Def/Scr System Alarm; Def/Adblue® Level Alarm - Hitachi ZW140-6 Operator's Manual

DEF/SCR System Alarm

When the DEF/AdBlue® level becomes low and/or the
Urea SCR system malfunctions, the engine performance is
controlled depending on the status.
The operator is alerted with alarm indicators and buzzer.
Move and park the machine in a safe place and follow
troubleshooting guide for the accompanied alarms.
DEF/AdBlue® Level Alarm
Display of the DEF/AdBlue® gauge changes depending on
the DEF/AdBlue® level.
The engine speed and output level control is as follows.
Level Gauge
(Red, light)
(Red, slow blink)
(Red, slow blink)
(Red, fast blink)
(Red, fast blink)
IMPORTANT: When DEF/AdBlue® tank becomes empty,
the engine runs but machine operation is disabled
until DEF/AdBlue® is supplied.
OPERATOR'S STATION
Alarm Indicator
Buzzer sounds once.
Buzzer sounds every 3.8
seconds.
Buzzer sounds every 1.2
seconds.
(Yellow)
(Yellow)
Buzzer sounds every 0.3
seconds.
(Red)
Buzzer
1-28
Status/Inducement
DEF/AdBlue® level is low.
Refill DEF/AdBlue®.
DEF/AdBlue® is insufficient.
Refill DEF/AdBlue®.
Engine output is restricted.
DEF/AdBlue® tank is empty.
Refill DEF/AdBlue®.
Engine output and speed are
restricted.