Foam Marker, Electrically Operated

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Sprayer Main Page - Foam Marker

 

1-Foam marker (Left)

2-Foam marker (Right)

  

If foam markers are fitted to the sprayer (1) & (2) will be displayed on the "Sprayer - Main" page. When active they will become purple dependent on which

one has been selected, otherwise they will remain grey (inactive).

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Foam Marker

A foam marker is available for marking of spraying lanes. A 12 V compressor (A) and a 22 liter foam tank (B) is then fitted on the right side of the platform. Foam concentrate is mixed with air to form foam doses in the mixing heads (C) at each end of the spray boom.

Before making the foam, first decide how long the foam doses must last in the field. Temperature, sunlight, relative humidity, water hardness, foam concentration and wind speed are some of the factors which influence the time the foam dose will last. If a low soap-water ratio of 1:63 (1.5%) is mixed with hard water, for example, the foam dose will last for approx. 11 hours at 23°C, partially cloudy weather with a low to moderate wind speed. If a higher soap concentration of, for example 1:32 (3%) is used, under the same conditions, the foam will last approx. 22 hours.

The foam doses will last longer when there is:

  • higher soap concentration
  • softer water
  • higher relative humidity
  • lower temperatures
  • partial clouds
  • lower wind speed

Unscrew the filling top to fill the foam tank with foam concentrate. First fill the tank with the required amount of water and then add soap, in order to avoid foaming in the tank itself.

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A-Compressor
B-Foam tank
C-Mixing head

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Operation of foam marker

causym CAUTION: The contents of the foam tank can be under pressure. Unscrew the tank top slowly in order to release any pressure. Do not release the pressure by adjusting the serrated screw (overpressure valve). This safety valve has been factory set at the maximum permissible pressure (1 bar) in the tank.

The operation of the foam marker is done with switch 16 of the control panel EHC-2.

In order to operate the foam marker, set the control panel switch 16 to the left or to the right to send the foam concentrate to the left or right boom arm. Foam doses will not be formed with the switch in the center position.

The "MAX" / "MIN" knob (A) on the compressor is used to adjust the amount of foam per time period. Turn the knob anti-clockwise (towards MAX) for more foam, or clockwise (towards MIN) for less foam. In the maximum position, a foam dose is formed every two seconds, this is one foam dose once every 4 meters at 7 km/h. In this maximum position, the tank contents last for approx. 40 minutes.

Flush the system at the end of each season, especially if hard water is used.

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A-Control Knob

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