SECTION 2 - OPERATION

Electrical System High/Low Voltage

The Electronic Instrument Control System will notify the operator that the electrical system of the tractor is operating at a voltage too high or too low for normal operation. The following operating conditions will cause the voltage warning system to actuate:

A. The tractor running and more than 15 volts is measured in the electrical system.

B. The tractor running above 1500 RPM and less than 12.5 volts is measured in the electrical system.

C. The tractor running at any speed and less than

11.5volts is measured in the electrical system.

See “Electrical System Troubleshooting” in Section 4 for the proper steps to follow to find a possible electrical system high/low voltage problem. Failure to correct this problem may cause damage to the electrical system. The following description details the reaction of the electronic monitor and audible alarm in the event of electrical system high/low voltage:

With the engine running and any of the above three conditions existing in the electrical system, the lower portion of the monitor will flash “VOLTS” along with the numerical value of the electrical system voltage. The audible alarm will sound a steady tone for four seconds. Even if the rotary select switch is not in the electrical system voltage position, the lower portion of the monitor will still revert to the “VOLTS” display. The upper portion of the monitor will continue to display engine speed. The alternator output warning light on the warning light bar will not illuminate. The electronic monitor is not tied in specifically to alternator output. It is reading total electrical system voltage. The warning light is dedicated to

alternator output and will only illuminate if theFigure 2-113alternator stops charging.

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Buhler 2290, 2335, 2425, 2375, 2360 manual Electrical System High/Low Voltage