TeeJet 844-AB User Manual
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TeeJet 844-AB User Manual

Sprayer control
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Summary of Contents for TeeJet 844-AB

  • Page 2: Chapter 1 - Introduction

    Program key for 3 seconds. The inputs are stored and the computer will exit Program Mode. The 844-AB console can be powered on by To increase the value of a programmable pressing the Program key one time. The digit, press the Plus key. To decrease the console will initially display the software value, press the Minus key.
  • Page 3 Power Off the Console To power off the 844-AB console, press and release the Minus and Program keys simultaneously. The console will save new information (area and volume counters) to memory before it powers down. “Off” will be displayed on the console, followed by a 5-second countdown, indicating the console is about to power down.

  • Page 4: Chapter 2 - Application Mode

    Vineyard mode Chapter 2 – Application mode This mode is designed to work with vineyard The 844-AB gives the possibility of working in sprayers that are spraying horizontally. two different ways to fit the application. Several rows are covered and sections can be Therefore, the console should be set up and switched on or off to adapt the working width.

  • Page 5: Chapter 3 - Oem Setup

    Application type 1 2 3 4 5 6 7 8 9 10 11 12 As explained above, the 844-AB is capable of working in either Airblast (AB) or Vineyard Minimum voltage (HC) mode. This will determine the minimum voltage that Use the Plus and Minus keys to switch from can be applied to the regulation valve.

  • Page 6: Rotation Speed

    Figure 3-5: Rotation speed 2134 2134 2134 2134 6 6 6 6 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 844-AB Sprayer control Software 4.03...

  • Page 7: Maximum Speed

    This feature enables the user counters. Select NO to disable this feature or YES to enable it. Figure 3-9: Memory option NO NO NO NO 1 2 3 4 5 6 7 8 9 10 11 12 844-AB Sprayer control Software 4.03...

  • Page 8: Chapter 4 - System Setup

    Units of Measurement Note: The 844-AB is capable of working in either If changes were not made to Units of US, SI (Standard International metric) or SI - Measurement, this step will be skipped and l/100 m units.

  • Page 9: Sensor Selection

    Figure 4-4: Sensor Selection Sensor Selection The 844-AB can accommodate a flow meter, pressure transducer, or both. Sensor Selection instructs the console which sensor is being used on the sprayer. The default value is “FLO” (flow-based system) using a flow meter. To maintain this setting,...

  • Page 10: Automatic Calibration

    Calibration (P Ref) The Pressure Transducer Low Pressure Calibration step is used to calibrate the “0” pressure setting of the pressure transducer. The pressure transducer used with the 844-AB uses a 4-20 mA reading 23 23 23 23 2777 2777 2777 2777 (4.0 mA represents 0 pressure).
  • Page 11 Press the Program key to advance to the next step. p p p p hi hi hi hi 9 9 9 9 1 2 3 4 5 6 7 8 9 10 11 12 844-AB Sprayer control Software 4.03...
  • Page 12 The speed sensor must be calibrated in order begin the calibration process. Continue driving to provide the proper speed and area the course. The 844-AB will count the pulses readings. The value is determined by the as the sprayer moves. The speed at which the number of pulses generated by the speed vehicle travels is not important.
  • Page 13 To manually calculate the proper value for begin the calibration process. Wheel Speed Sensor pulses, the Continue driving the course. The 844-AB will circumference of the wheel to which the count the pulses as the sprayer moves. The sensor is mounted must be known. It can be...

  • Page 14: Simulated Ground Speed

    This can and should be tested prior to any speed; press the Program and Plus keys for spraying activity. high simulated speed. The 844-AB has a low and high simulated NOTE: ground speed. This allows the operator to The simulated speed feature will be...
  • Page 15 The flow rate for each section of the sprayer The flow rate for a single nozzle must be input must be input into the 844-AB console so that into the 844-AB console so that the necessary the necessary adjustments can be made adjustments can be made when boom when boom sections are shut off.
  • Page 16 Up to twelve preset flow configurations can be Figure 4-22: Reference Pressure entered into the 844-AB. The presets are represented by the numbers “1-12” at the bottom of the display. The arrow symbol indicates which preset is being programmed. 10 10 10 10..0 0 0 0 Select which preset flow configuration to program.
  • Page 17 9.5. The first digit establishes the speed for coarse adjustments (when relatively far from the target rate). The second digit establishes the speed for the fine adjustment (when relatively close to the target 844-AB Sprayer control Software 4.03...
  • Page 18 Once the bypass mode is selected and the console is set to “manual” mode, the To avoid these situations, the 844-AB can be pressure regulating valve should close programmed to avoid regulating below the when the Plus key is pressed and open pressure established with this setting.
  • Page 19 4 5 6 7 8 9 10 11 12 displayed, all calculations will use the specific gravity of water (1.00) regardless of whether another density was programmed or not. Refer to Application Setup mode for additional information. 844-AB Sprayer control Software 4.03...
  • Page 20 1 2 3 4 5 6 7 8 9 10 11 12 If the 844-AB has not been upgraded with the communication package, no change is required. If a change is necessary, press the Plus or Minus keys to select the type of communication used.

  • Page 21: Chapter 5 - System Setup Additional Steps For Hc Mode

    4 5 6 7 8 9 10 11 12 Use the Plus or Minus keys to adjust the value. Press the Program key to advance to the next program step. This step will repeat for each section. 844-AB Sprayer control Software 4.03...

  • Page 22: Chapter 6 - Swath Width Presets

    Chapter 6 - Swath Width Presets 1 1 1 1 The 844-AB can be programmed with up to 6 swath widths. This allows the operator to easily change from one swath to another - - - - 4 4 4 4 - - - - 5.00 0 0 0...

  • Page 23: Chapter 7 - Application Setup

    Chapter 7 - Application Setup Application Setup mode contains the most frequently changed setup parameters (target 9 9 9 9 application rate and nozzles used). TeeJet has added this separate setup mode to speed the programming process when minor 3 3 3 3 changes are made during operation (e.g.,...
  • Page 24 THIS STEP IS USED FOR DIAGNOSTIC the speed must increase. PURPOSES ONLY. It has no affect on the operation of the 844-AB. This diagnostic tool Figure 7-6: Adjust Speed will allow the operator to adjust the indicated pressure to see what affect, if any, it would have on operating speed.
  • Page 25 1.28 1.28 Application Setup mode will be stored in the console’s memory. NOTE: The 844-AB console will not automatically power down during Application Setup 1 2 3 4 5 6 7 8 9 10 11 12 mode. The system must be exited by holding the Program key for three seconds.

  • Page 26: Chapter 8 - Operations

    • Press the Program and Minus keys the RPM to the level to be used during application. simultaneously during spraying to switch • Power on the 844-AB by pressing the the console to “low” simulated speed. The Program key. 844-AB should adjust to the appropriate •...
  • Page 27 Fill the sprayer tank and mix the chemical(s). The application rate should already be 9 9 9 9.0 .0 .0 .0 programmed, as well as the spray nozzle size. L/Ha • Power on the 844-AB by pressing the 0.410 0.410 0.410 0.410 Program key.

  • Page 28: Chapter 9 - Features

    Area/Volume Display Example: To increase the application rate by 10%, The 844-AB records application area and press the Plus key once to activate Boost measures the total volume applied while the mode. Press the Plus key again to initiate a Master Boom Switch is in the “ON ”...

  • Page 29: Automatic Power Down

    Master Boom Switch is in Automatic Power Down the “On” position. Application Alarm The 844-AB console is designed to power off after 10 minutes of inactivity. This feature prevents the console from draining the battery If the 844-AB detects a continuous...
  • Page 30 TeeJet Technologies suppliers. The printout generated by the 844-AB contains information collected from 844-AB memory. To ready the 844-AB for printing, refer to Communications in System Setup mode and select either “user prt ” or “cnt prt ” depending on which report is desired. Exit the mode by pressing and holding the Program key for three seconds.
  • Page 31 1801 Business Park Drive Springfield, Illinois 62703 USA (217) 753-8424 www.teejet.com 844-AB Sprayer control Software 4.03...

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