Federal Signal Corporation Commander 371LED-120B Manual

2562671A
REV. A2 1118
Printed in U.S.A.
français...............page 17
español...............página 33
Commander® Rotating Light
Model 371LED-120
Installation and
Maintenance Manual

Warranty – Seller warrants all goods for ve years on parts and 2-1/2 years
on labor, under the following conditions and exceptions: Seller warrants that
all goods of Seller's manufacture will conform to any descriptions thereof
for specications which are expressly made a part of this sales contract and
at the time of sale by Seller such goods shall be commercially free from
defects in material or workmanship. Seller reserves the right at the Seller’s
discretion to “Repair and Return” or “Replace” any item deemed defective
during the warranty period. This warranty does not cover travel expenses,
the cost of specialized equipment for gaining access to the product, or labor
charges for removal and reinstallation of the product. This warranty shall be
ineffective and shall not apply to goods that have been subjected to misuse,
neglect, accident, damage, improper maintenance, or to goods altered or
repaired by anyone other than Seller or its authorized representative, or if
ve years have elapsed from the date of shipment of the goods by Seller with
the following exceptions: lamps and strobe tubes are not covered under this
warranty. Outdoor warning sirens and controllers manufactured by Federal
Warning Systems are warranteed for two years on parts and one year on labor.
No agent, employee, representative or distributor of Seller has any authority
to bind the Seller to any representation, afrmation, or warranty concerning
the goods and any such representation, afrmation or warranty shall not be
deemed to have become a part of the basics of the sales contract and shall
be unenforceable. THE FOREGOING WARRANTIES ARE EXCLUSIVE
AND IN LIEU OF ALL OTHER WARRANTIES OR MERCHANTABILITY,
FITNESS FOR PURPOSE AND OF ANY OTHER TYPE, WHETHER
EXPRESS OR IMPLIED. These warranties shall not apply unless Seller
shall be given reasonable opportunity to investigate all claims for allegedly
defective goods. Upon Seller's instruction a sample only of allegedly defective
goods shall be returned to Seller for its inspection and approval. The basis of
all claims for alleged defects in the goods not discoverable upon reasonable
inspection thereof pursuant to paragraph 8 hereof must be fully explained
in writing and received by Seller within thirty days after Buyer learns of the
defect or such claim shall be deemed waived.
2645 Federal Signal Drive • University Park, IL 60484-3167
Tel: [phone] • Fax: [phone]
Email: [email protected]
www.fedsig.com

Model 371LED-120 Rotating Light
3
Figures
Figure 1 Mounting options................................................................8
Figure 2 Connecting leads to the terminal block.............................11
Contents
Safety Messages to Installers ..........................................................5
An Overview of the Model 371LED-120 ...........................................6
Unpacking the Light..........................................................................6
Mounting the Light ............................................................................8
Pipe Mounting the Light .......................................................... 8
Surface Mounting the Light ..................................................... 9
Wiring the Light .................................................................................9
Safety Messages to Maintenance Personnel................................12
Maintaining the Model 371LED-120 ...............................................12
Getting Service, Assistance, and Parts......................................... 13
Repair Service ....................................................................... 13
Technical Assistance ............................................................... 13
Accessories and Replacement Parts ....................................... 13
Returning the Product for Credit ...................................................15

4
Model 371LED-120 Rotating Light
Contents
Tables
Table 1 Electrical and environmental ratings .....................................7
Table 2 Dimensions............................................................................7
Table 3 Replacement parts ..............................................................14
Table 4 Accessories .........................................................................14

5
Installation and Maintenance Instructions
Model 371LED-120 Rotating Light
Safety Messages to Installers
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 Electrical Code and/or
Canadian Electrical Code and will follow the NEC and/or CEC
Guidelines as well as all local codes. This light should be considered
a part of the warning system and not the entire warning system.
The selection of the mounting location for the light, its controls
and the routing of the wiring are 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 light.
• Do not connect this light to the system when power is on.
• After installation, make sure that all set screws and threaded
joints are properly tightened.
• To be an effective warning device, this product produces bright
light that can be hazardous to your eyesight when viewed at a
close range. Do not stare directly into this lighting product at a
close range or permanent damage to your eyesight may occur.
• After installation, test the light to make sure that it is
operating properly.
• After testing is complete; provide a copy of this instruction
booklet to all personnel.
• Establish a procedure to routinely check the light for proper
activation and operation.
Failure to follow all safety precautions and instructions may result
in property damage, serious injury, or death.

6
Installation and Maintenance Instructions
Model 371LED-120 Rotating Light
An Overview of the Model 371LED-120
Federal Signal Model 371LED-120 warning light incorporates
an array of high power LEDs, a custom optic, and a rotating
reector to focus a beam of light that rotates 360 degrees within
|a plastic dome.
The Model 371LED-120 features a impact-resistant plastic dome.
The Model 371LED is available in ve colors: amber, blue, clear,
green, and red. The dome-and-ring assembly screws on, providing
access to the interior of the light. The base features textured black
powder paint for greater corrosion-resistance. Wiring can be routed
through the pipe-mount opening in the bottom of the light or the
two side knockouts can be used for side entry wiring. Installation
can be surface or 1-inch NPT pipe mount.
Also available is an optional wall-mount bracket. The LHWB
wall-mount bracket can be used to mount the Model 371LED. For
surface mounting on solid substrates, the separately purchased
Model 371BRCKT three-point surface-mount bracket is available.
Unpacking the Light
After unpacking the light, examine it for damage that may
have occurred in transit. If the light 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 discarding
them. Disposal of all shipping materials must be carried out in
accordance with national and local codes and standards. If any
parts are missing, please call Federal Signal Customer Support at
708-534-4756.

7
Installation and Maintenance Instructions
Model 371LED-120 Rotating Light
Table 1 Electrical and environmental ratings
Operating Voltage: 120 Vac 50 Hz/60 Hz
Flash Rate: 60 FPM
Maximum Operating
Current, mA:
320 mA
In-rush Current: 25.1 A for 0.63 ms
Operating
Temperature:
-31°F to 104°F (-35 °C to 40°C)
Environmental
Ratings:
Type 4X, IP66
Table 2 Dimensions
Height: 11.38 in (288.9 mm)
Diameter: 9.12 in (231.6 mm)
Net Weight: 7.1 lb (3.2 kg)
Shipping Weight: 8.1 lb (3.7 kg)
Mounting the Light
The Model 371LED-120 light is designed for mounting on a at
horizontal surface or on a 1-inch NPT pipe. For surface mounting on
solid substrates, the separately purchased Model 371BRCKT surface
mounting bracket can be used. If conduit side-entries are to be used,
disassemble the light as described in “Wiring the Light” on page 9 and
remove one or more knockouts with a blunt tool before mounting the
light. Use a le to remove excess ash around the knockout.
INSTALLATION NOTE: To avoid moisture buildup within the
light enclosure in highly humid areas where condensation is present
in the conduit system, duct sealant or other suitable materials are
recommended for sealing the wires/conduit entrances.

8
Installation and Maintenance Instructions
Model 371LED-120 Rotating Light
Pipe Mounting the Light
Attach the light to the 1-inch NPT pipe by threading the light
clockwise on the pipe (Figure 1). For information on making the
electrical connections, see “Wiring the Light” on page 9.
Figure 1 Mounting options
371LED-120 LIGHT
ASSEMBLY
PIPE MOUNT SURFACE MOUNT
GASKET
MOUNTING
SURFACE
1/4" FLATWASHERS
DRILL THREE 9/32"
(7.143 mm) HOLES
1/4" SCREWS
1" NPT
PIPE
290A6859
Surface Mounting the Light
To mount the light on a at surface:
1. Using the gasket as a template, scribe four drill-position
marks on the mounting surface (Figure 1).
2. Drill a 9/32-inch (7.1 mm) diameter hole at each of the
outside drill-position marks for mounting.
3. Drill or punch a 1-3/8 inch (34.9 mm) diameter hole at the
center drill-position mark for the wire entry.
4. Attach a suitable 1-inch NPT hub or connector to conduit

9
Installation and Maintenance Instructions
Model 371LED-120 Rotating Light
entrance in bottom of light. For Type 4X/IP66 applications,
the hub or connector must be suitably rated (Myers®
STTTB-2 or T&B® H100-TB hubs are recommended.)
5. Set the light on the gasket and attach it to the mounting
surface with the provided 1/4-inch screws and washers.
6. For information on making the electrical connections, see
below.
Wiring the Light
SHOCK HAZARD
To avoid electrical shock hazards, do not connect wires while
power is applied.
The Model 371LED comes assembled from the factory with two
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 bottom of the
light base as described below
1. Disassemble the light (Figure 2 on page 11):
a) Remove the dome assembly by grasping the die-cast ring
attached to the dome and turning it counter-clockwise.
b) Remove three #10 Phillips screws that secure the LED/
motor module to the housing.
c) Remove the LED/motor module.
d) If preferred, remove the factory-supplied leads from the
terminal block.

10
Installation and Maintenance Instructions
Model 371LED-120 Rotating Light
2. If you are using conduit side-entries, attach a Myers®
STTTB-2 or a T&B® H075TBH 3/4-inch NPT conduit hub
with a 3/4-inch NPT close nipple (both installer-supplied)
to the housing and securely tighten the hub. When side
entries are used, the bottom 1-inch NPT conduit entry must
be plugged with a threaded plug (installer-supplied). (See
“Table 4 Accessories” on page 14.)
3. Route the supply wires (10 AWG to 16 AWG) into the light
housing.
4. Strip a maximum of 0.28 inch (7 mm) of insulation from
the ends of the power leads. Connect the wires to the
terminal block by inserting the stripped ends of the wires
into the connectors as far as they can travel.
5. Tighten the clamping screw. The maximum tightening
torque is 7.0 in-lb (0.8 N•m).
6. Connect the earth ground to the terminal block.
7. Reassemble the light and test it for proper operation.