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OPERATOR'S STATION
Remedy
Display Alarm Name Content of Alarm
Urea SCR System Alarm* DEF/AdBlue® Level Is Low Or Urea SCR System Is Abnormal.
Refill DEF/AdBlue® If Level Is Low.
Consult Your Authorized Hitachi Dealer For System Malfunction.
Engine Output Restriction Engine Output Is Restricted.
Aftertreatment Device
Regeneration Request
(Blinking) (Yellow)
Aftertreatment Device Regeneration Is Needed. Set Pilot Control Shut-
off Lever To The LOCK Position. Run The Engine At Slow Idle Speed.
Turn The Manual Regeneration Switch To The Regeneration Position.
Aftertreatment Device
Regeneration Inhibited Alarm
(Lighting) (Yellow)
As The Regeneration Inhibition Has Been Set, Manual Regeneration
Cannot Be Performed.
Move The Machine To A Safe Area, Release The Regeneration
Inhibition, And Perform Manual Regeneration.
Aftertreatment Device Auto-
Regeneration Inhibited Alarm
(Lighting) (Yellow)
As The Regeneration Inhibition Has Been Set, Auto Regeneration
Cannot Be Performed.
Move The Machine To A Safe Area And Release The Regeneration
Inhibition.
Engine Oil Level Alarm Check Engine Oil Level And Add Oil If Required.
Coolant Level Alarm Check Coolant Level And Add Coolant If Required.
Overheat Alarm** Coolant Temperature Is Abnormally High. Stop Operation. Run The
Engine At Slow Idle To Cool Coolant Temperature.
Hydraulic Oil Overheat Alarm
(Only ZX330-6 class)
Hydraulic Oil Temperature Is Abnormally High. Stop Operation, Check
Hydraulic Oil Level And Check For Any Oil Leaks From Hydraulic
Circuit.
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NOTE: *Alarm mark is displayed and buzzer will sound.
** Alarm mark is displayed and buzzer will sound. Turn engine control dial to the slow idle position, and buzzer will
stop.
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