ARAG 863T Series, Инструкция по установке, эксплуатации и обслуживанию

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9 USE
CAUTION: Do not run light valve for a long time, the inside gaskets could be damaged and the valve could block up.
9.1 Controls
• For details on any operation or adjustment of the valves, ALWAYS refer to the use and maintenance manual of your own control device.
• Power the valve using a suitable control device (refer to the technical data section for the exact absorption values)
The specifications of A-Net and SAEJ1939 protocols to send commands to the valve can be requested by contacting the ARAG technical support
department at the following address: support@aragnet.com.
9.2 Calibrating the metered by-passes
These cocks ensure a constant liquid output even when working with one or more closed section valves.
The calibration must be performed EVERY TIME that the nozzle type is changed.
The adjustment knobs of metered by-passes feature a graduated scale. Once each metered by-pass has been calibrated, it is possible to write the
values indicated on the graduated scale, according to the nozzle type used, in the tables on page 12. In this way, when using the same nozzles
again, it will not be necessary to repeat the adjustment on the metered by-pass, but it will be sufficient to set the by-passes to the values indicated
in the tables.
1 2 3
- Activate the hydraulic circuit.
- Adjust the pressure to the predefined working value.
1 Close a section valve by activating the corresponding switch on the control device (‘OFF’ position).
2 Adjust the corresponding metered by-pass by turning the knob until restoring the previously set pressure value with all the section valves open.
3 Open and close the section valve (by properly activating the corresponding switch on the control device); check that the pressure value remains
constant.
If the pressure value changes, repeat the operations in section
2
until no more variations are detected.
4 Adjust ALL the section valves before spraying is carried out;
based on the configuration of the control unit, calibration can be performed as follows:
• The number of nozzles is the SAME for all section valves
Carry out the adjustment procedure for one valve only; for all the other valves, position the relevant indicator of the graduated scale at the same
point.
• The number of nozzles is DIFFERENT for each section valve
Carry out the adjustment procedure for each section valve.
• There is a SYMMETRICAL number of nozzles for each section valve (Fig. 5)
Carry out the adjustment procedure only for one side of the control unit (right or left boom, valves A, B, C): to adjust the other boom side, turn the
knobs of metered by-passes in the same way, matching the valves (Fig. 5).
Fig. 5
If the nozzle types are not changed, the adjustments carried out will ensure a constant liquid spreading even for spraying
operations to be performed at different working pressures.
USE