Cummins/Onan — Day Tank Controller 240 VAC to 120 VAC Conversion
Installation · Day tank pump control
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DQAD, Cummins/Onan DQAE, Cummins/Onan DQAF
Before you start
- Diesel fuel is highly combustible. Installation and service must be performed by qualified persons in accordance with applicable codes.
Procedure
- Remove the two jumpers between terminals TB1-6 and TB1-7.
- Connect one jumper between TB1-5 and TB1-6 and the other between TB1-7 and TB1-8.
- Move selector switch S103 on the control PCB to the up position for 120V.
- If equipped with a transformer, remove jumpers between H2 and H3; connect one between H1 and H3 and one between H2 and H4.
- Attach a tag to the control box indicating the supply voltage.
Specs & values
- Control can be powered by 120 VAC or 240 VAC; factory set for 240 VAC
Full service-parts list: Cummins/Onan DQAD →, Cummins/Onan DQAE →, Cummins/Onan DQAF →
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.