• Main menu: This is the default mode. With the main screen open, briefly press to navigate through available menus. If no key is pressed for 3 seconds, the system takes you back to the Main screen. Refer to “Main menu options” on page 34 for more information on available options
• Service mode: Use this mode to check and/or change system settings. Press and hold for 1 second to enter the service mode. Go to “Service mode” for more information on available options.

Before each use, check system pressure by briefly flushing the WEED-IT system:

1. Switch on the system
2. Press the Flush key:
   
3. Check that the pressure is 3.0 bar (43.5 psi). The top right of the Control Panel shows the pressure.

Please note: If the machine has been in storage for a longer period of time, the pressure may be higher. After flushing the system, the pressure should return to the regular 3.0 bar (43.5 psi).

Before each use, check functioning of the detection sensors:

1. Make sure there are no plants in the detection line (to prevent the corresponding nozzles from spraying continuously in step 6).
2. Switch on the system.
3. Wait for the Main screen to open.
4. Enter the Service mode.
5. Press  repeatedly until menu 102 opens.
6. Press to activate Detection. As long as Detection is active, the leaf icon will flash.
7. Activate nozzles by supplying chlorophyl (green plant material) in the corresponding sensor channels.
8. Press again to stop.
9. Press to return to the Main screen.

Flush the nozzles regularly with clean water to avoid clogging.

1. Fill the tank with water.
2. Start the system.
3. Wait until the Main screen opens.
4. Press to flush all nozzles.

To clean an individual nozzle more thoroughly, use the nozzle cleaning menu (102):

1. Make sure there are no plants in the detection line (to prevent the corresponding nozzles from spraying continuously in step 6).
2. Stop the vehicle.
3. Enter the Service mode.
4. Press repeatedly until menu 102 opens.
5. Press to activate Detection. As long as Detection is active, the leaf icon will flash.
6. Activate the nozzle by supplying chlorophyl (green plant material) in the corresponding sensor channel.
7. Press again to stop.
8. Press to return to the Main screen

Several options are available to check job productivity apart from the information given in the Main screen.

1. Enter the Service mode.
2. Press repeatedly until menu 103 opens.

Go to Job Menu for more information.

WEED-IT can be used in various modes:

• Spot spraying;
• Full coverage;
• Dual function (spot & coverage).

To change the spraying mode:

1. Stop the vehicle.
2. Enter the Service mode. The global information screen opens:
   
3. Press briefly a number of times, until menu 104 opens:
   
4. Press the Mode function key to select the PWM mode you wish to use.
5. Adjust the available parameters to match your nozzle type and preferred spray rates.
6. Press OK to confirm. All sensors are reconfigured and the system restarts.

Follow the steps below if you have replaced nozzle cap types on the WEED-IT by a new type:

1. Stop the vehicle.
2. Enter the Service mode.
3. Press briefly a number of times, until menu 104 opens:
   
4. Use theUp/Down navigation keys to select the nozzle parameter, if necessary.
5. Use the Left/Right navigation keys to select the appropriate nozzle type.
6. Press OK to confirm. All sensors are reconfigured and the system restarts.

Only use the nozzle types that you can select in the software. The nozzle type is usually engraved in the top surface of the nozzle.

Follow the steps below if you want to change the application rate:

1. Stop the vehicle.
2. Enter the Service mode.
3. Press briefly a number of times, until menu 104 opens.
   
4. Use the Up/Down navigation keys to select the Spot and/or Cover parameter if necessary; use the Left/Right navigation keys to change the application rate.
   1. The spot parameter determines the amount of herbicide mix that is applied to the weeds that are detected by the system. The herbicide is applied at the selected application rate for any speed up to 25 km/h and also while turning.
   2. The cover parameter determines the amount of herbicide mix that is applied to the entire field (full coverage mode) or the rest of the field (dual function mode).
      
5. To correctly calculate how much spraying liquid is applied, WEED-IT needs to know which nozzle type is used. When mounting a different type of nozzle, use menu 105 to select the appropriate type before proceeding. This nozzle is used for all PWM modes and can be adjusted in the same way in all of these modes. See “Setting the nozzle cap type” for more information.
6. Press OK to confirm. All sensors are reconfigured and the system restarts.

The WEED-IT system allows you to make changes to the spraying margin during use of the system, for example to compensate for strong winds.

Please note that spraying during very strong winds is not advised.

From the Main screen:

1. Press  briefly to open the Preset menu:
   
2. Press to change the margin. By default, the margin presets are defined as follows:
3. 1. = 50 mm
   2. = 100 mm
   3. = 150 mm
   4. = 200 mm
4. Press repeatedly until the required margin is displayed.
5. Press  twice or wait for 3 seconds to return to the Main screen.

The sensitivity of the sensors may have to be adjusted, depending on circumstances. Several different presets are available in the Preset-menu to define sensor sensitivity:

1. From the Main screen, press once to enter the Preset menu.
2. Use to select the desired preset. This function allows the WEED-IT to be used under different conditions, for example on a wet surface after rain, in bright sunlight or with very small plants. Each preset has a number; the number is displayed on the sensitivity key and in the top right of the screen. A low number means a high sensitivity and a high number means a low sensitivity:
   

You may have to experiment to find the appropriate setting. Check the display to verify sensor
response. A series of vertical bars under the sensor icons indicates the activity of each sensor.

Use the Hold function to temporarily stop spraying, for example when turning on headlands:

• In the main screen, press the function key.
• Press it once more to resume spraying.

If you have installed an external hold switch you can use this switch as well as the function key.

Spot spraying mode

Stop the vehicle and navigate to menu 104. Press the Right navigation key to select Spot spraying. The screen changes

To change settings:

• Use the Up/Down navigation keys to select a parameter. Use the Left/Right navigation keys to change the value of the parameter.
  
  
• The mode Spot spraying uses PWM, so the Spot parameter can be changed without changing the pressure or ideal speed. The application rate percentage is shown on the right of the screen. This is the percentage of the maximum application rate at this pressure and speed. Use the Left/Right navigation keys to change the application rate. This amount of herbicide mix is only applied to the weeds that are detected by the system. The Spot rate is calculated as a band with calculation. The herbicide is applied at the same application rate for any speed up to 25km/h and also while turning (if two speed sensors are used and the option Speed sensors at L & R is enabled). Use the F4 and F5 keys to quickly select the shown application rate percentages.
  
  
• Use the Left/Right navigation keys to change the ideal speed. The Spot parameter changes when the ideal speed is being changed.
  
  
• Press OK to confirm. All sensors are reconfigured and the system restarts.

Full coverage mode

Full coverage mode will spray liquid continuously, like in a regular spraying application. The cover parameter determines the application rate that is applied to the entire field. It is calculated as normal spray application (with overlap between neighboring nozzles).

Stop the vehicle and navigate to menu 104. Press the Right navigation key to select Full coverage. The screen changes

• Use the Up/Down navigation keys to select a parameter. Use the Left/Right navigation keys to change the value of the parameter.

Dual function

The Dual function combines Spot spraying and Full Coverage; it applies a fixed amount of herbicide to the whole field (Cover). When a weed is detected, a larger amount (Spot) is applied. The Spot rate must be higher than the Cover rate.

Stop the vehicle and navigate to menu 104. Press the Right navigation key to select Dual function. The screen changes:

• Use the Up/Down navigation keys to select a parameter. Use the Left/Right navigation keys to change the value of the parameter. 
• The difference between the application rate percentages of the Spot parameter and the Cover parameter should be at least 40%. If both application rates are equal, a warning will be shown that the rates are equal. In that case, it would be better to use the mode Full coverage
  

WEED-IT identifies the following types of messages (highest priority first):
1. Errors
2. Warnings
3. Messages

In case of problems or errors, a message appears on the screen. In the Main menu, a message is displayed immediately below the speed bar

In the Main menu, only one message can be displayed at a time. If more than one message is pending, or if multiple errors occur at the same time, the messages are shown alternately for a few seconds. Use the Message menu to check for any other messages. To access the Message menu:

1. Press for 1 second to enter the Service mode.
2. Repeatedly press until menu 101 opens.
3. The header indicates the number of warnings that has occurred. Each line in the display shows one message
   
4. An error is automatically removed from the Main screen when a problem is solved. The error will still be visible in this screen (101) as a non-persistent error.