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Powering up the system and initial loading
Procedure 47
Turning DC power ON
1
Connect each DC rectifier to its associated AC outlet and set the breakers
in the AC power panel to ON.
2
Turn the rectifiers ON one at a time. Wait 10 seconds between each
rectifier.
CAUTION — Service Interruption
System Failure
If a problem occurs in any of the following steps, resolve
that problem before continuing.
Perform the following tasks for each column
Note: Power up the Core columns last.
3
On the DC power source for each column, replace the distribution fuses
or set the distribution breakers to ON. Do the Core columns last.
4
Set the blower unit breaker switch ON (the far left breaker in the rear of
the pedestal).
5
Set the blower unit switch in the front of the pedestal to ON. Verify that the
fan is running. On initial power-up, the blower rotates slowly. As the
system heats up, the cooling fans turn faster.
6
Set the power supply switch in each module to ON. The green light will
turn on after a few seconds.
Note: If the module is equipped with a ringing generator, set the breakers
or switches for both the power supply and the ringing generator to ON.
The green LED on a ringing generator normally takes up to 90 seconds to
light.
7
Repeat step 1 through step 5 for each column in the system. Start with
Column 2 and continue until power is turned on in all the columns. Do the
Core columns last.
IMPORTANT!
Large System Installation and Commissioning
Page 291 of 436
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