58 SEBU8726-03 Operation Section Diesel Particulate Filter Regeneration For a typical view of the wall flow DPF, refer to this Operation and Maintenance Manual, “Sensors and Electrical Components (Aftertreatment)” Disable Regeneration – Press in the bottom of the switch for 2 seconds in order to disable regeneration. Regeneration Indicators Note: The MIDDLE position of the regeneration switch is the default position for automatic regeneration. Five indicators can be affected by the DPF regeneration. these indicators are, Regeneration Active, DPF, Disable Regeneration, Amber, or Yellow Warning Indicator and Red Stop Indicator. Note:
You may return to normal operation at any point during a regeneration. Regeneration Active – This indicator will illuminate during active regeneration. The indicator shows that elevated exhaust temperatures are possible. The indicator will be turned off when regeneration is complete. Regeneration System Warning Indicators Some applications may also have an audible warning installed. DPF – This indicator provides a general indication of the soot load. The indicator is off when the soot load is normal. Disable Regeneration – This indicator is illuminated whenever the disable switch is activated.
Modes of Regeneration Automatic regeneration Manual regeneration Automatic regeneration – Automatic regeneration will occur when the level of soot reaches the trigger point that is set in the ECM. The engine can operate normally during an automatic regeneration. Manual – A manual regeneration is initiated by pressing the regeneration switch. A forced regeneration can only be performed after the soot load has illuminated the DPF indicator . A forced regeneration will only be required if the automatic regeneration has not been completed. This situation can be due to either the disable switch being operated or the duty cycle of the engine. Note:
In some applications the engine safety interlocks will need to be in place before a forced regeneration can occur. Regeneration Switch Note: The regeneration switch is a three position switch. Some OEMs may use other means of activating a forced regeneration such as touch screen interfaces. Force Regeneration – Press in the top of the switch for 2 seconds in order to begin regeneration.