990-5910G-001

Shut Down the UPS System into Maintenance Bypass Operation

NOTE: Only operate a disconnect device when the associated disconnect device indicator lamp is illuminated.
  1. Tap Control > Guided sequences > Shut down UPS system or Control > Guided sequences > Shut down a UPS in a parallel system, and follow the steps which appear on the display.
  2. Generic shutdown procedure for a UPS system with external maintenance bypass disconnect device MBB:
    NOTE: The following are generic shutdown procedures. Always follow the steps of the Guided sequences which are specific to your system
    1. Select Control > Operation mode > Transfer to bypass operation if possible.
    2. Close the maintenance bypass disconnect device MBB.
    3. Open the system isolation disconnect device SIB (if present).
    4. Open the unit output disconnect device UOB.
    5. Select Control > Inverter > Inverter off or press the inverter OFF button (hold for five seconds) on the controller section.
    6. Open the static switch input disconnect device SSIB (if present).
    7. Open the battery disconnect device(s).
    8. Open the unit input disconnect device UIB.
    9. Repeat step d to h for other UPSs in a parallel system.
  3. Generic shutdown procedure for a UPS system using the internal maintenance disconnect device IMB (no MBB present):
    NOTE: The following are generic shutdown procedures. Always follow the steps of the Guided sequences which are specific to your system
    1. Select Control > Operation mode > Transfer to bypass operation if possible.
    2. Close the internal maintenance disconnect device IMB.
    3. Open the battery disconnect device(s).
    4. Repeat step c for other UPS in a simplified 1+1 parallel system.
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