12-30 Cabinet maintenance operations
AccessNode 323-3001-210 Issue 1.0
Procedure 12-6 (continued)
Adjusting the load sharing for replacement rectifiers
Step Action
2 Perform the load sharing adjustment steps shown in Table 12-12.
Note:
Table 12-12 lists the RFA LED indications and the associated steps to
coarsely adjust the load sharing of multiple rectifiers.
3 Repeat from step 1 until all rectifiers RFA LED are illuminated GREEN.
4 Examine and compare the display of the ammeters on the rectifiers.
Note:
Nortel Networks recommends that the ammeters of all installed
rectifiers read within 0.1 V dc of each other for proper load sharing.
—continued—
Table 12-12
Rectifier load sharing adjustments
If the RFA LED
indication is
that
And the number
of rectifiers
installed is
Then the indication
means
Then perform
these steps
Only one
RFA LED
illuminated
GREEN
two that the rectifier with the
GREEN RFA LED is
floating slightly too high
slowly and very slightly adjust the FLT
potentiometer of the rectifier that has
the RFA LED illuminated GREEN
counterclockwise until the RFA LEDs
of at least one of the other rectifiers
illuminate GREEN.
Go to step 3.
Only two
RFA LEDs
illuminated
GREEN
three that the rectifier with the
RED RFA LED is floating
slightly too low
slowly and very slightly adjust the FLT
potentiometer of the rectifier that has
the RFA LED illuminated RED
clockwise until the RFA LED
illuminates GREEN.
Go to step 3.
All installed
rectifier RFA
LEDs
illuminated
GREEN
any number of
rectifiers
that the rectifiers are
sharing the load closely
go to step 4.
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