INSTALLATION INSTRUCTIONS
FOR
3H, 4H, 4M, AND 6H AIR HORNS
SAFETY MESSAGE TO INSTALLERS
People’s lives depend on your safe installation of our products. It is important to
follow all instructions shipped with the products. This device is to be installed by
qualified personnel who are trained in pipefitting and electrical wiring, and are
familiar with national as well as local codes.
The selection of the mounting location for the device, its controls and routing of
the pipe 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.
•
Optimum sound distribution will be severely reduced if any objects are
in front of the horn. You should ensure that the front of the horn is clear
of any obstructions.
•
All effective warning horns produce loud sounds which may cause, in
certain situations, permanent hearing loss. You should take appropriate
precautions such as wearing hearing protection when testing the horn.
•
After installation, ensure that all bolts and threaded joints have been
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 maintain-
ing 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.
A.
GENERAL.
These air horns utilize stainless steel diaphragms and corrosion resistant castings
finished with a gray polyester coating. They are capable of being operated on air
pressure of 20 to 150 p.s.i.g., but are tuned for optimum audibility at 80 to 90 p.s.i.g.
The Model 3H horn is tuned to a frequency of 750Hz. It has a female 3/8 I.P.S
threaded opening for connection to the compressed air system, and is light enough to be
supported by the pipe to which it is connected.
The Model 4H horn is tuned to 450Hz and the Model 4M horn is tuned to 340Hz.
Both horns have a female 1/2 I.P.S. threaded opening for connection to the compressed
air system, and are provided with a mounting ear on each side of the casting that
includes a hole for 5/16 inch bolts.
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