Resetting The Main Circuit Breakers (Ac Power) - Nortel 1000M Installation And Commissioning Manual

Page 304 of 456

Resetting the main circuit breakers (AC power)

NN43021-310 Standard 02.01
Powering up the system and initial loading
3 Set the blower unit switch for Column 0 to ON. On initial power-up, the
blower rotates slowly. As the system heats up, the cooling fans will turn
faster.
4 Set the main circuit breaker for Column 0 to ON. The main circuit breaker
is located in the rear of the pedestal.
5 Set the power supply switch (or MPDU circuit breaker) 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.
6 Repeat step 1 through step 5 for each column in the system. Start with
Column 1 and continue until power is turned on in all the columns. Make
sure the green lights in all the module power supplies are lit before
proceeding to the next column.
7 When the green LED lights in all module power supplies and ringing
generators are lit, proceed to "Resetting the main circuit breakers (AC
power)" on page
Follow Procedure 52 to reset the main circuit breakers (AC power).
Procedure 52
Resetting the main circuit breakers (AC power)
1 Turn the main circuit breakers in the pedestal of each column OFF again.
2 Wait 30 seconds.
3 Set the main circuit breakers for NON-CORE columns ON. Leave the
Core columns OFF.
December 2007
304.
End of Procedure