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Federal Signal
signaling.fedsig.com
2.
Strip the wire insulation 8 mm to 9 mm (0.33 in).
NOTE:
When using more than one single or multiple strand lead, the connection into either side of any terminal
must be joined in a suitable manner, e.g., two conductors into a single insulated crimped bootlace ferrule.
3.
The loudspeaker is factory-wired as 15 W. To change the wattage tap setting, it is necessary to modify the factory
wiring on the printed circuit board located inside the main housing. Refer to “Wiring the Ex d Models” on page
6 for information on changing the tap settings. The line bushing is wired as follows: (1) Audio +, (2) Audio -, (3)
Earth.
4.
To connect wires, press the button on the terminal block with a Phillips screwdriver and insert the wire into the
round opening. Release the button to make the connection.
5.
Connect the audio + wire from the audio source to the position marked Aud + on the terminal block.
Figure 6
Connections for DC or AC Ex de loudspeaker
Aud+
L1/+
L2/-
L3/Alt+
Aud-
Aud+
L1/+
L2/-
L3/Alt+
Aud-
A
A
6.
Connect the audio - wire from the audio source to the position marked Aud- on the terminal block.
7.
Connect the ground wire to the position marked
on the terminal block.
8.
Secure the cover on the terminal box with the four M4 screws. Ensure that the gasket is properly seated to maintain
IP rating. Do not overtighten the screws.
Maintaining the Loudspeaker
SAFETY MESSAGES TO MAINTENANCE PERSONNEL
Listed below are some important safety instructions and
precautions you should follow:
•
Read and understand all instructions before operating this system.
•
Repair of flamepaths is not recommended.
•
If you acquired a significant quantity of units, it is recommended that spares also be made available.
•
To avoid electrical shock hazards, do not connect wires when power is applied. Failure to observe this warning may
lead to serious injury or death.
•
Any maintenance to the loudspeaker system must be performed by a trained electrician who is thoroughly familiar
with all applicable national and local codes in the country of use.
•
Any maintenance to the loudspeaker system must be done with power turned off.
•
Check the loudspeaker periodically to ensure that the effectiveness of the device has not been reduced because it
has been clogged with a foreign substance or because objects have been placed in front of it.
•
Never alter the unit in any manner. Safety of the unit may be affected if additional openings or other alterations are
made to the internal components or housing.
•
The nameplate, which may contain cautionary or other information of importance to maintenance personnel, should
NOT be obscured in any way. Ensure that the nameplate remains readable.
•
After performing any maintenance, test the loudspeaker
system to ensure that it is operating properly.
Failure to follow all safety precautions and instructions may result in property damage, serious injury, or death.
