Cummins/Onan 15.0 HA / 7.5 HA — Line Contactor Pull-in Voltage Adjustment
Adjustments
For the Cummins/Onan 15.0 HA / 7.5 HA, from the Cummins/Onan service manual.
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Procedure
- An adjustable resistor in series with the line contactor coil adjusts the contactor pull-in voltage.
- Do not adjust this resistor unless the line contactor will not pull in when the generator set starts.
- Or if it pulls in at too low a voltage causing the generator set to cycle.
Specs & values
- Factory adjusted to pull in when the generator voltage reaches 102 to 108 volts (204 to 216 volts on 240-volt models).
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.