Federal Signal Corporation 50GC Instructions D'installation page 5

dio source and the other pair of white leads to the connector card in the next unit or a
power supervision relay contact and an end of line device.
I. Volume Adjustment.
The volume control is set to maximum at the factory. If the volume level is reduced,
be sure that the alarm signal is loud enough to adequately warn.
After all power is connected and the tone module is installed, the volume of the out-
put sound level can be set by applying power to the unit and adjusting the
volume control, R2. The location of R2 is shown in figure 4. Clockwise rotation of
the control, with a small screwdriver, increases the volume.
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 per-
form 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.
J. Service.
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 ac-
companied by a Return Material Authorization. This R.M.A. can be obtained from
the local Distributor or Manufacturer's Representative.
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
Electrical Products Division
Service Department
2645 Federal Signal Drive
University Park, IL 60466-3195
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