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56 F300S/F300SQ Ultraviolet Lamp System
• Bulb producing insufficient output to activate the photocell
For proper initial ignition, the recommended “MINIMUM LAMP ON” time required
for this system is “ten (10) seconds” at normal air pressure (3.5 inches w.c.) and full
power operation (100% power level).
As previously mentioned, a “LAMP OUT” fault can occur when the bulb does not
reach sufficient output to activate the sensing photocell. This will particularly occur at
initial startup of the system, after successive “short cycles” (LAMP ON times below
10 seconds), or at the initial startup of a new bulb. In these instances, the bulb fill
material has not completely vaporized. With repeated attempts to start the system, the
problem may become worse, and can reduce the life of the electrical components.
Refer to Chapter 5, “Troubleshooting” for other possible causes of a LAMP OUT
condition.
Power
With the POWER switch in the OFF position, neither the control card nor the high
voltage circuitry are energized. With the switch in the ON position, the power supply
cooling fans and the control card are energized, and the LAMP Control switches are
enabled.
Off/Reset Control
When a fault occurs, the fault must be corrected and the unit(s) reset by pressing the
LAMP OFF/RESET switch before operation can be resumed.
1. If a UNIT fault occurs, correct and reset the individual unit.
2. If a SYSTEM fault occurs, reset the Master unit.
3. If a slave has an RF detector connected, reset the Master when the Slave
indicates a fault.
4. If a system is operated by a remote ON/STANDBY switch, reset the MASTER
power supply when a system fault occurs.
5. If a system uses a remote LAMP OFF/RESET switch, that switch may be used
instead of the front panel switch to reset a fault.
Initial Startup Procedure, Single Unit
1. Turn POWER switch to ON position and press the LAMP OFF/RESET switch:
The red LAMP OFF indicator is lit.
2. Press the STANDBY switch: the yellow STANDBY indicator blinks, then stays
lit.