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V. 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 main-
tenance/service on this device when circuits are energized.
• Optimum sound distribution will be reduced if speaker becomes clogged with a foreignsubstance.
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 are painted.
Failure to follow all safety precautions and instructions may result in property damage, serious
injury, or death to you or others.
Other than cleaning, no regularly scheduled maintenance is required. To ensure unit is operating
properly, it should be tested at regularly scheduled intervals.
In the event tone module replacement, or repair is required, refer to the Safety Message to Mainte-
nance Personnel before proceeding.
The Federal Signal Corporation 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.
VI. REPLACEMENT PARTS.
Description
Part Number
Board Assy, 300 (250VDC)
K2001903B
-4-
Summary of Contents for 300
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