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5 - Operation
Operating the Control Unit While Spraying - Spray Box III
EVC operating unit only
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The switches of the spray control unit (Spray Box) control the following functions:
1. Power ON/OFF. Turns the Spray Box power on or off.
2. Spray pressure regulation. Regulates the main spray pressure.
3. Main valve ON/OFF. Turns all sections on or off. Lever up is OFF and down is ON.
4. Optional function (A/OFF/B). If extra equipment is added, it can be controlled from here. Middle position is OFF.
5. End nozzle (Left/OFF/Right). If end nozzles are fitted, they can be turned on for each side. Middle position is OFF.
6. Foam marker blob interval. Foam marker equipment is not included from HARDI.
7. Foam marker (Left/OFF/Right). Foam marker equipment is not included from HARDI.
8. Section valves. Turns individual spray sections on or off. Lever up is OFF, and lever down is ON.
• In order to close the entire boom, switch main ON/OFF (3) to OFF position. This returns the pump output to the tank
through the return system. The diaphragm non-drip valves ensure instantaneous closing of all nozzles.
• In order to close one or more sections of the boom, switch the relevant distribution valve (7) to off position (upwards).
The pressure equalization ensures that the pressure does not rise in the sections, which remain open.
• On the sprayer the suction valve should be turned toward "Suction from Main tank" and the pressure vvalve should be
turned toward "Spraying". Turn the agitation valve to "Agitation" if necessary.
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