NOTE
The 120 Vac strobe units are designed to operate on both 50 and 60 Hz electrical power.
Special modifications are NOT required for the two different AC line frequencies.
2. DC Models.
The DC units are supplied with two leads, one red and one black. Connect the red (+) lead to
the positive power source terminal and the black (-) to the negative power source terminal.
NOTE
Polarity MUST be observed for operation.
II. MAINTENANCE.
SAFETY MESSAGE TO MAINTENANCE PERSONNEL
Listed below are some important safety instructions and precautions you should follow:
• Read and understand all instructions before operating this system.
• Any maintenance to the light system must be done with power turned off.
• Any maintenance to the light system must be performed by a trained electrician in accordance
with all applicable national and local codes and standards in the country of use.
• Never alter the unit in any manner. Safety in hazardous locations may be endangered if additional
openings or other alterations are made in units specifically designed for use in these locations.
• The nameplate, which may contain cautionary or other information of importance to maintenance
personnel, should NOT be obscured in any way. Ensure that the nameplate remains readable when
the housing’s exterior is painted.
Failure to follow all safety precautions and instructions may result in property damage, serious
injury, or death to you or others.
A. Flash Tube Replacement.
As strobe lights are used, the flash tubes begin to darken, causing the light output to decrease.
This darkening is characteristic of flash tubes. Darkening will begin near the base of the tube
and progress upward. Also, as flash tubes age, they may have a tendency to misfire (not fire
periodically).
After extended operation, occasionally check for flash tube degradation. Should the flash tube
misfire, have a noticeable decrease in light output, glow continuously or darken to a point
beyond that shown in Figure 2, it should be replaced.
WARNING
High voltages are present inside the light assembly. Wait at least 5 minutes after shutting off the
power before servicing this unit.
To replace the flash tube, proceed as follows:
1. Disconnect power.
2. Remove the lens by removing the two #6 Phillips pan-head screws. Carefully lift the lens
away from the housing.
3. Grasp the flash tube by its base and pull it out of the socket, using a gentle rocking mo-
tion. Install a new flash tube and reassemble the light.
4. Test the light for proper operation.
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