McCONNEL MULTIDRIVEM380‐4&M420‐4
62
SRC SYSTEM CLEANING
The SRC SYSTEM CLEANING indication is for the status of the aftertreatment SCR
system cleaning events.
When the SCR System cleaning indication appears on the MCU the
aftertreatment SCR system required to be cleaned at the next
opportunity. This can be accomplished by:
1. Changing to a more challenging duty cycle, such as highway driving, for at least 20
minutes.
2. Performing a stationary SCR/ exhaust system cleaning
A flashing SCR SYSTEM CLEANING symbol indicates the status of a non-mission
(stationary) SCR / exhaust system cleaning when the SCR System Cleaning Start switch
has been activated.
When this indications flashing, the operator should:
1. Keep the exhaust outlet away from people and anything combustible, melt or
explode.
2. Nothing should be within 0.6 meter of the exhaust outlet.
3. Nothing that can burn, melt of explode within 1.5 meter (such as petrol, straw,
wood, paper, plastic, fabric, gas container or hydraulic lines). paper,
4. In an emergency, turn the engine off to stop the flow of exhaust.
A solid SCR SYSTEM CLEANING indication combined with a WARNING or CHECK
ENGINE indicates that the after-treatment SCR needs to be cleaned immediately. Engine
power will be reduced automatically if action is NOT taken.
When these warnings indicate, a stationary SCR/exhaust system cleaning is required.
NOTE that if this cleaning is not performed the STOP ENGINE will indicate and the engine
will require specialist intervention before it can operate.
HIGH EXHAUST SYSTEM TEMPERATURE warning
WARNING
When this warning is indicated, the exhaust gas temperature could reach 800
0
C, hot
enough to melt and ignite common materials and burn people.
This warning could show during a normal engine operation or during SCR/exhaust system
cleaning. Precautions as above relating to the proximity to potentially inflammable
materials as outlined above must be taken.
Check parameters in the MD configuration.
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