Federal Signal AM302X Consignes Pour L'installation Et L'utilisation page 6

Audio wires should be sized properly by your licensed installation electrician
for your service application. This cable requires a twisted shielded pair with
an 18 AWG minimum and should produce no more than 15% signal line loss
over the length of the cable run.
National Electrical Code, as well as local codes, must be followed during
installation of these models. All electrical wiring must be routed through conduit and
fittings approved for explosion-proof installations.
1. Connect the audio common leads (-) to the speaker's common terminal
(marked COM) and the audio positive (+) leads to the appropriate operating voltage
(see figures 2 and 3).
An un-insulated section of a single conductor must NOT be looped around a
terminal and used as two separate connections. NFPA 72 requires that the
wire is severed to provide electrical supervision of the connection.
2. Using the supplied jumper wire, connect one end of the jumper wire
to the terminal marked with the desired wattage terminal (see figure 3). Connect the
other end to the terminal marked "SPK".
3. Carefully reinstall housing cover and tighten it until the cover flange
makes contact with the housing. Tighten the setscrew on the cover to secure the cover.
Verify that the mounting bolts have been securely tightened.
Property damage, serious injury, or death could occur if the housing is not
closed properly. To reduce possibility of explosion, housing cover must be kept
tight while circuits are energized.
IV. TESTING / OPERATING.
Under certain conditions these devices are capable of producing sounds loud
enough to cause hearing damage. Adequate hearing protection should be
worn if standing within close proximity to device while testing. Recommen-
dations in the OSHA Sound Level Standard (29 CFR 1910) should not be
exceeded.
A. After installation is complete, be sure to test the system to verify that each
speaker operates satisfactorily. If it is found that the unit is too loud for its location, a
lower wattage tap may be selected. Carefully remove the housing cover and move the
positive (+) lead to a lower wattage tap (see figure 3). Reinstall the housing cover and
retest.
NOTE
-4-