12-14 Cabinet maintenance operations
AccessNode 323-3001-210 Issue 1.0
Procedure 12-2 (continued)
Replacing the rectifier
—continued—
CAUTION 1
Critical circuit breaker ON/OFF sequences
Perform the steps in the order shown because the sequence
of turning the breakers on and off is critical.
CAUTION 2
Output voltage requirements
If this is a new installation, the dc voltage output level from
each rectifier module must be tested and adjusted as per
Nortel Networks recommended float voltages for the battery
manufacturers listed below.
Eagle-Picher 6V: -54.70 ± 0.10 V dc
Gates 12V: -55.00 ± 0.10 V dc
Yuasa 12V: -54.00 ± 0.10 V dc
Note: These ranges are subject to change without notice. For
other battery manufacturers, refer to CAUTION 3.
CAUTION 3
Input voltage requirements
The AccessNode input voltage specifications require that the
dc input to the BIP shall not exceed -56.0 V dc. Battery float,
equalize and high voltage shutdown levels must be set below
this maximum regardless of the type of batteries installed.
CAUTION 4
Power loss hazard
Because there are circuit breakers on the ac service panel,
rectifier modules, and the battery breaker panel (BBP), use
caution before switching a circuit breaker. Make sure you are
switching the correct one.
CAUTION 5
Fire hazard
Remove all paper and any other combustible materials from
inside the cabinet before the cabinet is powered up. Failure
to comply with this warning could result in a fire.
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