PREFACE
THE STRONG X-90 is a projection console using a horizontally mounted xenon bulb as the
light source. The reflector is an 11 inch deep ellipse type designed to operate at 25-3/4 inches from the film
plane. The standard reflector is dichroic (“cold”) coated to reduce heat at the film plane and prolong bulb life.
THE CONSOLE LAMPHOUSE is designed to incorporate xenon bulbs ranging from 1000 to
2500 watts. The standard switching xenon power supply is adjustable to operate these wattages throughout
their current ranges. Bulb Adapter Kit No. 31934 is supplied with each X-90 console, and will accommodate all
bulbs approved for used in the X-90.
TWO BULB SEAL BLOWERS are wired to the lamphouse control circuit to maintain the
bulb seals at a safe operating temperature. An air vane switch, located at the rear blower outlet, will interrupt
lamphouse operation in the event of a main blower failure, or if the main blower is not moving adequate air. The
blower motors are protected by a circuit breaker on the xenon power supply.
INTERLOCK SWITCHES on both the rear and operator side lamphouse access doors prevent
operation of the lamphouse if either door is opened. These switches insure operator safety and must not be
bypassed. The off-operator side door may be opened during operation to permit adjusting the xenon power
supply. Key locks on all doors assure access to authorized personnel only.
THE STANDARD ANALOG INSTRUMENT PANEL includes an elapsed time meter to record
the number of hours the bulb has operated. These hours should be recorded on the XENON BULB RECORD
on the inside back cover of this manual in the event of a warranty adjustment. The ammeter indicates the
operating current of the bulb; see the warranty information packed with the bulb to determine the correct current
setting for the bulb in use. Pressing the VOLTAGE switch will change the meter to display the DC voltage at the
arc. Volts times amperes will indicate exact wattage.
AN OPTIONAL DIGITAL INSTRUMENT PANEL employs a backlit LCD screen which
continuously displays the bulb current (amperes), arc voltage, operating wattage, and elapsed hours. The Bulb
Hours display (BLB) can be re-set upon installation of a new bulb, while the actual elapsed hours of the X-90
console are accumulated by the Total Hour (HR) display. To establish and maintain an accurate history of
xenon bulb usage, the Total Hour (HR) figures should be entered on the Xenon Bulb Record.
A POWER DISTRIBUTION CENTER is standard on the X-90. The input power require-
ment is a four-wire, three phase AC line, voltage as specified on the equipment Data Plate. An adequate earth
ground is also required. See the INSTALLATION INSTRUCTIONS following.
ALL BRANCH CIRCUITS are individually protected by means of circuit breakers wired to
the distribution panel. A ten ampere, 115 V.AC feed for the lamphouse exhaust blower is provided, and includes
an interlock circuit to disable lamphouse operation if the exhaust blower is not energized. A MASTER contactor
energizes all branch circuits simultaneously.
X90/001
