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7.
Check the DC power supply to the equipment as follows:
Using a digital volt meter, test the A and B power feed voltage at the C7 shelf. Verify
that the voltage reads between -48 and -54 VDC.
Install fan trays into the C7 shelves and verify that the fans start running. See
Installing
a C7 Fan Tray
) for instructions.
8.
At each DC distribution panel, switch the 40A battery breakers
ON
to charge the
batteries.
Note:
Distribution panel 1 (right) supports battery strings 1, 2, and 3. Distribution panel
2 (left) supports battery strings 4, 5, and 6 (on breakers 1, 2, and 3).
Testing Batteries
If the batteries are not fully charged, perform this procedure after charging the batteries.
WARNING!
Electrical hazard. Only a qualified technician should perform
these procedures.
To test the batteries
1.
At the DC distribution panel, verify that the battery breakers are
ON
.
2.
Using a digital volt meter, test the battery connection between the negative and positive
battery leads:
a.
Place the red volt meter lead on the red negative (-) battery lead.
b.
Place the black volt meter lead on the black positive (+) battery lead.
c.
Verify that the volt meter reads between -46 and -54 VDC.
d.
If the reading is outside of these limits, check for connection integrity, replace bad
battery cell as applicable, and retest the voltage.
3.
Verify that the C7 fan tray is installed and running.
4.
At the AC load center, set the Main breaker to
OFF
. The fans should continue to run.
5.
At the AC load center, set the Main breaker to
ON
and verify that power restores to the
Valere shelf.
