Maintaining and Servicing the Integrity
37
Installation, Maintenance, and Service Manual
Federal Signal
www.fedsig.com
4.
Inspect the O-rings and the lip seal for deformation, brittleness, cuts, or tears. To
maintain watertightness, replace a questionable O-ring or seal.
5.
Inspect the lens for cracks, crazing (hairline cracks), and other defects.
Figure 15 Locations of the barrel nuts in lens (numbers indicate tightening sequence)
FSC-67
FSC-66
290A7480
9
13
11
7
3
2
6
10
9
5
1
4
8
12
7
3
2
6
5
1
4
8
Reinstalling the Lens
To reinstall the lens:
1.
Reinstall the cover and lens. To prevent cross-threading the barrel nuts, back them
counterclockwise until you hear the click of the threads engaging.
2.
Tighten the barrel nuts to 16-24 in-lb in the sequence shown in Figure 14 on
page 35.
Replacing a PCB
The Integrity light bar has two end and two intermediate ROC PCBs as well as a controller
PCB. See Figure 16 on page 38. They are configured at the factory per the customer
order.
STATIC SENSITIVE DEVICE: This light bar circuitry can be damaged by
electrostatic discharge (ESD). Follow anti-static procedures when servicing this
light bar.
