Case CX490D Operator's Manual page 137

MANUAL SCR CLEANING
MANUAL SCR CLEANING is requested by the machine control system and shall be activated by the operator.
During the MANUAL SCR CLEANING, the excavator cannot be operated.
The MANUAL SCR CLEANING process should take around 20 – 25 min.
When the MANUAL SCR CLEANING is requested, the SCR CLEANING icon flashes in orange, a warning alarm
sounds for approximately 2 s and the message PUSH SCR SWITCH TO ACTIVATE is displayed.
To activate the MANUAL SCR CLEANING:
1. Move the machine to a well ventilated area.
2. Set the gate lock lever in central position.
3. Lower the engine speed to low idle.
4. Press the SCR CLEANING button to start MANUAL
SCR CLEANING process.
3 - CONTROLS AND INSTRUMENTS
3-85
7
SMIL14CEX2533AA
8
SMIL14CEX2534AA