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Federal Signal 121X Instrucciones De Instalación Y Servicio página 3

Luz a prueba de explosion de 120vca y 24vcc

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After unpacking the Model 121X, examine it for damage that may have occurred in
transit. If the equipment has been damaged, do not attempt to install or operate it,
file a claim immediately with the carrier stating the extent of the damage. Carefully
check all envelopes, shipping labels and tags before removing or destroying them.
III. INSTALLATION
The glass dome is part of the explosion-proof housing. In applications
where the dome requires added protection, a separately purchased
metal guard (Part No. DGXC-SB) can be readily attached.
The recommended mounting position of this light is in a vertical orienta-
tion with the dome facing down. The pendant mount has provisions for
mounting to 3/4" pipe.
The instructions below are for lights using the pendant mount option (PMXC-SB).
Refer to instruction manual 25500050 for the ceiling mount (CMXC-SB) and wall
mount options (WMXC-SB).
Wiring must comply with Article 500 of the National Electrical Code and the local au-
thority having jurisdiction.
For marine applications, all wiring (including supply wire) must be stranded wire and
meet the USCG (CFR46) Section (110-113).
A. See Figure 1. Ensure that the mating threads are clean. Thread the pendant
mount onto the 3/4" pipe and secure it with the set screw.
B. Remove the terminal block from the pendant mount by loosening the two mount-
ing screws.
SHOCK HAZARD — To avoid electrical shock hazards, do not connect
wires when power is applied.
C. Connect the supply wires to the terminal block as follows (see Figure 2):
1. DC Lights
a. Connect the positive (+) power source wire to the terminal block screw marked
"L + ." Connect the negative (–) power source wire to the terminal block screw
marked "N – ."
b. If required by local building codes, connect the earth ground wire to the green
screw in the fixture mount.
2. AC Lights
SHOCK HAZARD — To reduce shock hazards during maintenance POLAR-
ITY MUST BE OBSERVED when connecting AC units to the power source.
a. Connect the phase (hot) power source wire to the terminal block screw
marked "L + ." Connect the common (neutral) power source wire to the termi-
nal block screw marked "N – ."
NOTE
NOTE
WARNING
WARNING
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