Installation and Maintenance Instructions
Overview of Models 121A and 121S
Models 121A and 121S rotating lights are designed for mounting
on a flat horizontal or vertical surface or on a 1/2" NPT threaded
pipe. Mounting on a vertical surface with the lens positioned
upward can be accomplished using a separately purchased Federal
Signal wall (Model LWMB2) or corner (Model LCMB2) mounting
bracket. The Model 121A is available for 24 Vdc, and the Model
121S is available for 120 Vac, 50/60 Hz.
Unpacking the Light
After unpacking the light, examine it for damage that may have
occurred in transit. If the light 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 discarding them. If
any parts are missing, please call Federal Signal Customer Support
at 708-534-4756 or 877-289-3246.
Pipe Mounting the Light
Models 121A and 121S can be mounted on 1/2 inch pipe.
Mounting hardware and installation details are left to the installer.
NOTE: To prevent the connection from loosening, tighten the
fixture to a MINIMUM torque of 5 ft.-lb (6.8 N
it onto the pipe.
Surface Mounting the Light
To mount the light on a flat surface:
1. Using the gasket as a template, scribe the three mounting
holes and the center hole for surface mounting.
2. Drill a 3/16" (4.8 mm) diameter hole at each of the three
scribed mounting marks.
3. Drill or punch a 1" (25.4 mm) diameter hole at the center for
the wires.
Models 121A and 121S Vitalite
6
m) after threading
•
Rotating Light
®