COVER AS 5480189 - Caterpillar

Regeneration
Regeneration is the removal of soot from the Diesel Particulate Filter (DPF). The Aftertreatment Regeneration Device (ARD) is used to regenerate the DPF. The DPF traps both soot and ash. The ash is removed through a manual cleaning process. Refer to Operation and Maintenance Manual, "Diesel Particulate Filter - Clean" for more information on the service of the DPF. Types of Regeneration
Passive Regeneration - Is a chemical reaction within the system and the engine will create enough heat in order to regenerate the DPF.Active Regeneration - The engine does not create enough heat in order to regenerate the DPF. The ARD must be used to create the heat necessary to regenerate the DPF.Lamps
Five dash lamps can be affected by the DPF regeneration. Also, the horn can be used in order to alert the operator.
High Exhaust System Temperature Lamp (HEST) - The lamp is illuminated when the ARD is activated and the exhaust temperature is greater than 450 °C (842 °F).
DPF Lamp - This lamp provides a general indication of the soot load. The lamp is off when the soot load is normal. The lamp will operate at level 2. Note: In some situations, the DPF lamp may stay illuminated when the soot load is below 90%. The illuminated DPF lamp indicates that a complete regeneration has not been performed. A complete regeneration is when the soot level is reduced to 0%. If the DPF lamp stays illuminated, perform a regeneration without interruption until the soot level is reduced to 0%. A complete regeneration will reset the DPF lamp.Modes of Regeneration
Enhanced automatic regeneration
Forced RegenerationEnhanced automatic regeneration is controlled by the engine ECM. During this regeneration the operator will see the high exhaust system temperature lamp (HEST) illuminated.Enhanced automatic regeneration - This mode of DPF regeneration allows for regeneration to take place at higher engine rpm and higher engine loads. In order for enhanced automatic regenerations to occur, the following conditions must be met:
Soot level must be between level 2 and level 3 on the soot level monitor (if equipped).
Engine speed must be greater than 1400 rpm.
Minimum engine idle speed input must be set. Setting the input will not allow engine speed to fall below 1000 rpm during enhanced automatic regeneration. If minimum low idle speed input is not available, regeneration will stop if engine speed drops below 1000 rpm.
Refer to the OEM for the applications interlocks required to be engaged before regeneration can take place. Forced regeneration - A forced regeneration can be initiated by moving the regeneration switch to the upward position. A forced regeneration is allowed during normal operation up to level 3. A forced regeneration can be performed in the enhanced automatic regeneration window.Regeneration Switch
Note: Move the switch upward for at least 2 seconds, and no more than 60 seconds to force regeneration. An indicator light on the switch will become active showing that the regeneration is active. The HEST lamp will become active showing that the regeneration is active. The high exhaust temperature indicator will