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b.
Connect the positive (+) power source/select wires to the terminal block positions marked Alt02, Alt03,
Alt04. Please note that only three tones are remotely selectable on Ex de 24 Vdc units.
c.
Connect the ground wire to the position marked Alt01 on the terminal block.
5.
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.
Selecting the Tone for Ex de Models
All effective warning sounders produce loud sounds, which may cause, in certain situations, permanent hearing loss.
Take appropriate precautions such as hearing protection.
To select the tone for Ex de models:
1.
Unscrew the M3 hex set screw on the side of the housing one full turn.
2.
Remove the cover from the housing by turning the cover counter-clockwise. Three 120-degree spaced reliefs
are provided for a 3/8-inch spanner wrench if needed. If the cover will not unscrew, back out the set screw a few
additional turns.
3.
Loosen the captive Phillips screw retaining the driver/printed circuit board (PCB).
4.
Slide out the PCB and set the tone selector switch to the desired tone.
5.
Insert the driver/PCB into the enclosure taking care not to pinch the wiring and fully tighten the PCB captive screw.
6.
Place cover on housing and tighten it by turning it clockwise.
7.
To ensure O-ring compression, the cover must be fully seated against the housing when the threads are tightened.
Turn the M3 set screw on the side of the housing until the screw contacts the housing.
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.
•
The repair of flamepaths is not recommended.
•
If you acquired a significant quantity of units, then 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 sounder 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 sounder system must be done with the power turned off.
•
Check the sounder 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 sounder 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.
Federal Signal signaling.fedsig.com
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