Daktronics AB-1500-1.5,2.5 - Manual (Page 72)

Maintenance Checklist
1½ Inch and 2½ Inch Displays
This form can be used as both as a maintenance guide and a record of maintenance performed. Store these forms in
maintenance file as they are completed. Each form is designed to cover one year of maintenance.
Circle the operational year to which this form applies 1 2 3 4 5 6 7 8 9 10
Maintenance Procedures
1. Check fans at 1,500 hour intervals to ensure proper operation. With display power off, clean dust from blades and
spin the blades with a pen or pencil to make sure the bearings are free and the fan is still 'in balance.
2. Check the filters at 1,500 hour intervals. Check the filter for excessive dust/dirt buildup and for damage, such as
holes, which may allow unfiltered air into the display.
3. Check line and lamp voltage every 4,500 hours or whenever a significant change occurs in the area that could
affect line voltage. Refer to the Electrical Installation section of the Installation and Maintenance Manual for more
information.
4. At least once each 9,000 operational hours check the inside of the display, including the circuit boards, for signs of
water intrusion such as water stains. Water may enter the display due to any of the following:
• Loose or deteriorating weather stripping.
• Loosened fasteners which allow gaps to open between panels.
• Weak seals around hardware, such as eye bolts, on the top of the display.
5. At least once each 9,00 operational hours inspect the paint and check for signs of corrosion on the structure. Pay
special attention to footings, structural tie points and ground rods. Fasteners should be tightened or replaced as
required.
Operation Hours Perform Above
Steps Numbered
Date Performed Checked By
1,500 Hrs * Day 83
* Day 62 1,2
3,000 Hrs * Day 166
** Day 125 1,2
4,500 Hrs * Day 249
** Day 187 1,2,3
6,000 Hrs * Day 332
** Day 250 1,2
7,500 Hrs * Day 415
** Day 312 1,2
9,500 Hrs * Day 498
** Day 365 1,2,3,4,5
* Assuming the display is operated 18 hours per day
and is turned off when not in use.
** Assuming the display is operated 24 hours per day.
Consult the Installation and Maintenance Manual for additional
Maintenance Details.
DAKTRONICS, INC.
P.O. Box 5128 331 32 nd Ave. Brookings, SD 57006
Phone (605) 697-4035 or (877) 605-1114 Fax (605) 697-4444
www.daktronics.com e-mail [email protected]
DF-1866
Rev. 3 – 24 October 2001