Nortel SONET AccessNode 800A Series Manual page 315

Procedure 12-3 (continued)
Adjusting the high voltage shutdown for replacement rectifiers
Step
9
10
If the HVSD
Occurred at -56.0 V dc
Occurred before -56.0 V dc
Did not occur before -56.0 V dc
was reached
11
AccessNode Series 800A Outside Plant Cabinet Installation 323-3001-210 Issue 1.0
Action
Watch the DVM readings and slowly (see CAUTION 2 on page 12-22) adjust
the FLT potentiometer clockwise to increase the float voltage until either -56.0
V dc is reached or High Voltage Shutdown (HVSD) occurs.
Note 1: The ON/RFA LED illuminates red and the rectifier shuts down.
Record the voltage measurement.
Note 2: If the -56.0 V level cannot be reached, hold the FLT/EQL switch in
the EQL position while adjusting the FLT potentiometer.
Verify the HVSD level:
Continue rectifier adjustments by using Procedure 12-4 on page 12-24.
—end—
Cabinet maintenance operations 12-23
Then
go to step 11.
slowly and slightly adjust the HVSD
potentiometer clockwise to increase the HVSD
limit.
Go to step 7.
slowly and slightly adjust the HVSD
potentiometer counterclockwise to decrease
the HVSD limit.
Go to step 7.