The LED bar graph functions as display for UPS i utilisation. The signal goes off during this

operations status every 2 seconds.

5.3.4Unit Overload

The load on the UPS should never exceed the specified rated load of the unit. If a unit overload occurs nevertheless (from 105% ± 5% of the specified unit rated load) the fault LED is turned on accompanied with a signal tone (twice per second). The connected loads continue to be supplied for a certain time depending on the level of the overload. However, the connected load must be reduced without delay.

Non-observance of the "Unit overload" condition may cause the total loss of all UPS functions!

Also avoid short-term unit overloads, which may, for example, occur when connecting a laser printer or laser fax machine. Do not connect any household appliances or machine tools to the UPS.

Never connect or switch on any additional loads to the UPS if there is a mains failure, i.e. if the UPS is working in emergency power operation!

As a rule, if there has never been an overload during normal operation, there will not be one during battery operation either.

The signalling of the fault LED in combination with a continuous alarm points out a switching of fault. Follow the instructions in chapter 6.

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