Federal Signal Corporation SELECTFONE SF-1011P User manual

Address all communications and shipments to:
FEDERAL SIGNAL CORPORATION
Industrial Systems
Service Department
2645 Federal Signal Drive
University Park, IL 60484-3167
MODEL SELECTFONE®
INSTRUCTIONS FOR FEDERAL
SELECTFONE
2561603B
REV. B 210
Printed in U.S.A.

blank page

INSTRUCTION SHEET FOR FEDERAL SELECTFONE®
INTERCOM/PAGING SYSTEM
I. GENERAL
The SelectFone®intercom and paging systems are designed for voice communication for indus-
trial environments where the communication equipment is installed in high-noise areas, corrosive
atmospheres, hazardous areas, and extremes of temperature, dust, and humidity. The intercom
system allows the operator to both page instructions over the 15-Watt, 8-Ohm speakers and have
two-way conversations between two or more people on a telephone party line. With a five-channel
intercom system multiple communication links can be established simultaneously without cross
talk or interference.
Ease of installation, simplified operation, simplified maintenance, unrestricted expansion, and
unshielded cable are some of the benefits of the Federal Signal SelectFone intercom system.
Typical installations include power plants, metal processing plants, mining operations, petroleum
and chemical plants, paper mills, water treatment facilities, and manufacturing, packaging, and
processing plants.
A typical SelectFone intercom station features an impact resistant, Cycolac® handset with noise
canceling dynamic transmitter, and a receiver with a built-in push-to-page switch for one-hand
operation. The front panel of each unit features a handset cradle equipped with a contact-less sensor
to indicate an off-hook condition, an ‘off-hook’ indicator LED, and channel selector switch (on
five-channel stations). In wall mount units, the 12-Watt paging amplifier, handset preamplifier,
and power supply are enclosed in the housing. Desktop and panel mount units are equipped with
the cables and connectors required to connect to the Remote Subset (within 10 feet), containing
the paging amplifier, power supply, and handset amplifier. The amplifier and power supply as-
semblies features a plug-in design for ease of installation and service. Each unit is equipped with
a terminal block for simplified installation.
II. SPECIFICATIONS
COMMON SPECIFICATIONS FOR ALL MODELS
Power Requirements
Operating voltage 105-130 VAC 50/60 Hz, 21 to 28 VDC (Nom. 24 VDC)
Standby Power Consumed 10 VA 120 VAC, 3 watts 24VDC
Operating Power Consumed 33 VA 120 VAC, 28 watts 24VDC max
Handset Amplifier
Output 1.5VRMS max. into 33 ohm load
Voltage Gain 68dB adjustable
Frequency Response 250-6500 Hz +/- 1.5 dB
Distortion 2% THD max at 1000 Hz
Controls Microphone Gain, Receiver Volume
Speaker Amplifier
Output 12 Watts into 8 or 16 ohm load
Voltage Gain 31dB adjustable
Frequency Response 250-12000 Hz
Distortion Less than 2% THD at 12 watt, 1000 Hz
Input Impedance 50k ohm
Output Impedance 8 ohm or 16 ohm
Controls Speaker Volume Adjustable
-1-

Handset
Microphone 10 ohm dynamic noise canceling
Receiver 170 +/- 30 ohm high efficiency dynamic
Coil Cord 6 conductor, 10-ft extended
Agency Approvals
UL, cUL Models SF-1011DT, SF-1015DT, SF-1011P &
SF-1015P are listed for Class I, Div. 2 Grps. A, B, C &
D. Models SF-1231X, SF-1235X,
SF-1241X & SF-1245X are Listed for use in Class I,
Div. 2; Class II Div 2 Groups F and G, and Class III
Hazardous Locations
BASIC MODEL SPECIFICATIONS
III. INSTALLATION
SAFETY MESSAGE TO INSTALLERS
It is important to follow all instructions shipped with this product. This device is to be installed by a
trained electrician who is thoroughly familiar with the National Electrical Code and will follow the
NEC Guidelines as well as local codes.
The selection of the mounting location for the device, its controls, and the routing of the wiring is to be
accomplished under the direction of the facilities engineer and the safety engineer. In addition, listed
below are some other important safety instructions and precautions you should follow:
• Readandunderstandallinstructionsbeforeinstallingoroperatingthisequipment.
• Disconnectpowerbeforeconnectingordoinganymaintenanceonthisintercom.
• Alleffectivepagingspeakersproduceloudsoundswhichmaycause,incertainsituations,perma-
nent hearing loss. You should take appropriate precautions such as wearing hearing protection.
• Afterinstallation,ensurethatallsetscrewsareproperlytightened.
• Afterinstallation,testtheintercomtoensurethatitisoperatingproperly.
• Aftertestingiscomplete,provideacopyofthisinstructionsheettoalloperatingpersonnel.
• Establishaproceduretoroutinelycheckthelightinstallationforintegrityandproperoperation.
Failure to follow all safety precautions and instructions may result in property damage, serious
injury, or death to you or others.
Model Model Model Model Model Model Model Model
SF-1011P SF-1015P SF-1011DT SF-1015DT SF-1231X SF-1235X SF-1241X SF-1245X
Description 1 channel 5 channel 1 channel 5 channel 1 channel 5 channel 1 channel 5 channel
panel panel desktop desktop wall wall wall wall
mount mount mount mount mount mount
indoor indoor outdoor outdoor
Dimensions 9.5 x 7.86 9.5 x 7.86 9.5 x 7.86 9.5 x 7.86 N/A N/A N/A N/A
subset x 4 x 4 x 4 x 4
HxWxD in.
Dimensions 3.75 x 6.5 3.75 x 6.5 9.25 x 4.0 9.25 x 4.0 9.5 x 7.86 9.5 x 7.86 16.0 x 13.06 16.0 x 13.06
intercom x 6.0 x 6.0 x 9.0 x 9.0 x 7.7 x 7.7 x 8.5 x 8.5
HxWxD in.
Weight 16 lbs. 16 lbs. 16 lbs. 16 lbs. 10 lbs. 10 lbs. 19.0 lbs. 19.2 lbs.
-2-

-3-
A.Unpacking
After unpacking the unit, examine it for damage that may have occurred in transit. If the equip-
ment has been damaged, do not attempt to install or operate it, file a claim immediately with
the carrier stating the extent of the damage. Carefully check all envelopes, shipping labels and
tags before removing or destroying them.
B. Installation Of Subset, Wall Station and Indoor/Outdoor Station Enclosure
(See Figure 1, 2)
The remote subset unit for panel mount and desktop stations, the wall mount, and the indoor/
outdoor wall mount SelectFone stations use the same enclosure to house motherboard, plug-in
speaker amplifier, power supply etc. Only the front enclosure covers are different. The enclosures
are designed to be mounted on a flat surface with user-supplied hardware. As the locations of
SelectFone stations vary with each installation, these enclosures are not provided with conduit or
cable openings. To install the SelectFone station enclosure, proceed as follows:
When the wall station is to be used in wet locations which require the use of the indoor/outdoor
station enclosure which is rated Type 4X, Type 12, Type 13 and IP66, an equivalently rated cable
gland or conduit hub must be used when connecting to the indoor/outdoor station enclosure.
1. Plan all the wiring and cable routing with the following guidelines in mind. While the distance
between stations is not critical, the total power cable length should not exceed 5280 feet (1
mile) for 120VAC systems. The SelectFone system cable can be installed in cable trays or
conduit. The maximum outside diameter of the five channel system cable is 0.65” (16.51
mm) and that of a single channel system is 0.43" (11 mm). Select the proper conduit size and
make no more than two bends for each length as the excessive force required to pull the cable
through may damage the insulation.
2. Determine the mounting location. The suggested mounting height for a wall station enclosure
is 54" (137 cm) up to the center line of the enclosure. Ensure that the mounting surface is
flat.
3. Remove the cover of the remote subset or wall mount SelectFone intercom station by remov-
ing four screws. Loosen the two screws and unplug the ribbon cable connector at CN1. This
cable makes the connection between the handset amplifier board and the motherboard. Set
the cover and screws aside.
4. The stations are shipped with the motherboard, power supply, and speaker amplifier installed
as shown in the Figure 1. The best location for conduit or cable holes is the left half of the top
or bottom wall or the left wall of the enclosure 1-3/4” from the bottom. Do not use the right
half of the top wall and right wall to avoid interference with the power supply and speaker
amplifier. Loosen the two screws that anchor the power supply to the standoffs on the bottom
of the enclosure, unplug, and lift out. Similarly remove the speaker amplifier. Loosen the four
screws at the four corners that anchor the motherboard to the standoffs mounted on the bottom
of the enclosure and remove. Save all the hardware to reassemble the unit. Drill or punch the
necessary conduit or cable openings in the empty enclosure.
5. Place the rear of the housing against the mounting surface. Using the four mounting holes
located in each corner of the enclosure as a template, scribe mounting hole locations on the
mounting surface.
EQUIPMENT DAMAGE HAZARD
To avoid damage when drilling, ensure that both sides of the mounting surface are clear of any
parts or wires. Drill the holes only through the desired surface.

6. Drill four holes at the scribed mounting hole locations. Remove all burs and sharp edges.
Secure the housing to the surface with user-supplied hardware.
7. Attach the conduit to the enclosure. Feed the wiring through the conduit and bring it into the
enclosure.
8. Re-install and secure the motherboard to the bottom of the enclosure with the four screws
removed in step 4. Wire the unit as described in Section E.
9. After completing the wiring, reinstall the speaker amplifier and power supply modules into
the receptacles mounted on the motherboard and secure with the screws removed in step 4.
Plug-in the handset amplifier connector cable at CN1 and secure with the two screws. Re-
install the enclosure cover and secure with the four screws removed in step 3.
C. Panel Mount SelectFone Station Installation
The panel or flush mount intercom station consists of a panel mount handset unit and a remotely
mounted subset unit. The subset unit consists of a handset amplifier, speaker amplifier, and power
supply in an enclosure.
The panel mount handset assembly incorporates a black, impact resistant, Cycolac®handset with
noise canceling dynamic microphone, black cradle with proximity sensor hook switch, and a
channel selector switch. It has a push-to-page switch located in the handset handle, an “off hook”
indicator LED, and a 10 ft cable with 25-pin D subminiature connector. To install the panel mount
unit follow the steps described below:
1. Install the subset enclosure within 10 ft of the panel or flush-mount unit as described in Sec-
tion A and make electrical connections as described in the Section E.
2. Locate the handset assembly approximately 54" from the floor in an area where the wires and
cable are free from interference. Ensure that the back of the panel is closed.
3. Using the template (see Figure 3) provided with the panel-mount handset assembly, make a
rectangular cutout in the panel. Drill four holes in the panel to mount the handset assembly.
4. Pass the 25-pin D-subminiature connector through the cutout in the panel and anchor the
handset assembly to the panel with user-supplied hardware.
5. Plug the 25-pin D-subminiature connector at the end of the cable to the 25-pin receptacle of the
remotely mounted subset unit and fasten it with the two screws provided on the connector.
D. Desktop Station Installation
The SelectFone desktop station is similar in construction to the panel mount station. This station
consists of a desk top handset assembly and a remote subset unit. The subset unit consists of
the motherboard, the power supply module, the speaker amplifier, and the handset pre-amplifier
board housed in an enclosure. The remote subset cover has a 25-pin D-subminiature receptacle
to receive the connector from the desktop assembly.
The desktop unit incorporates an impact resistant, Cycolac® handset with noise-canceling
dynamic microphone and a channel selector switch. It has a push-to-page switch located in the
handset handle, an “off hook” indicator LED, a page receive speaker with volume control, and
10-foot cable with 25-pin D-subminiature connector. To install the desktop unit, follow the steps
described below:
1. Install the remote subset enclosure within 10 ft of the desktop handset unit as described in
Section A and make electrical connections as described in the Section E. The suggested loca-
tion for a remote subset with desktop unit is the knee-well of the desk.
2. Plug the 25-pin D-subminiature connector to the 25 pin receptacle of the remote subset and
fasten it with the two screws provided.
3. Test the station for proper operation.
-4-

E. Electrical Connections (see Fig. 1, 4, 5)
SHOCK HAZARD
To avoid electrical shock, do not connect wires when power is applied.
The enclosure has a motherboard that provides designated screw terminal blocks for easy and
trouble free connections of system cable. It allows sufficient space for the system cable to be
looped in and out. The wires should be properly dressed and terminated inside the enclosure. The
SelectFone stations are electrically paralleled. This allows system expansion by simply extending
the system cable from the nearest SelectFone station.
Wire the station carefully by following the wire colors and using the spade lugs as shown in Figure
4. Perform all electrical wiring per the National Electrical Code.
a. 120 VAC Power Connection
All AC power wiring to the SelectFone station is made at the three-position terminal block
JP1 mounted on the motherboard. Connect the black (HOT) 14 AWG conductor of the in-
coming and outgoing cable to H terminal. Connect white (NEUTRAL) 14 AWG conductor
to the terminal marked N. Connect the green/yellow (earth ground) 14 AWG conductor to
the terminal marked GND.
A green 14 AWG ground conductor should be part of the system cable where no conduit or
non-metallic conduit is used. If a non-metallic enclosure is used with metallic conduit and
cable without ground conductor, there absolutely must be an electrical bond between conduit
and terminal marked GND at terminal block JP1 of the SelectFone station.
EQUIPMENT DAMAGE HAZARD
No SelectFone station should be installed or operated without having proper
ground continuity.
b. 24VDC Power Connection for 24VDC SelectFone
The 24VDC SelectFone system stations are designed for operation from a 24VDC,
rechargeable battery. A charger can be connected to maintain the batteries. Ground the
negative side of battery only at one point for the system to reduce the hum and noise in the
24VDC SelectFone system.
EQUIPMENT DAMAGE HAZARD
Do not operate 24VDC SelectFone system stations from a charger without a 24V battery
connected to it because high, no load voltage (30V to 40V) of a 24V charger can damage
the equipment. Never connect 24VDC SelectFone station to a supply
voltage greater than 28VDC.
All SelectFone system stations are connected in parallel. 24VDC stations draw 1.5Amp. Max.
current when page amplifier is driven by sine wave signal producing 12 watts in to an 8-ohm
speaker. When planning 24VDC SelectFone system layout, careful consideration should
be given to the power cable losses due to the voltage drop caused by cable resistance. To
reduce the voltage drop in the long cable length it is recommended that several branches from
24VDC-power source be used to power the system and no more then six (6) stations should
be connected to each power cable branch. An adequately rated fuse or a circuit breaker at
the 24VDC source should be used to protect each power cable branch. For a 14 AWG power
line this fuse or circuit breaker should be rated at 15 A. The rating of the protection device is
-5-

based on size of the power cable. Consult the National Electrical Code (NFPA 70) or Canadian
Standards Association (CSA 22.1) for maximum allowable capacity of cable size used.
Note that cable distance between stations as well as total cable length must be considered.
Table in this section will provide guideline for cable distance (length) and number of 24VDC
stations connected to it in parallel. This table is based on speech signal driving station speaker/
amplifier to produce full 12-watt output into an 8-ohm speaker. It is also assumed that stations
are spaced at equal distance from one another along the cable length. A speech signal has
less energy content then continuous sine wave signal so the average current draw per station
is less then sine signal.
MAXIMUM CABLE DISTANCE PER POWERLINE BRANCH
14AWG CABLE 12 AWG CABLE 10 AWG CABLE 8 AWG CABLE
Nu m b e r To T a l be T w e e N To T a l be T w e e N To T a l be T w e e N To T a l be T w e e N
o f ST a T i o N S ST a T i o N S ST a T i o N S ST a T i o N S
ST a T i o N
1 4000ft 4000ft 6400ft 6400ft 10000ft 10000ft 16000ft 16000ft
2 2800ft 1400ft 4480ft 2240ft 7000ft 3500ft 11200ft 5600ft
3 2000ft 660ft 3200ft 1060ft 5000ft 1667ft 8000ft 2667ft
6 1200ft 200ft 1920ft 320ft 3000ft 500ft 4800ft 800ft
9 800ft 90ft 1280ft 142ft 2000ft 220ft 3200ft 356ft
The 24 VDC power connections are made at the 3-position terminal block JP1 mounted on
the motherboard in the station enclosure. Connect the black positive (+) 14 AWG conductor
of incoming and out going power cable to the + terminal of JP1. Connect white, negative
(–) 14 AWG conductor of incoming and out going power cable to the – terminal of JP1.
Connect the green/yellow the earth ground 14 AWG conductor to the GND terminal of the
JP1 terminal block.
c. Page Line and Party Line Connection.
SHOCK HAZARD
To avoid electrical shock, do not connect wires when power is applied.
All the channel line and page line connections are made at the L1 and L2 terminal blocks
mounted on the motherboard. The incoming and outgoing cable of multi-channel systems
have six, differently colored, 18 AWG, twisted pair conductors. One conductor of each twisted
pair is of solid color and the other has a stripe of the same color.
1. As shown in Figure 1, the page line connections are made to the L1 and L2 terminal blocks,
at the terminals marked L1 PAGE L2. Connect 18 AWG RED conductor of twisted pair
RED, WHITE/RED of the incoming and outgoing cable to L1 and conductor WHITE/
RED to L2 at location marked PAGE on the motherboard.
2. To make party line 1 connection, connect GREEN conductor of incoming and outgoing
cable’s 18 AWG twisted pair GREEN ,WHITE/ GREEN to L1 and W H I T E /
GREEN conductor to L2 terminal at location identified as PARTY 1 between terminal
blocks L1 and L2.
3. For party line 2 connection, connect BROWN conductor of twisted pair BROWN, WHITE/
BROWN to L1 and WHITE/BROWN conductor to L2 terminal at PARTY 2. For party
line 3, connect ORANGE conductor of ORANGE, WHITE/ORANGE twisted pair to L1
and WHITE/ORANGE to L2 at PARTY 3. For party line 4, connect VIOLET conductor
-6-

of twisted pair VIOLET, WHITE/VIOLET to L1 and WHITE/VIOLET to L2 at location
PARTY 4 and for party line 5, connect conductor GRAY to L1 and WHITE/GRAY to
L2 terminals at PARTY 5 location.
d. Paging Speaker Connection
As output to the speaker from the speaker amplifier of the SelectFone station is less then 11
volts RMS, the speaker wires falls into CLASS II of the NEC code and, hence, conduit is not
required except for mechanical protection. To minimize power loss in the speaker cable, the
length of the speaker cable should be as short as possible. The table in this section shows the
wire size and corresponding maximum length of speaker cable allowed to maintain a cable
power loss under 20% (1db).
As shown in the Figure 1, the connection to the 8 ohm or 16 ohm paging speaker is made
at the terminal block marked JP2. Using 18 AWG twisted pair cable connect –VE terminal
of the speaker to the terminal marked Cat the terminal block JP2 and connect +VE of the
speaker terminal to the terminal marked 8for 8-ohm impedance speaker or to the terminal
marked 16 for 16-ohm impedance speaker.
It is recommended that when the Push-to-Page switch is pressed, the paging speaker connected
to that station is silenced (muted) to prevent acoustic feedback to the handset microphone.
This is why there is a jumper placed between terminals marked IN and OUT of the terminal
block marked JP2. This does not prevent the speaker connected to the muted station from
announcing the paging messages originated at other stations while channel line conversations
are being carried out at the muted station.
Removing the jumper between IN and OUT terminals will disable the mute feature.
Wire Size 8 OHM output 16 OHM Output
#18 AWG 75 FEET(25 M) 150 FEET (50 M)
#16 AWG 120 FEET (35 M) 240 FEET (75 M)
#14 AWG 200 FEET (60 M) 400 FEET (120 M)
e. Line Balance Assembly Connection
One line balance assembly Model SF-1000LB must be installed with each SelectFone sys-
tem. It should be located at the electrical center of the system. The line balance assembly
properly loads the page line and all channel line circuits. Locate the line balance assembly
unit within 12 inches of the SelectFone station located at the electrical center of the intercom
system. See Fig. 6.
1. Remove the cover by loosening the four screws.
2. Place the rear of the housing against the mounting surface. Using the four mounting holes
located in each corner of the enclosure as a template, scribe mounting hole locations on
the mounting surface.
EQUIPMENT DAMAGE HAZARD
To avoid damage when drilling, ensure that both sides of the mounting surface are clear of
any parts or wires. Drill the holes only through the desired surface.
3 The line balance assembly is supplied without conduit or cable entry holes. Drill or
punch the necessary conduit or cable openings in the enclosure before mounting it to the
surface. Remove all the metal shavings and debris from the enclosure.
4. Drill four holes at the scribed mounting hole locations. Remove all burs and sharp edges.
Secure the housing to the surface with the user-supplied hardware.
-7-

5. Attach the conduit to the enclosure. Feed the wiring through the conduit, and bring it into
the enclosure.
6 Connect an 18 AWG twisted pair wire between SelectFone station L1 PAGE L2 and Line
Balance L1 PAGE-L2 terminals. Similarly connect the 18 AWG twisted pair wire for
each channel line between terminals of LINE-BALANCE assembly and corresponding
SelectFone station terminals as shown in Figures 1, 4, 5, and 6.
IV. ADJUSTMENTS AND OPERATION.
After all of the stations, the line balance assembly, and paging speakers have been installed and the
wiring is complete, the system should be evaluated and adjustments made to ensure proper operation.
Before beginning, verify that all station handsets are on hook.
Turn on AC power to the system and begin the evaluation at the SelectFone station closest to the line
balance assembly. Lift the handset off hook; the off-hook indicator should turn on. Press the push-to-
page switch on the handset and speak firmly and directly into the handset microphone, verifying that
the message is audible over all speakers except those associated with that station. When paging, if the
line balance assembly is connected properly and the page line is loaded properly, very little or no mes-
sage should be heard on the handset receiver. If necessary, open the cover of the line balance assembly
and adjust the page line loading by turning the control to the point where little or no page is audible
in the handset receiver. In the future, if 10 or more units are added to the system, this adjustment may
again be necessary.
After line balance adjustments are completed for the page line, the paging speaker volume level can
be adjusted on the associated speaker/amplifier module. To access the speaker/amplifier volume level
control, remove the station cover. The station is pre-set at the factory to produce 1/2 the maximum
output level with moderate page line input.
Check the operation of all channels by holding a conversation between two or more SelectFone stations
on each channel. If the line balance assembly is properly connected, the speaker should hear little or
none of his own voice in the handset receiver. No channel line load adjustment is provided.
The handset transmitter signal is amplified by the handset/amplifier. The handset amplifier has a
transmitter volume control and receiver level control. To access these controls remove the front cover
of the station. These controls are located on the printed circuit board mounted to the back of the front
cover and can be adjusted with a small screwdriver. These controls are pre-set at the factory to produce
optimum results in the industrial environment. Before attempting to adjust these controls, check for
a missing or improperly connected line balance assembly, crossed wires, or grounded wires. Stations
located far (3000 feet or more) from the line balance assembly may require that the receiver level control
be adjusted to compensate for cable resistance.
V. TROUBLESHOOTING
In an SelectFone system, AC power circuit conductors are in the same cable with communication con-
ductors. Even if the system is properly installed, there is an AC voltage between page line or channel
line conductors and ground. This is a result of the induced voltage that is due to the capacitance of the
AC power circuit conductors running in parallel with the communication circuit conductors. At times
this voltage can read 50 volts or more. This voltage is of no consequence because the page and channel
lines are balanced twisted pair audio circuits.
In an SelectFone system, the audio voltage across page line conductors or across any channel line con-
ductors (L1 and L2) is of the order of 0.5 to 0.75 volts peak when someone is speaking into the handset
microphone. The voltage will be proportional to the person’s voice speaking into the handset.
Hum or Buzz
When one of the two conductors in the page or channel lines short circuits to ground, the audio cir-
cuit becomes unbalanced. If there is leakage to ground from one of the conductors, the audio circuit
becomes unbalanced.
-8-

When audio lines are balanced twisted pair, the induced noise voltage is the same on both conductors
and, therefore, cancels out before it is amplified. But when the circuit becomes unbalanced, the induced
noise voltage is not the same on both conductors and is, therefore, amplified and causes an audible hum
or buzz. To solve the problem, locate the source of the ground by checking each conductor and moving
from one junction point to the next and disconnecting the effected circuit. Improperly grounded circuits
are often the result of poor terminations such that small strands protrude and touch adjacent terminals.
In many instances, the presence of water or moisture and deposits in a junction box form a conductive
solution that causes a ground fault or leakage to ground.
Low Level Audio At All Stations
This problem can occur when there is a dead short across any channel or page line. The system will
still function but the audio level will be the lowest at the stations closest to the short. Locate the short
by checking with an ohmmeter at the junction boxes and disconnecting the effected sections.
Cross Talk
Channel and page lines are twisted pair wires and balanced such that when circuits are accidentally
crossed during installation interference between two lines will occur. Cross talk can also occur when
there is leakage or a ground fault on two of the channel lines or when there is a missing or open line
balance resistor. The resistance between the channel line circuits should be very high or infinite.
Inoperative Station
In a properly operating system an inoperative station indicates miswiring or a problem with the sta-
tion itself. Check the wiring connection. If the problem is not caused by miswiring, swap the plug-in
modules of the effected station with one that is operating properly to identify the defective module.
VI. MAINTENANCE.
SAFETY MESSAGE TO MAINTENANCE PERSONNEL
Listed below are some important safety instructions and precautions you should follow:
• Readandunderstandallinstructionsbeforeinstallingoroperatingthissystem.
• AnymaintenancetotheSelectFonestationmustbedonewithpowerturnedoff.
• AnymaintenancetotheunitmustbeperformedbyatrainedelectricianinaccordancewithNEC
Guidelines and local codes.
• Neveraltertheunitinanymanner.Safetyinhazardouslocationsmaybeendangeredifadditional
openings or other alterations are made in units specifically designed for use in these locations.
• Thenameplate,whichmaycontaincautionaryorotherinformationofimportancetomaintenance
personnel, should NOT be obscured in any way. Ensure that the nameplate remains readable when
the housing’s exterior is painted.
Failure to follow all safety precautions and instructions may result in property damage, serious
injury, or death.
Other than cleaning, no regularly scheduled maintenance is required. To ensure unit is operating
properly, it should be tested at regularly scheduled intervals.
VII. SERVICE
The Federal Signal factory will service your equipment or provide technical assistance with any
problems that cannot be handled locally.
Any units returned to Federal Signal for service, inspection, or repair must be accompanied by a Re-
turn Material Authorization. The R.M.A. can be obtained from the local Manufacturer’s Representa-
tive or by calling the factory.
-9-

At this time a brief explanation of the service requested, or the nature of the malfunction, should be
provided.
Address all communications and shipments to:
FEDERAL SIGNAL CORPORATION
Industial Systems
Service Department
2645 Federal Signal Drive
University Park, IL 60484--3167
VIII. SERVICE PARTS.
Description Part Number
Power Supply Module K2001883
Power Supply Module 24VDC K2001883-01
Speaker/Amplifier Module K2001882
Speaker/Amplifier Module 24VDC K2001897
Handset Pre-amp PCBA K2001881
Handset Receiver Element K8592034
Main PCBA K2001884
Dynamic Microphone K137147
Main PCBA 24VDC K2001884-01
Receiver Cap, Black K8592036
Microphone Cap, Black K8592037
Page Push Button, Black K8592038
Cradle, Black K8592029
Handset Assembly, Black, Desktop K8592082
Handset Assembly, Black K8592033
-10-

-11-
KEY
A. Motherboard
B. Power Supply Module
C. Amplifier Module
D. Enclosure Mounting Holes
PAGEL1 L2
L1 PARTY1 L2
L1 PARTY2 L2
L1 PARTY3 L2
L1 PARTY4 L2
L1 PARTY5 L2
HANDSET C816 IN OUT ISO
SPKR MUTE
G
N
D
NH
A.C.
SLO-BLO
1/2 A
CN1
PREAMP JP2
CN3
L2L1
JP1
CN2
8.68"
5.00"
B
C
D
A
290A4034-01
SELECTFONE ENCLOSURE WITH COVER
REMOVED (FIG. 1)
1

2
-12-
KEY
A. Enclosure Mounting Holes
SELECTFONE INDOOR/OUTDOOR STATION
MODEL SF-1245X & SF-1241X (FIG. 2)
6.5" ±.2
1.8"
14.6" ±.2"
12.6" ±.2"
10.00"
14.94"
290A4034-02
A

-13-
3
PANEL CUT-OUT TEMPLATE FOR
SF-1015P & SF-1011P (FIG. 3)
5.50"
3.25"
0.25"
0.25"
290A4034-03
B
A
KEY
A. Mounting Holes
B. Cut-Out

-14-
4
WHITE BLACK WHITE/RED RED GREEN WHITE/GREEN BROWN
WHITE/BROWN ORANGE WHITE/ORANGE VIOLET WHITE/VIOLET GRAY WHITE/GRAY GREEN BLUE MUTING OR SPARE
GROUND OR SPARE
PA RT Y LINE 5
PA RT Y LINE 4
PA RT Y LINE 3 PA RT Y LINE 2
PA RT Y LINE 1
PAGE LINE
120VAC
VIOLET
WHITE/GRAY
BLUE
GREEN
GRAY
WHITE/VIOLET
WHITE/ORANGE
ORANGE
WHITE/BROWN
BROWN
WHITE/GREEN
GREEN
WHITE/RED
RED
BLACK
WHITE
VIOLET
WHITE/GRAY
BLUE
GREEN
GRAY
WHITE/VIOLET
WHITE/ORANGE
ORANGE
WHITE/BROWN
BROWN
WHITE/GREEN
GREEN
WHITE/RED
RED
BLACK
WHITE
L2 L1 HOT NEUTRAL L2 L1 L2 L1 L2 L1 L2 L1 L2 L1
L2 L1 HOT NEUTRAL L2 L1 L2 L1 L2 L1 L2 L1 L2 L1
WHITE
BLACK
RED
GREEN
BROWN
ORANGE
VIOLET
GRAY
WHITE/GRAY
WHITE/VIOLET
WHITE/ORANGE
WHITE/BROWN
WHITE/GREEN
WHITE/RED
PAGEL1 L2
L1 PA RT Y1 L2
L1 PA RT Y2 L2 L1 PA RT Y3 L2 L1 PA RT Y4 L2
L1 PA RT Y5 L2
CABLE 2
SPEAKER
8 OHM
BLACK
RED
MUTE
NH
AC
BLACK
WHITE/VIOLET
WHITE/ORANGE
WHITE/BROWN
WHITE/GREEN
GRAY
BLACK
WHITE
RED
GREEN
BROWN
ORANGE
VIOLET
PA RT Y5L1 L2
PA RT Y1
PA RT Y2
PA RT Y4
PA RT Y3
L1 L1 L1 L1 L1
L2 L2 L2
PAGE
L2 L2
WHITE/GRAY
WHITE/RED
AC
NH
CABLE 2
RED
SPEAKER
16 OHM
MUTE
OUTDOOR WA LL MOUNT
HANDSET/SPEAKER STATION
INDOOR PANEL AND DESKTOP
HANDSET/SPEAKER SUB-STATION
16 CONDUCTOR , 120VAC PA IR #14AWG TWISTED, PAGE & PA RITY
LINE PA IRS #18AWG TWISTED, ONE SINGLE CONDUCTOR #14AWG & ONE SINGLE CONDUCTOR #18AWG, .630" O.D.
A. EARTH GROUND. B. TO MUTE BETWEEN ANY NUMBER OF STATIONS, CONNECT
THE APPLICABLE STATION(S) MUTE TERMINALS TOGETHER.
WIRE LEGEND NOTES
CABLE 1-
ONE PA IR #18AWG TWISTED, .300" O.D.CABLE 2-
CABLE 1
WHITE
16
PA RT Y3
PA RT Y4
PA RT Y2
PA RT Y1
PA RT Y5L1
GREEN
RED
BLACK
VIOLET
ORANGE
BROWN
GRAY
L1 L1 L1 L1 L1
PAGE
L2
WHITE/BROWN
WHITE/GRAY
WHITE/ORANGE
WHITE/VIOLET
WHITE/RED
WHITE/GREEN
RED
BLACK
L2 L2 L2 L2 L2
C8
INDOOR WA LL MOUNT
HANDSET/SPEAKER STAT ION
NH
G
N D
G N D
AC
CABLE 2
SPEAKER
16 OHM
I
N
I
S
O
O U
T
16C8
I
N
I
S
O
O U
T
G N D
16C8
I
N
I
S
O
O U
T
MUTE
RED
GRAY
ORANGE
BROWN
VIOLET
GREEN
WHITE/ORANGE
WHITE/GRAY
WHITE/VIOLET
WHITE/GREEN
WHITE/BROWN
WHITE/RED
L1 L2 L1 L2 L1 L2 L1 L2 L1 L2 L1 L2
LINE 5
LINE 1
LINE 4
LINE 3
LINE 2
PAGE
LINE BALANCE ASSEMBLY
B B B
A A A
290A4034-04

5
WHITE BLACK WHITE/RED RED GREEN WHITE/GREEN GREEN BLUE MUTING OR SPARE
GROUND OR SPARE
PA RT Y LINE 1
PAGE LINE
120VAC
BLUE
GREEN
WHITE/GREEN
GREEN
WHITE/RED
RED
BLACK
WHITE
BLUE
GREEN
WHITE/GREEN
GREEN
WHITE/RED
RED
BLACK
WHITE
L2 L1 HOT NEUTRAL L2 L1
L2 L1 HOT NEUTRAL L2 L1
WHITE
BLACK
RED
GREEN
WHITE/GREEN
WHITE/RED
PAGEL1 L2
L1 PA RT Y1 L2
L1 PA RT Y2 L2 L1 PA RT Y3 L2 L1 PA RT Y4 L2
L1 PA RT Y5 L2
CABLE 2
SPEAKER
8 OHM
BLACK
RED
MUTE
NH
AC
BLACK
WHITE/GREEN
BLACK
WHITE
RED
GREEN
PA RT Y5L1 L2
PA RT Y1
PA RT Y2
PA RT Y4
PA RT Y3
L1 L1 L1 L1 L1
L2 L2 L2
PAGE
L2 L2
WHITE/RED
AC
NH
CABLE 2
RED
SPEAKER
16 OHM
MUTE
OUTDOOR WA LL MOUNT
HANDSET/SPEAKER STATION
INDOOR PANEL AND DESKTOP
HANDSET/SPEAKER SUB-STATION
8 CONDUCTOR , 120VAC PA IR #14AWG TWISTED, PAGE & PA RITY
LINE PA IRS #18AWG TWISTED, ONE SINGLE CONDUCTOR #14AWG & ONE SINGLE CONDUCTOR #18AWG, .430" O.D.
A. EARTH GROUND. B. TO MUTE BETWEEN ANY NUMBER OF STATIONS, CONNECT
THE APPLICABLE STATION(S) MUTE TERMINALS TOGETHER.
WIRE LEGEND NOTES
CABLE 1-
ONE PA IR #18AWG TWISTED, .300" O.D.CABLE 2-
CABLE 1
WHITE
16
PA RT Y3
PA RT Y4
PA RT Y2
PA RT Y1
PA RT Y5L1
GREEN
RED
BLACK
L1 L1 L1 L1 L1
PAGE
L2
WHITE/RED
WHITE/GREEN
RED
BLACK
L2 L2 L2 L2 L2
C8
INDOOR WA LL MOUNT
HANDSET/SPEAKER STAT ION
NH
G N D
G N D
AC
CABLE 2
SPEAKER
16 OHM
I
N
I
S
O
O U
T
16C8
I
N
I
S
O
O U
T
G N D
16C8
I
N
I
S
O
O U
T
MUTE
RED
GREEN
WHITE/GREEN
WHITE/RED
L1 L2 L1 L2 L1 L2 L1 L2 L1 L2 L1 L2
LINE 5
LINE 1
LINE 4
LINE 3
LINE 2
PAGE
LINE BALANCE ASSEMBLY
B B B
A A A
290A4034-05
-15-

-16-
6
WHITE BLACK WHITE/RED RED GREEN WHITE/GREEN BROWN
WHITE/BROWN ORANGE WHITE/ORANGE VIOLET WHITE/VIOLET GREY WHITE/GREY GREEN BLUE MUTING OR SPARE
GROUND OR SPARE
PA RT Y LINE 5
PA RT Y LINE 4
PA RT Y LINE 3 PA RT Y LINE 2
PA RT Y LINE 1
PA GE LINE
VIOLET
WHITE/GREY
BLUE
GREEN
GREY
WHITE/VIOLET
WHITE/ORANGE
ORANGE
WHITE/BROWN
BROWN
WHITE/GREEN
GREEN
WHITE/RED
RED
BLACK
WHITE
L2 L1 L2 L1 L2 L1 L2 L1 L2 L1 L2 L1
WHITE
BLACK
RED
GREEN
BROWN
ORANGE
VIOLET
GREY
WHITE/GREY
WHITE/VIOLET
WHITE/ORANGE
WHITE/BROWN
WHITE/GREEN
WHITE/RED
PA GEL1 L2
L1 PA RT Y1 L2
L1 PA RT Y2 L2 L1 PA RT Y3 L2 L1 PA RT Y4 L2 L1 PA RT Y5 L2
CABLE 2
SPEAKER
8 OHM
BLACK
RED
C816
I
S
O
U
T
O
I
N
MUTE
2
N
D
1
G
BLACK
WHITE/VIOLET
WHITE/ORANGE
WHITE/BROWN
WHITE/GREEN
GREY
1
BLACK
WHITE
RED
GREEN
BROWN
ORANGE
VIOLET
PA RT Y5L1 L2
PA RT Y1
PA RT Y2
PA RT Y4
PA RT Y3
L1 L1 L1 L1 L1
L2 L2 L2
PA GE
L2 L2
WHITE/GREY
WHITE/RED
G
D
N
CABLE 2
RED
16 OHM
SPEAKER
O
MUTE
U
C8
I
16 N
2
S
OT
I
OUTDOOR WA LL MOUNT
HANDSET/SPEAKER STATION
INDOOR PANEL AND DESKTOP
HANDSET/SPEAKER SUB-STATION
16 CONDUCTOR , 24VDC PA IR #14AWG TWISTED, PAGE & PA RITY
LINE PA IRS #18AWG TWISTED, ONE SINGLE CONDUCTOR #14AWG & ONE SINGLE CONDUCTOR #18AWG, .630%%" O.D.
2. TO MUTE BETWEEN ANY NUMBER OF STATIONS, CONNECT THE APPLICABLE STATION(S) MUTE TERMINALS TOGETHER. 1. EARTH GROUND.
WIRE LEGEND
NOTES
CABLE 1-
ONE PA IR #18AWG TWISTED, .300" O.D.CABLE 2-
CABLE 1
WHITE
L1 L2 L1 L2 L2 L1 L2 L2 L1 L2 L1 L1 - +
1
RED
WHITE/RED
GREEN
WHITE/GREEN
BROWN
WHITE/BROWN
ORANGE
WHITE/ORANGE
WHITE/VIOLET
GREY
GREEN
BLUE
WHITE/GREY
VIOLET
16
WHITE
BLACK
PA RT Y3
PA RT Y4
PA RT Y2
PA RT Y1
PA RT Y5L1
GREEN
RED
BLACK
VIOLET
ORANGE
BROWN
GREY
L1 L1 L1 L1 L1
PA GE
L2
WHITE/BROWN
WHITE/GREY
WHITE/ORANGE
WHITE/VIOLET
WHITE/RED
WHITE/GREEN
RED
BLACK
L2 L2 L2 L2 L2
C8
INDOOR WA LL MOUNT
HANDSET/SPEAKER STATION
D
G
N
16 OHM
CABLE 2
SPEAKER
NTO
I
IO
US
MUTE
2
RED
GREY
ORANGE
BROWN
VIOLET
GREEN
WHITE/ORANGE
WHITE/GREY
WHITE/VIOLET
WHITE/GREEN
WHITE/BROWN
WHITE/RED
L1 L2 L1 L2 L1 L2 L1 L2 L1 L2 L1 L2
LINE 5
LINE 4
LINE 3
LINE 2
LINE 1
PAGE
LINE BALANCE ASSEMBLY
SEE NOTES
3 AND 4
GND
-+
24VDC
SOURCE
+-
24VDC24VDC
-+-+
24VDC
24VDC +
-
4. LOCATE 24VDC SOURCE AS CLOSE TO CENTER OF SYSTEM AS POSSIBLE. 3. 24VDC SOURCE TO BE ISOLATED FROM GROUND OR GROUNDED ON THE NEGATIVE SIDE.
24VDC
290A4034-06

-17-
7
290A4034-07
WHITE BLACK WHITE/RED RED GREEN WHITE/GREEN GREEN BLUE MUTING OR SPARE
GROUND OR SPARE
PA RT Y LINE 1
PA GE LINE
24VDC
BLUE
GREEN
WHITE/GREEN
GREEN
WHITE/RED
RED
BLACK
WHITE
L2 L1 + - L2 L1
WHITE
BLACK
RED
GREEN
WHITE/GREEN
WHITE/RED
PA GEL1 L2
L1 PA RT Y1 L2
L1 PA RT Y2 L2 L1 PA RT Y3 L2 L1 PA RT Y4 L2 L1 PA RT Y5 L2
CABLE 2
SPEAKER
8 OHM
BLACK
RED
C816
I
S
O
U
T
O
I
N
MUTE
2
N
D
1
G
BLACK
WHITE/GREEN
1
BLACK
WHITE
RED
GREEN
PA RT Y5L1 L2
PA RT Y1
PA RT Y2
PA RT Y4
PA RT Y3
L1 L1 L1 L1 L1
L2 L2 L2
PA GE
L2 L2
WHITE/RED
G
D
N
CABLE 2
RED
16 OHM
SPEAKER
O
MUTE
U
C8
I
16 N
2
S
OT
I
OUTDOOR WALL MOUNT
HANDSET/SPEAKER STATION
INDOOR PANEL AND DESKTOP
HANDSET/SPEAKER SUB-STATION
8 CONDUCTOR , 24VDC PA IR #14AWG TWISTED, PAGE & PA RITY
LINE PA IRS #18AWG TWISTED, ONE SINGLE CONDUCTOR #14AWG & ONE SINGLE CONDUCTOR #18AWG, .430%%" O.D.
2. TO MUTE BETWEEN ANY NUMBER OF STATIONS, CONNECT
THE APPLICABLE STATION(S) MUTE TERMINALS TOGETHER.
1. EARTH GROUND.
WIRE LEGEND
NOTES
CABLE 1-
ONE PA IR #18AWG TWISTED, .300" O.D.CABLE 2-
CABLE 1
WHITE
L2 L2 L1 L1 - +
1
RED
WHITE/RED
GREEN
WHITE/GREEN
GREEN
BLUE
16
WHITE
BLACK
PA RT Y3
PA RTY4
PA RT Y2
PA RT Y1
PA RT Y5L1
GREEN
RED
BLACK
L1 L1 L1 L1 L1
PA GE
L2
WHITE/RED
WHITE/GREEN
RED
BLACK
L2 L2 L2 L2 L2
C8
INDOOR WA LL MOUNT
HANDSET/SPEAKER STAT ION
D-+
G
N
24VDC
16 OHM
CABLE 2
SPEAKER
NTO
I
IO
US
MUTE
2
RED
GREEN
WHITE/GREEN
WHITE/RED
L1 L2 L1 L2 L1 L2 L1 L2 L1 L2 L1 L2
LINE 5
LINE 4
LINE 3
LINE 2
LINE 1
PAGE
LINE BALANCE ASSEMBLY
-+
GND
SEE NOTES
3 AND 4
24VDC
SOURCE
+-
24VDC
+-
24VDC
3. 24VDC SOURCE TO BE ISOLATED FROM GROUND OR GROUNDED ON THE NEGATIVE SIDE. 4. LOCATE 24VDC SOURCE AS CLOSE TO CENTER OF SYSTEM AS POSSIBLE.
24VDC

8
LINE BALANCE ASSEMBLY
MODEL SF-1000LB (FIG. 6)
KEY
A. Mounting Holes
B. Page Line Balance Adjustment
L1
PARTY 5
L2
PARTY 4
L1 L2
PARTY 3
L1 L2
PARTY 2
L1 L2
PARTY 1
L1 L2
PAGE
L1 L2
A
B290A4034-08