Kohler Series S340 — Overvoltage Card Adjustment

Adjustments

For the Kohler Series S340, from the Kohler service manual.

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Procedure

1. Remove cap nuts from adjustment knobs.
2. Set Drop-out to maximum counterclockwise and Pick-up to maximum counterclockwise.
3. Set line voltage to pull-in value desired (normally 105%); LED is OFF.
4. Rotate Pick-up clockwise until LED comes ON.
5. Rotate Drop-out maximum clockwise.
6. Set line voltage to Drop-out value desired (normally 115%).
7. Rotate Drop-out counterclockwise until LED is OFF.
8. Drop line voltage to pull-in desired value; LED should come ON. Increase line voltage to desired Drop-out value; LED should go OFF.
9. Reinstall cap nuts to secure settings.

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.

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