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MAINTENANCE / DIAGNOSTICS / REPAIRS
14.2
Troubleshooting
fauLt
cause
remedy
The display does not switch on
No power supply
• Check power supply connection
(Par. 7.2).
Computer is OFF
• Press the ON key.
Valve controls take no effect
Valves not connected
• Connect the connectors
(Par. 8.3).
One valve does not open
No power supply to valve
• Check valve electric connection and operation.
The display no longer shows the speed
Wrong setup
• Check the setup of the wheel constant
(Par. 11.1).
No signal coming from the speed sensor
• Check connections to speed sensor
(Par. 8.5).
The displayed speed is not precise
Wrong setup
• Check the setup of the wheel constant
(Par. 11.1).
Output volume readout inaccurate
Wrong setup
• Check the coverage setup and the row width
(Par. 10.4 - 11.2).
• Check the setup of the flowmeter constant
(Par. 10.5).
• Check the setup of the wheel constant
(Par. 11.1).
• Check the setup of the section valve type
(Par. 10.8).
• Check connections to speed sensor
(Par. 8.5).
Sprayed surface count displayed does not
match actual sprayed surface
Wrong setup
• Check the coverage setup and the row width
(Par. 10.4 - 11.2).
• Check the setup of the wheel constant
(Par. 11.1).
• Check connections to speed sensor
(Par. 8.5).
Distance traveled count displayed does not
match actual distance covered
Wrong setup
• Check the setup of the wheel constant
(Par. 11.1).
• Check connections to speed sensor
(Par. 8.5).
Sprayed fluid count displayed does not match
litres/gpm actually sprayed
Wrong setup
• Check the setup of the flowmeter constant
(Par. 10.5).
• Check the setup of the section valve type
(Par. 10.8).
Use of three-way section valves without setting
calibrated backflows
• Perform setting.
Unable to reach output volume value set for the
automatic operation
Wrong setup
• Check spray rate setup
(Par. 11.2).
• Check the coverage setup and the row width
(Par. 10.4 - 11.2).
System not adequately sized to provide required rate
• Check maximum pressure valve setting.
• 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. 10.6).
Pressure sensor not calibrated
• Perform the calibration
(Par. 12.3).
Pressure sensor wrong installation
• Check connections to pressure sensor
(Par. 8.5).
Instantaneous pressure is not displayed
Wrong setup
• Check pressure sensor setting
(Par. 10.6).
Computer does not receive signals from pressure
sensor
• Check connections to pressure sensor
(Par. 8.5).
Pressure sensor wrong installation
• Check connections to pressure sensor
(Par. 8.5).
Rpm readout inaccurate
Wrong setup
• Check rpm sensor constant setting
(Par. 10.10).
Rpm value not displayed
Computer does not receive signals from RPM
sensor
• Check connections to RPM sensor
(Par. 8.5).
Rpm sensor wrong installation
• Check connections to RPM sensor
(Par. 8.5).
The displayed tank level is not precise
Level sensor not calibrated
• Perform the calibration
(Par. 10.9.3).
• Calibrate the level sensor again
(Par. 10.9.3).
Level sensor wrong installation
• Check connections to level sensor
(Par. 8.5).
Pump failure alarm permanently active
Computer does not receive signals from Pump
Protector sensor
• Check connections to Pump Protector sensor
(Par. 8.5).
During the tank calibration procedure, the
sprayed quantity is always steady on zero
Wrong installation / no flowmeter installed
• Check connections to flowmeter
(Par. 8.5).
• Install the flowmeter
(Par. 6.1).
Section valves and main control valve set to
OFF
• Take section valves and main control valve to
ON
(Par. 10.9.3).
14.3
Cleaning rules
- Clean only with a soft wet cloth.
- DO NOT use aggressive detergents or products.
- DO NOT clean equipment with direct water jets.
Fig. 123