Federal Signal Corporation 371DST Manual

256A504H
REV. H 613
Printed in USA.
Model 371DST
for Commander®
Strobe Lights
Installation and
Maintenance Manual
français...............page 8
español...............página 15

blank page

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Installation and Service Instructions for Commander®
Model 371DST Strobe Lights
Safety Message to Installers,
Users and Maintenance Personnel
It is important to follow all instructions shipped with this product. This device is to be installed by a trained
electrician who is thoroughly familiar with the National Electric Code/Canadian Electric Code and will follow
the NEC/CEC Guidelines as well as local codes.
The selection of mounting location for the device, its controls and the routing of the wiring is to be
accomplished under the direction of the facilities engineer and the safety engineer. In addition, listed below
are some other important safety instructions and precautions you should follow:
•Read and understand all instructions before installing or operating this equipment.
•To reduce the risk of ignition of hazardous atmospheres, disconnect the fixture from the supply circuit
before opening. Keep tightly closed when in operation.
•The strobe housing is not be used as a raceway for through branch circuit conductors.
•After installation, ensure that the threaded dome ring joint is fully engaged.
•After installation, test the light system to ensure that it is operating properly.
•After testing is complete, provide a copy of this instruction sheet to all operating personnel.
•Establish a procedure to routinely check the light installation for integrity and proper
operation.
Failure to follow all safety precautions and instructions may result in property damage, serious injury, or death
to you and others.
I. INSTALLATION
A. Unpacking.
After unpacking the light, examine it for damage that may have occurred in transit. If the equipment has
been damaged, do not attempt to install or operate it. File a claim immediately with the carrier stating
the extent of the damage. Carefully check all envelopes, shipping labels, and tags before removing or
destroying them.
B. Mounting (see gure 1).
CAUTION
To reduce the risk of fire or explosion, do not install in hazardous location if the operating
temperature exceeds the hazardous atmosphere’s ignition temperature. Refer to the product
nameplate for operating temperature markings.
The Model 371DST lights are designed for mounting on a flat horizontal surface or on a 1” NPT
pipe. For surface mounting on solid substrates, a separately purchased Model 371BRCKT (3-point
mounting bracket) may be used. When using Model 371BRCKT, the bottom 1” NPT conduit entry
of the light must be plugged with the 1” NPT close-up plug provided with the kit. If conduit side
entry is to be used, disassemble light as described in section ID.1 and remove knockout with a
blunt tool prior to mounting light. Use a file to remove excess flash around the knockout.

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1. Pipe Mounting
a.Attach light to pipe by turning clockwise.
b. Refer to section D for information on making electrical connections.
2. Surface Mounting
a. Using the gasket as a template, scribe four drill position marks on the mounting surface. Drill a 9/32”
(7.1 mm) diameter hole at each of the outside drill position marks for mounting. Drill or punch a 1-3/8”
(34.9 mm) diameter hole at the center drill position mark for wire entry.
b. Attach 1” NPT conduit or suitable user supplied 1” NPT hub or connector to conduit entrance in
bottom of light.
c. Set light on gasket and attach to the mounting surface using the provided 1/4” screws and washers.
d. Refer to section D for information on making electrical connections.
C. Specifications.
Operating Voltage 12-24VDC 120 VAC 50/60 Hz 230-240 VAC 50/60 Hz
Operating Current 2.10A 0.60A 0.30A
Energy Output 10.0 Joules 10.0 Joules 10.0 Joules
Flash Rate 72-88 FPM 72-88 FPM 72-88 FPM
Operating Temperature -31°F to 104°F -31°F to 104°F -31°F to 104°F
(-35°C to 40°C) (-35°C to 40°C) (-35°C to 40°C)
Approvals UL, cUL UL, cUL UL, cUL
Environmental Ratings Type 4X, IP66 Type 4X, IP66 Type 4X, IP66
D. Electrical Connections (see figure 2)
The Model 371DST comes assembled from the factory with three color-coded leads for wiring to a
junction box. If desired, the factory leads can be removed and the supply connections can be directly
made to the terminal block located on the backside of the mounting bracket as described below.
To avoid electrical shock hazards, do not connect to supply circuit when power is applied.
1. Disassemble the light as follows:
a. Remove dome assembly by grasping the die-cast ring attached to the dome and turning it
counter-clockwise.
b. Remove three #10 hex head screws that secure strobe-spinning assembly to housing.
c. Remove strobe-spinning assembly.
d. If desired, remove the factory field wiring leads from the terminal block.
2. If conduit side entry is to be used, attach either Myers STNTB-2 or T&B H075-TBH 3/4”
N.P.T. conduit hub with 3/4” N.P.T. close nipple (all user-supplied) to housing and tighten securely.
When using side entry, the bottom 1” NPT conduit entry must be plugged with a UL listed threaded
plug (user-supplied).
3. Route supply wires (10 AWG to 16 AWG) into the housing.

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4. Strip a maximum of .28” (7 mm) of wire insulation from the ends of the power leads. Connect wires to
terminal block by inserting the stripped ends of the wire into the connector as far as they can travel and
tightening the clamping screw (max. tightening torque = 7.0 in-lbs {.8 N-m}).
NOTE
For DC models, polarity must be observed for proper operation. Connect the positive power supply
lead to the (+) terminal and the negative power supply lead to the (-) terminal.
5. Connect earth ground to terminal block and green ground screw located in housing.
6. Re-assemble the light and test for proper operation.
II. MAINTENANCE.
SAFETY MESSAGE TO MAINTENANCE PERSONNEL
Listed below are some important safety instructions and precautions you should follow:
•Read and understand all instructions before operating this system.
•Any maintenance to the light system must be done with the power turned off.
• Any maintenance to the light system must be performed by a trained electrician in accordance with
NEC/CEC Guidelines and local codes.
• Never alter the unit in any manner. Safety may be endangered if additional openings or other alterations
are made to units.
• The nameplate, which contains cautionary or other information of importance to maintenance
personnel, should not be obscured.
•If the dome is damaged in any way, the complete dome assembly MUST be replaced.
•After performing any maintenance, test the light system to ensure that it is operating properly.
A. FLASHTUBE REPLACEMENT (see gure 3).
After extended operation, occasionally check for flash tube degradation. Should the flash tube misfire,
have a noticeable decrease in light output, glow continuously or darken- replacement is necessary.
WARNING
HIGH VOLTAGES ARE PRESENT INSIDE THE LIGHT ASSEMBLY. WAIT AT LEAST 5 MINUTES AFTER
SHUTTING OFF POWER BEFORE SERVICING THIS UNIT.
To replace strobe tube, proceed as follows:
1. Remove the dome assembly by grasping the die-cast ring attached to the dome and turning it
counter-clockwise. If difficulty occurs removing the dome assembly, place a screwdriver blade against
one of the four bosses on the die-cast ring attached to the dome. Gently tap the screwdriver handle
to loosen the dome assembly from the housing.
WARNING
To maintain the watertight enclosure, do not damage dome or threads while disassembling or
reassembling the unit. Lubricated threaded joints exposed for long periods of time may attract small
particles of dirt or other foreign materials. Re-assemble joint immediately after performing maintenance.
2. Remove the two #8 screws retaining the fresnel lens to it’s mounting base and lift the lens off the
metal spinning.

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3. Carefully remove the ash tube from its socket by grasping the connector and lifting
upwards using a slight rocking motion.
4. See replacement parts table (Section IIB) for a complete list of Federal Signal lamps that
are available. Install a new ash tube by fully seating it into the socket.
5. Reassemble the unit.
6. Test light for proper operation.
B. Replacement Parts.
Description Part No.
Plastic Dome Assembly, Amber K8459125
Plastic Dome Assembly, Blue K8459125-01
Plastic Dome Assembly, Clear K8459125-02
Plastic Dome Assembly, Gree K8459125-03
Plastic Dome Assembly, Red K8459125-04
Fresnel lens, Clear K8422B428
Dome ring gasket K8459123
Surface mount gasket K8459127
Strobe Tube K8107178
Printed circuit board assy., 12-24VDC K2001265-01
Printed circuit board assy., 120VAC K200865-02
Printed circuit board assy., 240VAC K200865-03
C. Accessories.
Description Part No.
Mounting Bracket, Surface 371BRCKT
Conduit hub kit, 3/4” N.P.T. 8459138
Close-up plug, 1” N.P.T. 8459130A
III. SERVICE
The Federal factory will service your equipment or provide technical assistance with any
problems that cannot be handled locally.
Any units returned to Federal Signal for service, inspection, or repair must be accompanied by a
Return Material Authorization. This R.M.A. can be obtained from a local Distributor or
Manufacturer’s Representative.
At this time a brief explanation of the service requested, or the nature of the malfunction, should
be provided.
Address all communications and shipments to:
Industrial Systems
2645 Federal Signal Drive • University Park, IL 60484-3167
Tel.: [phone] • 1-877-289-3246 • Fax: [phone]
www.federalsignal-indust.com • www.fs-isys.com

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371 LIGHT
ASSEMBLY
PIPE MOUNT SURFACE MOUNT
GASKET
MOUNTING
SURFACE
1/4" FLATWASHERS
DRILL (3) 9/32"
(7.143 mm) HOLES
1/4" SCREWS
1" NPT PIPE
290A3944
Figure 1

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Figure 2
DOME
ASSEMBLY
DIE CAST
RING
GASKET
GROUND
SCREW
STROBE
SPINNING
ASSEMBLY
SCREWS, #10
HEX HEAD (3)
BASE
TURN DIE CAST RING
COUNTER-CLOCKWISE
TO REMOVE
290A3945
A
TERMINAL
BLOCK
.28"
(7mm)
A
CONDUIT HUB
(USER SUPPLIED)
CONDUIT NUT
(USER SUPPLIED)
CONDUIT PLUG
(USER SUPPLIED)

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Figure 3
DOME
ASSEMBLY
DIE CAST
RING
FRESNEL
LENS
#8 SCREWS (2)
METAL
SPINNING
FLASH TUBE
BASE
TURN DIE CAST RING
COUNTER-CLOCKWISE
TO REMOVE
290A3946

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Consignes d’installation et d’utilisation du Commander®
Lumières stroboscopiques, modèle 371DST -
Message de sécurité destiné aux installateurs,
aux utilisateurs et au personnel d’entretien
Il est important de respecter toutes les consignes jointes à ce produit au moment de l’expédition. Cet
appareil doit être installé par un électricien qualifié qui maîtrise parfaitement le Code national d’électricité /
Code d’électricité canadien et qui respectera les directives CNE/CCE ainsi que les codes locaux.
Le choix du lieu de montage du dispositif, de ses commandes et de l’acheminement des câbles doit être
effectué sous la direction de l’ingénieur responsable des installations et de l’ingénieur responsable de la
sécurité. Voici par ailleurs une liste complémentaire d’instructions et de précautions de sécurité importantes
à respecter :
•Lire et comprendre toutes les instructions avant d’installer ou d’utiliser ce matériel.
•Pour réduire le risque d’incendie dans des atmosphères dangereuses, déconnecter l’appareil du circuit
d’alimentation avant de l’ouvrir. Maintenir le dispositif fermé en cours d’utilisation.
• L’enceinte du stroboscope ne doit pas être utilisée comme chemin de câbles pour les conducteurs de
dérivation de passage.
•Après l’installation, s’assurer que le joint annulaire fileté du dôme est complètement enclenché.
•Après l’installation, tester le système lumineux pour s’assurer qu’il fonctionne correctement.
•Une fois les tests terminés, fournir une copie de cette fiche de consignesà tout le personnel de service.
• Établir une procédure de vérification régulière de l’intégrité et du bon fonctionnement de l’installation
d’éclairage.
Le non-respect de l’ensemble des mesures et consignes de sécurité peut entraîner des dommages matériels
ou entraîner des blessures graves voire mortelles pour les personnes concernées et d’autres personnes.
I. INSTALLATION
A. Déballage.
Après avoir déballé la lumière, vérifier soigneusement si elle a été endommagée lors du transport.
Si l’équipement a été endommagé, ne pas tenter de l’installer ou de le faire fonctionner. Déposer
immédiatement une réclamation auprès du transporteur, déclarant l’étendue des dommages. Examiner
soigneusement toutes les enveloppes, étiquettes d’expédition et autres étiquettes avant de les retirer ou
de les détruire.
B. Montage (voir Illustration 1).
ATTENTION
Pour réduire le risque d’incendie ou d’explosion, ne pas installer dans une zone dangereuse si la
température de fonctionnement dépasse la température d’allumage de l’atmosphère dangereuse.
Se reporter à la plaque signalétique du produit pour consulter les marquages de température de
fonctionnement.
Les lumières du modèle 371DST sont conçues pour un montage sur une surface horizontale plate
ou sur un tube à filetage conique 25,4 mm (1 po.). Pour un montage en surface sur substrats
solides, on peut utiliser un modèle 371BRCKT vendu séparément (support de montage en 3 points).
Lorsque le modèle 371BRCKT est utilisé, l’entrée de conduit de 2,54 cm (1 po.) à filetage conique
de la partie inférieure du feu doit être fermée avec un bouchon de 25,4 mm (1 po.) à filetage conique
fourni dans le kit. Si l’entrée latérale du conduit doit être utilisée, démonter la lumière comme indiqué
dans la section ID.1, puis retirer une entrée défonçable avec un instrument contondant avant de
remonter la lumière. Retirer les éclats autour de l’entrée défonçable à l’aide d’une lime.