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• 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.
• All effective warning speakers produce loud sounds, which may cause, in certain situations,
permanent hearing loss. The device should be installed far enough away from potential listeners
to limit their exposure while still maintaining its effectiveness. The OSHA Code of Federal Regu-
lations 1910.95 Noise Standard provides guidelines which may be used regarding
permissible noise exposure levels.
• 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 person-
nel.
• 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.
The Model SST-MV can be attached to any relatively flat surface or to a variety of electrical
wall boxes. A four position plug is supplied for electrical connection. In addition, two #8-32 x
3-1/4" slotted machine screws are included to attach the unit to a four-inch square electrical
box. After the mounting method and location have been selected, follow the procedure in the
appropriate paragraph of this section. The speaker portion of SST-MV is not shown in the in-
stallation figures for clarity. The speaker and its base assembly provides three degrees of free-
dom, allowing the horn to be oriented for any coverage pattern desired. Adjustment is accom-
plished with hand tightened nuts which require minimal torque to maintain horn
position. When mounted outdoors, ensure that the rain guard on the swivel base is oriented
to protect the speaker wire openings from falling rain.
Always provide sufficient support of the mounting boxes used to mount the horn.
Failure to do so may result in property damage, serious injury or death to you or others.
1. Weatherproof Mounting in WB Box.
a. See figure 1. Insert the two #8-32 x 3-1/4" slotted pan head screws into the SST-MV base
at opposite corners.
b. Install the adapter gasket in the adapter, and place the adapter with installed gasket over
the screws inserted in step a.
c. Secure the SST-MV base/adapter assembly in the WB with the pan head screws as shown
in figure 1.
2. Wall Mounting.
Wall mounting the SST-MV in an NB or NBL box is accomplished using the adapter,
adapter gasket, and the #8-32 x 3-1/4" pan head screws as shown in figure 2.
a. See figure 2. Insert the two #8-32 x 3-1/4" slotted round head screws into the SST-MV
base at opposite corners.
b. Install the adapter gasket in the adapter, and place the adapter with installed gasket over
the screws inserted in step a.
c. Secure the SST-MV base/adapter assembly in the NB or NBL box with the pan head
screws as shown in figure 2.
CAUTION
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