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TeeJet 855 Installation And Operating Manual

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Summary of Contents for TeeJet 855

  • Page 1 Installation, Programming and Operating Manual...

  • Page 2: Table Of Contents

    Area/Volume Feature Flow Rate Feature Application Alarm No Flow Alarm Printing Troubleshooting Guide 32-34 Flow meter Calibration 35-36 Flow meter Maintenance Inside Back Cover Terms and Conditions of Sale Inside Back Cover TeeJet is a registered trademark of Spraying Systems Co.

  • Page 3: Introduction

    Color-Coded Tip Selection Bar boom sections. This allows better allows for easy user programming management of varying field features, by matching the color of TeeJet such as waterways and terraces. VisiFlo spray tips. • Full-featured sprayer control with industry-leading ease of use •...

  • Page 4: Sprayer Control Installation

    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.

  • Page 5: Pressure Regulator In Throttling Mode

    PRESSURE REGULATOR IN THROTTLING MODE The pressure regulating valve, as shown in Figures 8 and 8A, 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 17.

  • Page 6: Flow Meter

    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 direction of flow arrow pointing toward the boom control valves.

  • Page 7: Installing The Speed Sensor Assembly

    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. Location S P E E D S T E P The speed sensor assembly should CABLE be installed on a non-driven wheel to...
  • Page 8 Installing the Wheel Magnets S P E E D S T E P Check for pre-drilled holes in the wheel rim. If pre-drilled holes are not available, layout a pattern as shown in Figure 4 and drill two 3/8 inch (10 mm) holes, locating them near the outer edge of the rim, if possible and 180°...

  • Page 9: Mounting The Teejet 844 Console

    An adapter cable will be necessary when using most radars and are available through your TeeJet 844 dealer. The 844 will automatically sense if the speed sensor is a wheel speed or proximity type or radar type sensor during calibration.
  • Page 10 844 console on. If the display shows information, you have wired the power correctly. Note: The TeeJet 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.
  • Page 11 Connecting Component Cables CONSOLE S T E P 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, and a magnetic wheel speed sensor, proximity speed sensor or radar speed sensor.

  • Page 12: Component Wiring

    Wiring Layout CONNECT S T E P Determine the best cable routing to the sprayer control components on the sprayer. This could 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.
  • Page 13 Note: The 844 is designed to handle a maximum of 4 amps per boom section. You are now ready to begin the programming of the TeeJet Model 844 Sprayer Control. Valves requiring DPDT switches are not compatible with the 844.

  • Page 14: Programming Guidelines

    Programming Guidelines IMPORTANT PRELIMINARY INFORMATION Before you begin, we recommend that you review the following Programming Guidelines that control the programming process: For your convenience, the programming of the 844 has been divided into two programming categories; System Setup Mode and Application Setup Mode.

  • Page 15: Steps To Successful Programming

    Steps to Successful Programming To begin the programming process: Read above for programming tips. Be sure the “master” boom switch is “OFF.” Turn console “ON” by pressing the key. When the Control Console is turned on, the software version will be displayed at the top of the display and the serial number will be displayed in the lower half of the display.

  • Page 16: Reset Defaults

    Reset Defaults? RESET If the units in the first programming step have been changed, the console will ask DEFAULTS 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 keys to rES .

  • Page 17: Pressure Transducer Maximum Rating (P Hi)

    Pressure Transducer Maximum Rating (P Hi) P Hi Default = 150 (psi in US, trF and INP Modes) Default = 10.0 (bar in SI Mode) This step is used to set the maximum rating of the pressure transducer in your system.

  • Page 18: Number Of Spray Tips Per Boom Section

    Number of Spray Tips Per Boom Section TIPS PER BOOM Default = 6 (tips per section in US, trF, iNp and SI Modes) SECTION Default = 12 (tips per section 1, 0 for the others in nh3 Mode) While in the Tips Per Boom Section step, the symbol will be flashing at the top of the console display.

  • Page 19: Pressure Regulating Mode

    Warning: If the user is using tips other than the TeeJet ® ‚ VisiFlo ® ‚ brand, the corresponding colors may not match. In this case, the user should determine the flow rate of the tip being used at 40 psi (2 bar), and enter this flow rate as the programmable tip.

  • Page 20: Regulation Adjustment Speed

    If your system is plumbed in a bypass mode, the valve speed number of 9 works very well in most applications. If your system is plumbed in a throttling mode, start with a valve speed number of 3 and adjust the number according to your application requirements. Low flow situations will require a slower response time.

  • Page 21: Boom Control Valve Type

    Boom Control Valve Type CONTROL VALVE Default = 2 Way TYPE While in the Boom Control Valve Type step, the symbol will be flashing at the top of the display. The programmable information (2 Way or 3 Way) will be displayed at the left in the console display.
  • Page 22 Note: Once the auto calibration mode has been activated, no other functions of the 844 are possible until the console receives speed impulses for calibration. To deactivate the auto calibration mode, press the key twice. During the automatic calibration step, the 844 automatically senses if a radar ground speed sensor is installed.

  • Page 23: Distance Counter

    Distance Counter DISTANCE Default = 0 COUNTER This step is a feature, not a calibration step. No specific value needs to be ft O entered here for the controller to operate correctly. This feature will measure distance in feet (meters). This can be used to measure fields, fence lines or to confirm Automatic Speed Calibration.

  • Page 24: Liquid Specific Gravity

    Liquid Specific Gravity (Density) PROGRAM SPECIFIC Default = 1.00 GRAVITY While in the Liquid Specific Gravity (Density) Programming Step, the symbol, will be flashing at the top of the console display. The default value of “1.00” corresponds with the specific gravity of water and is correct for most pesticide applications.

  • Page 25: Minimum Regulating Pressure Setting

    To avoid these situations, the TeeJet 844 can be programmed to not regulate below the pressure set in this step. If this step is set for the default of 10 PSI (0.7 bar), the pressure will not go below 10 PSI (0.7 bar) while spraying in...

  • Page 26: Application Setup Mode

    Target Application Rate step except the symbol will be flashing at the bottom of the display just above a color coded strip. NOTE: The tabbed color strip along the bottom of the display represents color coding for TeeJet ® VisiFlo ®...

  • Page 27: Calculation Step

    STEP This Programming Step is a diagnostic tool only and has no effect on the operation of the TeeJet 844 Sprayer Control. It allows the user to adjust the PSI vs. indicated pressure to see what effects it would have on the operating speed;...
  • Page 28 Application Setup sequence to make any changes by pressing the key once. If no changes are necessary, you have completed the Application Setup Mode of the TeeJet 844 Sprayer Control. NOW, PRESS AND HOLD THE KEY FOR THREE SECONDS, AND THE ENTIRE APPLICATION SETUP MODE WILL BE STORED IN THE COMPUTER’S MEMORY.

  • Page 29: Operating Instructions

    Operating Instructions SPRAYER CHECKOUT Before spraying check all connections related to the Sprayer Control assembly. Particular attention should be given to the speed sensor to be sure the sensor and magnets are inline, and properly secured. Very important: Whenever you are working around a sprayer or farm chemicals, be sure to wear protective clothing and eyewear.

  • Page 30: The Spraying Operation

    THE SPRAYING OPERATION You have filled the sprayer tank and have thoroughly mixed the chemical(s). Your application rate has been determined as well as the spray tip you will be using, with the sprayer data programmed into the computer. Switch the computer on by pressing the key on the display panel.

  • Page 31: Features

    Features BOOST MODE There may be instances where ”on the go” increased or decreased chemical application may be required in certain areas of your field. In situations like this, keys will allow you to easily make the necessary adjustments. The boost mode can be activated while spraying in the Auto mode by pressing either the key once.

  • Page 32: Flow Rate Feature

    Features FLOW RATE FEATURE The 844 Sprayer Control will measure a flow rate moving through the flow meter in GPM (LPM) {Imp GPM}. This feature is activated by pressing and holding the key while spraying in the normal operating mode. The flow rate display replaces the area/volume display in the lower right portion of the display.

  • Page 33: Printing

    PRINTING Optional printers are available for printing a spraying report directly from the 844. The optional printers are available through your TeeJet supplier. The printout that you get from the 844 contains memory information that the 844 collects. A sample of this printout is below.

  • Page 34: Troubleshooting Guide

    C Plugged Tips In the event of plugged nozzles, remove from boom and clean with water and a TeeJet brush. Take care not to damage the orifice. D Wrong capacity tips All tips on the boom should be of the same style, spray angle and capacity (Flow Rate).
  • Page 35 CONDITION POSSIBLE CAUSES SOLUTION E Flow meter plumbed incorrectly A flow directional arrow is located on the body of the flow meter. Plumb the flow meter with the arrow in the direction of the flow. The flow meter must be mounted 10˝ to 12˝ (25-35 cm) from other pipe fittings.
  • Page 36 CONDITION POSSIBLE CAUSES SOLUTION 6 Actual total volume applied in GPA, A Speed sensor not calibrated correctly. Recalibrate the magnetic or radar speed pulses in G/1000 ft , or l/Ha does not match the the Calibrate Speed section of the System Setup total area covered.

  • Page 37: Flow Meter Calibration

    Flow Meter Calibration The flow meter supplied with your system has been calibrated at the factory and under normal circumstances there may be no need to re-calibrate it. However, the factory calibration setup may not reflect specific sprayer plumbing. Before spraying actual chemicals, the flow meter should be checked for proper calibration.
  • Page 38 Flow Meter Calibration Example: If the volume displayed is 5% too high, then increase the flow meter calibration number by 5%. If the volume displayed is 5% too low, then decrease the flow meter calibration number by 5%. Method 2 – Known Tip Size Method Step 1 –...

  • Page 39: Flow Meter Maintenance

    (1) year after receipt of the goods by Buyer. (4) WARRANTIES The terms and conditions set forth herein, together with Claims respecting the failure of any TeeJet Automatic any other documents incorporated herein by reference Seller warrants that its products will conform to and per-...
  • Page 40 P.O. Box 7900 2733 East Ash Street Wheaton, Illinois 60189-7900 USA Springfield, Illinois 62703 USA Phone (630) 665-5000 • Fax (630) 665-5292 Phone (217) 753-8424 • Fax (217) 753-8426 tjtech@spray.com 8/00 MI844...

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