Cummins/Onan BT BCA 400 - 4X U / 3101 E — Isolating the Transfer Switch for Service

For the Cummins/Onan BT BCA 400 - 4X U / 3101 E.

Browse Cummins/Onan generators & specs →

Procedure

1. Turn the Source Select switch to the source that will be connected to the load. If bypassing to the opposite source, the power will be momentarily interrupted.
2. While holding the Source Select switch, move the bypass switch handle to the source to be connected to the load.
3. Release the Source Select switch. The load is now bypassed and the automatic transfer switch may be isolated for service without load interruption.
4. Turn the key operated Drawout Release switch and hold against the tension of the return spring. Turn the drawout crank handle counterclockwise to the limit of its rotation.
5. Release the Drawout Release switch. The lower cabinet door may be opened to service the transfer switch as required.

Source: manual:962-0108 Onan BT 150 - 1000 Operators Manual (6-1983) .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.