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Cummins/Onan — Service Procedure

For these Cummins/Onan models: OT III Transfer Switch, OT-A-4060A, OT-C-10050C.

Applies to: Cummins Onan Ot Iii Transfer Switch, Cummins Onan Ot A 4060A, Cummins Onan Ot C 10050C

Procedure

  1. 4. Sense the return of the Normal power source.
  2. 5. Retransfer the load to the Normal power

Source: manual:962-0512 Onan OT III (spec G-H) 40 to 1000 Amp Transfer Switch Service manual (06-2001).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.