Guardian CR2000 5101181_V1 - 09/11
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SECTION 1: Description
Simco-Ion’s Guardian CR2000 is an overhead ionizing air blower designed specifically
for use with sensitive electronic components in cleanroom applications where
electrostatic discharge (ESD) is a concern. The Guardian CR2000 Ionizing Air Blower
produces an airflow that is rich in positive and negative air ions. Directing the airflow
onto an object that has a static electricity charge will quickly neutralize the charge. If the
object has a negative static charge, it will attract positive ions from the airflow.
Conversely, if the object has a positive static charge, it will attract negative ions from the
airflow. The volume of airflow is controlled by variable speed control of the fans, which
provides a wide range of airflow settings. The airflow can also be locked into high speed
using the key switch to provide assurance of the maximum possible performance.
Airflow is directed through ionizing elements which produce air ions. These ionizing
elements are shrouded by ducts to eliminate airflow within the unit's chassis. The
ionizing elements are energized with a low current, high voltage signal. The system
contains current limiting resistors which enhances ionization stability and provides for
safety. The signal is applied to a circular arrangement of ion emitters which results in an
alternating polarity ion field. The airflow exiting the Guardian CR2000 carries these ions
to the work area to provide static neutralization.
New design features enhance both short-term and long-term ion balance stability. A
transparent duct extends from each fan output. These "ion shields" prevent ion loss to
the unit's chassis and preserve ion output and balance. The Guardian CR2000 features
a balancing circuit. The output from the monitoring circuit is indicated with two bicolor
LEDs on the face of the unit. The Guardian CR2000 also offers built-in emitter point
cleaners as a standard feature to make it easy to maintain optimum performance. To
ensure cleanroom compatibility, the Guardian CR2000 uses specially chosen
components which minimize the risk of particulation. All fans feature a specially
designed bearing system and use silicone-free lubricants. Fans are particle tested to
Class 10 cleanroom particle limits. Airflow surfaces are free of silicone materials to
further minimize the risk of contamination.
