U L T R A F L E X H D P D U U S E R M A N U A L
2.1.5
Fan breaker CB10
Turn on fan breaker CB10 located on the rear of the PDU, refer to
. Without this breaker turned on,
the cabinet fans cannot power up. Refer to
for a view of CB10. Note: Breaker CB10 shown below
is in the off position.
Figure 10 – Detail of Fan breaker CB10
2.1.6
48V Power Supply AC input breaker CB9
Turn the power supply AC input breaker CB9 located on the front panel of the PDU, refer to
. Once
the breaker is turned on the AC input will be fed into the power supplies. Although the DC output of the
power supplies will be off, you may hear a “clicking” noise. This noise is normal and is a result of the
magnetics in the supplies operating in a no-load condition. Refer to
for a view of CB9. Note: Breaker
CB9 shown below is in the off position.
Figure 11 – Detail of Power supply AC input breaker CB9
708401 Rev B
Page 16 of 38
Fan breaker
CB10
Power supply AC
input breaker
CB9
