On correct completion of installation of the hydraulic and electrical system and after reading the entire manual (see the “installation” chapter in the instruction manual), the inverter can be powered up. Only in the case of initial power-up, after the initial presentation, does the display show the error condition "EC" with the message informing the user to set the parameters required for control of the electric pump; the inverter does not start up. To unlock the unit, simply set the rated current value of the electric pump used. Before start-up, if the system pump requires special settings other than the default versions, first make the modifications required and then set the rated current value, to ensure start-up with the correct settings. The parameters can be set at any time, but it is recommended to follow this procedure when the application is in operating conditions that may impair integrity of the system components, such as in the case of pumps with a minimum frequency limit or that do not tolerate certain dry running times etc.The following steps apply both in the case of systems with a single inverter and multi-inverter systems. In the case of multi inverter systems, the relative connections of sensors and communication cables must be made, after which one inverter at a time must be activated, performing the initial power-procedure for each. Once all inverters are configured, all multi-inverter system elements can be powered up. We recommend you read the instruction manual of the ADAC (also available in our DNA software) for useful information on the use of the panel.