DISPLAY AND CONTROL ELEMENTS 4
MHL380 D 4.37
4.7 Monitoring the machine during oper-
ation
4.7.1 Monitoring strategy
After switching on, controler components
monitor various diesel engine and hydraulic
system parameters (Fig. 64).
Warning levels are defined for individual pa-
rameters to prevent damage to the machine.
If the current machine data exceeds or drops
below these levels, the controler components
take action. This may involve:
ï‚Ÿ Optical warnings in the main control display
ï‚Ÿ Acoustic warnings via the warning buzzer
ï‚Ÿ Machine actions being disabled or enabled
The following priority applies when multiple
warnings occur at the same time:
1 Oil pressure
2 Coolant level
3 Coolant temperature
4 Charge air temperature
To prevent uncontrolled machine
movements, the diesel engine is
not switched off. If warnings occur,
make the machine safe and switch
it off as quickly as possible. To pre-
vent damage to the machine, de-
termine and rectify the cause. Only
after doing this may you start the
diesel engine and machine back
up.
If the battery charge indicator
(64/36) or the engine oil pressure
indicator (64/37.1) respond, shut
down the diesel engine immediate-
ly.
MHL-NBXX-627
35 36 37 38
46
47
49
50
35.1
35.2
39
37.1
37.2
68
Fig. 64 Monitored parameters
35 1: Coolant temperature or hydraulic oil temperature
indicator
35 2: Charge air temperature indicator
36 Battery charge indicator
37 1: Engine oil pressure indicator
37 2: Water in fuel indicator
38 Coolant level or hydraulic oil level indicator
39 Air filter, return filter, or hydraulic oil filter contamina-
tion indicator
46 Travel and work functions disabled indicator
47 Text output for the indicator displays
49 Diesel engine coolant temperature display in °C and
warning levels based on background color
50 Hydraulic oil temperature display in °C and warning
levels based on background color
Monitor
ing the
machin
e
during
operati
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