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Tips From Tech: Get Ready for Application

by Jun 15, 2015DirectCommand®, Training & Support

As planting season comes to a close, it is time to look towards a summer of spraying.  When pulling the sprayers out of the shed, there are a few things to look over to ensure you are applying accurately and efficiently in order to achieve the greatest return on your investment.

At the beginning of the application season, we recommend taking a look at the flow meter and clean it off if necessary.  One of the easiest tests to perform is to load the sprayer up with water and begin spraying.  When conducting this test, there are a few suggestions that can help make sure everything is operating properly.  To start with, it is useful to create a test field when checking the sprayer over to prevent recording incorrect data in actual fields.

When performing tests on the sprayer or when you want to clean out the tank at the end of the day and wish to apply while sitting still, there are a few steps that need to be completed.  The first step is to enter a manual speed into the display, to simulate movement of the sprayer. To switch to a manual speed, access the speed input settings on the display.  From there, change the primary speed source to “Manual Speed” and enter in a speed to simulate.  After completing this step, it is important to turn off Autoswath within the display as well.  If you have an implement switch on the system, verify that it is in the application position and ready to spray.  Next, you can enter in a target rate and turn your switches on to begin applying.

When preparing your sprayer, it is a good idea to enter in a known quantity of water into the tank.  Doing this will allow an adjustment of the flow meter calibration if necessary.  When filling the tank, you can access the “Containers” screen from the run screen or the productivity screen to enter in the amount of product in the tank. At the beginning of the application season, we also recommend taking a look at the flow meter and cleaning it off if necessary. If the display is reading a different rate than what was actually applied and the flow meter is clean, then the flow meter calibration may need to be changed. 

A simple calculation for this is below:

Existing flow meter calibration number x Total applied in the display / Actual total applied

Adjusting the flow meter can be an ongoing process throughout the season and can be adjusted on-the-go using the formula from above.

If your display appears to be having trouble maintaining the target rate, and the flow meter is properly adjusted, then the control valve settings may need to be adjusted.  As a starting point, reference your display manual to find default control valve settings.  In some cases, additional adjustment may need to be done after entering the default values. 

For questions or reference material on Direct Command Liquid Operation, the display manual and Knowledgebase are fantastic resources.  Your local dealer and Ag Leader Technical Support are also available options for any questions or troubleshooting concerns that may arise this season.

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