Hyundai 250D-9 Manual page 53

(13) SCR (Selective Catalytic Reduction) CLEANING WARNING LAMP
50D93CD52
Condition
SCR needs to be cleaned
SCR needs to be cleaned
immediately
Stationary SCR cleaning status
DEF level initial warning
DEF level critical warning
DEF level initial warning
DEF level secondary derate
warning
DEF level final derate warning
Manual SCR cleaning method
2
1
OFF
SCR warning
HEST warning
lamp lamp
ON
SCR warning
HEST warning
lamp lamp
OFF
This lamp lights ON when the SCR cleaning is needed and lamp
flashes when manual SCR cleaning is activeted as table below.
Warning lamp
SCR DEF
cleaning Low
lamp Lamp
On -
On -
Flash -
- On
- Flash
- Flash
- Flash
- Flash
Manual SCR cleaning applies if the machine is in a fireproof
area and there is no plan to turn off the machine during the
SCR cleaning.
Stop and park the machine.
Push the switch to position
cleaning.
Refer to the page 3-35 for the switch operation.
The engine speed may increase during SCR cleaning and it
will take approximately 20~60 minutes depending on condition.
The SCR cleaning lamp flash and HEST warning lamp will
ON
light on during the manual SCR cleaning function is operating.
The SCR cleaning and/or HEST warning lamp will light OFF
when the SCR cleaning function is completed.
OFF
50D93CD143
Engine Engine
Check Stop
Lamp Lamp
1. Change to a more challenging
- -
2. Perform manual SCR cleaning.
On - Manual SCR cleaning is required.
- -
DEF level 10%
- -
Engine error code 3497
DEF level 5%
- -
Engine error code 3498
DEF level 2.5%
On -
Engine error code 1673, 25% derate
DEF level 0%
On - Engine error code 3547,3714
50% derate, 30 min.
Engine error code 3712
On On Contact Hyundai service center or
dealer.
3-10
Remark
duty cycle.
-
to initiate the manual SCR