Daktronics AB-1600-1.5,2.5 User Manual
Page 51
Maintenance & Troubleshooting
4-15
Filter Removal (Rear Access)
Filters are easy to remove if your
display provides rear access.
Using the tab on the lower edge of the
filter frame, lift the bottom edge of the
filter up about an inch and out until it is
free from the filter holder and remove.
4.11 Fans
Fans control the heat buildup generated by the electronic components. One cooling fan will provide
ventilation for eight to twelve 8x16 display modules (depending on display configuration).
Check fans after the display has been in operation for 1,500 hours and every 1,500 hours after that to
ensure that the display cools properly. Check fans more often if the display is located in a dusty or
harsh weather environment (i.e. along a gravel road with dust laden air).
1500 hours is equivalent to 83 days if the display is operated for 18 hours a day and the power to the
display is turned off when not in use to ensure that the fans are not operating when the display is not
running. 1500 hours is equivalent to 62 days if the display is on running non-stop, 24 hours a day.
Rear access displays allow for easy checking of the fans.
•
= After removing the filters (refer to Section 4.10), turn the power back on.
•
= Look up inside the rain shield and note if the fans are turning properly.
CAUTION: The fan blades are exposed during this step. Turn the power off when finished
checking the fans.
After removing a module, take a minute to inspect the fans.
•
= Check the fan blades for dirt and debris. If the fan blades have a large accumulation of dirt and
debris, this indicates that the filters require more frequent changing. Keep fan blades clean to
maintain fan efficiency and ensure proper cooling.
•
= Spin the fan blades with a pen or pencil to ensure that the bearings are free and the fan is still in
balance.
After replacing 10% of the fans, Daktronics recommends replacing all cooling fans to reduce
associated maintenance costs that may incur with increased heat buildup from fan failure.
Figure 52: Filter Removal - Rear Access