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Start-up and Shutdown Procedure
990-1378
Installation Guide APC BC300 Series 10kW 208/450/480V UPS 39
6.2 Shutdown Procedure
This section contains information on how to shut down the UPS from normal operation mode.
This procedure applies to units with an APC-supplied Maintenance Bypass Panel.
1. If you have shut the loads down: Move on to step 2.
If the loads are to remain powered: Program the unit into static bypass operation:
a. Press to access the user parameters.
b. Press the or key until the display shows “Bypass operation: OFF”.
c. Press to turn static bypass operation on. The display should show “Bypass
operation”.
d. Set the UPS bypass switch to “BYPASS”.
2. Press the red “OFF” button located inside the UPS front door.
3. Set the UPS AC disconnect switch to “OFF”.
4. If the UPS has external batteries:
a. Switch the battery breaker “OFF”.
b. Hold the pre-charge/discharge switch in the “discharge” position until the LED turns
off.
5. If the UPS has internal batteries:
a. Open the DC fuse holder and remove the DC fuses (F001, F002, F003). Store the fuses
in a safe place.
b. Open the UPS front door and press the green “ON” button to discharge the capacitors.
To restart the unit, see the section “Start-up from Maintenance Bypass” above.
6. (Optional) If the loads are not to be powered, turn off all AC power sources to the UPS and
Maintenance Bypass Panel.
WARNING
After shutting down the unit, wait at least five minutes before removing any access panels or
covers. Access panels should be removed by authorized service personnel only.
After the UPS has been shut down, the unit may still contain high voltages.
TEST BEFORE YOU TOUCH!
Before continuing, read the warnings on the inside front cover of this manual.