Replacing The Circuit Board; Figure 2 Dome Removed From Base - Federal Signal Electraflash 141ST-120 Instrucciones De Instalación Y Mantenimiento

Installation and Maintenance Instructions
5. Insert the new tube into the connectors on the board surface.
Make sure all three pins enter the board connectors and apply
pressure slowly to the outer leads to properly seat the strobe tube.
6.
Place the outer dome back into position and reinstall the two
screws in the outer dome.
7. Apply power and verify that the light operates properly.

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
ant-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.
Electraflash
10

Figure 2 Dome removed from base

Models 141ST-120 and 141ST-240
®
DOME
DOME SCREW (2)
STROBE TUBE
MOUNTING SCREW IN PCB (2)
STROBE CIRCUIT BOARD
DOME BASE