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66 F300S/F300SQ Ultraviolet Lamp System
Safety Interlock Tests
The fault indicators, RF detector, and external interlocks should be tested at regular
intervals to assure safe operation of the UV system.
1. With the power supply chassis inserted into the cover and single-phase power
applied, depress the IND TEST button on each power supply. All LED indicators
should light.
2. Turn all POWER control switches to ON. (No UV light is being produced by the
bulb.) Press the STANDBY switches of all units.
3. Operate the external interlock switch(es), by opening light shields, etc. The
system should shut down and produce an LED signal. Reset unit by pressing the
LAMP OFF/RESET switch on the master units.
4. To actuate self-test of the RF detector, depress the test button on the detector and
hold it down for 4 seconds. The system should shut down and produce an RF
Interlock LED signal. Reset as before.
Fault Indicators
When an interlock switch is opened or improper equipment operation is detected, a
fault signal is generated. Power is removed from the irradiator and blower of one or all
units, depending on the type of fault and the programming selected by the user. The
type of fault (Unit or System) is indicated on the front panel of the unit detecting the
fault.
Unit Faults
Unit faults are those detected within an individual module. The Lamp Control switch
and the top five light-emitting diodes on the front panel indicate the unit faults (see
Figure 14 on page 50).
Table 15. Unit Faults
Indicator Description
(HV Cable) If the LAMP OFF/RESET switch is lit when the POWER switch is
ON, but the unit will not go to STANDBY when the switch is
pressed, the high voltage cable is not connected or faulty.
LAMP OUT After ON switch pressed: the photocell was not satisfied within 8
seconds of initial startup time, or the light output fell low enough
to unsatisfy the photocell at any time after startup. After
STANDBY switch: Shorted Photocell detected.