TeeJet 844-R User Manual
844-R
Speed Compensated
Application Control
User Guide
98-05047
R0
Table Of Contents
TABLE OF CONTENTS ............................................................................................................................. 2
INSTALLING THE SPEED SENSOR ASSEMBLY ................................................................................ 4
TEP
S
TEP
S
TEP
S
TEP
S
POWERING CONSOLE ON/OFF............................................................................................................. 7
OWER ON
P
OWER OFF
P
OPERATING INSTRUCTIONS................................................................................................................. 8
PPLICATOR CHECKOUT
A
HE SPRAYING OPERATION
T
FEATURES................................................................................................................................................. 10
REA/VOLUME DISPLAY
A
PPLICATION ALARM
A
NO F
LOW RATE FEATURE
F
OOST MODE
B
UTO POWER DOWN
A
OCATION
1 - L
Proximity Sensor (optional).................................................................................................................. 4
NSTALLING THE WHEEL MAGNETS
2 - I
NSTALLING THE MAGNETIC SENSOR
3 - I
ONFIRMING SPEED SENSOR INSTALLATION
4 - C
Magnetic Wheel Sensor......................................................................................................................... 6
Radar .................................................................................................................................................... 6
.................................................................................................................................................. 7
................................................................................................................................................ 7
LOW ALARM
Boost Up ............................................................................................................................................. 12
Boost Down......................................................................................................................................... 12
.................................................................................................................................... 4
.............................................................................................. 5
........................................................................................... 5
................................................................................ 6
............................................................................................................................ 8
........................................................................................................................ 9
.......................................................................................................................... 10
............................................................................................................................... 10
..................................................................................................................................... 11
............................................................................................................................... 11
........................................................................................................................................... 12
................................................................................................................................13
PROGRAMMING GUIDELINES............................................................................................................ 14
MPORTANT PRELIMINARY INFORMATION
I
SYSTEM SETUP MODE – TEEJET 844-R CONTROLLER............................................................... 14
ELECTION OF WORKING UNITS
S
ESET TO DEFAULTS
R
LOW METER PULSES
F
IP SPACING
T
# OF T
PEED SENSOR CALIBRATION
S
Proximity/Magnetic Pulses ................................................................................................................. 17
FLOW METER CALIBRATION............................................................................................................. 19
ETHOD
M
Step 1 – Known Value......................................................................................................................... 19
Step 2 – Programming Calibration Number....................................................................................... 19
Step 3 – Resetting Volume Counter..................................................................................................... 19
Step 4 – Spraying Known Volume....................................................................................................... 19
Step 5 – Entering a New Flow Meter Calibration Number................................................................. 20
Step 6 – Double-checking the New Value ........................................................................................... 20
ETHOD
M
Step 1 – Check Tip Size....................................................................................................................... 20
Step 2 – Count Tips............................................................................................................................. 20
Step 3 – Calculated Flow.................................................................................................................... 21
............................................................................................................................................. 16
IPS
.................................................................................................................................................. 16
1 – K
2 – K
................................................................................................................................15
............................................................................................................................... 16
NOWN VOLUME
NOWN TIP SIZE METHOD
.............................................................................................................. 15
................................................................................................................... 17
................................................................................................................ 19
................................................................................................ 14
.................................................................................................. 20
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Step 4 – Measure................................................................................................................................. 21
Step 5 – Adjustments ........................................................................................................................... 21
ISTANCE COUNTER
D
IMULATED GROUND SPEED
S
How To Use ........................................................................................................................................ 23
OMMUNICATIONS
C
INIMUM PRESSURE SETTING
M
................................................................................................................................22
.................................................................................................................... 22
................................................................................................................................... 23
.................................................................................................................. 24
APPLICATION SETUP MODE............................................................................................................... 24
ARGET APPLICATION RATE
T
LOW RATE SELECTION
F
ALCULATION STEPS
C
Known Speed Calculation................................................................................................................... 25
Known Pressure Calculation .............................................................................................................. 26
DAILY FLOW METER MAINTENANCE............................................................................................. 26
TROUBLESHOOTING GUIDE............................................................................................................... 27
QUICK REFERENCE GUIDE................................................................................................................. 29
YSTEM SETUP MODE
S
PPLICATION SETUP MODE
A
EATURES
F
................................................................................................................................................. 30
................................................................................................................................25
.................................................................................................................... 24
........................................................................................................................... 25
.............................................................................................................................. 29
...................................................................................................................... 30
98-05047 3
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Installing the Speed Sensor Assembly
Components: Two 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.
S
TEP
1 - L
OCATION
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)
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 works by sensing any metal object.
Mount the proximity sensor so that the sensor face is
within 1/8 to 3/8 inch of the metal object being read.
(Refer to Figure 2)
MAGNET
RIM
CABLE
SENSOR
Figure 1
Wheel Mounting
of Magnetic
Speed sensor
TIRE
NOTE:
TARGET FACES TIRE
LUGS
4 98-05047
Figure 2
R0
S
TEP
NSTALLING THE WHEEL MAGNETS
2 - I
Check for pre-drilled holes in the wheel rim. If pre-drilled holes are not available,
layout a pattern as shown in figure 3 and drill two 3/8 inch holes, locating them
near the outer rim, if possible, and 180° from each other.
Place the magnets into each of the two holes on the inside rim and securely
fasten using the nuts and washers provided. (See Figure 4)
3/8” (10 mm)
HOLE FOR
MAGNET
WHEEL
TIRE
Figure 3
Magnet Locations
NUT
WASHER
NUT
MAGNET
Figure 4
Magnet Assembly
Sensor
S
TEP
NSTALLING THE MAGNETIC SENSOR
3 - I
Secure the flat, pressed L bracket of the wheel speed sensor kit to a vertical
member near the non-driven wheel. Then secure the round, right angle steel
bracket to the flat bracket with the two U-bolts and necessary hardware provided.
Use the round, right angle bracket to secure the magnetic sensor mounting
clamp. (See Figure 5)
Insert the magnetic sensor into the mounting clamp and
position it to within 1/8 to 3/8 inch of the wheel magnet.
Tighten the sensor clamp using the clamp screw per
Figure 5A.
Figure 5
Sensor Mounting
98-05047 5
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Figure 5A
Sensor Assembly
Sensor
Clamp
Screw
Flat
L Bracket
Bracket
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 inch to 3/8 inch from each magnet as they pass the
sensor assembly.
S
TEP
4 - C
ONFIRMING SPEED SENSOR INSTALLATION
Magnetic Wheel Sensor
After the wheel or proximity sensor is installed and the 844-R console is mounted
and powered up 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-R console. When the connections are 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 a radar speed sensor is used, connect it 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 844-R dealer. The 844-R will automatically
sense if the speed sensor is a wheel speed, proximity type, or radar type sensor
during calibration. The 844-R 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-R will display rAd during the calibration procedure.
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Powering Console On/Off
OWER ON
P
To power the 844-R on press the
P
RO
Initially the console displays the
software version in the top
display.
After 5 seconds the display shows
the normal operating view.
OWER OFF
P
To manually power the console
off, press the and
simultaneously.
The console saves any new
information (area and volume
counters) to memory and powers
off.
key once.
P
RO
keys
SFt
1.04
OFF
Ha
The console also has an Auto Power Down feature. When the master
switch is “off”, and no buttons are pressed for approximately
10 minutes, the 844-R will automatically power down.
Note: Both “Delivery” and “Agitation” switches still power either pump
even if console is “off”.
98-05047 7
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Operating Instructions
PPLICATOR CHECKOUT
A
Before spraying, check all connections related to the Control System. Be sure
connections are made and the sensors and cabling are properly secured.
Very Important: Whenever working around chemicals, be sure to wear
protective clothing and eyewear.
Partially fill the applicator tank with water to purge the system of air and to make
a visual check of the liquid outlets to be sure liquid is exiting each outlet as
intended.
Follow these steps, in sequence, being sure the Delivery Switch is in the “OFF”
position:
Be sure the tank shut-off valve is open.
Switch the computer on by pressing the
Press the Auto/Man key so that the red LED light indicates “MAN”
mode.
Now, toggle the Delivery switch to “ON”.
Adjust the pressure with the + and keys. The pressure should
increase when you press the + key and decrease when you press the
key.
At this point, the applicator is activated and each micro-tube or orifice can be
checked.
Now press the Auto/Man key so that the red LED light indicates “Auto”
mode. The control console should regulate to the target application rate
for the simulated speed indicated. See “Simulated Ground Speed” in the
System Setup section of this manual for instructions on using simulated
speed.
To stop applying, toggle the Delivery switch to “OFF”.
The above steps provide a quick way to check out your applicator and control
system.
P
RO
key.
8 98-05047
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HE SPRAYING OPERATION
T
The sprayer tank is filled and the solution thoroughly mixed. The application rate
and proper nozzles have been determined. The controller has been
programmed with the sprayer and application information.
P
Turn the control console on by pressing the
RO
key.
The Auto/Man key should be switched to “AUTO”.
In the Auto mode, when the Delivery switch is “OFF”, the target application
rate as well as the target symbol is displayed on the console display.
When the Master boom switch is “ON”, the actual rate is displayed and the
target symbol no longer appears.
While spraying with the Delivery switch “ON”, the display always displays
the actual application rate, vehicle speed, application area covered/total
volume applied and calculated pressure. Note: If the application system is
equipped with pressure gauge, the pressure gauge may read differently
than the calculated pressure shown on the console. This does not
necessarily indicate a problem.
As you get to the point where application will begin, turn the Delivery
switch to the “ON” position. This activates the delivery pump. Moderate
changes in vehicle speed don’t affect your application rate, because such
changes are compensated for with automatic pressure adjustments by the
controller.
If it is necessary to stop, turn the Delivery switch to “OFF”.
Alarm warnings may occur momentarily while the pressure regulating valve is
searching for a new setting after a significant speed or rate change. However, if
the alarm stays on for a longer time, the valve may have reached its limit and
your system is unable to regulate flow beyond the limit.
98-05047 9
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Features
REA/VOLUME DISPLAY
A
The 844-R Sprayer Control counts application area and measures the total
volume applied while the master boom switch is in the “ON” position.
The area counter measures treated acres and is dependent on the values
programmed for the # of outlets and the tip spacing.
The volume measure is dependent on the signal from the flow meter.
The lower right of the display window shows:
Volume Sprayed and Area
Covered (alternating every 3
seconds).
To clear the area counter/volume
measure:
Be sure the Delivery switch is in
the “OFF” position
Press and hold the + or
keys for 3 seconds.
Note: The area/volume measure can only be cleared with Delivery switch
turned “OFF”.
15
PSI
0.0
MPH
2.0
56.25
GPA
Ac
PPLICATION ALARM
A
If the 844-R senses a continuous
discrepancy of 10% or more between
the Target Application Rate and the
Actual Application Rate:
The application rate units flash.
This alerts the operator to a
problem with the applicator,
plumbing, operation or
programming.
10 98-05047
30
PSI
7.0
MPH
2.5
530
GPA
R0
Vol
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