ES series — VOLTAGE STABILITY ADJUSTMENT
For the ES series.
Procedure
- If set has a voltage adjust potentiometer (R22) on the meter panel, set pointer halfway between mini- mum and maximum positions.
- With unit running at no load, turn generator voltage potentiometer R26 on VR21 (Figure 5) clockwise to increase output voltage; turn R26 counterclockwise to decrease output voltage. [B] VOLTAGE STABILITY ADJUSTMENT Voltage stability is set at the factory, but if printed circuit board VR21 has been replaced or if damping potentiom- eter R27 has been unnecessarily adjusted, it may be necessary to reset stability. Set stability as follows:
Source: manual:928-0504_Onan_ES_begining_spec_G_Generator__Controls_Service_manual_06-1995.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.