Nortel Networks 1000M warranty Resetting the main circuit breakers AC power

Page 304 of 456 Powering up the system and initial loading

3Set 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.

4Set the main circuit breaker for Column 0 to ON. The main circuit breaker is located in the rear of the pedestal.

5Set 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.

6Repeat 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.

7When 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 304.

End of Procedure

Resetting the main circuit breakers (AC power)

Follow Procedure 52 to reset the main circuit breakers (AC power).

Procedure 52

Resetting the main circuit breakers (AC power)

1Turn the main circuit breakers in the pedestal of each column OFF again.

2Wait 30 seconds.

3Set the main circuit breakers for NON-CORE columns ON. Leave the Core columns OFF.

NN43021-310 Standard 02.01 December 2007