Cummins/Onan — Adding Module in Control Accessory Panel
Installation
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Before you start
- Be sure to remove AC line voltage from the automatic transfer switch and disable the generator set. Otherwise, the automatic transfer switch presents a serious shock hazard.
Procedure
- Open the cabinet door.
- Move operation selector switch to STOP and disconnect starting battery.
- Remove AC line voltage from the automatic transfer switch.
- Remove the twist-lock disconnect plug and open control accessory panel.
- Install keying plug(s), #332-2114 for begin.Spec C or #332-1276 for Spec A or B AT, in the slot(s) of the printed circuit board receptacle as needed.
- Insert the new module in the control accessory panel.
- Restore AC line voltage to the automatic transfer switch.
- Close the control accessory panel and reconnect the disconnect plug.
- Move the operation selector switch to RMT or NORMAL, whichever applies.
- Close cabinet door.
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.