Daktronics Galaxy AF-3500 Series Double Face - Manual (Page 20)

16 Maintenance
6.4 Display Face Cleaning
Wet Cleaning Process
1. Turn off 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 several passes per row of
LEDs before moving to the next row of LEDs. Work from top to bottom safely within reach from a lift or a
stage. Take care not to damage LEDs or the plastic louvers by catching the cloth on them.
6.5 Annual Inspection
Complete a yearly display inspection to maintain safe and dependable operation. Open the display to visually
inspect the cabinet interior and the components. Refer to
Section 6.2 for directions to access the interior.
• Tighten and replace any loose fasteners.
• Vacuum or carefully wipe away dust and debris around the fans and inside the cabinet.
• Check for water intrusion or stains and replace weather stripping, tighten module latches, place
silicone sealant around areas where water might enter, and replace damaged electronic components
as necessary.
• Also, check the paint for cracking and peeling and touch up with rust-resistant enamel as necessary.
• Inspect the footings, tie points, and ground rods for corrosion and make sure the structural integrity
and grounding connections are intact.
A log is provided in Appendix D to track maintenance and help determine a maintenance schedule specific
to the individual display.