Charles Machine Works Ditch Witch RT125, Operator'S Manual

Page: 158 / 231

RT125 Operator’s Manual
Service - 157
Recommended Lubricants/Service Key
Exhaust Cleaning
This engine has a Selective Catalytic Reduction (SCR) system that uses a small amount of DEF to convert
NOx emissions in the exhaust into nitrogen and water. The SCR system may require periodic cleaning.
Sensors in the engine monitor the exhaust status. When a cleaning cycle is needed, the system will
create the following pop-up message: “Exhaust cleaning needed soon. Failure to clean will result in
power loss. Park unit away from combustible materials, set engine to low throttle, engage parking
brake, and activate cleaning process through the main menu.” The exhaust cleaning icon will also flash. An
operator may choose to hide and ignore this message. If so, the icon will continue to flash and the
message will reappear after fifteen minutes.
If the operator continues to ignore the cleaning request, a second pop-up message will
appear with the following message: “Exhaust cleaning needed. Failure to clean will result in
severe power loss and engine service. Engine power reduced by 25%. Park unit away from
combustible materials, set engine to low throttle, engage parking brake, and activate cleaning process
through the main menu.” The exhaust cleaning icon will flash and the engine caution icon will appear. An
operator may choose to hide and ignore this message. If so, the icons will continue to display and the
message will reappear after five minutes.
If the operator continues to ignore the cleaning request, a third pop-up message will appear
with the following message: “Exhaust service required. Engine derating activated. Exhaust
cleaning request ignored. Contact Deutz
®
service.” The exhaust cleaning and the engine
stop icons will flash. An operator may choose to hide and ignore this message. If so, the icons will continue
to display and the message will reappear after one minute.
Once the operator starts the exhaust cleaning cycle, adjusting the throttle or releasing the parking brake
will terminate the cycle. A typical cycle will take approximately 35 minutes. A pop-up message will display
the remaining time in the cycle. The high exhaust temperature icon may also light.
The frequency of exhaust cleaning is dependent upon working conditions. In general, operating in
hotter conditions and higher loads with lengthen the time between cleaning cycles. The engine
monitors the elapsed time since the previous cleaning and will request a cleaning when that time
reaches 1050 hours.
IMPORTANT: See “Exhaust Cleaning” on page 50.
!