ARAG Electriccontrol unit for crop-spraing application 871 - Manual (Page 17)

17
5 USE
For detailed information on operation or adjustment of unit valves, ALWAYS refer to
the operating and maintenance instructions manual relevant to your control device.
Pressure readings are indicated by the pressure gauge or displayed at the control
device (where unit is equipped with a pressure sensor).
5.1 Calibration of operating pressure
1 Select the type of nozzle and the relative operating pressure according to the litres/hectare (l/ha) to be
sprayed and the speed of progress.
2 With the machine off, start the pump and take it to its operating level.
3
Set the relevant switch on the control
device to 'ON' to open the main valve.
4
Set the relevant switches on the control device to 'ON' to open all
section valves.
5 Now take the unit pressure to the required level for spraying. There are two ways to perform this
adjustment:
CONTINUES