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Installation Instructions 

3M

 Model 478DA (D-15) Intercom System  

78-9236-3421-2 

Table of Contents

 

A. Package Contents

 

1

 

 

 

B. Introduction

 

1

 

 

 

C. Mounting Methods

 

2

 

 

 

D. Connection to Optional System Components

 

2

 

 

 

1 Speaker/Detection Cable

 

2

 

2. Outside Speaker/Mic

 

2

 

3. Split Speaker and Mic

 

3

 

4. Flex Microphone

 

3

 

5. Monitor Speaker

 

3

 

6, Footswitch

 

3

 

7 Additional Presence Alert

 

3

 

8 Multiple Master System

 

3

 

9. Music/Message Playback System

 

3

 

10. Handset

 

3

 

11. Vehicle Detection

 

3

 

 

 

E. System Checkout and Balancing

 

4

 

 

 

F Service Information

 

4

 

 

 

G. Internal Switch Diagram

 

4

 

Intercom Mounting Methods

 

5

 

Connection Diagrams

 

6-9

 

 

3M 

Food Services Trade Department

 

3M Center BIdg. 551-1 E-02  

St. Paul, MN 55144-1000                                                                     ©3M 1999 January             78-8050-8476-7 Rev. J 

Содержание 478DA (D-15)

Страница 1: ...t Speaker and Mic 3 4 Flex Microphone 3 5 Monitor Speaker 3 6 Footswitch 3 7 Additional Presence Alert 3 8 Multiple Master System 3 9 Music Message Playback System 3 10 Handset 3 11 Vehicle Detection 3 E System Checkout and Balancing 4 F Service Information 4 G Internal Switch Diagram 4 Intercom Mounting Methods 5 Connection Diagrams 6 9 3M Food Services Trade Department 3M Center BIdg 551 1 E 02 ...

Страница 2: ...ement but we suggest permanent surface attachment to prevent movement Use the enclosed mounting guides and A bracket to mount the D 15 to a wall microphone stand flange mount junction box or optional pedestal mount 78 8028 9095 0 as shown in figure 2 Use of the pedestal mount positions the unit closer to the operator for better voice clarity and lower listen volume Install the A bracket as follows...

Страница 3: ...noisy situations Set SW102 SW103 to the EXTERNAL MIC position see figure 1 and connect the microphone to the FLEX MIC and SHIELD inputs see figure 3 5 MONITOR SPEAKER An 8 ohm speaker may be connected to the monitor outputs to monitor the incoming conversation Use twisted pair wire to connect this monitor speaker to the MONITOR HI or MONITOR LO and COMMON outputs see figure 3 MONITOR LO is the sam...

Страница 4: ...WITH AN AIRSWITCH OR OTHER PULSE SYSTEM 3 The presence alert tone is heard over the internal speaker 7 Adjust the ALERT VOLUME control on the bottom of the unit for the desired level 8 Press the TALK switch and confirm that the tone is canceled NOTE D 15 does not self cancel 9 If using a multiple master system press and hold the TALK switch of one unit The red and green lights of the other units s...

Страница 5: ...Figure 2 Intercom Mounting Methods ...

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