Wiring the AC Models (4375S-120-240)
1.
Ensure that power is off.
2.
Install conduit to conduit opening and tighten set screw.
3.
Pull field wiring through conduit into enclosure/base.
4.
Remove threaded dome assembly by twisting it counterclockwise.
5.
Loosen the printing wiring board (PWB) mounting screws and detach the PWB assembly to access
the lead wires.
6.
Connect the black lead to the phase (hot) side of the power source and the white lead to the
common (neutral) side of the AC power source. Connect the green wire to ground.
7.
Reattach the PWB assembly and secure the dome to the base of the beacon.
8.
Connect power to the beacon and test it for proper operation.
Wiring DC Models (4375S-12-74)
1.
Ensure that power is off.
2.
Install conduit to conduit opening and tighten set screw.
3.
Pull field wiring through conduit into enclosure/base.
4.
Remove the threaded dome assembly by twisting it counterclockwise.
5.
Loosen the printing wiring board (PWB) mounting screws and detach the PWB assembly to access
the lead wires.
6.
Connect the red (+) lead to the positive side of the power source and the black (–) lead to the
negative side of power source. Connect the green wire to ground. Reattach the PWB assembly and
secure the dome to the base of the beacon.
7.
Connect power to the beacon and test it for proper operation.
Wiring DC Supervisory Models (4374S-12-74) with four lead wires
1.
Ensure that power is off.
2.
Install conduit to conduit opening and tighten set screw.
3.
Pull field wiring (five total including ground conductor) through conduit into enclosure/base.
4.
Remove the threaded dome assembly by twisting it counterclockwise.
5.
Loosen the printing wiring board (PWB) mounting screws and detach the PWB assembly to access
the lead wires.
6.
Connect one red (+) lead to the positive side of the standard power source and one black (–) lead to
the negative side of the standard power source. Connect the green wire to ground. For supervisory
powering of the unit, connect the second red (+) lead to the supervisory positive power connection
and the second black (–) lead to the supervisory negative power connection.
7.
Reattach the PWB assembly and secure the dome to the base of the beacon.
9.
Connect power to the beacon and test it for proper operation.
EXPLOSION HAZARD—To reduce the risk of fire or explosion, do not install the beacon in a hazardous
location if the operating temperature exceeds the hazardous atmosphere’s ignition temperature. Before
proceeding, consult the product nameplate and determine the operating temperature of the beacon.
OPERATION
To operate the unit, just apply power. There are no adjustments to make for flash rate or intensity.