825566 2 Mercury SEAL

The temperature of the exhaust gas and the temperature of the exhaust system components can reach up to 650 °C (1202 °F) during regeneration. An unexpected failure of the engine or an unexpected failure of the aftertreatment system may increase temperature at the diesel particulate filter to as high as 900 °C (1652 °F) gas temperature. This may result in fire, burn, or explosion hazards, which may result in personal injury or death. Do not expose flammable material or explosive atmospheres to exhaust gas or to exhaust system components during regeneration.
Modes of Active Regeneration
Stationary RegenerationA stationary regeneration is an active regeneration that is initiated by the operator via the ARD force switch. The vehicle must be stopped in order for a stationary regeneration to occur.Engine Warm-UpThe engine control module (ECM) may command the aftertreatment regeneration device (ARD) to operate shortly after the engine is started in order to increase the temperature of the DPF.The ECM checks the coolant temperature and the temperature of the DPF during the first 60 seconds immediately after the engine is started. The ECM activates the ARD if it is necessary to raise the temperature of the DPF. The ARD operates until the temperature of the DPF has risen to an acceptable value. Then, the ARD turns off. If the cooling fan is controlled by the ECM, the cooling fan is engaged while the ARD is operating.Enhanced Passive PlusEnhanced passive plus controls the soot load during long periods of engine operation at idle. Enhanced passive plus causes the ARD to operate at a low temperature for a set duration. Then, the ARD turns off. This process occurs at periodic intervals that depend on the soot load.The High Exhaust System Temperature Lamp (HEST) does not illuminate during enhanced passive plus due to the lower temperature of the exhaust.Regeneration During Power Take-Off Operation
The "Aftertreatment Regeneration Device PTO Mode Stationary Regeneration" parameter must be programmed to "ENABLED" in order for stationary regenerations to occur during PTO operation. Factory passwords are required in order to change the value of this parameter.A stationary regeneration occurs during PTO operation when all of the following conditions are met:
"Level 1" soot load or higher
Coolant temperature is greater than 60 °C (140 °F).
Exhaust temperature is greater than 100 °C (212 °F).
The clutch pedal is disengaged.
The transmission is in neutral.
The parking brake is on.
The PTO clutch is engaged.
The ARD force switch is properly activated.The duration of the stationary regeneration during PTO operation depends on engine speed and other operating conditions.Engine SpeedStationary regeneration during PTO operation can occur at any engine speed between low idle and the top engine limit. Stationary regeneration occurs at the programmed speed.Operation of the Cooling Fan During Stationary RegenerationIf the ECM is controlling the cooling fan, the cooling fan is engaged during stationary regeneration.Lamps
Five dash lamps may be affected by the CRS.
Amber Warning Lamp - This lamp indicates that the soot load has increased. Active regeneration or stationary regeneration is required.
DPF Lamp - This lamp provides a general indication of the soot load. The lamp is off when the soot load is low. This lamp is on when an active regeneration or stationary regeneration is required in order to reduce the soot load. The lamp flashes when the soot load has increased to a very high level. The lamp also flashes whenever the ARD disable switch is activated.
High Exhaust System Temperature Lamp (HEST) - This lamp is illuminated when the exhaust temperature is greater than 450 °C (842 °F) and the vehicle speed is less than 8 km/h (5 mph).
Red Stop Lamp - This lamp indicates that the soot load is very high. ARD Lamp - This lamp is illuminated whenever the ARD disable switch is activated.Switch Inputs for Manual Control of the Engine Aftertreatment System
The engine aftertreatment system may not require input from the operator in order to work correctly. Operator input may be necessary under certain operating conditions. A flashing DPF lamp notifies the operator when intervention is necessary. The switches are optional. A vehicle may be retrofitted with the switches.Two switch inputs are provided. The inputs can be provided by a single switch or by two switches.Single Switch
Top Position
Illustration 1 g01572074
This figure illustrates the position of the single switch while a stationary regeneration is being initiated.
The top position for a single switch initiates a stationary regeneration when all of the following conditions are met:
The soot load is level one or higher. The DPF lamp is illuminated or the DPF lamp is flashing.
The coolant temperature is greater than 60 °C (140 °F).
The exhaust temperature is greater than 100 °C (212 °F).
The air inlet shutoff is not activated.
The clutch is disengaged.
The brake pedal is released.
The transmission is in neutral.
The throttle position is less than seven percent.
The parking brake is engaged.
The vehicle speed is zero mph.
The power take-off switch is in the OFF position and stationary regeneration is not allowed during operation of the PTO.Depress the switch for at least two seconds in order to initiate a stationary regeneration if the switch is wired directly to the ECM. Refer to the owner's manual in order to determine the operation of this position if the switch is wired to a J1939 device.If all of the conditions are met, the DPF lamp turns off. Note: The engine speed increases to 1400 RPM on C13 and C15 Engines. The engine speed increases to 1200 RPM on C7 and C9 Engines. If the ECM is controlling the cooling fan, the cooling fan is enabled during the stationary regeneration. Stationary regeneration begins.The HEST lamp illum