Avaya MCC1 Installation And Upgrades page 239

Power down PPN [75 XE upgrade]
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CAUTION:
Important system data such as BCMS data, records of queued ACD calls, Automatic
Wakeup requests, and Do Not Disturb requests will be lost on power down. You cannot
store to or retrieve data from tape or flash.
CAUTION:
On a DC-powered SCC, do not power down by reseating the power supply as it will trip
the breakers on the DC power cabinet.
NOTE:
The breaker on an MCC is on the bottom front of the cabinet; the breaker on an SCC is on
the back of the cabinet.
1
At the PPN power-distribution unit, set the main circuit breaker to OFF.
2
If the site has a power-failure transfer panel, connect a ground strap to the panel and to a ground
source. Verify that the power-failure stations are working.
Remember to disconnect this strap before reapplying power.
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Disconnect power and grounding and SAT terminal [75 XE upgrade]
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1
Disconnect the cabinet power cords from the rear of each cabinet.
2
Disconnect the coupled bonding conductor.
3
Disconnect the 6AWG cabinet ground wire from the ground bar in the cabinet.
NOTE:
A screwdriver is required to loosen and tighten the bolts that secure the ground wire to the
ground bar.
4
Disconnect the SAT terminal.
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SI Installation and Upgrades
June 2004
System 75 XE to R8si (Blowback)
Task List: System 75 XE to R8si
239