LEGRAND DAKER DK Plus Series, Installation Manual

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4.3 Start-up procedure
4.3.1 Normal mode
1. Make sure the input breaker is not tripped. If it is, reset it.
2. Plug the UPS input cable into the mains socket.
3. The UPS turns to the standby mode in 5 seconds. The green LED lights up if the input
voltage is within the admittable range and the fans spin. The battery charger is active. In this
condition the loads are not powered. The display looks like the following figure:
4. Press and hold it until the buzzer sounds twice.
The green LEDs light up. The display looks like the following figure:
5. The start-up procedure is completed. Make sure that the batteries are fully charged or that the
UPS has been plugged to the wall receptacle at least for 4 hours before connecting the loads.
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 figure:
3. Press again and hold it until the buzzer sounds twice. If the second key confirmation is not
completed within 10 seconds, the UPS does not perform the cold start and shuts off.
4 Operation