990-5910D-001

Shut Down into Maintenance Bypass Operation for Single UPS System with Kirk Key Installed

NOTE: Only operate a breaker when the associated breaker indicator lamp is illuminated.
  1. Select Control > Operation mode > Transfer to bypass operation.
  2. Hold down the SKRU push-button, turn and remove key A from the SKRU interlock.
  3. Insert key A in the interlock for the maintenance bypass breaker MBB and turn the key.
  4. Close the maintenance bypass breaker MBB.
  5. Open the unit output breaker UOB.
  6. Turn and remove key B from the interlock for the unit output breaker UOB.
  7. Insert key B in the SKRU interlock and turn the key to the locked position.
  8. Select Control > Inverter > Inverter off.
  9. Open the static switch input breaker SSIB (if present).
  10. Open the battery breaker(s).
  11. Open the unit input breaker UIB.
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