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The Initial Startup Procedure, Master/Slave Operation, and Remote Operation of power supplies with the QRO are the same as for standard non-QRO units. See Appendix E, “Replacement Parts” for the QRO parts list. Installation, Operation, and Maintenance Manual # 509252 Rev R 63 F300S/F300SQ Ultraviolet Lamp System Chapter 5. Troubleshooting DANGER: High Voltage -- Use extreme caution at all times when troubleshooting the power supply. Line voltages are present even when the lamp control switch is set to STANDBY. Do not measure any voltages not specified in the troubleshooting procedures: dangerously high voltages exist in the power supply. Do not touch power supply/irradiator cable connectors while the system is on. High voltages are present in the connector. Do not touch any power supply components or wiring while the unit is operating. To troubleshoot the power supply, first turn off and disconnect all power to the unit. All high voltage capacitors have an internal discharge resistor which should discharge to a safe level in five seconds. Physically shorting the capacitor terminals with an insulated screwdriver blade is advised as an additional safety measure. DANGER: Ultraviolet Radiation -- Do not test the irradiator without using adequate ultraviolet light shielding and never look directly at the UV lamp. Severe ultraviolet burning of the skin and eyes can result without proper safeguards. Basic Checks Check that input power is connected properly. Actual line voltage must be within 10% of the voltage rating shown on the equipment label. Labels are located on the rear of the power supply. If the input voltage does not match, contact Fusion UV Systems. Installation, Operation, and Maintenance Manual # 509252 Rev R 65 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. F300S/F300SQ Ultraviolet Lamp System Table 15. Unit Faults (continued) Indicator Description PWR ERROR Improper operation of magnetron: either no magnetron anode current 2-4 seconds after high voltage is applied, or the presence of high voltage when the Lamp system is in OFF or STANDBY. CAUTION: If a PWR ERROR fault is indicated, press the LAMP OFF/RESET switch immediately. To prevent magnetron damage, single-phase power should be disconnected (see PWR ERROR fault). PS TEMP The power supply is overheating. BLWR PRESSURE Cooling air pressure within the irradiator is insufficient. System Faults The bottom three LEDs indicate system faults. These faults always shut down ALL units in the system, causing all LAMP CONTROL switches to flash. System interlock switches and the RF detector may be connected to any unit, but are normally connected to the master. System faults will then be detected and displayed at the master power supply. Table 16. System Faults Indicator Description SYS BLWR Insufficient cooling air pressure in an external supply or exhaust blower causes pressure switch to open. EXT INTLK Open external interlock switch on a plenum cover, for example, connected at customer option. RF INTLK Excessive RF at the RF detector, or loss of power to detector. Fault Diagnosis Tables To determine the likely caus...

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