4.3.2 Cold start
1. Make sure the internal batteries or the external battery cabinets are connected to the UPS.
2. Press and hold it until the buzzer sounds twice. Then release the key. The display looks like
the following gure:
3. Press again and hold it until the buzzer sounds twice. If the second key conrmation is not
completed within 10 seconds, the UPS does not perform the cold start and shuts o.
4. Few seconds after the second key conrmation, the UPS turns on in stored energy mode and
the loads are powered. The red alarm LED lights up. It is audible an intermittent sound
alarm. The display looks like the following gure:
5. The start-up procedure is completed. The loads are powered till the end of the backup time. If
later the input line is available, the UPS turns to the set operating mode.
INDICATION
The output frequency corresponds to the input frequency before the UPS was shutdown. The de-
fault value is 50 Hz; however if before the input frequency was 60 Hz, then the output frequency
after the cold start will be 60 Hz.
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