Daktronics Galaxy AF-3220 - Manual (Page 18)

14 Maintenance
Filters
Filters, shown in Figure 10, were added to AF-3220 displays in June
2012.
Filters prevent dirt and debris from entering the display cabinet.
Check and replace filters every six months, but more frequent
inspection may be required depending on conditions around the
display, to ensure adequate air flow in the display.
Remove the filter assembly from the display by pushing one of the
filter bracket tabs outward and lifting the filter assembly up and
out, as shown in
Figure 11. Remove the filter from the filter
assembly and clean with water or compressed air (no greater than
60psi and at least 6" away) blown through the filter in the opposite
direction from which air normally flows. Allow filters to dry before
placing them back into filter assemblies and inserting them back
into their locations.
Daktronics encourages users and service technicians to use their
own discretion when deciding whether to clean or replace the
filters.
6.3 Annual Inspection
Complete a yearly inspection to maintain safe and dependable
display operation. Open the display to visually inspect the
cabinet interior and the components. Refer to Section 6.1 for these
directions. The inspection should address the following issues:
Filter
Bracket
Tab
Filter
Bracket
Tab
Filter
Assembly
Filter
Figure 10: Filter Installed in Display Cabinet
D I
S P
L A
Y
F A
C E
Figure 11: Removing Filter
Inspection item Possible corrective measures
Loose bolts, screws, rivets • Tighten or replace, as required
Fans and Filters
• Refer to Section 6.2. Clean or
replace as necessary
Dust around fans, on
cabinet bottom
• Vacuum or carefully wipe away
Water intrusion or stains
• Replace weather stripping.
• Tighten door latches.
• Place silicone sealant around all
locations where water might enter.
• Replace damaged electronic
components
Paint corrosion by footings,
tie points, ground rods
• Check the metal for structural
integrity.
• Replace and/or repaint as necessary