Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 96

COMPUTER CABINET POWER DOWN PROCEDURE
1. Set cabinet power control to LOCAL then press CABINET POWER OFF switch at
front of the power cabinet.
2. Set BATTERY DISCONNECT circuit breaker to OFF (down) position.
3. Set AC TO DC CONVERTER INPUT circuit breaker to OFF position.
4. Set 50/60 Hz DISCONNECT circuit breaker to OFF position.
WARNING
Steps 5 through 8 are necessary as safety
precautions when you work inside the power
cabinet because of high voltage from power
source and battery packs.
5. Open the power control panel cover using an Allen wrench to loosen the
two holding screws.
6. Unplug power input to computer cabinet from the 50/60-Hz connector or
50/60 Hz and 400-Hz connectors depending on the power option.
7. Wait for five minutes to allow capacitors to discharge.
8. Disconnect three cable connectors to the battery packs, if installed.
COMPUTER CABINET POWER UP PROCEDURE
1. Connect three cable connectors to the battery packs, if installed.
2. Plug power input connectors to computer cabinet.
3.
Close the power control panel cover by tightening two holding screws.
4. Reset 50/60 Hz DISCONNECT circuit breaker to ON position.
5. Reset AC to DC CONVERTER INPUT circuit breaker to ON position.
6. Reset BATTERY DISCONNECT circuit breaker to ON position.
7.
Press FAULTS RESET button if PUSH RESET LED is lit.
8.
Press CABINET POWER ON switch.
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