DESK-SET-INTERCOMS INSTALLATION AND SERVICE INSTRUCTIONS FOR MODELS AD-26T, AD-27T, AD-56T, and AD-57T Address all communications and shipments to: Electrical Products Division 2645 Federal Signal Drive University Park, IL 60466-3195 (888) 751-1500
INSTALLATION-AND-SERVICE-INSTRUCTIONSFOR-ATKINSON-DYNAMICS-DESK-SET-INTERCOMS SAFETY MESSAGE TO INSTALLERS, USERS, AND MAINTENANCE PERSONNEL It is important to follow all instructions shipped with this product. This device is intended to be installed by a trained electrician who is thoroughly familiar with the National Electrical Code and will follow NEC Guidelines as well as local codes.
up when the PTT button is pressed. An externally accessible volume control for the handset earpiece is factory mounted on the back of the case for easy operation. Nominal operating voltages for the desk set intercom include 12VDC, 24VDC, 120VAC, and 240VAC. The desk set intercoms are fully compatible with the Atkinson Dynamics wall mount models. MODEL: Supply Voltage Audio Power Output (Max.) Power Consumption (Max.
speaker mounted on the front panel of the desk set. Depressing the PTT (press-to-talk) button on the handset while speaking into the handset microphone enables the user to broadcast to all other intercoms in the system. Releasing the PTT button returns the unit to Master mode. Figure 3 illustrates a Master/Slave intercom system. SELECTIVE SWITCHING: “-6” Models are equipped with separate talk and listen lines for selective switching in a Master/Remote intercom system.
C. KIT CONTENTS LIST. Qty. Description 1 Instruction Manual Part Number 2561571B D. MOUNTING. CAUTION The selection of the mounting location for the device, its controls, and the routing of the wiring are to be accomplished under the direction of the facilities and the safety engineer. The desk set console may be placed anywhere on a flat surface within six (6) feet of a power source. It may also be reconfigured to hang on a wall or vertical surface.
F. SERVICE. 1. GENERAL. Federal Signal will service your equipment or provide technical assistance with any problems that cannot be handled locally. Any units returned to Atkinson Dynamics for service, inspection, or repair must be accompanied by a Return Material Authorization. This R.M.A. can be obtained only from the factory by calling (888) 751-1500. At this time a brief explanation of the service requested, or the nature of the malfunction, should be given.
-6- 7.63" 4.31" 8.00" 8.63" 4.
-7- Earth Ground GRN 120/240V Models only 12/24V Models 120/240V Models Operating Principle: 1. When one intercom talks, all of the intercoms will hear. 2. For Remotes B or C to talk to other stations, press the talk/ listen switch and speak into the speaker/microphone. Release talk switch to listen. 3. For Remote A to talk to other stations, press PTT-button on handset and talk into handset microphone. NOTES: 1. Desk Set speaker (microphone is mounted on handset) 2. Desk Set speaker volume control 3.
-8- MASTER A AD-26C AD-27C MASTER B AD-26C-7 AD-27C-7 SLAVE AD-26D AD-27D 120/240V Models only 12/24V Models 120/240V Models 12/24V Models 120/240V Models Operating Principle: 1. Master normally listens to Slave (Slave in hands-free mode). 2. When any Master presses talk button, Slave listens. 3. When there is more than one Slave, Slaves will transmit to Master(s) at the same time. NOTES: 1. Desk Set speaker (microphone is mounted on handset) 2. Desk Set speaker volume control 3.
-9* 1 BLK WHT GRN 5 4 Operating Principle: 1. Master can select (via master switch box) to talk to any one or more remotes. 2. Any remote can initiate a call to Master regardless of selector switch being on or off. Remote must specify its location. Remotes cannot talk to other remotes. 3. To talk into intercom, press talk switch and speak into speaker/ microphone.-Release talk switch to listen. 4.
-10- Power 120V 50/60Hz Master AD-27CT-M22 Slave AD-27-2W3 Power Connections: BLK HOT 120/240V Models WHT Neutral 120/240V Models GRN Earth Ground 120/240V Models only *Having more than one Master is not recommended for this system. NOTES: 1. Desk Set speaker (microphone is mounted on handset) 2. Desk Set speaker volume control 3. Handset earpiece volume control (mounted on back of case) 4. Speaker/Microphone 5. Off/On/Speaker volume control 6. Talk switch 7. Monitor on/off switch 8.
WALL-MOUNTING-CONFIGURATION 6 1 290A3972-06 NOTES: 1. Two mounting slots provided for surface mount installations: slot will accept a #10 screw (supplied by installer) 2561571B REV. B 202 Printed in U.S.A.
