Federal Signal Corporation SENTRY User manual

2561079C
REV. C 805
Printed in U.S.A.
INSTALLATION AND MAINTENANCE INSTRUCTIONS
FOR
SENTRY™ WARNING LIGHTS
SAFETY MESSAGE TO INSTALLERS AND USERS
People’s lives depend on your safe installation of our
products. It is important to read, understand and follow
all instructions shipped with the products. In addition,
listed below are some other important safety instruc-
tions and precautions you should follow:
• To properly install this kit: you must have a
ood understandin of automotive electrical
procedures and systems, alon with profi-
ciency in the installation and use of safety
warnin equipment.
• DO NOT install equipment or route wirin
in the deployment path of an air ba .
• When drillin into a vehicle structure, be
sure that both sides of the surface are clear
of anythin that could be dama ed.
• In order for the li ht to function properly, a
separate round connection must be made.
If practical, it should be connected to the
ne ative battery terminal. At a minimum, it
may be attached to a solid metal body or
chassis part that will provide an effective
round path as lon as the li ht system is to
be used.
• Locate li ht control so the VEHICLE and
CONTROL can be operated safely under all
drivin conditions.
• Do not attempt to activate or deactivate
li ht control while drivin in a hazardous
situation.
• You should frequently inspect the li ht to
ensure that it is operatin properly and that
it is securely attached to the vehicle.
• File these instructions in a safe place and
refer to them when maintainin and/or
reinstallin the product.
Failure to follow all safety precautions and instruc-
tions may result in property dama e, serious injury, or
death to you or others.
I. UNPACKING.
After unpackin the unit, inspect it for dama e that
may have occurred in transit. If the unit has been
dama ed, file a claim immediately with the carrier,
statin the extent of dama e. Carefully check all
envelopes, shippin labels, and ta s before removin or
destroyin them. Ensure that the parts listed in the
appropriate KIT CONTENTS LIST are contained in the
packa e.
II. KIT CONTENTS LIST.
SURFACE MOUNT MODELS
Qty. Description Part Number
1 Cable Tie 150A109
1 Terminal, Female 224A216-04L
1 Terminal, Male 224A217-02L
3 Screw, #10 Thd. Frm. 7011A122-12
3 Flat Washer, #10 7072A119
1 Gasket, Mountin 8433011
1 Grommet 8108A002
PIPE MOUNT MODELS
Qty. Description Part Number
1 Cable Tie 150A109
1 Terminal, Female 224A216-04L
1 Terminal, Male 224A217-02L
MAGNETIC MOUNT MODELS
Qty. Description Part Number
1 Cover, Ma net, Mylar 16111464-01
1 Label, Caution, Ma netic Mnt. 200389
III. INSTALLATION.
A. Surface Mount Models.
To install the li ht, proceed as follows:
1. Push and hold the dome release button
(located in the plastic base). Turn the dome counter-
clockwise and lift the dome off the base (see fi ure 1).
2. Position the vehicle on a level surface.
Select a relatively flat mountin position which provides
sufficient ri idity to support the li ht and prevent
vibrations caused by the li ht when the vehicle is in
motion.
CAUTION
Turnin reflector by hand may dama e motor or
worm ear. To rotate the reflector, connect to an
appropriate power source.
3. Position the li ht with the dome release
button toward the rear at the selected mountin loca-
tion.

-2-
mountin surface and leave about 6" of excess wire
above the mountin surface. Also, route a user-supplied
16AWG black wire from a known ood vehicle round
throu h the rommet in the mountin surface and leave
about 6" of excess wire above the mountin surface.
9. Apply a silicone sealin compound around
the wires and rommet where they pass throu h the
mountin surface to prevent leaka e.
10. Ali n the holes in the mountin asket with
the appropriate holes in the base and apply the mount-
in asket to the base of the li ht . Route the wires
throu h the asket’s wire routin hole and into the base
of the li ht.
11. See fi ure 2. Secure the base to the mount-
in surface with the three thread-formin screws and
flat washers.
12. Strip approximately 1/4" of insulation from
the end of the red and black wires previously routed into
the base of the li ht.
13. Crimp the female terminal on the black
wire and attach it to the short black wire with the male
terminal.
14. Crimp the male terminal on the red wire
and attach it to the short red wire with the female
terminal in the li ht.
CAUTION
Interference with a rotatin reflector can
dama e the reflector or wires. Ensure that wires
are dressed to prevent any interference.
15. Use the cable tie to dress the wires.
16. Connect the unused terminal of the previ-
ously installed switch to one side of a user-supplied
fuseholder. Connect the other side of the fuseholder to
the positive (+) terminal of the vehicle’s battery. Install
an ei ht (8) ampere fuse in the fuseholder.
17. Replace the dome.
B. Pipe Mount Models.
1. Push and hold the dome release button
(located in the plastic base). Turn the dome counter-
clockwise and lift the dome off the base (see fi ure 1).
Figure 1.
MOUN ING HOLE
MOUN ING
HOLE MOUN ING HOLE
SLIDE O
REMOVE
MECHANISM RELEASE ABS
(PUSH DOWN HERE)
INS ALL REMOVE
290A2669-01
WIS DOME
WIRING HOLE
PUSH
O
RELEASE
DOME
FRONT
4. Use the base of the li ht as a template and
scribe three mountin hole drill position marks on the
mountin surface. Also, srcibe one wire routin hole
drill position mark at the center.
CAUTION
To avoid dama e when drillin , ensure that
both sides of mountin surface are clear of any
parts or wires.
Also, when drillin any holes, ensure that holes
are drilled only throu h sheet metal and not
throu h upholstery.
5. Drill one 1/2" (0.50) hole (wire routin hole)
at the previously scribed center drill position mark.
Drill three 9/64" (0.140) holes (mountin holes) at the
previously scribed outer drill position marks.
6. Install the rommet in the 1/2" wire routin
hole.
WARNING
When installin equipment inside air ba
equipped vehicles, the installer MUST ensure
that the equipment is installed ONLY in areas
recommended by the vehicle manufacturer.
Failure to observe this warnin will reduce the
effectiveness of the air ba , dama e the air ba ,
or potentially dama e or dislod e the equip-
ment, causin serious injury or death to you or
others.
7. Install a user-supplied switch (current
capacity of at least 8-amperes) at a location which
allows the vehicle and all controls to be operated safely
under all drivin conditions.
8. Route a user-supplied 16AWG red wire
from one side of the switch throu h the rommet in the
Figure 2.
DOME
BASE MOUN ING
SURFACE
MOUN ING
GASKE
#10 FLA WASHERS (3) #10-32 x 3/4" SCREWS (3)
290A2669-02B
WIRE LEADS
GROMME

-3-
WARNING
When installin equipment inside air ba
equipped vehicles, the installer MUST ensure
that the equipment is installed ONLY in areas
recommended by the vehicle manufacturer.
Failure to observe this warnin will reduce the
effectiveness of the air ba , dama e the air ba ,
or potentially dama e or dislod e the equip-
ment, causin serious injury or death to you or
others.
2. Install a user-supplied switch (current
capacity of at least 8-amperes) at a location which
allows the vehicle and all controls to be operated safely
under all drivin conditions.
3. Route a user-supplied 16AWG red wire
from one side of the switch throu h the pipe flan e and
into the li ht. Leave about 6" of excess wire above the
pipe flan e. Also, route a user-supplied 16AWG black
wire from a known ood vehicle round throu h the pipe
flan e and into the li ht. Leave about 6" of excess wire
above the pipe flan e.
4. Screw the flan e mount li ht onto the pipe.
Position the li ht with the dome release button toward
the rear.
5. Strip approximately 1/4" of insulation from
the end of the red and black wires previously routed into
the base of the li ht.
6. Crimp the female terminal on the black
wire and attach it to the short black wire with the male
terminal.
7. Crimp the male terminal on the red wire
and attach it to the short red wire with the female
terminal in the li ht.
CAUTION
Interference with a rotatin reflector can
dama e the reflector or wires. Ensure that wires
are dressed to prevent any interference.
8. Use the cable tie to dress the wires.
9. Connect the unused terminal of the previ-
ously installed switch to one side of a user-supplied
fuseholder. Connect the other side of the fuseholder to
the positive (+) terminal of the vehicle’s battery. Install
an ei ht (8) ampere fuse in the fuseholder.
10. Replace the dome.
C. Magnetic Mount Models.
Ma netic mountin provides a secure, tempo-
rary mountin method for most installations. However,
it is not intended for use on the exterior of a movin
vehicle.
WARNING
Because vehicle roof construction and drivin
conditions vary, Federal does not recommend
drivin a vehicle with a ma netically mounted
warnin li ht installed. The li ht could fly off
the vehicle causin injury or dama e. Repair of
dama e incurred because of i norin this
warnin shall be the sole responsibility of the
user.
Holdin power of ma netic mountin systems is
dependent upon surface finish, surface flatness,
and thickness of the steel mountin surface.
Therefore, to promote proper ma netic mount-
in :
• Mountin surface and ma nets must be
kept clean, dry, and free of forei n particles
that prevent ood surface contact.
• Ensure that mountin surface is flat.
• Ma net mountin system should not be
used on vehicles with vinyl tops.
• To prevent slidin of li ht assembly on
mountin surface, quick acceleration and
hard stops should be avoided.
• If the li ht is to be held directly to the roof
by the ma net, ensure that the power cable
is not under the ma net.
1. Place the li ht assembly on a level steel
surface. Ensure that the li ht is placed to promote
maximum covera e and ran e of the li ht’s warnin
si nal.
2. Insert the plu on the end of the power cord
into the ci ar li hter socket.
NOTE
When usin the vehicle’s ci ar li hter socket as
the li ht’s power source, Federal recommends
replacin the ori inal li hter circuit fuse with
an ei ht-ampere fuse. After the ori inal fuse has
been replaced, devices requirin more than
ei ht amperes will cause failure of the li hter
circuit fuse and therefore should not be plu ed
into the ci ar li hter socket.
If direct connection to the power source (not
utilizin the ci ar li hter plu ) is desired, a
user-supplied in-line fuseholder and ei ht-
ampere fuse must be installed in the power
cord’s ribbed (positive) lead.

-4-
D. DIN Mount Models.
These models utilize a DIN mountin /connec-
tion installation. They are desi ned for installation on a
24mm tube/female DIN connector.
NOTE
If a user-supplied switch is used, it must have a
current capacity of at least 8-amperes.
1. Loosen the win nut on the base of the li ht
assembly.
2. Slide the li ht assembly onto the 24mm
tube/female DIN connector. Ensure that the connector is
seated in the base of the li ht.
3. Fin er-ti hten the win nut until the base
is snu on the DIN connector.
4. Install a user-supplied fuseholder in the
li ht’s positive lead and install a 8-ampere fuse in the
fuseholder.
IV. MAINTENANCE.
A. General.
WARNING
Crazin (crackin ) of domes will cause reduced
effectiveness of the li ht. Do not use cleanin
a ents (which will cause crazin ) such as stron
deter ents, solvents, or petroleum products. If
crazin of dome does occur, reliability of li ht for
emer ency si nallin purposes may be reduced
until dome is replaced.
1. The dome can be cleaned usin a non-
abrasive, hi h quality, automotive paste wax and a soft
cloth.
2. On ma netic mount li hts, periodically
inspect the ma net for dirt and metal shavin s. Clean
the ma net as necessary. Keep the area around the
ma netic mount li ht free of dirt and metal shavin s.
3. Apply a film of li ht rease to the ears
when necessary.
B. Lamp Replacement.
WARNING
A serious injury may result if lamp is touched
when hot. Always allow lamp to cool before
removin . Halo en lamps are pressurized and if
broken can result in flyin lass. Always wear
loves and eye protection when handlin the
lamps.
CAUTION
Service life of lamp will be shortened if lass
portion is touched. If lass has been handled,
clean carefully with a rease solvent.
1. Rotate the reflector until the C-clip (located
at the base of the lamp) can be removed, and remove the
C-clip by slidin it away from the reflector.
2. See fi ure 3. Note the lamp’s orientation
and replace the lamp with the strai ht ed e of the
lamp’s base toward the reflector. Replace the 12V lamp
with Part No. 8440A265 and the 24V lamp with Part
No. 8444A151.
C. Mechanism Removal (for servicing).
1. Push and hold the dome release button
(located in the plastic base). Turn the dome counter-
clockwise and lift the dome off the base (see fi ure 1).
2. Disconnect power to the li ht. Disconnect
the red and black leads in the li ht.
3. See fi ure 1. Push and hold the mechanism
release tabs.
4. Slide the mechanism over the release tabs
and lift the mechanism out of the base.
5. After servicin , replace the mechanism by
performin the above steps in reverse order.
Figure 3.
290A2600-01
H-I HALOGEN LAMP
LAMP BASE
LAMP SOCKE
CONNEC OR
GROOVES(2)
GEAR AND REFLEC OR
ASSEMBLY
ORIEN ED PARALLEL
O GROVES IN
LAMP SOCKE
SLIDE CLIP OVER
LAMP BASE IN O
GROOVES ON
LAMP SOCKE
DO NO OUCH
GLASS POR ION
OF LAMP