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IV. MAINTENANCE.
To prevent ignition of hazardous atmospheres, disconnect the fixture from the supply circuit before opening.
High voltages are present inside the light assembly. Wait at least 5 minutes after disconnecting the power before
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 who is thoroughly familiar with
all applicable national and local codes in the country of use.
• Never alter the unit in any manner. Safety of the unit may be affected if additional openings or other alterations
are made internal components or housing.
• 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.
• After performing any maintenance, test the light system to ensure that it is operating properly.
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 4—it
should be replaced.
High voltages are present inside the light assembly. Wait at least 5 minutes after disconnecting the power
To change the strobe tube, proceed as follows:
1. Disconnect power.
2. Loosen set screw located on the globe assembly.
3. Remove the globe assembly from the main casting by rotating the globe counterclockwise. If the globe
assembly will not unscrew, back out the set screw a few additional turns.
To maintain the explosion-proof integrity of the enclosure, DO NOT damage the globe or threads while
Lubricated joints exposed for long periods of time may attract small particles of dirt or other foreign materials.
4. Grasp the top of the dome and push down while turning the dome counter-clockwise approximately
3/4-inch.
5. Gently lift the dome away. Ensure the gasket between the dome and base is not lost.
6. Grasp the flash tube by its base and pull it out of the socket, using a gentle "rocking" motion. Insert the
new flash tube.
servicing this unit.
SAFETY MESSAGE TO MAINTENANCE PERSONNEL
before servicing this unit.
disassembling or reassembling unit.
Body and cover joints should be reassembled immediately.
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