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Federal Signal VALS Instrucciones De Instalación página 4

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B. Installation on Adapter Plate.
• Refer to "Warning Message to Installers" packed with this unit. Also, refer to Introduction and
Basic Installation instructions in this instruction sheet before installing device.
• Use only 14 to 18 AWG wire for power connection. Strip no more than 0.25-inch of wire insula-
tion from the ends of the power leads.
1. Insert bushing (supplied) into adapter plate. Route power leads through the slot in the BCL
or SFL Adaptor Plate, as shown in Figure 1. Snap the front cover of the light off. Route
power leads through board assembly as shown in Figure 2. Connect the power leads to the
terminals of the two position connector by inserting the stripped ends of the wire into the
connector as far as they can travel, polarity MUST be observed on DC units. Make sure
supply lead insulation is flush with connector. If stranded wire is used, be sure that there
are no loose strands outside the connector plug that could touch the adjacent lead and cause
a short circuit. Replace cover on light, lens should snap onto board assembly.
2. Attach the light to the adapter plate, using two of the 8-32 screws and nuts supplied.
3. Attach the adapter plate to the 4-inch electrical box with two 8-32 screws.
C. Installation on 4-Inch Horns.
• Refer to "Warning Message to Installers" packed with this unit. Also, refer to Introduction and
Basic Installation instructions in this instruction sheet before installing device.
• Use only 14 to 18 AWG wire for power connection. Strip no more than 0.25-inch of wire insula-
tion from the ends of the power leads.
1. Turn off power to the horn and detach the horn from its mounting location by removing the
slotted screws. Disconnect all electrical connections to the horn.
2. See Figure 3A. Using a small blunt tool, such as a pin punch, knock out the slot in the horn
housing from the rear. Figure 3A shows the mechanism removed from the horn, for clarity.
DO NOT remove the mechanism before knocking out the slot.
3. Insert the supplied nylon bushing into the slot from the front of the horn, as indicated in
Figure 3B.
In order to properly seat the bushing, excess burrs must be removed from the slot area.
4. Remove the two Phillips head screws from the corners of the horn. Retain the screws.
5. Route power leads through the horn and through the nylon bushing. Snap the front cover of
the light off. Route power leads through board assembly as shown in Figure 2. Connect the
power leads to the terminals of the two position connector by inserting the stripped ends
of the wire into the connector as far as they can travel, polarity MUST be observed on DC
units. Make sure supply lead insulation is flush with connector. If stranded wire is used, be
sure that there are no loose strands outside the connector plug that could touch the adjacent
lead and cause a short circuit. Replace cover on light, lens should snap onto board assem-
bly.
6. If the horn is to be flush mounted, attach the accessory plate at this time. Position the light
so that the wires are directly over the nylon bushing and the wires will not be visible after
the light is attached. Attach the light to the horn, using the two screws that were removed
in step 4.
7. Connect the light leads following the diagram in Figure 4. Insulate all splices.
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NOTE
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