Dickey-John GAC500XT User manual
GAC®500XT
11001-1435-200701
i
TABLE OF CONTENTS
Safety Notices...................................................................................................... 1
Introduction.......................................................................................................... 3
Testing Samples (Quick Start)........................................................................................... 3
Features............................................................................................................................. 3
Keypad Definitions............................................................................................................. 4
Power Key......................................................................................................................................... 4
Up and Down Arrow Keys................................................................................................................. 4
Enter Key .......................................................................................................................................... 4
Escape Key....................................................................................................................................... 4
Right and Left Arrow Keys ................................................................................................................ 4
Home Key ......................................................................................................................................... 4
Specifications..................................................................................................................... 5
Installation and Setup.......................................................................................... 7
Removing Shipping Screws............................................................................................... 7
Unit Positioning.................................................................................................................. 7
Power Connection ............................................................................................................. 8
Printing Capabilities........................................................................................................... 8
Startup .................................................................................................................. 9
Settings............................................................................................................... 11
Units................................................................................................................................. 12
Selecting a Language...................................................................................................... 12
LCD Contrast................................................................................................................... 13
TW Bias Access Code..................................................................................................... 14
Output Options................................................................................................................. 14
Selecting Grain................................................................................................... 17
Measuring Moisture........................................................................................... 19
Preparing To Measure Moisture ...................................................................................... 19
Loading the Hopper ......................................................................................................... 20
Grain Calibrations.............................................................................................. 23
Entering New Grain Calibrations ..................................................................................... 23
Modifying Grain Information............................................................................................. 24
Test Weight Bias.............................................................................................................. 24
Issue Number.................................................................................................................................. 25
Calibration Values (K1-K9).............................................................................................................. 26
GAC®500XT
11001-1435-200701
ii
TABLE OF CONTENTS
Diagnostics........................................................................................................ 27
Cell Test .......................................................................................................................... 27
Null Test, 5KHz, and 2MHz Tests ................................................................................................... 28
Self Check Test ............................................................................................................................... 28
Test Network ................................................................................................................................... 29
Temperature.................................................................................................................... 30
Weight ............................................................................................................................. 30
Weight Check.................................................................................................................................. 31
Weight Table ................................................................................................................................... 32
Display Test..................................................................................................................... 32
System Information.......................................................................................................... 33
System Voltages.............................................................................................................. 34
Troubleshooting................................................................................................ 35
Shipping and Transportation ........................................................................................... 35
Cleaning and Care........................................................................................................... 35
Error Codes..................................................................................................................... 36
Replacement Parts.......................................................................................................... 41
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
1
SAFETY NOTICES
Safety notices are one of the primary ways to call attention to potential
hazards.
This Safety Alert Symbol identifies important
safety messages in this manual. When you see
this symbol, carefully read the message that
follows. Be alert to the possibility of personal
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 situation which, if not avoided,
may result in equipment damage.
!
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
2 SAFETY NOTICES
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
INTRODUCTION 3
INTRODUCTION
The DICKEY-john Grain Analysis Computer GAC®500XT quickly tests grain
and automatically calculates moisture content, temperature, and
approximate test weight (density) of the sample. The unit measures empty
cell characteristics, prompts for sample loading, tests the sample, and
displays the results. The selected grain name is also displayed during the
measurement sequence.
TESTING SAMPLES (QUICK START)
Performing a grain sample analysis consists of six basic steps.
1. Press the MEASURE function using the Arrow keys.
2. Press the Enter key to initiate a measurement sequence.
3. Follow display instructions to empty the cell.
4. Press the Enter key 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 18), and press the Enter key 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 of the GAC500XT include:
• Memory for up to sixteen grain calibrations
• Keypad entry for updating grain calibration revisions
• Error messages display when moisture, temperature, or weight is out
of range
• Keypad entry for new or unique grain measurements
• 12 Vdc mobile adapter
• English/Metric units
• Multiple language groups/dependent upon region
• Audible alarm to signal key depression and measurement culmination
• Print capabilities
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
4 INTRODUCTION
Figure 1
GAC500XT Display And Keypad
KEYPAD DEFINITIONS
POWER KEY
Turns the unit ON and OFF.
UP AND DOWN ARROW KEYS
The Up and Down Arrow keys are used to select menu items, increment/
decrement digits, or select characters.
ENTER KEY
The Enter key is used to navigate into highlighted functions, initiate actions, or
accept data.
ESCAPE KEY
The Escape (ESC) key is used to navigate to the previous screen.
RIGHT AND LEFT ARROW KEYS
The Right and Left Arrow keys are used to select digits or characters.
HOME KEY
The Home key is used to return to the Main menu.
POWER ESC ENTER
HOME
POWER
ENTER
ESC
HOME
Power key
Up and Down Arrow keys
Enter key
Escape key
Left and Right Arrow keys
Home key
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
INTRODUCTION 5
SPECIFICATIONS
• Supply voltage and frequency
– wall mount adapter: 90VAC to 264 VAC, 47 to 63 Hz, 0.4A max
– 6-Volt vehicle adapter: 12-24VDC.
• Operating temperature range: 5°C to 45°C (41°F to 113°F). If the
temperature range is exceeded, the until will measure moisture and
display an error message warning the operator that the readings do not
necessarily meet unit specifications.
• Grain temperature range: 5°C to 45°C (41°F to 113°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 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 meet unit specifications.
• Classes/types of grain or seed: calibration bulletins may be obtained
through the DICKEY-john website (www.dickey-john.com) or by
requesting a calibration bulletin at:
DICKEY-john Corporation
5200 DICKEY-john Road
Auburn, Illinois 62615
(800) 637-3302
• Weight: 5.78 kg (13 lbs)
• Shipping weight: 6.35 kg (14 lbs)
NOTE: Before relocating or
shipping the GAC500XT,
the shipping screws must
be replaced.
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
6 INTRODUCTION
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
INSTALLATION AND SETUP 7
INSTALLATION AND SETUP
Before shipping, the GAC500XT is tested and inspected to ensure the unit
is fully operational and meets all measurement specifications. After
unpacking, inspect for damage that might have occurred during transit.
Save all packing material until inspection is complete. If damage is found,
immediately file a claim with the carrier. Also notify your DICKEY-john Sales
Representative.
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
UNIT POSITIONING
To achieve the most precise measurements, select a location that is clean,
level, and protected from rapid changes in temperature.
GAC500XT
TM
Shipping
Screws
OPERATOR’S MANUAL
GAC®500XT
11001-1435-200701
8 INSTALLATION AND SETUP
POWER CONNECTION
Using either the AC power adapter or the mobile power adapter, connect the
unit on the right rear to the wall outlet or mobile plug, respectively.
Figure 3
Power Connection
PRINTING 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 or any serial printer.
For additional printer output information, refer to the SETTINGS section.
Figure 4
Example of GAC500XT Printout
Serial Port
(Printer
connection)
Power Plug
(rear of GAC500XT)
DICKEY-JOHN CORP.
GAC500XT
S/N: 000003
LINE WHEAT
910828
MOIST.:
12.5%
TW:
61.5 LB/BU
TEMP.:
68.3 F
===================
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