Xenotech BRITELIGHT 10000AR, Руководство по установке

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PAGE 21
IGNITOR CIRCUIT THEORY OF OPERATION
When power is applied through the orange and white wires from pins 1 and 5 respectively of (P1) to the
input step up transformer (T2) at 115 vac, 60 Hz, it causes the spark gap (E1) to break down. The rf trap (L1,
C3) in the secondary of (T2) minimizes rf losses to the power line. The spark gap breakdown allows current
to flow in the resonant circuit consisting of (C1) and the primary of (T1). A series of damped oscillations
occur (at 2 to 4 MHz) during a portion of each half of the 60 Hz line frequency. These high frequency
pulses are stepped up in voltage (to approximately 60 KV) thru (T1) and then applied to the lamp
terminals. (C2, C4) provides a low impedance, rf return path for the high voltage pulse thorough the
lamp. An arc is struck in the lamp ionizing the insulating xenon gas and when suitable DC power is
available the lamp will ignite.
SAFETY INTERLOCK CIRCUIT THEORY OF OPERATION
The safety interlock circuit is composed of a thermal switch (S2) located on the lower right front spider arm
and an air pressure switch (S5) located at the rear of the lamp head near the cooling blower.
If the lamp head becomes too hot to safely operate the lamp the thermal switch (S2) will open causing
the ballast contactor (K1) to de-energize turning the lamp off. When the lamp head cools to a safe
operating temperature the thermal switch (S2) will reset and the system will automatically relight.
If the lamp head cooling system becomes inoperative or becomes blocked with debris the air pressure
switch (S2) will detect the drop in blower intake pressure and will open causing the ballast contactor (K1)
to de-energize turning the lamp off. When the problem has been corrected and the cooling system is
operating correctly the air pressure switch will reset and the system will relight.