Daktronics Galaxy AF-3190 Series, Руководство пользователя, Страница: 59 / 97

Maintenance and Troubleshooting
4-15
4.8 Thermostats
Reference Drawings:
Component Layout, AF-3190-**X***-89mm................. Drawing B-181666
A thermostat is used when the ventilation fans operate in the display. Refer to the
Drawing 181666 for the location of the thermostat. The ventilation fans turn on
when the inside of the display reaches 85
°
F (29 C), and turn off at 70
°
F (21 C).
4.9 Sign Maintenance
Perform a yearly inspection to maintain safe and dependable display operation. This
inspection should address the following issues:
•
Loose Hardware
Verify fasteners, such as bolts and rivets, have not come loose. Check,
tighten, and replace fasteners as required.
•
Excessive Dust Buildup
Occasionally it may be necessary to vacuum the inside of the display
cabinet to remove dust/dirt buildup that may interfere with airflow.
•
Water Intrusion – Water Stain Marks
Water can enter the sign where weather stripping has come loose or
deteriorated, where fasteners have come loose allowing gaps in the panels,
or where moisture may be entering around hardware. Check electronic
components for signs of corrosion.
•
Corrosion
Check the paint; look for possible corrosion, especially at footings,
structural tie points, and ground rods.
If you notice any of the above conditions, take action to correct the situation .
4.10 Weather Stripping
To ensure the display is weather resistant, Daktronics provides weather stripping
around the entire display and around each module. The weather stripping must be
properly installed at all times or water may leak into the display, damaging the
components.