Model 400 Series Lights
15
Replacing the Strobe Tube (400ST)
SHOCK HAZARD—Strobe and HID light systems generate high
voltages. Disconnect power and wait 5 minutes before opening
the unit. Do not apply power to the unit while the unit is open.
Failure to follow this warning could result in serious injury or
death.
HANDLE STROBE LAMPS CAREFULLY—Strobe lamps get
hot enough to burn you. Always allow these lamps to cool
before handling them. Strobe lamps are also pressurized and if
broken can result in flying glass. Always wear gloves and eye
protection when handling the lamps.
Failure to follow this caution may result in personal injury.
DO NOT TOUCH STROBE LAMPS WITH BARE HANDS—
Oil deposits on the glass portion of the strobe lamp can cause
the glass to fracture during use. If you are unsure if the glass
has been handled without gloves, clean the glass using a soft
cloth and isopropyl alcohol before installing the lamp.
As strobe lights are used, strobe tubes begin to darken causing
the light output to decrease. This darkening is characteristic of
strobe tubes and can be viewed through the top of the dome. It
will begin near the base of the tube and progress upward. Also,
as strobe tubes age, they may have a tendency to misfire (not fire
periodically).
After extended operation, occasionally check for strobe tube
degradation. Should the tube misfire, have a noticeable decrease in
light output, glow continuously, or darken to a point beyond that as
shown in Figure 5 on page 16, replace the tube. Not replacing the
strobe tube when any of the above conditions exist could cause a
breakdown of other components on the printed circuit board.
