Procedure 12-4 Setting The Equalize Voltage Level - Nortel SONET AccessNode 800A Series Manual

Procedure 12-4 (continued)
Setting the equalize voltage level
Action
Step
1
2
3
4
5
6
7
AccessNode Series 800A Outside Plant Cabinet Installation 323-3001-210 Issue 1.0
Action
CAUTION
Battery stabilization requirements
When increasing or decreasing the float voltage on a
working system with batteries connected, always proceed
very slowly. Only turn the float potentiometer 1/4 turn at any
one time then allow the batteries to stabilize before
adjusting the FLT potentiometer again. The batteries
require a period of time to stabilize to the new voltage and
current levels.
Turn the FLT POT counterclockwise to reduce the voltage (about two turns).
Adjust the EQL POT counterclockwise two full turns.
Reset the ac breaker to the ON position.
Hold the FLT/EQL momentary switch to EQL position.
Watch the DVM readings and slowly adjust the FLT potentiometer clockwise
to increase the EQL voltage to -55.5 V dc.
Release the FLT/EQL switch.
Continue rectifier replacement procedures with Procedure 12-5 on page
12-26.
—end—
Cabinet maintenance operations 12-25