Daktronics GPR-12EV-RGB - Manual (Page 25)

Maintenance 19
Make sure the intake vents on the bottom front and the
exhaust vents on the top front of the display are not
blocked and are free of dust or other debris. Hold a
piece of lightweight paper in front of the top edge of the
display to detect air movement through the vents.
When mounting the display, the entire front of the
display must be exposed to allow for proper
ventilation. Aesthetic shrouding (common in
monument installations) is not advised. Refer to Figure
20 and Figure 21 for examples.
6.4 Display Face Cleaning
Wet Cleaning Process
1. Turn off the power to the display.
2. Mix a mild, non-abrasive, non-petroleum-
based detergent and cold water, one ounce of
detergent to one gallon of cold water.
3. Saturate a light/medium duty cleaning brush
with the soapy water.
4. Use horizontal brush strokes to loosen and
remove dirt and grime, washing the display
from top to bottom.
Use light pressure so as not to damage the
LEDs. Clean only an area that is safely within
reach from a lift or stage, and then move on
to the next section of modules.
5. Rinse the display face with generous amounts
of cold water under low pressure.
A spot-free rinse agent can be used to reduce
water spots.
6. Use soft, dry terrycloth to dry and remove any excess water. Take care not to damage
LEDs by catching the cloth on them.
7. Allow the display to completely air-dry for 12 hours before applying power to the
display.
Dry Cleaning Process
1. Turn off power to the display.
2. Rub a dry, soft terrycloth towel horizontally across each row of LEDs. Make four
passes per row of LEDs before moving to the next row of LEDs.
Figure 20: Restricted Airflow
Figure 21: Unrestricted Airflow