Guardian Telecom SR40 Guide

Ph: 403.258.3100 \ email:[email protected] \ www.guardiantelecom.com
Explosion Proof Speaker, Ringer & Speaker/Ringer
Models SR40 and SR60
Installation & Operation
P004562 Rev. H 180430 4/30/2018 12:24 PM

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 2
Table of Contents
Overview .........................................................................................................................3
Features..........................................................................................................................3
Accessories.....................................................................................................................3
SR40/60 Models and Options..........................................................................................4
Installing the SR40/60 .....................................................................................................5
Wiring and Setting up the SR40/60..................................................................................6
P7240 24V, P7243 230V, P7248 12V and P7250 120V Ringers ..............................6
P7241 24V, P7244 230V, P7249 12V and 7251 120V Ringers with 70V Paging ......7
P7245 SR40 and P7260 SR60 70V Paging Speakers ..............................................8
P7246 SR40 70V Paging Speaker with DC Filter Circuit ..........................................9
P7247 SR40 and P7262 SR60 16 Ohm Paging Speakers......................................10
Maintenance..................................................................................................................10
SR40/60 Replacement Parts .........................................................................................10
SR40 Specifications ......................................................................................................11
SR60 Specifications ......................................................................................................13
Storage .........................................................................................................................14
Cleaning Tips for Guardian Telephones ........................................................................14
APPENDIX A - Hazardous Location Classification ........................................................15
Warranty .......................................................................................................................17
Disclaimer .....................................................................................................................17
Warning.........................................................................................................................17
Service Telephone Number...........................................................................................17
Feedback ......................................................................................................................17
Guardian Product Return...............................................................................................18
Table of Figures
Figure 1 - Overall Dimensions..............................................................4
Figure 2 - Ringer Wiring.......................................................................6
Figure 3 - Ringers with 70V Paging .....................................................7
Figure 4 - Paging Speakers Wiring ......................................................8
Figure 5 - Paging Speaker with DC Filter Circuit ..................................9
Package Contents
One (1) SR40 or SR60 Ringer, Speaker or Speaker Ringer
One (1) Installation & Operation Manual

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 3
Overview
SR40/SR60 Explosion Proof Speaker/Ringer
Guardian Telecom’s rugged, versatile SR40 and SR60 Hazardous Area Speaker/Ringers can be set
up as loud speakers for paging applications, loud ringers to signal incoming phone calls, or both
functions can be combined in one device. Approval for use in hazardous areas makes these
speaker/ringers ideal for use in harsh, industrial environments. SR40’s and SR60’s generate up to
110dB and can be factory set in ringer configuration for 12, 24, 120 or 230 volts AC. The SR40 has
a 40 watt driver and the SR60 has a 60 watt driver.
SR40/60 speakers are designed to provide security against ignition of the surrounding atmosphere.
All parts of the apparatus, which might produce an electrical spark, are completely enclosed. All
passages to the outside are made such that any spark or flame will be cooled to a temperature below
the ignition threshold before reaching the outside atmosphere.
The SR40/60 Models P7240 and P7243 are loud Telephone Ringers while models P7241 and P7244
are ringers with additional 70V paging capability. In order for these products to operate as a
telephone ringer, a ring detect relay is needed to control the AC voltage to the ringer circuit when the
telephone ringing signal is detected. All ringers are capable of producing a sound pressure level of
110 dB, which is adjustable on the circuit board. The Paging function of the speaker is designed to
operate on a 70 Volt audio system and comes factory set to 30 Watts, (15 Watts when combined with
the ringer function). A jumper setting on the circuit board is used to select lower wattage levels.
Models P7247 and P7262 are 16 ohm speakers only, models P7245 and P7260 are 70V speakers
only and model P7246 is a 70V speaker with DC filter circuit to monitor line integrity.
Features
Body and Cap Construction
•
Cast, copper free aluminum
•Powder coated
Compliance
•
Hazardous areas
•
Weatherproof
Sound Pressure Level (SPL)
•
110 dB at one meter
Accessories
•
P7226 Hazardous area ring detect relay
•
P7231 Hazardous area off-hook detect relay

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 4
Figure 1 - Overall Dimensions
SR40/60 Models and Options
•
P7240 SR40, 24V Ringer
•
P7241 SR40, 24V 15 Watt Paging Loudspeaker/Ringer
•
P7243 SR40, 230V Ringer
•
P7244 SR40, 230 V, 15 Watt Paging Loudspeaker/Ringer
•
P7245 SR40, 30 Watt 70V Paging Loudspeaker
•
P7246 SR40, 30 Watt, 70V Paging Loudspeaker with DC Filter Circuit for Monitoring Line Integrity
•
P7247 SR40, 30 Watt, 16 Ohm Paging Loudspeaker
•
P7248 SR40, 12V Ringer
•
P7249 SR40, 12V, 15 Watt Paging Loudspeaker/Ringer
•
P7250 SR40, 120V Ringer
•
P7251 SR40, 120V, 15 Watt Paging Loudspeaker/Ringer
•
P7260 SR60, 60 Watt, 70V Paging Loudspeaker
•
P7262 SR60, 60 Watt, 16 Ohm Paging Loudspeaker

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 5
Installing the SR40/60
•Ensure that the device is suitable for the intended service e.g. telephone
ringer, ringer/paging, paging only. Also check to ensure that the device will
handle the voltages and signals that will be supplied. Switching from 120 to
230 VAC and from 12 to 24 VAC can be accomplished in the field by
changing jumpers on the circuit board. It is not possible to switch between
high and low voltage ranges in the field, the proper voltage range must be
ordered from the factory. Application of incorrect voltage may damage
the device or result in non-performance.
See: SR40/60 Models
and Options
•Declassify the hazardous location or disconnect wiring in a safe area
before proceeding with any installation or electrical wiring.
Caution: Installation or
electrical wiring in a
hazardous location
could result in serious
injury to personnel or
damage to property.
•Ensure that none of the electrical connection circuits are live.
•Install the SR40/60 according to appropriate electrical codes using
approved electrical fittings.
Note: This device must be wired using Division 2 wiring methods as
specified in 501-4(b) of the National Electrical Code NEPA 70, for
installation in the United States.
•Choose a wall location that is free of obstructions and permits space for ½”
NPT conduit runs or other approved wiring methods.
See: Figure 1 - Overall
Dimensions.
•Consider the need to later access the interior of the speaker when selecting
the mounting method.
•Ensure mounting can support 20lbs. (9kg).
•
Use a small diameter rod to remove the end cap.
•
Make any required checks and adjustments before mounting the speaker.
See: Wiring and Setting
up the SR40/60
•Mount with two 3/8” bolts or equivalent
•Run wiring into the body of the device.
•Make wiring connections as instructed on the following pages.
•Ensure that threads and sealing surfaces are clean and undamaged.
•Replace the end cap and tighten firmly ensuring that the faces of the end
cap and the body are in contact.
•Apply power to the system.
•Test the unit by making a call to the telephone to which the ringer is
connected and/or making a paging call.

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 6
Wiring and Setting up the SR40/60
P7240 24V, P7243 230V, P7248 12V and P7250 120V Ringers
•Note: The SR40 ringer requires an externally switched power supply
such as Guardian’s P7226 Ring Detect Relay.
•Confirm that the AC voltage supply matches the voltage requirements for
the SR40 ringer board (12/24 VAC or 120/230 VAC).
See: SR40/60 Models
and Options
•Confirm that the jumpers on the circuit board are set to the correct voltage
as per the part number.
See: Figure 2 - Ringer
Wiring
•Ensure that none of the electrical connection circuits are live.
•Attach the AC wires to the designated points on the circuit board terminals.
•Reduce the ringer volume if desired by adjusting the control on the circuit
board.
Figure 2 - Ringer Wiring

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 7
P7241 24V, P7244 230V, P7249 12V and 7251 120V Ringers
with 70V Paging
•Note: The SR40 ringer requires an externally switched power supply.
If the paging speaker is to be installed in proximity to a telephone that
is to be used for paging, an off hook detect relay or other methods
may be required to prevent acoustic feedback.
•Connect the ringer section of the device as explained above.
•Attach the 70-Volt paging lines to the designated terminals on the circuit
board.
See: Figure 3 - Ringers
with 70V Paging.
•If paging speaker power is to be less than factory set 15 Watts, set the
jumper to the desired power level.
For Ringer detail refer to Figure 2
Figure 3 - Ringers with 70V Paging

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 8
P7245 SR40 and P7260 SR60 70V Paging Speakers
•Note: If the paging speaker is to be installed in proximity to a
telephone that is to be used for paging, an off hook detect relay or
other methods may be required to prevent acoustic feedback.
•Attach the 70-Volt paging lines to the designated terminals on the circuit
board.
•If paging speaker power is to be less than factory set 30 Watts, (SR40) or
60 Watts, (SR60), set the speaker line input to the desired power level.
Figure 4 - Paging Speakers Wiring

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 9
P7246 SR40 70V Paging Speaker with DC Filter Circuit
•Note: If the paging speaker is to be installed in proximity to a
telephone that is to be used for paging, an off hook detect relay or
other methods may be required to prevent acoustic feedback.
•The P7246 Paging Speaker is configured to be part of a system that
monitors the integrity of connecting wiring. It contains circuitry that can be
set with a jumper on the circuit board to either conduct or inhibit DC current.
To be effective circuitry is required at the paging amplifier to impress and
detect a 24 VDC bias voltage on the paging line. The monitoring system
requires that all speakers on the line, except the last one must inhibit DC
current flow; therefore they must all be model P7246.
•Place jumper J2 in the “ON” position (ON-Center terminal) for the End of
Line Unit. All other units on a common line set Jumper J2 in the “OFF”
position (OFF-Center terminal).
See: Figure 5 - Paging
Speaker with DC Filter
Circuit
•Attach the 70-Volt paging lines to the designated terminals on the circuit
board.
•If paging speaker power is to be less than factory set 30 Watts, set the
jumper to the desired power level.
Figure 5 - Paging Speaker with DC Filter Circuit

Guardian Telecom Installation and Operation
Model SR40/SR60
Page 10
P7247 SR40 and P7262 SR60 16 Ohm Paging Speakers
•Note: If the paging speaker is to be installed in proximity to a
telephone that is to be used for paging, an off hook detect relay or
other methods may be required to prevent acoustic feedback.
•Attach the amplifier 16 ohm paging lines to the black and white wires from
the driver.
Maintenance
•Note: Follow these instructions to access the interior of the
Speaker/Ringer to make adjustments.
•Disconnect the voltages supplied to the speaker/ringer before removing the
end cap.
•Use a small diameter rod to remove the end cap.
•
Make any necessary repairs or adjustments.
•Replace the end cap and tighten firmly ensuring that the faces of the end
cap and the body are in contact.
•Apply power to the system.
•Test the unit by making a call to the telephone or system to which the ringer
is connected and/or making a paging call.
•Ensure that equipment and wiring in a hazardous location complies with
regulations and standards applicable to that location.
Note: These devices must be wired using Division 2 wiring methods
as specified in 501-4(b) of the National Electrical Code NEPA 70, for
installation in the United States.
•Inspect periodically for broken or worn parts and correct any abnormal
condition immediately.
SR40/60 Replacement Parts
Part No.
Description
P002868
Deflector
P002869
Cone
P004539
SR40 Driver
P004540
SR60 Driver
Circuit boards - specify product part number and serial number