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Guardian Telecom Inc. 

 

 

 

Installation and Operation 

SCR-A Series 

 

Page 4 

 

 

 

Overview 

SCR-A Industrial Ringdown/Autodialer Telephone 

The SCR-A is a rugged industrial telephone designed to provide safe, reliable, point to point 
communication in harsh environments such as refineries, mills, plants, warehouses or areas with 
high humidity. 
 

 
 
 

Features 

Enclosure 

  16 AWG steel, zinc dichromate plated and powder coated 

Epoxy Resin Coating 

  Encapsulates all parts on main circuit board 

  Resistant to corrosive agents (eg. H

2

S, SO

2

, and NH

3

), and high 

humidity 

Magnetic Reed Hook Switch 

  No moving parts 

Surge Arrestor 

  Protects the user in the event of a high voltage spike on the telephone 

line 

Fuse 

  Prevents damage to the electronic circuits in the event of a high 

voltage spike on the telephone line 

Noise Reducing Microphone

 

  Allows a high level of intelligibility in locations with high background 

noise.  

 

Heavy Duty Handset Cord (SCR-11-A)

 

 Withstands 

abusive 

use

 

Armored Handset Cord (SCR-41-A)

 

 Vandal 

resistant

 

Hearing-Aid Compatibility

  

  Compatible with inductively coupled hearing-aid devices 

 
 

Summary of Contents for SCR-11A

Page 1: ...E Calgary Alberta Canada T2E 8W1 Ph 403 258 3100 email info guardiantelecom com www guardiantelecom com Industrial Communications Worldwide Industrial Ringdown Autodialer Telephone SCR A Series Insta...

Page 2: ...Guardian Telecom Inc Installation and Operation SCR A Series Page 2 SCR 11 A SCR 41 A P006302 Rev A 3 13 2007 8 06 AM...

Page 3: ...mer 12 Warning 12 Service Telephone Number 12 Feedback 12 Guardian Product Return 13 Table of Figures Figure 1 Features 5 Figure 2 Overall Dimensions Mounting 5 Figure 3 Installation SCR 11 A 6 Figure...

Page 4: ...all parts on main circuit board Resistant to corrosive agents eg H2S SO2 and NH3 and high humidity Magnetic Reed Hook Switch No moving parts Surge Arrestor Protects the user in the event of a high vol...

Page 5: ...l 403 258 3100 Fax 403 2533 4967 7000 Fisher Road S E Guardian Telecom Inc 2 2 56mm 5 2 132mm 5 0 127mm HEAVY DUTY HANDSET CORD WIRING ACCESS MAGNETIC REED HOOK SWITCH HIGH IMPACT ABS HANDSET HEARING...

Page 6: ...n SCR 41 A 2799 45 BR 3 39 BEL Ringer FLOYD BELL INC COLUMBUS OH MADE IN USA BY SURGE ARRESTOR TERMINAL STRIP FUSE HARNESS FACEPLATE GASKET GROUND GROUND RING TIP B B GASKET FUSE HARNESS BEL Ringer CO...

Page 7: ...g four 4 8 screws If weather resistance is important in your application select washers that will assist in sealing the mounting holes Install a suitable conduit hub or cable gland in the cable entran...

Page 8: ...stments Carefully replace the front plate and install all eight screws Do not over tighten the cover screws there is a flexible gasket between the cover and the body Excessive tightening of the screws...

Page 9: ...VDC LOOP CURRENT 20 120 MA CONNECTION METHOD SURGE ARRESTOR TERMINAL BLOCK ENVIRONMENTAL WEATHERPROOF ENCLOSURE NEMA 3R TEMPERATURE 40O TO 50O C MECHANICAL HOOK SWITCH CRADLE SWITCH LIFE 1 000 000 OPE...

Page 10: ...andset Retainer SCR 41 A Only P000028 Microphone Cartridge Noise Reducing P004538 Microphone Cartridge Noise Canceling P002080 Receiver Cartridge P006307 Handset Assembly C W 6 Curly Cord For SCR 11 A...

Page 11: ...e made and provide the Australian Communications Authority registration number The local telephone company may request disconnection of the telephone where alterations or malfunctions affect the telep...

Page 12: ...instructions in the product manual High voltages may be present in this product when connected to telephone wiring Service Telephone Number 1 800 363 8010 North America Guardian Telecom provides a cu...

Page 13: ...rdian Telecom to obtain authorization to return the product This can be done by completing a RMA form online at www guardiantelecom com or by calling the service telephone number given in this manual...

Page 14: ...Guardian Telecom Inc Installation and Operation SCR A Series Page 14 Notes Model No Part No Serial No Date of Purchase...

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Page 17: ...Calgary Alberta Canada T2E 8W1 Toll free 1 800 363 8010 Ph 403 258 3100 Fax 403 253 4967 www guardiantelecom com E mail mailto sales guardiantelecom com Click to open message box Industrial Communica...

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