Cummins/Onan — Fuel Pump Control AC Connections
Installation
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, Cummins/Onan QSM11 engine
Procedure
- To convert the day tank controller from 240 VAC to 120 VAC, remove the two jumpers between terminals TB1-6 and TB1-7 in the control box. Connect one between TB1-5 and TB1-6 and the other between TB1-7
- Move selector switch S103 on the control PCB to the up position for 120V.
- If the control is equipped with a transformer, remove the two jumpers between terminals H2 and H3. Connect one between H1 and H3 and the other between H2 and H4.
- To convert the day tank controller from 120 VAC to 240 VAC, remove the jumpers between TB1-5 and TB1-6, and TB1-7 and TB1-8. Connect the two jumpers between TB1-6 and TB1-7.
- Move selector switch S103 on the control PCB to the down position for 240 VAC.
- If the control is equipped with a transformer, remove the jumpers between H1 and H3, and H2 and H4. Connect the two jumpers between H2 and H3.
- Attach a tag to the control box indicating the supply voltage.
- Terminals TB1-8 and TB1-5 are available for connection of a 120 or 240 VAC electric fuel shutoff valve rated not more than 0.5 amps.
Specs & values
- 120 VAC
- 240 VAC
- 0.5 amps
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.