 3%.
IMPORTANT: FOR APPLICATION WITH LONG CABLE, CONSIDER FITTING AN ELECTRONIC
FILTER
TO PREVENT POWER PEAKS AND WAVE DISTORSIONS GENERATED BY LONG CABLES.
