Industrial Communications Worldwide
Industrial Ringdown/Autodialer Telephone
SCR-A Series
Installation & Operation
Ph: 403.258.3100 \ email:info@guardiantelecom.com \ www.guardiantelecom.com
7552 - 10th Street N.E. Calgary, Alberta, Canada T2E 8W1
Guardian Telecom Inc.
Installation and Operation
SCR-A Series
SCR-11 A SCR-41 A
P006302 Rev. A 3/13/2007 8:06 AM
Page 2
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
P6058
SCR-11-A Heavy Duty Curly Cord
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)
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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. H
humidity
S, SO2, and NH3), and high
2
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
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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
HIGH IMPACT ABS HANDSET
HEARING AID COMPATIBLE EARPIECE
WIRING ACCESS
16 GA STEEL - ZINC DICHROMATE
PLATED AND POWDER COATED
HIGH IMPACT ABS HANDSET
HEARING AID COMPATIBLE EARPIECE
WIRING ACCESS
HEAVY DUTY HANDSET CORD
ARMORED HANDSET CORD
SCR-11-A SCR-41-A
Figure 1 - Features
5.2" [132mm] 5.0" [127mm]
2.7" [69mm]
2.2" [56mm]
Guardian
Telecom Inc.
Calgary, Alberta, Canada T2H 0W3
www.guardiantelecom.com
7000 Fisher Road S.E
Fax: (403) 2533-4967
Tel: (403) 258-3100
6.4" [163mm]
SN: H7XXXXX
1012 6721 A
Industry Canada
Industrie Canada
9.0" [229mm]
Figure 2 - Overall Dimensions & Mounting
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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
B
HARNESS
TIP
RING
GROUND
FUSE
SURGE ARRESTOR
GASKET
GROUND
TERMINAL STRIP
BEL-Ringer
BR-3-39
2799 #45
MADE IN USA BY
FLOYD BELL INC.
COLUMBUS, OH
B
~
Figure 4 - Installation SCR-41-A
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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.
• 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.
• Connect an approved earth ground to the terminal block.
• 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
See:Figure 2 - Overall
Dimensions & Mounting.
See: Figure 3 Installation SCR-11-A &
Figure 4 - Installation
SCR-41-A.
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.
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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.
• 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.
• 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.
See: Figure 3 Installation SCR-11-A
Note: Ensure that
connections are secure
before replacing
faceplate.
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Guardian Telecom Inc.
Installation and Operation
SCR-A Series
Engineering Specifications
ELECTRICAL PERFORMANCE
AUDIBLE RANGE FREQUENCY RESPONSE 300 – 3400 HZ
SEND LOUDNESS RATING (SLR) dB SHORT 8 dB +/- 4 dB
RECEIVE LOUDNESS RATING (RLR) dB SHORT -4 dB +/- 4 dB
SIDE TONE MASKING RATING (STMR) >11 dB
RINGER OUTPUT 75 dB MAX
RINGER EQUIVALENCE 0.5
SET IMPEDANCE 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
LINE VOLTAGE 24 – 56 VDC
LOOP CURRENT 20 - 120 MA
CONNECTION METHOD SURGE ARRESTOR / TERMINAL BLOCK
ENVIRONMENTAL
WEATHERPROOF ENCLOSURE NEMA 3R
TEMPERATURE -40
MECHANICAL
O
TO +50
O
C
HOOK SWITCH (CRADLE SWITCH) LIFE >1 000 000 OPERATIONS
BODY CONSTRUCTION 16 GAUGE STEEL, ZINC DICHROMATE PLATED AND
POWDER COATED
DIMENSIONS 9 X 5 X 5.2 INCHES (229 X 127 X 132 MM)
NET WEIGHT 4 LBS (1.82 KG)
HANDSET MATERIAL HIGH IMPACT ABS
MICROPHONE NOISE REDUCING ELECTRET
OPTIONAL MICROPHONE NOISE CANCELING DYNAMIC
RECEIVER HEARING AID COMPATIBLE
STANDARD MOUNTING VERTICAL WALL
CONNECTION FITTINGS 7/8” DIAM. OPENING FOR OWNER SUPPLIED FITTING
HARDWARE MATERIAL STAINLESS STEEL
COMPLIANCES
ACA N14510
INDUSTRY CANADA 1012 6721 A
FCC HQHCAN-22517-TE-E
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Guardian Telecom Inc.
Installation and Operation
SCR-A Series
Replacement Parts
Part No. Description
P004026 Faceplate SCR-11-A
P006263 Faceplate SCR-41-A
P003022 Handset Shell C/W 22” Armored Cord
P002294 Handset Shell Only
P002554 Cord – Handset 6’
P002786 Handset Cradle
P004371 Handset 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
P004259 Handset Assembly – C/W 22” Armored Cord For SCR-41-A
P006281 Telephone Circuit Board
P002782 Ringer - Floyd Bell BR-3-39
P005917 Reed Switch
P002992 Surge Arrestor – TII 126L1
P002991 Fuse - Glass 0.25 Amp 250V
P002840 Housing SCR-11-A
P004152 Housing SCR-41-A
P002787 Gasket – Faceplate
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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.)
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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
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
Email : info@qmax.net.au
(Click to open message box)
. This number must be
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
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 sour ce.
• Product wiring needs to be properly connected to the on-site wiring. Correct wi ring
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
www.guardiantelecom.com, or by calling the service telephone number given in this
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
Guardian Telecom Inc.
Installation and Operation
SCR-A Series
Notes:
Model No.
Part No.
Serial No.
Date of Purchase
Page 14
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
www.guardiantelecom.com
E-mail: mailto:sales@guardiantelecom.com
(Click to open message box)
Industrial Communications Worldwide
© Guardian Telecom Inc. 2005
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