Buhler 2360, 2335, 2425, 2290, 2375 manual Operation

SECTION 2 - OPERATION

If the Operator does not press the acknowledge/reset button during the pre--alarm sequence, the EICS will progress to the full critical alarm stage. The EICS will display a constant “STOP” message in the upper portion of the display and the lower portion will display all symbols related to the rotary select switch. The audible alarm will become a steady, solid tone. If the automatic shutdown system is enabled on the tractor, the engine will shut off automatically. If the automatic shutdown system is not enabled, the tractor will continue to run. See “Automatic Shutdown Conversion” in the Operator’s manual for information on how to enable and disable this system. Pressing the acknowledge/reset button will not clear the display or audible alarm after the EICS has reached the critical alarm stage.

ATTENTION: If the tractor electrical system is not converted to the automatic shut down mode, the engine will continue to run while not receiving adequate amounts of lubrication. Serious engine damage can result from running the engine in this condition. It is imperative that the low engine oil pressure condition be investigated as soon as possible so as to avoid serious engine damage

Whether the Operator chooses to stop the EICS in the pre--alarm stage, or allow it to progress to the critical alarm stage (not converted to automatic shut down) the module on the engine will be simultaneously reacting to the low engine oil pressure signal it is receiving from its own sending unit circuit.

NOTE: If the Operator allows the EICS to progress to the critical alarm stage and has the tractor converted to automatic shut down, the engine will shut off without the module causing a derate to the engine. There will not be enough time for the module to react from the pre--alarm sequence to the critical alarm sequence and shut down.

The module will sense the low oil pressure condition and begin an engine speed/engine power derate. The module will lower the engine rpm to a preset level (1400 rpm) allowing no acceleration of the engine above that level AND lower the horsepower output of the engine a preset amount (20% of gross horsepower) as long as the low engine oil pressure condition exists.

Both the speed and engine power derate will be gradual and simultaneous. Elapsed time of the speed and power derate from maximum horsepower and 2100 engine rpm to the 1400 rpm and 20% reduced horsepower output level will be approximately 25 seconds (approximately 40 rpm/second, and 1% horsepower/second). This reduced speed and power output mode will allow the Operator to move the tractor from an undesirable location and make repairs.

The Operator cannot cancel or interrupt the derate sequence from occurring on the engine. The module does not recognize activation of, nor is it tied into the EICS acknowledge/reset button on the dash of the tractor.

If the tractor is shut down and then restarted, and the alarm condition still exists, (low engine oil pressure) the EICS and module will repeat the alarm and derate sequence. If the tractor is restarted and the alarm condition has been corrected, the tractor will return to normal operation. If the tractor is not shut down, and the alarm condition is corrected, the tractor will return to normal operation without having to shut it off and restart it.

2-76