TeeJet Technologies 844E User manual

844E
SPRAYER CONTROL
Installation, Programming, and Operating Manual

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TableofContents
INTRODUCTION 2
MOUNTING SPRAYER COMPONENTS 3
Pressure Regulator in Bypass Mode...................................................................................... 3
Pressure Regulator in Throttling Mode ................................................................................ 5
Flow Meter .............................................................................................................................. 6
Boom Control Valves .............................................................................................................. 6
Pressure Transducer ............................................................................................................... 6
INSTALLING THE SPEED SENSOR ASSEMBLY 7
Components.................................................................................................................................................7
Speed Step 1 - Location.......................................................................................................... 7
Proximity Sensor (optional)........................................................................................................................7
Speed Step 2 - Installing The Wheel Magnets ...................................................................... 8
Speed Step 3 - Installing the Magnetic Sensor..................................................................... 9
Speed Step 4 - Conrming Speed Sensor Installation....................................................... 10
Magnetic Wheel Sensor............................................................................................................................10
Radar..........................................................................................................................................................10
MOUNTING THE TEEJET 844 CONSOLE 11
Console Step 1 - Location..................................................................................................... 11
Console Step 2 - Mounting................................................................................................... 11
Console Step 3 - Power Connection .................................................................................... 12
Console Step 4 - Connecting Component Cables............................................................... 14
Connect Step 1 - Wiring Layout ........................................................................................... 15
Connect Step 2 - Making The Connection........................................................................... 16

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PROGRAMMING GUIDELINES 19
IMPORTANT PRELIMINARY INFORMATION 19
Steps to Successful Programming....................................................................................... 19
PROGRAMMING THE 844E SPRAYER CONTROL SYSTEM 20
SYSTEM SETUP MODE 20
Program Units....................................................................................................................... 20
Setting Your Program Mode (U.S., Turf, NH3, Imperial, S.I.)...................................................................20
Reset Defaults....................................................................................................................... 20
Reset To Default Settings.........................................................................................................................20
Sensor Type........................................................................................................................... 21
Flow Meter or Pressure Based.................................................................................................................21
Flow Meter Calibration.........................................................................................................21
Flow Meter Pulses.....................................................................................................................................21
Pressure Transducer ............................................................................................................. 22
Maximum rating (P Hi)...............................................................................................................................22
Low Pressure Calibration (P rEF)............................................................................................................22
Nozzle Spacing...................................................................................................................... 23
Tips Per Boom Section..........................................................................................................23
Number of Spray Tips Per Boom Section...............................................................................................23
User Program Tip .................................................................................................................. 24
User Programmable Tip............................................................................................................................24
Pressure Regulation ............................................................................................................. 25
Pressure Regulation Mode.......................................................................................................................25
Regulation Adjustment Speed ............................................................................................ 26
Coarse RegulationAdjustment Speed....................................................................................................26
Fine RegulationAdjustment Speed.........................................................................................................26
Control Valve Type................................................................................................................ 27
Boom Control Valve Type: 2-Way/3-Way.................................................................................................27

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Calibrate Speed .................................................................................................................... 27
Speed Sensor Calibration.........................................................................................................................27
Proximity/Magnetic Pulses.......................................................................................................................27
Automatic Calibration:.................................................................................................................................28
Manual Calculation:.....................................................................................................................................28
Radar Speed Pulses .............................................................................................................. 29
Automatic Calibration:..............................................................................................................................29
Manual Calculation:.....................................................................................................................................29
Distance Counter .................................................................................................................. 29
Simulated Ground Speed..................................................................................................... 29
Program Specic Gravity ..................................................................................................... 30
Liquid Specic Gravity (Density) ......................................................................................... 30
Communications................................................................................................................... 31
Minimum Pressure................................................................................................................ 31
Minimum Regulating Pressure Setting....................................................................................................31
APPLICATION SETUP MODE 32
Target Application Rate ....................................................................................................... 32
Nozzle Selection ................................................................................................................... 33
Calculation Troubleshooting ............................................................................................... 35
Adjust Speed:............................................................................................................................................35
Adjust Pressure:........................................................................................................................................35
Liquid Density:...........................................................................................................................................35
OPERATING INSTRUCTIONS 37
SPRAYER CHECKOUT 37
THE SPRAYING OPERATION 38

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FEATURES 39
Boost Mode ........................................................................................................................... 39
Area/Volume Feature ........................................................................................................... 39
Flow Rate Feature ................................................................................................................. 40
Application Alarm................................................................................................................. 40
No Flow Alarm....................................................................................................................... 40
Printing.................................................................................................................................. 41
TROUBLESHOOTING GUIDE 42
FLOW METER CALIBRATION 48
Method 1 – Known Volume.................................................................................................. 48
Step 1 – Known Value ...............................................................................................................................48
Step 2 – Programming Calibration Number............................................................................................48
Step 3 – Resetting Volume Counter.........................................................................................................48
Step 4 – Spraying Known Volume............................................................................................................48
Step 5 – Entering in New Flow meter Calibration Number....................................................................48
Step 6 – Double-checking the New Value................................................................................................48
Step 1 – Check Tip Size............................................................................................................................49
Step 2 – Count Tips...................................................................................................................................49
Step 3 – Calculated Flow..........................................................................................................................49
Step 4 – Measure.......................................................................................................................................49
Step 5 –Adjustments................................................................................................................................49

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844E SPRAYER CONTROL
Copyrights
© 2011 TeeJet Technologies. All rights reserved. No part of this document or the computer programs described
in it may be reproduced, copied, photocopied, translated, or reduced in any form or by any means, electronic or
machine readable, recording or otherwise, without prior written consent from TeeJet Technologies.
Trademarks
Unless otherwise noted, all other brand or product names are trademarks or registered trademarks of their
respective companies or organizations.
Limitation of Liability
TEEJET TECHNOLOGIES PROVIDES THIS MATERIAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESSED OR IMPLIED. NO COPYRIGHT LIABILITY OR PATENT IS ASSUMED. IN NO EVENT SHALL
TEEJET TECHNOLOGIES BE LIABLE FOR ANY LOSS OF BUSINESS, LOSS OF PROFIT, LOSS OF USE OR
DATA, INTERRUPTION OF BUSINESS, OR FOR INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES OF ANY KIND, EVEN IF TEEJET TECHNOLOGIES HAS BEEN ADVISED OF SUCH DAMAGES
ARISING FROM TEEJET TECHNOLOGIES SOFTWARE.

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INTRODUCTION
Congratulations! And thank you for choosing TeeJet Technologies’ advanced 844 sprayer control system. With its
proper installation and maintenance, you can enjoy many seasons of accurate and uniform spray application with
fingertip convenience and ease of operation.
Installation and Programming of your control system will be covered in easy to follow, step-by-step instructions.
NOTE: WE RECOMMENDTHAT YOU READTHESE INSTRUCTIONS COMPLETELY before attempting
installation and programming of your 844 sprayer control. The unit’s performance will depend on its proper
installation and programming, along with planned preventative maintenance of your entire sprayer.
Easily Accessible
Programming Mode
is very user-friendly. The
process is made simple
with a series of easy-
to-follow, symbol-driven
programming steps.
844E SPRAYER CONTROL
Auto/Manual Control
gives the operator a
manual application option
for fail-safe reliability.
Master Shuto
controls all boom sections
with one switch.
Color-Coded Tip Selection Bar
allows for easy user programming by
matching the color of TeeJet VisiFlo®
spray tips.
Individual Boom Controls
give independent control of up to five boom sections,
allowing better management of varying field features
like waterways and terraces.
Boost Mode
will temporarily increase or
decrease application rates for
special situations, such as in
patches of heavy weeds.
A Large, Backlit Display
continuously displays all vital spraying
functions. With a quick glance, the
display reveals the application rate
(automatically switches between
target and actual), pressure, speed,
and area covered.
Aluminum Console Housing
with sealed computer switch panel
resists electronic interference and
damage through rough handling for
years of reliable service.
e
h
e
e
n
r
B
target
a
d
d
y
• Full-featured sprayer control with industry-leading
ease of use
• Large back-lit display shows all spraying
information at a glance
• Color-coded tip selection for easy programming
• Communication Port for PC and GPS interfacing
• Flow or pressure based regulation options provide
reliability and flexibility
• Five boom section switches plus master shutoff
• Built in application planning tool
• Durable, weather-resistant aluminum housing
• Single cable connection for quick hookup

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MOUNTING SPRAYER COMPONENTS
Pressure Regulator in Bypass Mode
All pressure regulating valves for the 844 will be wired for use in a
by-pass system. While plumbed in a by-pass mode, with the Auto/
Man key in the “MAN” mode, the valve should close when the
key is pressed and open when the key is pressed.
The pressure regulating valve can also be mounted in a throttling
situation as an alternative location. Refer to page 5, and Figures
1-3 and 1-4.
NOTE: The diagrams in Figures 1-1 and 1-2 are shown as general
guidelines to follow when plumbing the 844 components.
The type of pump used and location of other components
can vary from sprayer to sprayer. It is important to ensure
that if a pressure transducer is used, it is located as close
to the spray tips as possible. Normally, this is at the boom
control valves. However, if one particular boom section is
always used, the pressure transducer can be mounted on
that particular boom section. If a flow meter is used, make
sure that all of the flow going through the flow meter is
directed to the spray tips. Make sure that proper distance
is allowed on the inlet and outlet side of the flow meter
(refer to figures 1-2 and 1-3).

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Figure 1-1: Bypass Plumbing Diagram - Pressure Based System
Figure 1-2: Bypass Plumbing Diagram - Flow Based System

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Pressure Regulator in Throttling Mode
The pressure regulating valve, as shown in the figures below, can be located in the supply line before the boom
control valves. If you choose this location, the 844 will need to be properly programmed to reverse the polarity of
the valve. This step can be found in the System Setup instructions on page 23. When in throttling mode, the valve
should open when the key is pressed, and close when the key is pressed. Be sure to check this before
plumbing the valve into the system.
Figure 1-3: Throttling Plumbing Diagram - Flow Based System
Figure 1-4: Throttling Plumbing Diagram - Pressure Based System

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Flow Meter
To ensure accurate readings, the flow meter (if used) must be
mounted 10″to 12″(25-35 cm) from other pipe fittings, preferably
in a vertical position with the flow going up. It should also be
mounted with the direction of flow arrow pointing toward the boom
control valves. Refer to Figures 1-2 and 1-3.
Be sure the flow meter is plumbed so that all liquid passing
through it is routed to the booms and not back to the tank. When
using three-way boom control valves, refer to page 25 of this
manual for programming guidelines.
Boom Control Valves
The Boom Control Valves are connected in tandem and centered
in front of the boom sections. See the Control Valve Instruction
Manual for mounting instructions. If using three-way valves, refer
to the instruction manual of the valves you are using for valve
calibration instructions.
Pressure Transducer
The pressure transducer (if used) should be installed as close to
the spray tips as possible. Normally this is at the boom control
valve assembly. Refer to Figures 1-1 through 1-3. Mount the unit
vertically on a short stand pipe to help protect the sensor.
NOTE: Pressure drop, to some degree, is found in most plumbing
systems. Pressure drop is created when there is any kind
of restriction in the spray line that reduces flow rate and
is quite often produced between the boom control valve
assembly and the spray tips. If one of the boom sections
on the sprayer is always used, the pressure transducer
can be installed on that particular boom section,
minimizing any potential pressure drops between the
sensor and spray tips. If the pressure drop in your system
is greater than 5 psi (0.3 bar), you should consider this as
an alternative location for the pressure transducer.
Check all components to make sure they are mounted securely to
avoid excessive vibration.

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INSTALLING THE SPEED SENSOR ASSEMBLY
Components
Two (2) magnets, Sensor with attached connector cable, and mounting hardware. If
you are installing a radar ground speed sensor, follow the instructions supplied with
that unit.
Speed Step 1 - Location
The speed sensor assembly should be installed on a non-driven wheel to avoid
potential errors that are likely to occur from a slipping drive wheel. Refer to Figure 1-6.
Proximity Sensor (optional)
An optional proximity sensor is available to use in cases
where space is limited or for drive shaft mounting.
The proximity sensor will work by sensing any metal object.
The proximity sensor must be mounted so that the sensor face
is within 1/8″to 3/8″(3-10 mm) of the metal object being read.
CABLE
MAGNET
RIM
SENSOR
TIRE
NOTE:
TARGET FACES
TIRE LUGS
Figure 1-5: Wheel Mounting of Magnetic Speed Sensor
Figure 1-6: Wheel Mounting of Speed Sensor

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Speed Step 2 - Installing The Wheel Magnets
Check for pre-drilled holes in the wheel rim. If pre-drilled holes are not available, layout a pattern as shown in
Figure 1-7 and drill two 3/8″(10 mm) holes near the outer edge of the rim if possible, and 180° from each other.
Place the magnets into each of the two holes on the inside rim and securely fasten them using the nuts and
washers provided.
Figure 1-7: Magnet Locations
TIRE
WHEEL
3/8Ý(10 mm)
HOLE FOR
MAGNET
Figure 1-8: MagnetAssembly
NUT
NUT
MAGNET
WASHER

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Speed Step 3 - Installing the Magnetic Sensor
The flat, pressed L bracket of the wheel speed sensor kit should be secured to a vertical member near the
non-driven wheel. The round, right angle steel bracket is then secured to the flat bracket with the two U-bolts
and necessary hardware provided. The round, right angle bracket is then used to secure the magnetic sensor
mounting clamp.
The magnetic sensor should be inserted into the mounting clamp and positioned within 1/8″to 3/8″(3-10 mm) of
the wheel magnet. Tighten the sensor clamp using the clamp screw per Figure 1-10.
Your installation will likely vary from the example. It may be necessary to customize the installation to
accommodate your specific machine. Keep in mind that the two magnets must be spaced an equal distance
around the wheel. The magnetic sensor must be mounted in-line with the magnets and positioned within 1/8″to
3/8″(3-10 mm) from each magnet as they pass the Sensor assembly.
Figure 1-9: Sensor Mounting Figure 1-10: SensorAssembly
CLAMP
SCREW
SENSOR
BRACKET
FLAT
L BRACKET

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Speed Step 4 - Conrming Speed Sensor Installation
Magnetic Wheel Sensor
After your wheel or proximity sensor is installed and once the 844 console is installed and powered up, you
can test the speed sensor installation. Connect the wheel speed or proximity sensor to the sensor cable, and in
turn connect the sensor cable to the 844 console. When the connection is made, rotate the wheel on which the
magnets are installed. If using a proximity sensor, you will be sensing metal objects and not magnets. Each time a
magnet (metal object for proximity sensor) passes the sensor a red LED (orange LED for proximity sensor) on the
back of the sensor will light. The LCD display on the console will also indicate a speed as the sensor receives and
sends electronic pulses.
Radar
If you are using a radar speed sensor it should be connected to the speed sensor connector on the sensor
end cable. An adapter cable will be necessary when using most radars and are available through your TeeJet
Technologies dealer. The 844 will automatically sense if the speed sensor is a wheel speed, proximity type or
radar type sensor during calibration. The 844 is automatically adapted to most brands of radar speed sensors
provided that the appropriate adapter cable is used. If using a radar sensor, the 844 will display rAd during the
calibration procedure.

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MOUNTING THE TEEJET 844 CONSOLE
Console Step 1 - Location
Determine the best location for the control console in the cab or operator’s compartment. Allow sufficient
clearance, approximately 4-5″(10-12 cm) to accommodate for the cable that will be connected to the right side of
the console.
Console Step 2 - Mounting
Mount the console to a firm support within the cab area, and secure using the slots provided on the top, back, or
bottom of the Console. Although two simple brackets are supplied with the unit, some additional bracketing may
be necessary. The slots in the 844 will accept 1/4″(6 mm) bolts.
Figure 1-11: Brackets ProvideAngleAdjustment

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Console Step 3 - Power Connection
Locate the power cable that has a black connector on one end and two battery terminal rings on the other. Extend
the battery terminal ring end of this cable from the cab to the battery.
NOTE: Some tractors use two 6 Volt batteries as a power source. Make sure there are a total of 12 Volts
delivered to the controller by connecting to the (+) terminal on one battery and the (-) terminal on the other
battery. Reliable operation of the 844 Sprayer Control depends on a clean power supply. Ensure this by
connecting the power cables directly to the battery and not to another power source.
Connect the battery terminal rings to the battery posts, making sure that the positive (red) and negative (black)
wires correspond with the polarity of the battery terminals.
NOTE: The power cable is designed to provide the simple addition of a remote master boom switch in a
convenient location (i.e. on the throttle, gear shift, or floor switch). To install a remote boom switch, simply
install a switch to the brown wire in the power cable. The switch should be rated to handle the total current
used by all boom section valves combined. If installed, the remote master switch will operate in series with
the boom switches on the console.
Connect the battery cable to the power cable lead that extends from the main cable.
Test the installation by pressing the key once to turn the 844 console on. If the display shows information, you
have wired the power correctly.
NOTE: TheTeeJet 844 Sprayer Control has an automatic power down feature. With the master boom switch
in the “off” position, the 844 will automatically shut down after 10 minutes of no inputs.This prevents
possible battery drainage. To turn the console “off” with the Master Switch located in the “off” position,
press and hold the key while pressing the key once, and then releasing both keys. The console
will shut down providing no other keys are pressed.

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Figure 1-12: Power Connection

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Console Step 4 - Connecting Component Cables
Now that you have the console installed you can begin connecting it to the other components of the 844 system.
The standard kit contains a main cable that attaches to the boom control valves, the pressure regulating valve,
flow meter and/or pressure sensor, a magnetic wheel speed sensor, and a proximity speed sensor or radar speed
sensor. Lay out each of the valve and sensor leads before installing the sprayer components to be sure the cables
are long enough in length from the sensor connections to the 844 console connection. If your installation requires
longer cables, several extension cables are available. If an exit hole has to be cut in the cab, be sure the edges
are deburred and protected to prevent damage to the cables.
Figure 1-13: Wiring Diagram
844 SPRAYER CONTROL
TANK
POWER
JET AGITATOR SPEED SENSOR
SOLENOID VALVES
BOOM SECTIONS
STRAINER
TANK SHUT-OFF
CENTRIFUGAL
PUMP
AGITATOR
VALVE
PRESSURE
TRANSDUCER
(IF USED)
PRESSURE
REGULATING
VALVE
10-12Ý
(25-35 CM)
5-7Ý
(12-17 CM)
FLOW METER
(IF USED)
COMMUNICATION
CABLE CONNECTION
MAIN CABLE
CONNECTION

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Connect Step 1 - Wiring Layout
Determine the best cable routing to the sprayer control components on the sprayer. This may be along the flow
line, main frame of the sprayer, or wherever the cables can be conveniently secured. Avoid any situation where
the cables may lay in puddles, or come in contact with extreme heat sources.
WARNING: System Components should be mounted at least 3 ft / 1 m from areas of excessive vibration
(i.e. engines) to avoid high frequency interference.
Figure 1-14: Wiring Layout