Kohler — Voltage Calibration using RDC2 Menus
Adjustments · Normal and Emergency source voltage
From a Kohler service manual — check it applies to your exact model before use.
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Before you start
- Hazardous voltage. Only authorized personnel should open the enclosure.
Procedure
- On the RDC2 controller, navigate to the ATS Status menu; navigate to the Normal Voltage display.
- Measure voltage across lugs NL1 and NL2 with a digital voltmeter.
- If the controller display does not match the voltmeter, press Select (voltage flashes).
- Press Up or Down arrow to change the display to match the voltmeter reading.
- Press Select to save the setting.
- For 3-phase models, repeat for NL2-NL3 and NL3-NL1.
- Start the generator set; navigate to the Emergency Voltage display.
- Measure voltage across lugs EL1 and EL2; calibrate as above if needed.
- For 3-phase models, repeat for EL2-EL3 and EL3-EL1.
- Stop the generator set.
Tools required
- Digital voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Kohler 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.