Federal Signal Corporation SIGNALMASTER SM518A-24, Instruction Sheet

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A. On/Off Switch.
1. OFF Position.
The SignalMaster is not powered and the turn
signal/brake feature (if installed) is functional.
2. ON Position.
a. The switch will illuminate. If the switch does
not illuminate, check the switch bracket ground lead for proper
chassis ground connection.
b. The directional/hazard patterns will operate as
selected by the Hazard Rocker Switch.
B. Hazard Rocker Switch.
NOTE
These patterns will override the turn signal/brake
feature (if installed).
1. LEFT Position.
In this position, the light produces a left arrow
flashing pattern, instructing traffic to move left.
2. CENTER Position.
In this position, an alternating pattern is produced.
The four middle lights activate alternately with the two outside
lights on each side.
3. RIGHT Position.
In this position, the light produces a right arrow
flashing pattern, instructing traffic to move right.
C. Turn Signal/Brake Option.
1. Turn Signal.
If installed, a single end lamp flashes in sync with
the vehicle turn signal.
2. Brake.
If installed and the vehicle uses a common brake/
turn wire, both end lamps illuminate with the vehicle brake lights.
CAUTION
Damage to the directional light assembly will occur if this
vehicle is jump-started when the light is “on”. Ensure
that the light is switched “off” before jump-starting this
vehicle.
V. MAINTENANCE.
A. General.
WARNING
Crazing (cracking) of lenses will cause reduced effective-
ness of the light. Do not use cleaning agents (which will
cause crazing) such as strong detergents, solvents, or
petroleum products. If crazing of lenses does occur,
reliability of light for emergency signalling purposes may
be reduced until lenses are replaced.
Ordinary cleaning of the plastic lenses can be accom-
plished by using mild soap and a soft rag. Should fine scratches or
a haze appear on a lens, they can ordinarily be removed with a
non-abrasive, high quality, one-step, automotive paste cleaner/wax
and a soft cloth.
-4-
B. Lamp Replacement.
CAUTION
Use of higher wattage lamps can result in damage to the
colored lenses.
1. See figure 4. Remove and retain the two screws
which secure the lens. Carefully pull the lens straight away from
the light assembly.
CAUTION
Service life of lamp will be shortened if glass is touched.
If glass has been handled, clean with a grease solvent.
2. Remove the defective lamp by carefully pulling it
out of the socket. Install a new lamp by aligning the pins on the
lamp base with the holes in the socket, and carefully pushing the
lamp into the socket.
CAUTION
Use of longer screws may damage the circuit board
assembly. Use the previously removed screws when
replacing the lens.
3. Replace the lens using the previously removed
screws.
VI. REPLACEMENT PARTS.
Description Part No.
Lens, Clear 8573001
Lens, Red 8573001-01
Lens, Amber 8573001-02
Lens, Blue 8573001-03
Lens, Green 8573001-04
Lamp, 20-watt halogen, 8573085
24-volt, G-4
Cable Assembly, 15-ft.
175846
Cable Assembly, 35-ft. 175846-01
Reflector and Terminal Assy. 8573180-01
Screw, Torx, #10-32 7011163-04
PCB Assembly 2001228
Switch Kit Assembly 8573157
VII. SERVICE.
Communication and shipments should be addressed to:
Federal Signal Europe/VAMA S.A.
Doctor Farran, 7
08339 Vilassar De Delt
Barcelona, Spain
Phone 93-750-84-12/-89-12
FAX 93-753-78-23
Figure 4.
290A3043
LENS
LIGHT
ASSEMBLY
REMOVE 2
TORX SCREWS
PULL LENS STRAIGHT AWAY
FROM LIGHT ASSEMBLY
CAUTION
THE USE OF LONGER SCREWS MAY DAMAGE
THE CIRCUIT BOARD ASSEMBLY. USE THE
PREVIOUSLY REMOVED SCREWS WHEN
REPLACING THE LENS.