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ADDENDUM (GAC® 2500 UGMA/INTL)
NOTE: For customers that require a
more extensive cleaning
procedure with debris buildup in
the cell, contact and schedule
your instrument for cleaning
with your dealer or authorized
service center.
GAC® 2500 Models (UGMA & INTL)
11001-1646A-201409
MAINTENANCE
This Addendum updates the Maintenance section of the GAC
(UGMA & INTL) operator's manual (11001-1505F and all other preceding
manuals).
IMPORTANT: It is highly recommended the unit be regularly inspected
and cleaned to ensure continued and consistent results.
For optimum performance, extensive cleaning should be performed
weekly or more often based on surrounding environment conditions.
Factors such as dust, temperature extremes, grain dust, and external
humidity vary from location to location. If there are any questions
about the cleanliness or instrument performance, contact your local
authorized service center.
Note: The following recommendations are provided as a guideline to
maintain a robust and quality operating instrument. It should not be
interpreted as an exhaustive maintenance program. Dust and debris may
periodically accumulate in areas not specified in this manual. The owner is
responsible for ensuring overall equipment cleanliness. If any questions
arise regarding the maintenance or performance of the instrument, contact
your dealer or local authorized service center.
EXTERNAL CLEANING
The LCD display may require periodic cleaning. Use a commercial cleaner
for glass lenses to remove dust.
Do not apply water, organic solvent or chemicals, such as acid
and alkali to the LCD display.
®
The GAC
2500 surface can be cleaned with any cleaner designed for
plastic and stainless steel surfaces.
Periodically use a rag to wipe the grain hopper and the (2) upper grain
hopper sensors.
Figure 1
Grain Hopper Sensors
Upper grain
hopper sensors
MAINTENANCE / 1
®
2500
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Summary of Contents for Dickey-John GAC 2500 UGMA
- Page 1 ADDENDUM (GAC® 2500 UGMA/INTL) MAINTENANCE ® This Addendum updates the Maintenance section of the GAC 2500 (UGMA & INTL) operator’s manual (11001-1505F and all other preceding manuals). IMPORTANT: It is highly recommended the unit be regularly inspected NOTE: For customers that require a more extensive cleaning and cleaned to ensure continued and consistent results.
-
Page 2: Internal Cleaning
– Pressing the Clean button automatically begins the cleaning sequence and opens the hopper door and the trap door (version 2.4 grain handler firmware). Figure 2 Daily Clean Method GAC2500-UGMA DICKEY-john Corporation Current User: Guest Analyze Results Setup Instrument Information... - Page 3 ADDENDUM (GAC® 2500 UGMA/INTL) 3. Remove the grain drawer. Figure 3 Remove Grain Drawer 4. Using the supplied brush, manually remove any loose or stuck grain or dust from the measuring cell. 5. Press the OK button to return instrument to normal operation. Hands should be clear from inside the instrument before pressing the OK button.
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Page 4: Extensive Cleaning Method
ADDENDUM (GAC® 2500 UGMA/INTL) EXTENSIVE CLEANING METHOD The daily cleaning method should be performed first before proceeding to NOTE: For customers that require a more extensive cleaning the extensive cleaning method. procedure with buildup in the IMPORTANT: cell, contact and schedule your instrument for cleaning with Extensive cleaning should be performed weekly or more often based your dealer or authorized... - Page 5 ADDENDUM (GAC® 2500 UGMA/INTL) 3. Remove other accessory cords (USB and printer). Figure 7 Remove Accessory Cords 4. Remove grain drawer. Figure 8 Remove Grain Drawer 5. Place the unit on its back side. Figure 9 Place Unit on Back Side MAINTENANCE / 5 GAC®...
- Page 6 ADDENDUM (GAC® 2500 UGMA/INTL) 6. Manually pull down on trap door. Figure 10 Pull Down on Trap Door 7. Clean surfaces around measurement cell including hinge, trap door, and edge of cell with the supplied brush. Figure 11 Clean Surface Area Around Cell, Hinge, Trap Door, Edge of Cell 8.
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Page 7: Cleaning The Temperature Sensor Probe
DICKEY-john Service or authorized service center. The temperature sensor may require cleaning due to dust buildup and/or foreign material that has collected around the sensor that could potentially cause temperature error readings during analysis. -
Page 8: Temperature Sensor Type
ADDENDUM (GAC® 2500 UGMA/INTL) TEMPERATURE SENSOR TYPE The GAC 2500 is equipped with one of two different sensor types. The cleaning method is similar for both types however the cotton swab for cleaning varies based on the sensor type. • older instruments may include an embedded sensor on the circuit board (recommended cotton swab McMaster-Carr p/n 71035T54) •... - Page 9 ADDENDUM (GAC® 2500 UGMA/INTL) To Clean the IR Temperature Sensor: 1. Gently place instrument upside down. Figure 18 Place Instrument Upside Down 2. Visually inspect the IR temperature sensor to determine the type of sensor installed. 3. For instruments with the flush sensor and brush bracket, the following procedure can be utilized to remove particles from the brush.
- Page 10 ADDENDUM (GAC® 2500 UGMA/INTL) Figure 20 Wet Swab with Alcohol 5. Swab method for cleaning sensor: – For embedded sensors, the sensor is located inside the black tube. Insert the swab inside the black tube and gently clean the IR temperature sensor with the wet end of the cotton swab as depicted (Figure 21).
- Page 11 ADDENDUM (GAC® 2500 UGMA/INTL) The IR temperature sensor can be cleaned with the Q-tip by placing the Q-tip through the funnel or on the outside of the funnel as depicted in (Figure 22). Figure 22 Cleaning the Sensor with Cotton Swab Place Q-tip on either side of funnel...
- Page 12 ADDENDUM (GAC® 2500 UGMA/INTL) MAINTENANCE GAC® 2500 Models (UGMA & INTL) 11001-1646A-201409...
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