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INSTALLATION AND SERVICE INSTRUCTIONS FOR FEDERAL MODEL 121X
SERIES C 120VAC AND 24VDC EXPLOSION-PROOF LIGHT
It is important to follow all instructions shipped with this product. This device is to be installed by a
trained electrician who is thoroughly familiar with the National Electrical Code and will follow the
NEC Guidelines as well as local codes.
The selection of the mounting location for the device, its controls and the routing of the wiring is to
be accomplished under the direction of the facilities engineer and the safety engineer. In addition,
listed below are some other important safety instructions and precautions you should follow:
• Read and understand all instructions before installing or operating this equipment.
• Do not connect this light to the system when power is on.
• After installation, ensure that all set screws and threaded joints are properly tightened.
• After installation, test the light system to ensure that it is operating properly.
• After testing is complete, provide a copy of this instruction sheet to all personnel.
• Establish a procedure to routinely check the light system for proper activation and operation.
Failure to follow all safety precautions and instructions may result in property damage, serious in-
jury, or death to you or others.
I. GENERAL.
The Model 121X Light is an explosion-proof visual signaling device for hazardous locations and
provides 90 flashes per minute. This light is UL and C.S.A. listed for indoor and outdoor use.
II. UNPACKING.
Damaged globes can lead to explosions which could result in serious injury or death.
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 glass globe requires
added protection, a separately purchased metal guard (Part No. DGXC) can be readily attached.
Recommended mounting position of this light is in a vertical orientation with the globe facing
down. The fixture mount has provisions for mounting to 3/
Wiring must comply with Article 500 of the National Electrical Code and the local authority
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 fixture mount onto the
3/4" pipe and secure with the set screw.
B. Remove the terminal block from the fixture mount by loosening the two mounting screws.
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 figures 2 and 3):
SAFETY MESSAGE TO INSTALLERS
WARNING
NOTE
WARNING
" pipe.
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