Kohler M340 — Voltage Sensing Calibration (Index 12)
Adjustments · M340 controller
For the Kohler M340, from the Kohler service manual.
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Before you start
- Unit starts without notice
Procedure
- De-energize or disconnect the emergency source; open the emergency breaker.
- Enter index 12 for Calibration.
- Press YES at E-AUTO-ZERO to zero the emergency voltmeter.
- Connect a 1%-accurate or better voltmeter to the lugs.
- Close the emergency breaker or start the generator set.
- Enter the voltmeter reading for each phase.
- Open normal-source breaker, place switch in emergency position, zero and calibrate normal voltmeter.
Tools required
- 1%-accurate or better voltmeter Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Meter calibration is factory set
- Calibration normally only needed if system voltage changes or control replaced
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.