Federal Signal Corporation Commander 371ST-250 Handbuch

256820E

REV. E 811

Printed in U.S.A.

Commander®

Strobe Warning Light

Model 371ST-250

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 Sys-

tems 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 unenforce-

able. 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 al-

leged 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.

Industrial Systems

2645 Federal Signal Drive • University Park, IL 60484-3167

Tel: 708-534-4756 • Fax: 708-534-4852

Email: elp@federalsignal.com • www.federalsignal-indust.com

Model 371ST-250 Strobe Light 3

Contents

Safety Messages to Installers .......................................................... 5

An Overview of Model 371ST-250..................................................... 6

Unpacking the Light.......................................................................... 6

Mounting the Light ............................................................................ 7

Pipe Mounting the Light .......................................................... 8

Surface Mounting the Light ..................................................... 8

Wiring the Light ................................................................................. 9

Safety Messages to Maintenance Personnel ................................ 11

Replacing the Flash Tube................................................................ 12

Cleaning the Dome.......................................................................... 14

Getting Service, Assistance, and Parts ......................................... 14

Repair Service ....................................................................... 14

Technical Assistance ............................................................... 14

Accessories and Replacement Parts ....................................... 15

Tables

Table 1 Electrical and environmental ratings......................................7

Table 2 Dimensions............................................................................7

Table 3 Replacement parts ..............................................................15

Table 4 Accessories ......................................................................... 15

4Model 371ST-250 Strobe Light

Contents

Figures

Figure 1 Mounting options .................................................................8

Figure 2 Dome and lens assembly removed ...................................10

Figure 3 Flash tube replacement..................................................... 13

Installation and Maintenance Instructions

Model 371ST-250 Strobe 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.

• 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.

Installation and Maintenance Instructions

Model 371ST-250 Strobe Light

An Overview of Model 371ST-250

The Federal Signal Model 371ST is a single-ash strobe housed

in a Type 4X enclosure. At 60 ashes per minute and 275 effective

candela, the Commander® is the largest strobe signal in the Federal

Signal product line.

The 371ST-250 features a heat resistant glass dome available in

three colors: amber, blue, and red. The letter (A, B, or R) after the

model number 371ST-250 represents the dome color. The dome-

and-ring assembly screws on for easy access to the strobe tube and

printed circuit board assembly.

The base of the Commander 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 side

knockouts can be used for side entry wiring. Installation can be

surface or 1-inch NPT pipe mount. Optional wall and corner

mount brackets are available for the 371ST. The Commander is

rated Type 4X, IP66 (watertight, dust tight, corrosion resistant).

The LWMB2 wall-mount bracket and the LCMB2 corner-mount

bracket can be used to mount the Model 271ST-250. For surface

mounting on solid substrates, the separately purchased Model

371BRCKT three-point surface-mount bracket is available.

Unpacking the Light

After unpacking the Model 371ST-250, 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.

Installation and Maintenance Instructions

Model 371ST-250 Strobe Light

Table 1 Electrical and environmental ratings

Operating Voltage: 225 Vdc to 300 Vdc

Operating Current: 0.25 A

Energy Output: 10.0 J

Flash Rate: 60 FPM

Candela, Peak

1:625,000

ECP

2:275

Lamp Life: 10,000 Hours

Light Source: Strobe Tube

Operating Temperature: –31 °F to 150 °F

(–35 °C to 66 °C)

Environmental Ratings: Type 4X, IP66

1 Peak candela is the maximum light intensity generated by

a ashing light during its light pulse.

2ECP (Effective Candela) is the intensity that would

appear to an observer if the light were burning steadily.

Table 2 Dimensions

Height: 11.38 in (289.0 mm)

Diameter: 9.13 in (231.9 mm)

Net Weight: 10.0 lb (4.54 kg)

Shipping Weight: (12.4 lb) 5.62 kg

Mounting the Light

The Model 371ST-250 light is designed for mounting on a at

horizontal surface or on a 1" NPT pipe. 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 and Maintenance Instructions

Model 371ST-250 Strobe Light

Figure 1 Mounting options

371ST-250 LIGHT

ASSEMBLY

PIPE MOUNT

PIPE MOUNT SURFACE MOUNT

GASKET

MOUNTING

SURFACE

1/4" FLATWASHERS

DRILL THREE 9/32"

(7.143 mm) HOLES

1/4" SCREWS

1" NPT

PIPE

290A3948B

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.”

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" (7.1 mm) diameter hole at each of the outside

drill position marks for mounting.

3. Drill or punch a 1-3/8" (34.9 mm) diameter hole at the

center drill-position mark for the wire entry.

Installation and Maintenance Instructions

Model 371ST-250 Strobe Light

4. Attach 1" NPT conduit or a suitable user-supplied 1" NPT

hub or connector to the conduit entrance in the bottom of

the light.

5. Set the light on the gasket and attach it to the mounting

surface with the provided 1/4" screws and washers.

6. For information on making the electrical connections, see

the next section.

Wiring the Light

SHOCK HAZARD

To avoid electrical shock hazards, do not connect wires while

power is applied.

The Model 371ST-250 comes assembled from the factory. Models

are supplied with two power leads for wiring to the supply circuit.

If you are using conduit side entries or if you are using the housing

as a junction box, perform the following steps:

1. Disassemble the light:

a) Remove the dome assembly by grasping the die-cast ring

attached to the dome and turning it counter-clockwise.

b) Remove the three #10 hex-head screws that secure the

strobe-spinning assembly to the housing.

c) Remove the strobe-spinning assembly.

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 user-supplied) to

the housing and tighten the hub securely. When side entries

are used, the bottom 1-inch NPT conduit entry must be

plugged with a threaded plug (user-supplied). (See Table 4:

Accessories on page 15).

NOTE: Polarity MUST be observed for proper operation.

Installation and Maintenance Instructions

Model 371ST-250 Strobe Light

Figure 2 Dome and lens assembly removed

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

290A3949B

CONDUIT HUB

(USER SUPPLIED)

CONDUIT NUT

(USER SUPPLIED)

CONDUIT PLUG

(USER SUPPLIED)

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