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INSTALLATION AND SERVICE INSTRUCTIONS FOR MODEL 41X
EXPLOSION-PROOF HORN FOR USE IN HAZARDOUS LOCATIONS
SAFETY MESSAGE TO INSTALLERS, USERS AND MAINTENANCE PERSONNEL
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.
This device should be considered a part of the warning system and not the entire warning system.
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.
• Do not connect this unit to the system when power is on.
• Optimum sound distribution will be severely reduced if any objects are in front of the speaker. You
should ensure that the front of the speaker is clear of any obstructions.
• All effective warning speakers produce loud sounds which may cause, in certain situations,
permanent hearing loss. You should take appropriate precautions such as wearing
hearing protection.
• After installation, ensure that all bolts and threaded joints are tightened.
• Establish a procedure to routinely check the sound system for proper activation and operation.
• Provide a copy of these instructions to the Safety Engineer, operator(s) and maintenance personnel.
• File these instructions in a safe place and refer to them when maintaining and/or
reinstalling the device.
Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death to you or others.
I. GENERAL.
The Model 41X Horn is an explosion-proof audible signaling device for hazardous locations and
provides a 100dB tone measured at 10-feet on axis.
II. INSTALLATION.
A. Unpacking.
After unpacking the Model 41X, examine it for damage that may have occurred in transit.
If the equipment 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. Mounting.
See figure l. The horn has provisions for mounting on a rigid surface. Mount the unit on the
rigid surface with user-supplied hardware.
Ensure mating threads are clean and thread
C. Electrical Connections.
To avoid electrical shock hazards, do not connect wires when power is applied.
Wiring must comply with Article 500 of the National Electrical Code and the local authority
having jurisdiction.
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" pipe into the horn.
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WARNING
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