AMERICAN ULTRAVIOLET Lesco SUPERSPOT MK III, Technical Reference Manual, Page: 14 / 54

KMM1002P
12
The bi-level power supply is a solid state, high frequency switching DC supply suitable for
operation on 110V and 220V
±
10%, 50/60 Hz. The power supply provides the high
voltage pulse necessary to ignite the lamp and the operating voltage for continuous lamp
operation. The power supply also provides a 24 VDC source for the cooling fans and the
shutter solenoid.
3.2.5. Shutter Assembly
The shutter assembly is a positive open, spring return rotary solenoid connected to the
shutter plate for efficient control and safety of the shutter open cycle. The shutter is also
connected to an interlock switch located on the lightguide receptacle where the end of the
lightguide is inserted. This switch disables the shutter in the closed position to ensure that
there is no unintentional exposure if the lightguide is missing or improperly inserted into
the MK III.
3.2.6. Timer/Manual Selector Switch
The Timer/Manual toggle switch is located next to the bottom-cooling fan on the recessed
panel at the rear of the unit. In the "Timer" position, pressing the footswitch triggers the
timer and opens the shutter. The shutter automatically closes when the timer reaches the
preset duration. In the "Manual" position, the timer is inoperative and the shutter stays
open as long as the footswitch is pressed down or the signal is held on.
3.2.7. Footswitch
The remote footswitch is equipped with a 6-foot cable, which plugs into a receptacle at
the rear panel of the MK III. The footswitch is used to activate the timer when operated in
the Timed-Exposure mode, or the shutter when operated In the Manual operation mode.
** CAUTION **
Disconnect power from system or unplug system from wall or
VAC power source before connecting the footswitch adapter.
3.2.8. Power Cord
The MK III comes with a 6 foot, 3 prong 110V shielded power cord, which plugs into a
receptacle located at the rear panel. 220V power cords are available on request.