INSTALLATION
(continued)
WHENEVER MAKING A COARSE ADJUSTMENT, again check the ammeter
reading and make certain the current is within the desired range. A re-adjustment of the fine taps is
frequently required after changing coarse taps.
OBSERVE CURRENT (AMPERAGE) READING
ONLY
when setting the output.
The “voltage” reading can vary between individual xenon bulbs, and while wattage can be determined
by multiplying volts times amperes, it is possible to overdrive and damage the bulb by operating it over
210 amperes. The arc voltage reading serves as a troubleshoooting tool detailed later.
REMOTE IGNITION CONTROL is enabled by connecting a dry contact across
Terminals TB3-1 and TB3-2 and placing the REMOTE/LOCAL switch on the control panel to
REMOTE. The lamphead will then ignite only when SYSTEM ON/OFF switch is in the ON posi-
tion and the remote control contact is closed.
AFTER PROLONGED OPERATION, the light output of the xenon bulb will decrease.
This is a normal factor of bulb aging, and can be compensated by raising the DC output of the xenon
power supply. If the bulb was first operated at “nominal” current, the power supply output can
gradually be increased to, but not in excess of, he maximum current specified by the bulb manufac-
turer. Increase the current as instructed above. Decrease the power supply output to its former
“nominal” current level upon the installation of a new replacement bulb.
TIMER PC BOARD OPERATION
TIMER PRINTED CIRCUIT BOARD ASSEMBLY (Part No. 32-70137) provides
timing functions to lamphead ignition and shutdown. Upon closure of the POWER “ON” switch
(“Local” mode), and assuming all interlocks are closed, Relays K2 and K3 latch and energize the
igniter circuit. The lamphead igniter will discharge and provide a pulsed arc between the electrodes of
the xenon bulb. A functional bulb will normally ignite after one or two of these pulses. If the bulb does
not ignite within a period of one (1) minute, the relays will drop out and de-energize the igniter circuit
to protect the bulb electrodes. In this event, it is necessary to replace the xenon bulb or troubleshoot
the lamphead and power supply system.
THE “STRIKE” SWITCH on the control panel bypasses the above timing function
and provides an immediate ignition pulse assuming the system is “ON” and all interlocks closed.
AFTER EXTINGUISHING THE ARC (POWER “OFF” setting), Time-Delay Relay
K4 will actuate and allow the cooling blowers to continue operating for 20 minutes. This measure is
necessary to properly cool the xenon bulb and insure full bulb life. Most xenon bulb manufacturers
will not grant warranty credit on bulbs that are
not
forced-air cooled after operation.
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