SWITCH AS-ROTARY 1035678 - Caterpillar

Proper operation and maintenance are key factors in obtaining the maximum life and economy of the engine. If the directions in the Operation and Maintenance Manual are followed, costs can be minimized and engine service life can be maximized.The time that is needed for the engine to reach normal operating temperature can be less than the time taken for a walk-around inspection of the engine.The engine can be operated at the rated rpm after the engine is started and after the engine reaches operating temperature. The engine will reach normal operating temperature sooner during a low engine speed (rpm) and during a low-power demand. This procedure is more effective than idling the engine at no load. The engine should reach operating temperature in a few minutes.Avoid excess idling. Excessive idling causes carbon buildup, engine slobber and soot loading of the Diesel Particulate Filter (DPF). This excess idling is harmful to the engine.Gauge readings should be observed and the data should be recorded frequently while the engine is operating. Comparing the data over time will help to determine normal readings for each gauge. Comparing data over time will also help detect abnormal operating developments. Significant changes in the readings should be investigated.Reduction of Particulate Emissions
The Diesel Particulate Filter (DPF) and the Aftertreatment Regeneration Device (ARD) work together in order to reduce particulate emissions. The DPF collects the soot and any ash that is produced by the combustion in the engine. During regeneration, the soot is converted into a gas which is released into the atmosphere. The Ash remains in the DPF until the ash is cleaned out of the DPF.The temperature of the DPF must be above a particular value in order for regeneration to occur. The exhaust gas provides heat for the regeneration process. There are two types of regeneration:Passive Regeneration - The engine conditions are sufficient for regeneration. The rate of regeneration is much lower than active regeneration. Active Regeneration - The engine duty cycle conditions are not sufficient for passive regeneration to occur.The operator will receive information on the status of the ARD from dash lamps and the driver will be able to request a regeneration by using a switch. Refer to this Operation and Maintenance Manual, "Monitoring System" for more information.Engine Operation and Active Regeneration
Active regeneration can be performed at any engine speed.