15
Operation
PROGRAMMING THE 844 SPRAYER CONTROL SYSTEM
SYSTEM SETUP MODE
The System Setup Mode contains the programming steps that customize the controller to the sprayer or
sprayer components. These include calibration steps and parameters that, once programmed, will likely never
change.
To enter the System Setup Mode, press and hold the and keys simultaneously. While holding the
and keys in, depress the key twice (within 3 seconds) to enter the System Setup Mode.
SETTING YOUR PROGRAM MODE (U.S., TURF)
Default = U.S.
1. The 844 console will display a large “US” in the center of the display. The default value “US” indicates
that all default values will be shown in U.S. measurements, unless changed to Turf (trF). Switching to
Turf units will cause the controller to display application rates in Gallons per 1000 ft².
2. If you will be using U.S. measurements no change is necessary, depress the
key to advance to the
next program step.
3. If, however, you will be using turf units, then depress either the or key to change from “US” to
“TURF” mode. Depress the key to accept the value and advance to the next program step.
FLOWMETER PULSES
Default = 650
1. During the Flowmeter Calibration Step, the
!
symbol (flowmeter turbine) will be flashing at the top of
the console display.
2. First, locate the factory calibrated flowmeter pulse rate tag on the flowmeter. If this varies from the
default value of the console, use the or keys to modify the value. Depressing the and
keys simultaneously will clear the value to zero.
PRESSURE BASED SYSTEM
Note: If using a pressure based system, the 844 console will be preprogrammed for the pressure transducer
sold with the controller kit, and this programming step will not appear.
