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Home›Repair guides›Install the terminal boards (from new control

Cummins/Onan AT U C D ‘400 - 4X / 11 10 C — Install the terminal boards (from new control

For the Cummins/Onan AT U C D ‘400 - 4X / 11 10 C.

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Procedure

  1. If an area protection circuit or a remote test
  2. Close the control accessory panel and reconnect
  3. Set the time delays following instructions in the
  4. Restore AC line voltage to the automatic transfer
  5. Move the operation selector switch to “RMT” (on

Source: manual:962-0500 Onan AT (spec A-C) Transfer Switch Service Manual (08-1979).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.