ARAG Bravo 400S Crop sprayer - Manual (Page 102)

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16.2 Troubleshooting
FAULT CAUSE REMEDY
The display does not switch on
No power supply • Check power supply connection
Computer is OFF • Press the ON key
Valve controls take no effect Valves not connected • Connect the connectors
One valve does not open No power supply to valve • Check valve electric connection and operation
Speed reading is unstable
Job start procedure was launched at a point too far from
the field to be sprayed
• Start a new job (par. 11.5) closer to the field.
Output volume readout inaccurate Wrong setup
• Check boom setup (par. 10.1.1)
• Check the setup of the flowmeter constant (par. 10.1.2)
• Check pressure sensor full scale setting (par. 10.1.4)
Covered area count displayed does not match
actual covered area
Wrong setup
• Check boom setup (par. 10.1.1)
• Check implement geometry (par. 10.1.13- 10.1.14)
• Check tractor geometry (par. 10.2.9)
Sprayed fluid count displayed does not match
litres/gal actually sprayed
Wrong setup
• Check the setup of the flowmeter constant (par. 10.1.2)
• Check the selected nozzle at job start (par. 11.5)
Unable to reach output volume value set for the
automatic operation
Wrong setup
• Check spray rate setup (par. 11.5- 15.1)
• Check the setup of the boom width (par. 10.1.1)
System not adequately sized to provide required rate
• Check maximum pressure valve adjustment
• Make sure control valve is adequate for specific system
Control valve malfunction • Check valve operation
Instantaneous pressure readout inaccurate
Wrong setup • Check full scale setup for pressure sensor (par. 10.1.4)
Pressure sensor not calibrated • Perform the calibration (par. 10.1.12)
Pressure sensor wrong installation • Check connections to pressure sensor
Instantaneous pressure is not displayed
Wrong setup • Check pressure sensor setting (par. 10.1.4)
Computer does not receive signals from pressure sensor • Check connections to pressure sensor
Pressure sensor wrong installation
• Check connections to pressure sensor
Rpm readout inaccurate Wrong setup • Check rpm sensor constant setting (par. 10.1.8)
Rpm value not displayed
Monitor does not receive signals from RPM sensor • Check connections to RPM sensor
Rpm sensor wrong installation • Check connections to RPM sensor
16.3 Cleaning rules
- Clean only with a soft wet cloth.
- DO NOT use aggressive detergents or products.
- DO NOT aim water jets directly at monitor and control unit.
Fig. 359
MAINTENANCE / DIAGNOSTICS / REPAIRS