Federal Signal Corporation A12SA Installations- und Benutzerhandbuch

2020118

Rev 9 0323

Printed in U.S.A

Service and Maintenance Instructions

A12SA Amdt B

Las instrucciones en español comienzan en la página 13

Pour voir ce manuel en français, allez à www.fedsig.com

Limited Warranty

This product is subject to and covered by a limited warranty,

a copy of which can be found at www.fedsig.com/SSG-Warranty.

A copy of this limited warranty can also be obtained by written

request to Federal Signal Corporation, 2645 Federal Signal Drive,

University Park, IL 60484, email to [email protected] or

call +1 708-534-3400.

This limited warranty is in lieu of all other warranties, express or

implied, contractual or statutory, including, but not limited to the

warranty of merchantability, warranty of tness for a particular

purpose and any warranty against failure of its essential purpose.

2645 Federal Signal Drive

University Park, Illinois 60484

www.fedsig.com

National telephone: 93.450.69.87

International telephone: 34.450.69.88

Installation and Maintenance Instructions

Federal Signal www.fedsig.com

Contents

Safety Message to Installers and Service Personnel.....................4

Overview.............................................................................................4

Unpacking the Voice Gun .................................................................6

Operating the Voice Gun...................................................................6

Cleaning the Voice Gun ....................................................................7

Replacing the Batteries.....................................................................7

Troubleshooting ................................................................................8

Getting Repair Service......................................................................9

Replacement Parts..........................................................................10

Figures

Figure 1 Dimensions........................................................................5

Figure 2 Diagram..............................................................................7

Figure 3 Battery Cartridge...............................................................8

Figure 4 Parts..................................................................................10

Tables

Table 1 Product specications.......................................................5

Table 2 Replacement Parts .........................................................11

Overview

A12SA

Federal Signal www.fedsig.com

Safety Message to Installers and Service Personnel

People’s lives depend on your proper installation and servicing

of Federal Signal products. It is important to read and follow all

instructions shipped with this product. Listed below are some

other important safety instructions and precautions you should

follow:

• Your hearing and the hearing of others, close to the

electronic megaphone, could be damaged by loud sounds.

This can occur from short exposures to very loud sounds,

or from longer exposures to moderately loud sounds. For

hearing conservation guidance, refer to community, state, or

local recommendations.

• File these instructions in a safe place and refer to them when

maintaining and/or reinstalling the product.

Failure to follow all safety precautions and instructions may

result in property damage, serious injury, or death.

Overview

The Federal Signal Vama Voice Gun (Model A12SA Amdt.B)

electronic megaphones are designed for long, trouble-free

service and simple operation. The following should be observed

to obtain maximum results:

• Operating power for the electronic megaphone is supplied

by eight AA batteries (not supplied). Standard AA size

alkaline batteries are recommended for greater volume and

life.

Do not use mercury cells. If the polarity of mercury cells is

reversed, damage to the instrument may result.

• The Class B ampliﬁer draws very little current, even with the

trigger button pressed, except when actually speaking into

the microphone. This results in excellent eciency and long

battery life. In instances where the electronic megaphone is

Overview

Service and Maintenance Instructions

Federal Signal www.fedsig.com

used for short periods a few times a week, batteries may last

from six months to one year. Batteries should be replaced at

least yearly to avoid possibly exceeding their shelf life.

Table 1 Product specications

Output power 16 W

Current consumption 160-200 mA

Voltage 12 V, 8 AA batteries.

Amplier 3-stage, Class B output.

Speaker Re-entrant horn and driver type

Microphone Noise-cancelling, magnetic

Carrying strap Nylon, adjustable

Weight (with batteries) 1.4 kg

Figure 1 Dimensions

266 mm

257 mm

184 mm

Operating the Voice Gun

A12SA

Federal Signal www.fedsig.com

Unpacking the Voice Gun

After unpacking the unit, inspect it for damage that may

have occurred in transit. If it has been damaged, 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.

Operating the Voice Gun

Your hearing and the hearing of others, close to the electronic

megaphone, could be damaged by loud sounds. This can

occur from short exposures to very loud sounds or from longer

exposures to moderately loud sounds. For hearing conservation

guidance, refer to community, state, or local recommendations.

To operate the voice gun:

1. Press the trigger button and speak into the microphone.

Press the button only when actually speaking.

2. Hold the electronic megaphone with one hand. Do not place

your other hand around the mouthpiece. The unit has been

designed with a crisp response to increase intelligibility,

particularly when used under noisy conditions. If it is

operated in a small, empty room, a slight ringing sound may

be noticed.

3. For simplicity, no external volume control is used. Volume is

controlled entirely by voice intensity. FOR BEST RESULTS

AND UNVARYING SOUND REPRODUCTION, YOUR LIPS

SHOULD BE IN CONTACT WITH THE MICROPHONE

HOUSING.

4. For maximum intelligibility and eectiveness, ensure that the

open bell side of the Voice Gun is facing those to whom you

are speaking.

NOTE: The volume is preset at the factory and normally should

not need to be readjusted. If and when necessary, it can be

adjusted by removing the rubber plug on the horn at the rear of

the handle and inserting a small screwdriver. Turning the control

Replacing the Batteries

Service and Maintenance Instructions

Federal Signal www.fedsig.com

to the left decreases the microphone sensitivity, and turning to

the right (clockwise) increases sensitivity. Control should be set

just below the point of feedback under existing conditions.

Rubber plugs should be reinserted, forcing it in place with a

small screwdriver.

Figure 2 Diagram

Microphone

Volume Adjustment Plug

Battery Cartridge

Trigger Button

Speaker

Cleaning the Voice Gun

Molded parts of the Voice Gun electronic megaphone are made

of exceptionally tough and rugged material. When cleaning

molded parts, use a damp cloth and mild detergent. Do Not use

solvent or strong cleaning agents.

Replacing the Batteries

Power is supplied by eight AA batteries. At least 1500 to 3000

ten-second messages should be expected from one set of

batteries. It is recommended that batteries be replaced yearly,

even if the unit is still functioning. For longer shelf life and much

longer operating life, alkaline batteries are recommended.

To replace the batteries:

1. Apply slight pressure with your thumb against the battery

cartridge at the bottom of the handle.

2. Remove the locking thumb screw. If it is tight, the screw may

be started with a thin coin.

Troubleshooting

A12SA

Federal Signal www.fedsig.com

3. Remove the cartridge.

4. Place the batteries in position with the small battery tip

pointing away from the springs at the top and bottom of the

cartridge. See Figure 3.

Figure 3 Battery Cartridge

Troubleshooting

If no sound produced or if no “click” is heard when the switch

button is pressed, try the following:

• Check for dead or extremely weak AA 1.5 V batteries or one

or more dead cells.

• Check for proper installation of the batteries in the cartridge.

• Reinstall the cartridge and batteries in the handle.

If these actions do not resolve the issue, the ampliﬁer assembly

is defective and should be replaced or repaired.

Getting Repair Service

Service and Maintenance Instructions

Federal Signal www.fedsig.com

Getting Repair Service

Should the electronic megaphone not function or not

function properly after proper installation of good batteries,

contact the factory and brieﬂy describe the diculty. Address

communications to:

Service Department

Federal Signal Vama

National telephone: 93.450.69.87

International telephone: 34.450.69.88

C/Dr. Ferrán, 7 (08339), Vilassar de Dalt

Spain

Replacement Parts

A12SA

Federal Signal www.fedsig.com

Replacement Parts Figure 4 Parts

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