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3.9 PERFORMING A RETUNE
NOTE: Sensors are not adjusted or calibrated by performing a
ReTune. A retune recalibrates hydraulic valve parameters.
3.9.1 Perform a system ReTune when:
• When a hydraulic solenoid valve is changed.
• When the hydraulic pump is changed or adjusted.
• When the normal working temperature of the hydraulic oil has shifted
significantly from when the system was previously calibrated.
• If you are running a pull type sprayer and use different tractors to
operate the sprayer, you should perform a ReTune each time the tractor
is changed.
• If you have a flow control for the boom hydraulics, set it prior to
tuning. If you change the flow setting by more than 20 percent, you
should perform a ReTune.
3.9.2 Before starting a ReTune:
• Unfold the sprayer in a location that is relatively level, and where the
sensors are over bare soil or gravel.
• Check the pads between the sprayer boom and the boom carrier frame
to ensure no friction because of wear. Use grease or other lubricants, if
necessary.
• Start the solution pump and run the sprayer’s engine at a normal
working RPM for the entire setup.
3.9.3 Performing a ReTune:
• Navigate to the "
ReTune?" menu prompt in the SETUP menu.
• To start a ReTune, confirm with the "AUTO (YES)" switch.
• Follow the instructions on the LCD screen.
NOTE: The booms are to be leveled at a normal working height when
ReTune starts – it is not necessary to set them to 35 inches. The
35 inch height is only required during the Automatic/Manual
System Setup.
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