Federal Signal 191XL Serie Manual De Instalación Y Mantenimiento página 15

To change from the default Steady Mode to Flashing Mode.
1. Disconnect power to the beacon.
2.
See Figure 3 on page 16. Remove the threaded dome assembly
by twisting it counterclockwise.
3. Using a No. 2 Phillips screwdriver, remove two #8-32 pan-
head screws holding the printed circuit board assembly to
the die-cast housing. Be sure to retain the two nylon screw
bushings isolating the bracket from the screws.
4. Gently lift the printed circuit board (PCB) assembly from the
housing and turn the assembly over to access the component
side of the printed circuit board.
5.
See Figure 4 on page 17. Locate jumper J3 and lift the jumper
to remove it from "Flash" setting. Re-seat the jumper over the
pins labeled "Steady."
6. Place the printed circuit board assembly back into housing,
making sure that four insulating pads are seated between
the metal bracket and die-cast housing. The bracket must
be oriented so that the notch in the bracket is aligned with
the ground screw in the die-cast housing. This step must be
carefully followed to prevent arcing and dielectric failure.
7. Slide two #8-32 pan-head screws into the screw bushings and
tighten screws to secure the printed circuit board assembly to
the die-cast housing.
8.
Thread the dome assembly back onto the housing by turning it
clockwise to tighten.
SHOCK HAZARD: To avoid electrical shock hazards, do not
connect wires while power is applied.
9.
Reconnect the beacon to power.
Installation and Service Instructions
Model 191XL Series LED Beacon
15