Nortel DMS-100 Series Maintenance Manual page 159

7 If the voltage equals or is less than OPM_VOLT_TST_CHG, the string
can still accept a charge. BSY and RTS the BCCDVR to return the
battery string pair to service.
If O/C test marks the same string failed within the next two months,
proceed directly to the OPAC site tests.
Procedure that follows failure of discharge test at the MAP terminal
1 Disable the AUDIT from the PES MAP level.
2 Determine which battery string voltage tests below
OPM_VOLT_TST_DIS using the PES117 log report. If the system
marks strings 1 and 5 failed, determine if string 1, 5, or both caused the
alarm. For OPACs, the default for OPM_VOLT_TST_DIS = –495 or
–49.5 V dc.
3 O/C the failed battery string pair and proceed with the OPAC site tests.
Procedure that follows failure of a post–charge test at the MAP terminal
1 Disable the AUDIT from the PES MAP level.
2 Determine which battery string voltage tests below
OPM_VOLT_TST_CHG using the PES117 log report. If the system
marks strings 1 and 5 failed, determine if string 1, 5, or both caused the
alarm.
For OPACs, the default for OPM_VOLT_TST_CHG = –509 or –50.9 V
dc for Eagle-Picher batteries.
3 From the PES MAP level place the failed battery string pair on the
charge bus for 6 h.
4 O/C the failed battery string pair for a minimum of 6 h.
5 Use the PES MAP level MEASURE command to measure the voltage of
the failed battery string pair.
6 If the voltage is less negative than OPM_VOLT_TST_CHG, leave the
battery string pair open circuit and proceed with OPAC site tests.
7 If the voltage is equal to or more negative than OPM_VOLT_TST_CHG,
the string can accept a charge. Busy and RTS the BCCDVR to return the
battery string pair to service.
If the post-charge test marks the same string failed within the next two
months, proceed directly to OPAC site tests.
DMS-100 Family OPAC Maintenance Manual XPM12 and up
OPAC maintenance overview 2-65