25
844E Sprayer Crontrol
98-70006 R3
Pressure Regulation
Pressure Regulation Mode
Default = byp (By-pass for US, trF, I
N
P, and Si Modes)
Default = thr (Throttling for nh3 Mode)
While in the Pressure Regulating Mode step, the symbol will be fl ashing at the top of the console display.
This step tells the 844 where the regulating valve has been plumbed. Once set correctly, this value should not
change unless the regulating valve is physically moved to a new point in the plumbing. For more information on
plumbing refer to pages 2 and 3 of this manual.
The default value “bYP” indicates that the pressure regulating valve is plumbed in the bypass line. In most
situations, especially total fl ows below 4 US GPM (15 l/min) {3.3 Imperial GPM}, this is the preferred installation
position. If the default is correct, press the key to accept the value and advance to the next step.
NOTE: When programmed in the bypass mode, with the controller in “MAN” mode, the pressure regulating valve
should close when the key is pressed, and open when the key is pressed.
The pressure regulating valve can be located in the supply line between the fl ow meter and the boom control
valves. If you will be locating the pressure regulating valve in this position, use the or keys to change the
value to tHr (Throttling Mode). By doing this, you have reversed the polarity that the console uses to control the
regulating valve.
NOTE: When programmed in the throttling mode with the controller in “MAN” mode, the valve should open when
the key is pressed and close when the key is pressed.
Press the key to advance to the next step.
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