NORAC UC4.5-BC Quick Guide - Manual (Page 16)

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5.2 Retune
From time to time it may be necessary to recalibrate (Retune) the UC4.5 electronics to the
sprayer’s hydraulics. Examples of such times are:
 A hydraulic solenoid valve has been changed.
 The hydraulic pump has been changed or adjusted.
 A different tractor has been connected to the sprayer.
 The tractor’s hydraulic flow control has been adjusted.
If running a pull type sprayer and using different tractors to operate the sprayer, run the Retune
procedure each time the tractor is changed. If there is a flow control for the boom hydraulics,
set it prior to tuning. If the flow setting is changed by more than 20 percent, run a Retune.
Navigate to the "Retune?" menu prompt in the SETUP ( ) menu and confirm with the
button. The system will go through only the “Hydraulic Tuning” portion of the Automatic
Setup.
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 System Setup.