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AAU3940
Hardware Maintenance Guide
Figure 3-1 Process of powering on an AAU
l The normal input voltage of an AAU is 220 V AC and should range from 200 V AC to 240 V AC.
l When an AAU is working properly, the RUN indicator is blinking (on for 1s and off for 1s), and the ALM
3.2 Powering off an AAU
An AAU can be powered off in two ways: normal power-off and emergency power-off. You
must power off the AAU in a normal situation such as moving the equipment or anticipating a
territorial blackout. You must also power off the AAU in an emergency such as a fire, smoke,
or water damage.
Procedure
l
l
Issue 01 (2015-01-15)
NOTE
indicator is steady off. For details about indicators, see AAU3940 Hardware Description.
Normal power-off
1.
Set the corresponding circuit breaker on the power equipment for the AAU to OFF.
Emergency power-off
NOTICE
Emergency power-off may damage the AAU. Therefore, do not perform an emergency
power-off in normal cases.
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3 Powering On and Powering Off an AAU
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