TeeJet 844-E Sprayer Control - Manual (Page 18)

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844-E Sprayer Control
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 Plus key
and Minus key simultaneously. While holding the Plus key
and Minus key in, press the Program key twice (within three
(3) seconds), and release to enter the System Setup Mode. The first
programming step should be visible.
program Units
Setting Your Program Mode (U.S., Turf, NH
3
, Imperial,
S.I.)
Default = US
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), Anhydrous
(nh3), Imperial Gallons (I
N
P
), or Metric (Si) units. Turf units displays
information in Gallons per 1000 ft 2 , NH
3
displays units in Pounds of
Nitrogen per Acre; Imperial displays units in Imperial Gallons per Acre;
and SI displays all units in Metric (l/min, l/ha, km/h, cm).
If you will be using U.S. measurements, no change is necessary. Press
the Program key to advance to the next programming step.
If you will be using one of the other units listed, press the
Plus key or Minus key to select the units you will be
using. Press the Program key to accept the value and
advance to the next program step.
reset defaults
Reset To Default Settings
If the units in the first programming step have been changed, the
console will ask if you would like to reset all of the program values to
the default settings for the units selected. If you wish to reset to the
defaults, use the Plus key or Minus key to select “YES” and
press the Program key to activate the resetting process.
If you do not want to reset to the default values, select “no” using the
Plus key or Minus key and the Program key to advance to
the next step.
NOTE: If you inadvertently changed the Program Units, select “no”
in this step. Advance to the Program Units step again using
the key and change back to your desired units. Select “no”
again at the Reset Defaults step and exit the program mode by
pressing and holding the key for three (3) seconds.
Sensor type
Flow Meter or Pressure Based
Default = FLO
The 844 system can be used with either a flow meter, pressure
transducer or both. This step tells the computer which sensor you will
be using on your sprayer to control the flow regulation.
The default value is set for a “FLO” based system using a flow meter. If
this is what you have installed on your sprayer, then press the Program
key to advance to the next step.
If, you have installed a pressure transducer instead, use the
Plus key or Minus key to select “PrS” for a pressure
based system. Then, press the Program key to advance to
the next step.
If both sensors have been installed on the sprayer, this step will
determine which sensor will be used by the 844 to determine pressure/
flow regulation. If “FLO” is selected, the flow meter will be used to
control the flow and the pressure transducer will be used only to display
the actual pressure. If “PrS” is selected, the pressure transducer will
be used to control the flow and display the actual pressure. The flow
meter signals will be ignored.
Flow Meter Calibration
Flow Meter Pulses
Default = 650
During the Flow meter Calibration Step, the turbine symbol
will be
flashing at the top of the console display.
First, locate the factory flow meter pulse rate tag on the flow meter. If
this varies from the default value of the console, use the Plus key
or Minus key to modify the value. Pressing the Plus key and
Minus key simultaneously will clear the value to zero. In some
cases, larger flow meters with small calibration numbers will include
decimals for greater accuracy. To add a decimal to the 844 calibration
number, press the Auto/Manual key.
If you are not using a flow meter, but are using a pressure transducer
instead and have selected “PrS” in the previous step, this step will not
appear.
NOTE: This flow meter number represents the number of pulses per
liter of liquid. The 844 console makes all of the necessary
conversions if using units other than metric. The same
calibration number will be used for all units.