Replacing The Circuit Board - Federal Signal 224XST Instrucciones De Instalación Y Mantenimiento

d. Before replacing the dome, ensure that the gasket is properly
seated and shows no signs of cracking or other deterioration.
Replace the gasket if it is damaged or shows signs of
deterioration. See "Ordering Accessories and Replacement
Parts" on page 15.
e.
Place the dome over the base, aligning the recesses inside
the dome lip with the four pins on the base.
f.
Push down on the dome and turn it clockwise approximately
3/4 inch (19 mm) until it locks in place.
g.
Insert and tighten the retaining screw into the bottom of the
dome.
h. Test the light for proper operation.

Replacing the Circuit Board

SHOCK HAZARD—Strobe systems generate high voltages.
Disconnect power from the strobe system and wait at least 5
minutes before opening the light. Do not apply power to the light
while it is open. Failure to follow this warning could result in
serious injury or death.
ELECTROSTATIC DISCHARGE: The circuitry of this warning light
can be damaged by electrostatic discharge (ESD). Always follow
anti-static procedures while replacing the circuit board.
1. Remove the circuit board:
a.
Disconnect power from the electrical circuit.
b. Wait at least five minutes before removing the dome.
c. Remove the retaining screw located at the bottom of the dome.
d. Grasp the top of the dome and push down while turning the
dome counterclockwise approximately 3/4 inch (19 mm).
e.
Gently lift the dome away. Ensure that the gasket between
the dome and base is not lost.
Electraray
Installation and Maintenance Instructions
Models 224XST, 225XST, and 225XST-I
®
13