Repair Manual Mobile Generator - Wacker Neuson
Repair Manual Mobile Generator - Wacker Neuson
Repair Manual Mobile Generator - Wacker Neuson
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G 70 ECM/Sensor Troubleshooting<br />
5.6 Calibrating ECM AC Frequency Display<br />
Prerequisites Functioning generator<br />
Procedure Follow the procedure below to calibrate the ECM AC frequency display.<br />
Note: Recalibrate only if your unit is off by more than 5 Hz.<br />
1. Start the generator. Using a tachometer or vibrotach, adjust the engine speed to<br />
1800 rpm or 60 Hz.<br />
2. Open the control panel to gain access to the ECM. Monitor the ECM display<br />
panel as adjustments are made.<br />
WARNING<br />
Electric shock hazard. High voltage exists at the cooling fins of the Automatic Voltage<br />
Regulator (AVR) when the engine is running. Electric shock can cause injury or<br />
death.<br />
Do not touch the AVR when the engine is running.<br />
3. Locate the AC frequency push button. Hold the AC frequency push button in<br />
until the ECM display reads 60 Hz.<br />
4. Set the engine no-load speed to 1850 rpm.<br />
The ECM AC frequency has now been calibrated.<br />
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