English
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The
iSpot 575
has several automatic functions and features which at first glance may not be noticed. However, they serve
to add functionality to the projector, and to assist in extending the serviceability of the unit.
on-board hot-strike timer
This on-board feature ensures that the operator cannot re-ignite the lamp until 6 minutes have passed since the lamp was
switched off.
This is designed to avoid damage to the lamp ignition circuit which can occur if an operator continually attempts to strike a
hot lamp. It further protects the lamp from possible damage due to voltage spikes which may occur at this time.
NOTE:
The timer is reset only when the projector is switched off.
on-board lamp ignition timer
This feature ensures that an operator cannot repeatedly attempt to strike a lamp for more than 3 seconds if the lamp does
not ignite. It will automatically attempt to restrike the lamp for 3 seconds in every subsequent minute.
This is designed to protect the ballast and lamp ignitor from prolonged usage in less than ideal conditions.
NOTE:
it is important to replace a lamp that is at the end of its useful life and replace it. Old lamps are generally progressive-
ly more difficult to strike.
thermal protection
Two thermal sensors in the body and base of the
iSpot 575
protect the unit against overheating.
The thermal sensors operate by removing voltage to the lamp if the ambient temperature rises above a preset maximum due
to either less than ideal air circulation around the fixture or in the event of cooling fan failure.
automatic realignment
An internal 4 point encoder system allows the
iSpot 575
to return to its correct position in case the unit is accidentally
knocked out of alignment whilst operating. This is particularly useful if the projector is to be mounted on the floor in a posi-
tion where the performer or artist may accidentally bump the unit.
NOTE:
this facility may be deactivated if desired (see section 11 opto).
17. Automatic internal functions
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