Guardian Technologies Telephone SCR A User Manual

Industrial Communications Worldwide  
Industrial Ringdown/Autodialer Telephone  
SCR-A Series  
Installation & Operation  
7552 - 10th Street N.E. Calgary, Alberta, Canada T2E 8W1  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Table of Contents  
Package Contents ..........................................................................................3  
SCR-A Models and Options ...........................................................................3  
Options Available............................................................................................3  
Overview.........................................................................................................4  
Features .........................................................................................................4  
Installing the SCR-A .......................................................................................7  
Operating the SCR-A......................................................................................7  
Field Repairs & Adjustments ..........................................................................8  
Engineering Specifications .............................................................................9  
Replacement Parts.......................................................................................10  
Government Certification..............................................................................11  
Warranty.......................................................................................................12  
Disclaimer.....................................................................................................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 4 - Installation SCR-41-A.....................................................................6  
Package Contents  
(1) SCR-A Telephone  
(1) Installation & Operation Manual  
SCR-A Models and Options  
Part No.  
Model  
Description  
P6056  
SCR-11-A Heavy Duty Curly Cord  
P6058  
SCR-41-A Armored Handset Cord & Handset Retainer Clip  
Options Available  
20’ Heavy Duty Curly Cord  
(20C) (Not available with SCR-41-A)  
Noise Canceling Microphone (NC)  
Page 3  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
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. 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 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  
Page 4  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
MAGNETIC REED HOOK SWITCH  
MAGNETIC REED HOOK SWITCH  
16 GA STEEL - ZINC DICHROMATE  
PLATED AND POWDER COATED  
16 GA STEEL - ZINC DICHROMATE  
PLATED AND POWDER COATED  
HIGH IMPACT ABS HANDSET  
HEARING AID COMPATIBLE EARPIECE  
HIGH IMPACT ABS HANDSET  
HEARING AID COMPATIBLE EARPIECE  
WIRING ACCESS  
WIRING ACCESS  
HEAVY DUTY HANDSET CORD  
ARMORED HANDSET CORD  
SCR-11-A  
SCR-41-A  
Figure 1 - Features  
5.2" [132mm]  
2.2" [56mm]  
5.0" [127mm]  
2.7" [69mm]  
Figure 2 - Overall Dimensions & Mounting  
Page 5  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
GASKET  
FUSE  
FACEPLATE  
TIP  
RING  
GROUND  
HARNESS  
SURGE ARRESTOR  
GROUND  
TERMINAL STRIP  
BEL-Ringer  
BR-3-39  
2799 #45  
MADE IN USA BY  
FLOYD BELL INC.  
COLUMBUS, OH  
Figure 3 - Installation SCR-11-A  
FACEPLATE  
HARNESS  
TIP  
RING  
GROUND  
B
FUSE  
SURGE ARRESTOR  
GASKET  
GROUND  
TERMINAL STRIP  
B
BEL-Ringer  
BR-3-39  
2799 #45  
MADE IN USA BY  
FLOYD BELL INC.  
COLUMBUS, OH  
~
Figure 4 - Installation SCR-41-A  
Page 6  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Installing the SCR-A  
SCR-A telephones shall be installed by qualified service personnel.  
Follow all appropriate electrical codes and use only approved electrical  
fittings for the installation.  
See:Figure 2 - Overall  
Dimensions & Mounting.  
Choose a wall location that is free of obstructions and permits space for ½”  
NPT conduit runs.  
Ensure mounting can support 4 lbs. (1.8 kg) and any additional foreseeable  
load.  
Remove the eight (8) cover screws from the front of the unit and carefully  
remove the front cover assembly. NOTE that the handset and all  
electronics are attached to the front plate. The front cover may be  
separated from the back box by disconnecting the harness plugs.  
Attach the back box to the wall at the desired location using 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 entrance hole at the  
bottom of the unit.  
See: Figure 3 -  
Connect an approved earth ground to the terminal block.  
Installation SCR-11-A &  
Figure 4 - Installation  
SCR-41-A.  
Bring cable into the enclosure through the cable entrance and attach  
individual wires from the exchange – Tip/Ring/Ground – to the surge  
arrestor (Tip & Ring are not polarity sensitive).  
WARNING  
Protective earthing terminal of the phone shall be properly hardwired  
to a protective earth system.  
Apply power to the system.  
Test the unit by calling to and from another unit on the exchange.  
Operating the SCR-A  
The SCR-A Ringdown/Autodialer phone is designed for automatic calling  
simply by removing the handset from the cradle.  
WARNING  
Due to magnetic fields, it is possible that dangerous objects may get trapped  
within the earcap region of this device.  
Page 7  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Field Repairs & Adjustments  
Field repairs may only be carried out by qualified technicians using OEM parts.  
Substitution of parts voids warranty and may pose a hazard to users of the  
equipment.  
See: Replacement Parts  
Disconnect the telephone from Tip and Ring power supplied by the PABX  
or central office before attempting repairs.  
See: Figure 3 -  
Installation SCR-11-A  
Carefully remove the front cover assembly and separate from the housing  
by disconnecting the harness plugs. NOTE that the handset and all  
electronics are attached to the front plate.  
Perform the necessary repairs or adjustments.  
Note: Ensure that  
connections are secure  
before replacing  
faceplate.  
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 deforms the gasket and  
reduces the weather resistance of the set.  
Fuse Replacement  
Remove the old fuse by pushing in the end cap of the fuse holder and  
turning counterclockwise to open. Insert a new 0.25 amp, 250Volt, 3AG  
fast blow fuse and close the fuse holder.  
WARNING!  
Replace only with a 0.25 amp 250V 3AG fast blow fuse. Failure to do so  
will void the warranty.  
If, on reconnecting power, the fuse fails, check the telephone system  
wiring. The fuse protects the Tip and Ring line from the telephone system.  
It is usually powered at 48 volts DC and must not be connected to 120 volts  
AC.  
Page 8  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Engineering Specifications  
ELECTRICAL PERFORMANCE  
AUDIBLE RANGE FREQUENCY RESPONSE  
SEND LOUDNESS RATING (SLR) dB  
RECEIVE LOUDNESS RATING (RLR) dB  
SIDE TONE MASKING RATING (STMR)  
RINGER OUTPUT  
300 – 3400 HZ  
SHORT 8 dB +/- 4 dB  
SHORT -4 dB +/- 4 dB  
>11 dB  
75 dB MAX  
RINGER EQUIVALENCE  
SET IMPEDANCE  
0.5  
600 OHMS NOMINAL  
MAXIMUM LOOP  
15,000 FEET (4,600 METERS) OF 22 AWG COPPER  
ELECTRICAL REQUIREMENTS  
RINGER SENSITIVITY  
40 – 100 V, 16 – 25 HZ  
24 – 56 VDC  
LINE VOLTAGE  
LOOP CURRENT  
20 - 120 MA  
CONNECTION METHOD  
ENVIRONMENTAL  
SURGE ARRESTOR / TERMINAL BLOCK  
WEATHERPROOF  
ENCLOSURE NEMA 3R  
-40O TO +50O C  
TEMPERATURE  
MECHANICAL  
HOOK SWITCH (CRADLE SWITCH) LIFE  
BODY CONSTRUCTION  
>1 000 000 OPERATIONS  
16 GAUGE STEEL, ZINC DICHROMATE PLATED AND  
POWDER COATED  
DIMENSIONS  
9 X 5 X 5.2 INCHES (229 X 127 X 132 MM)  
4 LBS (1.82 KG)  
NET WEIGHT  
HANDSET MATERIAL  
MICROPHONE  
HIGH IMPACT ABS  
NOISE REDUCING ELECTRET  
NOISE CANCELING DYNAMIC  
HEARING AID COMPATIBLE  
VERTICAL WALL  
OPTIONAL MICROPHONE  
RECEIVER  
STANDARD MOUNTING  
CONNECTION FITTINGS  
7/8” DIAM. OPENING FOR OWNER SUPPLIED FITTING  
STAINLESS STEEL  
HARDWARE MATERIAL  
COMPLIANCES  
ACA  
N14510  
INDUSTRY CANADA  
FCC  
1012 6721 A  
HQHCAN-22517-TE-E  
Page 9  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Replacement Parts  
Description  
Part No.  
P004026  
P006263  
P003022  
P002294  
P002554  
P002786  
P004371  
P000028  
P004538  
P002080  
P006307  
P004259  
P006281  
P002782  
P005917  
P002992  
P002991  
P002840  
P004152  
P002787  
Faceplate SCR-11-A  
Faceplate SCR-41-A  
Handset Shell C/W 22” Armored Cord  
Handset Shell Only  
Cord – Handset 6’  
Handset Cradle  
Handset Retainer – SCR-41-A Only  
Microphone Cartridge – Noise Reducing  
Microphone Cartridge – Noise Canceling  
Receiver Cartridge  
Handset Assembly – C/W 6’ Curly Cord For SCR-11-A  
Handset Assembly – C/W 22” Armored Cord For SCR-41-A  
Telephone Circuit Board  
Ringer - Floyd Bell BR-3-39  
Reed Switch  
Surge Arrestor – TII 126L1  
Fuse - Glass 0.25 Amp 250V  
Housing SCR-11-A  
Housing SCR-41-A  
Gasket – Faceplate  
Page 10  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Government Certification  
Attached to the telephone is a label for the Australian Communications Authority. This identifies  
equipment certifications indicating the SCR-A series telephones meet certain telecommunications  
network protective, operational and safety requirements. This agency does not guarantee the  
equipment will operate to the user's satisfaction.  
Before installing this telephone equipment, users should ensure it is permissible to connect the  
equipment to facilities of the local telecommunications company.  
Equipment must be installed using acceptable connection methods. In some cases, the telephone  
users inside wiring, associated with a single line service, may be extended by a certified connector  
assembly (telephone extension cord). The customer should be aware that in some situations  
compliance with the above conditions may not prevent degradation of service.  
Repairs to certified equipment should be made by a supplier designated authorized maintenance  
facility.  
For their own protection users should ensure the electrical ground connections of the power utility,  
telephone lines and internal metallic water pipe systems, if present, are connected. This precaution  
may be particularly important in rural areas.  
CAUTION: Users should not attempt to make ground connections, but should contact the appropriate  
electrical inspection authority or electrician.  
Notification to Telephone Company  
Upon request, the customer must notify the telephone company of the particular line to which the  
connection will be 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 telephone’s performance.  
ACA Rules and Ringer Equivalence Number  
This equipment complies with the regulation AS/ACIF S002:2001 Australian Standard Analogue  
internetworking and non-interference requirements for customer equipment for connection to public  
switched telephone networks. On the side of this equipment is a label that contains, among other  
information, the ACA registration number and ringer equivalence number (REN) for this equipment. If  
requested, this information must be provided to the telephone company.  
The REN is used to determine the quantity of devices which may be connected to the telephone line.  
Excessive RENs on the telephone line may result in the devices not ringing in response to an incoming  
call. In most, but not all areas, the sum of the RENs should not exceed three. To be certain of the  
number of devices that may be connected to the line, as determined by the total RENs, contact the  
telephone company to determine the maximum REN for the calling area.  
Service changes and Limitations  
The telephone company may make changes in its facilities, equipment, operations, or procedures that  
could affect the operation of the equipment. If this happens, the telephone company will provide  
advance notice in order for you to make the necessary modifications in order to maintain uninterrupted  
service.  
This equipment can not be used on public coin telephone service as provided by your telephone  
company. Connection to party line service is subject to state tariffs (contact the state public utility  
commission, public service commission or corporate commission for information.)  
Page 11  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Warranty  
Guardian Telecom warrants your product to be free of defects in material and workmanship for a period  
of one year. Guardian Telecom will repair or replace any defective unit that is under warranty  
This warranty is null and void if any non-authorized modifications have been made to this product, or if  
it has been subjected to misuse, neglect, or accident. This warranty covers bench repairs only; such  
repairs must be made at Guardian Telecom or an authorized service depot. Guardian Telecom is not  
responsible for costs incurred for on-site service calls, freight, or brokerage.  
A return authorization must be obtained prior to warranty claims or repairs.  
Disclaimer  
The products covered by this manual are designed for use in Industrial Environments and/or Hazardous  
Locations. Due to the range of possible applications for these instruments the manufacturer will not be  
responsible for damages or losses of any kind suffered as a result of the use of this product, including  
consequential damages.  
Warning  
This device may be opened and reassembled by qualified personnel only, for the purposes of installing  
the product, making adjustments and replacing components, following the 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 customer service telephone number which is toll-free within North  
America. The Authorized Dealer/Service Depot is listed below for your area. If you need assistance  
when installing or operating this product, please call the toll-free telephone number or the Authorized  
Service Depot between regular business hours (8:00AM-5:00PM). If you are calling outside regular  
business hours, please leave a detailed message, and a member of Guardian Telecom’s Service  
Department will return your call as soon as possible. If your product requires service, Guardian  
personnel will supply you with an RMA (return materials authorization) number over the telephone or  
through our web site product return page at http://www.guardiantelecom.com. This number must be  
included with your return address and the name of the person to contact.  
Qmax Group Pty Ltd  
21 Jubaea Crt  
Canning Vale  
Western Australia 6155  
Phone (08) 9455-4671  
Fax (08) 6210-1749  
(Click to open message box)  
Feedback  
Guardian Telecom continually strives to make reliable, durable, and easy to use products. If you, as an  
installer or user of our equipment, have any suggestions for improvements to this or any of our products  
or documents, including this manual, we would appreciate hearing from you.  
Page 12  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Guardian Product Return  
Guardian products have been quality tested and are in full working order when shipped from  
the factory, given the rugged nature of these products, shipping is not expected to damage a  
unit. In the unlikely event of a malfunction, Guardian follows the three step procedure below.  
Step I - On-Site Correction  
The most common source of difficulties with a new product is improper installation in one of  
two ways: incorrect wiring connections or connection to an incorrect power source.  
Product wiring needs to be properly connected to the on-site wiring. Correct wiring  
instructions are shown in the user manual included with the product.  
Connecting a telephone to a standard power source, rather than tip & ring, will blow the  
telephone’s internal, user-replaceable fuse. In the event of fuse burn-out, disconnect the  
telephone from the power source, replace the fuse, and reconnect following the wiring  
diagrams provided with the product.  
Step II - Return Materials Authorization (RMA)  
When a product has been installed following user manual instructions, and the unit fails to  
operate, the user must contact Guardian Telecom to obtain authorization to return the  
product. This can be done by completing a RMA form online at  
manual.  
After providing information on the product, the owner and the nature of the problem,  
Guardian will issue a RMA number, to be shown on documentation returned with the  
product.  
In addition to the RMA number, shipping documents should include name, address and  
telephone number of the owner along with contact information for the person responsible  
for the repair and/or the user who identified the malfunction.  
(Where a product is being returned for repair from outside of Canada, customs  
documentation must show the product’s serial number, date of export [date of purchase],  
and a notation that the equipment is: “Canadian goods returning.”)  
Step III - Factory Authorized Service  
Once received, each product is carefully inspected and tested. If the product is under  
warranty, repairs are completed and the product returned to the owner, generally within  
five working days of receipt by the factory.  
A product that has been subjected to misuse, neglect or accident or is beyond the warranty  
period will be evaluated. The service department will provide the owner’s representative  
with a repair cost estimate. Once approved, repairs are completed and the product  
returned, generally within five working days.  
Page 13  
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Guardian Telecom Inc.  
Installation and Operation  
SCR-A Series  
Notes:  
Model No.  
Part No.  
Serial No.  
Date of Purchase  
Page 14  
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Guardian Telecom Inc.  
7552 - 10th Street N.E.  
Calgary, Alberta, Canada T2E 8W1  
Toll-free 1-800-363-8010  
Ph. (403) 258-3100  
Fax. (403) 253-4967  
E-mail: mailto:[email protected]  
(Click to open message box)  
Industrial Communications Worldwide  
© Guardian Telecom Inc. 2005  
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