990-91406D-001

Remove Jumper Busbars in a 50-80 kVA 3:1 220 VDC UPSs with External Charger

NOTE: This procedure is only applicable to 50-80 kVA 3:1 220 VDC UPSs with an external charger.
  1. Loosen the screws and open the two doors in the top of the UPS.
  2. Disconnect the signal cable from the control board.
  3. Loosen the two screws and flip down the control board panel.
  4. Remove the indicated busbar.
  5. Remove the two indicated jumper busbars and refasten the screws (torque to 5 Nm).
  6. Reinstall the busbar removed in step 4.
  7. Flip the control board panel back to original position and reconnect the signal cable.
  8. Close the two doors and fasten the screws.
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