Connecting a dry set of contacts for each of three tones, any one tone can be activated by
closing the appropriate contact. When contact closures are applied to all tone terminals
simultaneously, HORN tone will override the other two tones. If contact closures are applied
to HORN and any other tone HORN tone will override the other tone. If contact closures are
applied to WAIL and YELP, the WAIL tone will override the YELP tone.
2.
Wiring for Single Tone Activation at Power-Up.
Make sure that AC or 24VDC operating power to the unit is off.
The unit can be operated by switching operating power (AC or 24VDC) ON to the unit if a
permanent short wire jumper is installed between GND and the desired tone terminal of the
four-position connector plug instead of dry contact closure.
Connect a short (1" long) #22 AWG wire between GND and the desired tone terminal of the
four position remote tone activation terminal connector plug supplied with the unit. Plug the
connector into the J4 receptacle (see figure 1) on the printed circuit board. Switching ON the
operating power will now activate the unit.
H. SERVICE.
SAFETY MESSAGE TO MAINTENANCE PERSONNEL
• Read and understand all instructions before performing any maintenance
to this unit.
• To reduce the risk of electrical shock or ignition of hazardous atmospheres, do not perform
maintenance/service on this device when circuits are energized.
• Optimum sound distribution will be reduced if speaker becomes clogged with a foreign
substance. Periodic checks should be performed to ensure foreign substances are not packed
into the speaker.
• 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 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 if exterior of housings used in hazardous
locations are painted.
Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death to you or others.
The Federal 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
Return Material Authorization. This R.M.A. can be obtained from your local Distributor or
Manufacturer’s Representative.
At that time a brief explanation of the service requested, or the nature of the malfunctions,
should be provided.
I. REPLACEMENT PARTS.
Description
Part Number
Board Assy, SST3-MV
K2001177
Connector Plug, 4-position
K140340
Connector Plug, Tone Selector
K140389A-04
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