Filter
Top Products
Installation, Operation, and Maintenance Manual # 509252 Rev R 61
The QRO consists of a high-voltage, low-current power supply section located in the
P300MQ power supply that allows the magnetron in the irradiator to maintain an
ignited bulb at a very low input power level (approximately 10%) and a very low UV
output level (less than 1%). This feature is intended for use in processes that require
occasional periods of decreased UV output, or in the event of a short duration process
interruption.
The actual restart time of the bulb will depend upon the elapsed time from when the
lamp was switched from the Lamp On state to the Standby state. Representative data
for the restart time from the QRO state to the Lamp On state (70%, 80%, and 90% UV
output) is shown versus QRO state duration in Figure 16, Figure 17, and Figure 18.
The QRO state, when enabled, will automatically occur when the power supply is
switched from the Lamp On state to the Standby state. The QRO state is indicated by
the alternate flashing of the green Lamp On and yellow Standby buttons on the front
of the power supply. The QRO state will last for a maximum of 40 seconds, after which
it will revert to the Standby state and the yellow button only will remain on.
CAUTION: The QRO is not intended for use
as a shutter, or in processes that require rapid
On-Off cycles. This kind of use may be
detrimental to bulb life span
.
WARNING: While the lamp’s light output is low
during the QRO state, both eye and skin protection
should be worn in the event of possible direct or
indirect exposure. Refer to Chapter 1, “Safety” for
detailed information regarding ultraviolet radiation
safety.