Control Boxes

Spraying functions are electrically operated from the EHC-2 control box in the cab. After switching on the supply voltage, several functions can be operated. When spraying with automatic rate control mode, the pressure control must be set to the Auto mode (switch 2) in order for the computer to be able to control the required application rate by adjusting the liquid pressure. If the automatic rate control is not used, the pressure control must be set to Manual mode (switch 2) to be able to adjust the liquid pressure regulator with switch 3.

A-EHC-2 control box

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1-Supply voltage on/off (green LED)
2-Manual/Automatic pressure control (rate control) toggle switch
3-Setting the liquid pressure (higher/lower) in manual control
4-Setting the air pressure (higher/lower) in manual control (Twin Fluid)
5-Left spray boom arm raise/lower (variable geometry)
6-Free function switch on/off
7-Right spray boom arm raise/lower (variable geometry)

8-Electrical agitation switch on/off
9-Left spray boom arm folding in/out
10-Worklight switch on/off
11-Right spray boom arm folding in/out
12-Boom pendulum lock on/off
13-Left spray boom outer segment folding in/out
14-Manual/Automatic control of filling valve (automatic filling)
15-Right spray boom outer segment folding in/out

16-Electrical filling valve (suction from solution tank / external filling)
17-Height adjustment sprayboom (higher/lower)
18-Foam marker left-off-right
19-Boom tilt correction with rotary switch
20-Boom tilt correction with toggle switch
21-Drawbar steering left/right
22-Automatic centre position of drawbar
23-Automatic trailing mode (manual steering/automatic trailing/Headland Management System)

24-Edge nozzle tips left-off-right
25-Main shut-off valve switch on/off (Master)
26-Right boom sections more / less
27-Central boom section on/off
28-Left boom sections more / less
29-SKIP switch for boom section control

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