Federal Signal AM300X Instrucciones Para La Instalación Y El Mantenimiento página 6

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. See figures 2 and 3. Connect the audio common (-) leads to the 25 V or 70 V
common terminal, depending on the desired operating voltage and audio positive (+) leads to desired
wattage terminal.
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. Connect the white speaker wire to the terminal marked with the desired operating
voltage, 25 Vrms or 70 Vrms (see figure 3).
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 prop-
erly. 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. Recommendations 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 oper-
ates 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.
Property damage, serious injury, or death could occur if the housing is not closed prop-
erly. To reduce possibility of explosion, housing cover must be kept tight while circuits
are energized.
B. After completion of initial system test, establish a program for periodic testing of this
device. Refer to NFPA 72G, local Fire Codes and the authority having jurisdiction for this informa-
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