Maintenance and Troubleshooting
14
•
Check the filters every year. Clean the filters with water and a mild detergent, such as
dish soap.
•
Compressed air can be used to clean the filter provided the nozzle is held at least
6" away from the filter, the pressure is no greater than 60 psi, and the air is blown
through the filter opposite the air flow direction as indicated by the arrow stamped
on the filter frame. Do not use compressed air inside the sign to avoid additional
debris in the display cabinet.
Filter Replacement
1.
Turn off the intake fan breaker.
2.
Loosen the
1
/
4
-turn fasteners in the upper corners of the intake fan assembly panel.
3.
Rotate the intake assembly forward and slide the filter out.
4.
Slide a new filter into the panel.
5.
Rotate the fan assembly back into its original position and tighten the
1
/
4
-turn
fasteners.
Fan Replacement
1.
Unplug the fan cord and cut the cable ties.
2.
Remove the hardware holding the fan and finger guard in place.
3.
Remove the failed ventilation fan.
4.
To replace the ventilation intake fan, follow the previous steps in reverse order. Ensure
the fan is properly oriented. Verify air flow direction.
Traffic Cabinet Maintenance
Power Supply Assembly Replacement
Power supply assemblies are mounted in the traffic cabinet.
1.
Turn off power to the power supplies by turning off the breaker in the distribution
panel.
2.
Locate the failed power supply reported by the Vanguard
®
Field Controller.
3.
Note the location and orientation of the plugs connected to the isolation board on
the failed power supply. Disconnect the plugs going into the isolation board.
4.
Verify the address on the new isolation board matches the address on the existing
isolation board.
5.
Loosen the screws securing the power supply, and gently lift the power supply and
mounting plate out of the traffic cabinet.
6.
Loosen the screws securing the power supply to the plate, and gently lift the faulty
power supply off the plate.
To replace the new power supply, repeat the above steps in reverse order.
Note:
Filters are directional. The replacement filter must be aligned in the same
direction as the existing one.
