Salicru SLC ELITE MAX Series, Руководство пользователя и инструкция по установке

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external E.P.O. button is not added, there must be a cable jumper JP1 instead . (enclosed in a circle in the fig.2.7.1a).
2.8.- Main earthing protection.
The input earth cable must be connected to the earth stud of the UPS. That cable must be the first one to be connected. It is better
to place an anti-rust between the earth stud and the contact board to extend the life of the contact.
¡WARNING!
IF THE EARTHING IS UNSUITABLE, THE STAFF COULD SUFFER ELECTRICAL DISCHARGES OR
TO PROVOKE A FIRE.