Federal Signal 27XST Instrucciones De Instalación Y Servicio página 4

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SHOCK HAZARD — To avoid electrical shock hazards, do not con-
nect wires when power is applied.
C.
Connect the supply wires to the terminal block as follows (see Figure 2):
1.
DC Models
REVERSE POLARITY/MISWIRING — The DC units are polarity sen-
sitive, and MAY BE DAMAGED by incorrect electrical hookup. When
connecting the DC strobe unit to the voltage supply lines, POLARITY
MUST BE OBSERVED. In addition, damage will result if the voltage
rating of the model is exceeded.
a.
screw marked "L+." Connect the negative (−) power source wire to the terminal block
screw marked "N–".
b.
the green screw in the pendant mount.
2.
AC Models
SHOCK HAZARD — To reduce shock hazards during maintenance
POLARITY MUST BE OBSERVED when connecting AC units to the
power source.
The 120 Vac and 240 Vac strobe units are designed to operate on both 50 Hz
and 60 Hz electrical power. Special modifications are NOT required for the
two different AC line frequencies.
a.
screw marked "L + ." Connect the common (neutral) power source wire to the terminal
block screw marked "N–."
b.
the screw in the fixture mount.
D.
Replace the terminal block in the pendant mount and secure with the previ-
ously loosened mounting screws.
E.
To prevent galling and ease future maintenance, ensure that the threads on
the pendant mount are clean and lubricated with a corrosion-inhibiting grease such as
petrolatum or soap-thickened mineral oils. Thread the fixture clockwise into the mount
and tighten it securely.
Connect the positive (+) power source wire to the terminal block
If required by local building codes, connect the earth ground wire to
Connect the phase (hot) power source wire to the terminal block
If required by local building codes, connect the earth ground wire to
NOTE
-3-
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