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Dickey-John GAC500XT, Operator'S Manual

The Dickey-John GAC500XT is an advanced grain moisture tester designed to provide accurate readings for farmers and grain processors. To ensure proper usage, it is essential to have the Operator's Manual on hand. Download the free manual from our website for step-by-step instructions and optimize the performance of your GAC500XT.

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TABLE OF CONTENTS

Safety Notices ......................................................................................................1

Introduction ..........................................................................................................3

Testing Samples (Quick Start) ...........................................................................................3
Features .............................................................................................................................3
Specifications .....................................................................................................................4

Installation And Setup .........................................................................................5

Removing Shipping Screws ...............................................................................................5
Unit Positioning ..................................................................................................................5
Power Connection .............................................................................................................6
Printing Capabilities ...........................................................................................................6

Startup ..................................................................................................................7

Switchpad Definitions ........................................................................................................7

Settings .................................................................................................................9

Units .................................................................................................................................10
Selecting Language .........................................................................................................10
LCD Contrast ...................................................................................................................11
TW Bias Access Code .....................................................................................................11
Output Options .................................................................................................................12

Measuring Moisture ...........................................................................................13

Preparing To Measure Moisture ......................................................................................13
Loading Hopper ...............................................................................................................14

Grain Selection ...................................................................................................17

Grain Calibrations ..............................................................................................19

Entering New Grain Calibrations .....................................................................................19
Modifying Grain Information .............................................................................................20

Diagnostics .........................................................................................................23

Cell Test ...........................................................................................................................23
Temperature ....................................................................................................................26
Weight Check ..................................................................................................................26
Display Test .....................................................................................................................28
System Information ..........................................................................................................28

Troubleshooting .................................................................................................29

Shipping And Transportation ...........................................................................................29
Cleaning And Care ..........................................................................................................29
Error Codes .....................................................................................................................30
Replacement Parts ..........................................................................................................35

11001-1352-200510

i

Summary of Contents for GAC500XT

Page 1: ...lecting Language 10 LCD Contrast 11 TW Bias Access Code 11 Output Options 12 Measuring Moisture 13 Preparing To Measure Moisture 13 Loading Hopper 14 Grain Selection 17 Grain Calibrations 19 Entering New Grain Calibrations 19 Modifying Grain Information 20 Diagnostics 23 Cell Test 23 Temperature 26 Weight Check 26 Display Test 28 System Information 28 Troubleshooting 29 Shipping And Transportation...

Page 2: ...TABLE OF CONTENTS ii 11001 1352 200510 ...

Page 3: ...ersonal injury or death Use of the word WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury Use of the word CAUTION with the Safety Alert Symbol indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury Use of the word CAUTION without the safety alert symbol indicates a potentially hazardous ...

Page 4: ...OPERATOR S MANUAL 2 SAFETY NOTICES GAC500XT 11001 1352 200510 ...

Page 5: ...ton to initiate empty cell measurements A progress bar will indicate measurement status 5 Fill the hopper strike the grain using the grain loader striker refer to Figure 16 and press the Enter button to initiate grain measurement Again a progress bar will indicate measurement status 6 Read the test results on the display Results include moisture temperature and test weight FEATURES Major features ...

Page 6: ...e and display an error message warning the operator that the readings do not necessarily meet unit specifications Unit grain temperature difference limit the maximum allowable difference between the empty cell and grain temperature is 20 C 36 F If the temperature range is exceeded the unit will measure moisture and display an error message warning the operator that the readings do not necessarily ...

Page 7: ...ating or shipping the GAC500XT the shipping screws must be replaced REMOVING SHIPPING SCREWS Once the GAC500XT is placed in a level location remove the shipping screws Make sure shipping screws are removed prior to operating the GAC500XT Failure to do so may permanently damage the unit Figure 2 Removing Shipping Screws GAC50 0XT TM Shipping Screws UNIT POSITIONING To achieve the most precise measu...

Page 8: ...RINTING CAPABILITIES The GAC500XT will print to a DICKEY john Strip Printer PRTS 110v and PRTSI 220v in a column format as illustrated in Figure 4 The output from the printer port Figure 3 is in RS 232 serial format 1200 baud 8 data bits no parity and 1 stop bit Figure 4 Example of GAC500XT Printout D I C K E Y J O H N CO R P G AC5 0 0 X T S N 000003 L INE WHEAT 910 828 MOIS T 1 2 5 T W 61 5 LB BU...

Page 9: ...ons are used to select menu items increment decrement digits or select characters Enter button ENTER BUTTON The Enter button is used to navigate into highlighted functions initiate actions or accept data ESC ESCAPE BUTTON The Escape ESC button is used to navigate to the previous screen Escape button RIGHT AND LEFT ARROW BUTTONS The Right and Left Arrow buttons are used to select digits or characte...

Page 10: ...OPERATOR S MANUAL 8 STARTUP GAC500XT 11001 1352 200510 ...

Page 11: ...trol settings are customizable to meet user needs Choose SETTINGS by highlighting it on the Main screen Figure 6 Press the Enter button Figure 6 Main Screen ENTER Enter button Corn Measure Select New Grain Calibration Settings Diagnostics Figure 7 Settings Screen Settings Units Language LCD Contrast TW Bias Access Code Output Options GAC500XT 11001 1352 200510 SETTINGS 9 ...

Page 12: ... the Settings screen Press the Enter button The selected language will be displayed with an asterisk next to the label Figure 9 Figure 9 Language Screen Home button Language English US Español Portugués Français Deutsch At the top right corner of the Language screen a downward pointing arrow will appear This indicates that more languages are available for selection than can fit on the screen The a...

Page 13: ...ss Code may be altered from the factory default which is set to 0000 This will ensure that only authorized personnel change the test weight bias For additional information on test weight bias refer to TEST WEIGHT BIAS To change the test weight bias access code access the TW BIAS ACCESS CODE option on the Settings screen Press the Enter button The Test Weight Bias Access Code screen will be display...

Page 14: ... Point Output Weight Output Temp Output Errors Print D1 D4 YES YES YES YES Left and Right Arrow Buttons Use the Up and Down Arrow buttons to navigate through the menu and the Left and Right Arrow buttons to select the desired output options Radix Point may be either a period or a comma The other selections are either YES on or NO off Once the desired input has been achieved press the Enter button ...

Page 15: ...o GRAIN SELECTION to choose the grain to be tested After choosing the proper grain continue with LOADING HOPPER Figure 13 Grain Selection Displayed Corn Measure Select New Grain Calibration Settings Diagnostics Choose MEASURE on the Main screen and press the Enter button A message indicating an EMPTY CELL TEST will appear on the display Figure 14 ENTER Figure 14 Empty Cell Test Enter button Empty ...

Page 16: ...TER LOADING HOPPER Make sure the Cell Dump Lever is in the upper position enabling the cell to receive grain Fill the hopper 1 2 inch above the separation line between the top of the hopper and the hopper compartment Heap the grain slightly Fill the grain cell by pulling out the Grain Loader Striker Figure 16 IMPORTANT The Loader Striker should be pulled to the right in a smooth and reasonably swi...

Page 17: ...isplayed on the screen Figure 18 Figure 18 Moisture Display Moisture Corn 13 0 Up and Down Arrow Buttons 55 3 lb Bu 75 8 F Dump When Ready Dump the sample by rotating the Cell Dump Lever to the bottom unload position Empty the Sample Drawer and the unit is ready to test the next sample If an error occurred during reading the moisture measurement is a predicted value Although it is not assured to m...

Page 18: ...OPERATOR S MANUAL 16 MEASURING MOISTURE GAC500XT 11001 1352 200510 ...

Page 19: ...tton The newly selected grain will be displayed at the top of the list and marked with an asterisk At the top right corner of the Select Grain screen a downward pointing arrow will appear This indicates that more grains are available for selection than can fit on the screen 16 grains total The additional grain selections may be accessed by using the Arrow buttons Once the end of the grain list is ...

Page 20: ...OPERATOR S MANUAL 18 GRAIN SELECTION GAC500XT 11001 1352 200510 ...

Page 21: ...e Enter button The specific grain information will be displayed Figure 21 Figure 21 Grain Information Screen Corn Change Label Test Weight Bias Issue 910830 K1 1391 K2 5112 At the top right corner of the Grain Information screen a downward pointing arrow will appear This indicates that more grains are available for selection than can fit on the screen 16 grains total The additional grain selection...

Page 22: ...ure 22 Use the Down Arrow button to move the cursor from the highlighted character to the character selection area Use the Arrow buttons to navigate to the appropriate character and press the Enter button to select it Repeat this process until all desired characters have been updated Press the Enter button once again to accept the changes and return to the previous screen Press the Escape ESC butt...

Page 23: ...ow buttons will navigate through the number Repeat this process until all desired characters have been updated Figure 23 Entering Access Code Enter button Up and Down Arrow Buttons Left and Right Arrow Buttons Co r n Test Weight B ias 0 0 Enter Access Co de 0000 ESC Escape button Once the ACCESS CODE has been entered press the Enter button again The Test Weight Bias screen will be displayed Figure...

Page 24: ...d Down Arrow Buttons Co r n Issue Left and Right Arrow Buttons 910830 ESC CALIBRATION VALUES K1 K9 Calibrations are published on the DICKEY john website located at www dickey john com on an annual basis To maintain current calibration values these K numbers must be periodically updated Select the appropriate K number to be updated on the Grain Information screen Press the Enter button The K inform...

Page 25: ...heck Display Test System Info CELL TEST The cell test provides several functions for test and troubleshooting cell measurements These functions include Null 5KHz 2MHz Self Check and Test Network Null 5KHz and 2MHz tests provide cell measurements of the primary grain measurement frequencies Self check provides SCD1 and SCD2 testing of cell capacitance and conductance measurements Test network provi...

Page 26: ...e 375 20 counts If these measurements are out of range clean the cell refer to CLEANING AND CARE and repeat testing once the cell is cleaned If measurements are out of range after cleaning contact your distributor or DICKEY john Service Department at 1 800 637 3302 Outside of the U S contact DICKEY john Europe at 00 33 0 1 41 19 21 80 Choose the SELF CHECK option from the Cell Test screen Press th...

Page 27: ...best results Choose the TEST NETWORK option from the Cell Test screen Press the Enter button The unit will prompt for the cell to be emptied and the Enter button pressed again Figure 31 ENTER Figure 31 Test Network Prompt Screen Enter button Test Network Make Sure Cell is Empty And Upright Then Press ENTER Press the Enter button to begin the test A status bar will be displayed Figure 32 followed b...

Page 28: ...re 34 Temperature Screen Right Arrow button ESC Escape button Temperature F 81 29 Temp Volts 1 20024 WEIGHT CHECK The weight check feature may be used to measure the weight of the empty cell or the grain currently held inside the cell An empty cell test should be conducted to verify the empty cell weighs 0 0 grams Once this has been completed grain should be loaded into the hopper then into the ce...

Page 29: ...rain may be loaded into the hopper then the cell and another measurement may be taken by pressing the Enter button again The process will be repeated and a new weight measurement will be displayed Figure 37 When all readings have been completed press the Home button to return to the Main menu or press the Escape ESC button twice to return to the Diagnostics screen Figure 37 ESC HOME Home button We...

Page 30: ... button are pressed ENTER Figure 38 Display Test Screen Enter button ESC Escape button SYSTEM INFORMATION The system information option provides the unit s serial number hardware revision and software version To access the System Information screen select the SYSTEM INFO option from the Diagnostics screen Press the Enter button The System Information screen will be displayed Figure 39 To exit the ...

Page 31: ...ocated on the right side of the unit The screws will not align with the test cell securing hardware unless the support cell is lifted to its upmost position by inverting the Sample Drawer 3 Once the screws are securely in place remove the Sample Drawer and reinsert it in the correct position IMPORTANT Shipping the unit with the sample drawer inverted will damage the test cell It is imperative that...

Page 32: ...ut of limits Corrective Action 1 Dump the cell and ensure it is empty ERROR 6 Probable Cause 1 The moisture reading exceeds the upper limit Corrective Action 1 Choose a product within the moisture range and try again ERROR 7 Probable Cause 1 The moisture reading exceeds the lower limit Corrective Action 1 Choose a product within the moisture range and try again ERROR 8 Probable Cause 1 The empty c...

Page 33: ...ts limits Corrective Action 1 Change the appropriate conditions and try again ERROR 20 Probable Cause 1 The unit has detected a software error Corrective Action 1 Contact DICKEY john Service Department ERROR 21 Probable Cause 1 The measurement cell exceeded low limit Corrective Action 1 Repeat test If error recurs contact DICKEY john Service Department GAC500XT 11001 1352 200510 TROUBLESHOOTING 31...

Page 34: ...l weight is too high Corrective Action 1 Repeat the test Be sure to follow display instructions ensuring that excess grain has been swept off the cell top ERROR 25 Probable Cause 1 Error was encountered measuring weight Corrective Action 1 Contact DICKEY john Service Department ERROR 26 Probable Cause 1 VF error is encountered Corrective Action 1 Contact DICKEY john Service Department ERROR 27 32 ...

Page 35: ...onstants ERROR 36 Probable Cause 1 Weight lower than average sample weight tolerance Corrective Action 1 Increase the sample size and repeat the test ERROR 37 Probable Cause 1 Weight higher than average sample weight tolerance Corrective Action 1 Repeat the test Be sure to follow display instructions ensuring that excess grain has been swept off cell top ERROR 39 Probable Cause 1 GAC500XT input vo...

Page 36: ...ay voltage is too high Corrective Action 1 Contact DICKEY john Service Department ERROR 43 Probable Cause 1 Positive cell voltage is too low Corrective Action 1 Contact DICKEY john Service Department ERROR 44 Probable Cause 1 Positive cell voltage is too high Corrective Action 1 Contact DICKEY john Service Department ERROR 45 Probable Cause 1 Negative cell voltage is too low Corrective Action 1 Co...

Page 37: ...obable Cause 1 Negative cell voltage is too high Corrective Action 1 Contact DICKEY john Service Department REPLACEMENT PARTS Mobile Power Adapter Wall Power Adapter 467950190 467950150 GAC500XT 11001 1352 200510 TROUBLESHOOTING 35 ...

Page 38: ...OPERATOR S MANUAL 36 TROUBLESHOOTING GAC500XT 11001 1352 200510 ...

Page 39: ...or repair said part This warranty does not apply to damage resulting from misuse neglect accident or improper installation or maintenance Said part will not be considered defective if it substantially fulfills the performance expectations THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES OF MERCHANTABILITY FITNESS FOR PURPOSE AND OF ANY OTHER TYPE WHETHER EXPRESS OR IMPLIED D...

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