Page 11 - Sterilization Training Manual
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Application Note: 110404 Rev.1
SEC Signature Cleaning and Filter Maintenance in EtO Sterilizer Applications
Optical surface contamination can occur over time because of the accumulation of dust, oil...etc carried by the load. The SEC Signature is designed to compensate for optical contamination, however regular calibrations and cleanings are recommended to ensure accurate and reliable sensing.
Contamination Effects on Unit Performance
Slight: Moderate: Heavy:
Negligible effect
Can cause calibration point shift. Recalibrating the device will restore accuracy.
If buildup becomes significant, the output signal can become “jumpy”. The Signature will activate “Optics Fault” if optical obscuration becomes a problem.
Recommended Maintenance
Maintenance intervals are highly a function of cycle/load characteristics. Dusty oily dirty loads and very wet cycles may cause the SEC Signature to require more frequent cleaning.
Any time a large volume of oil or other contaminant has entered the chamber during a cycle, the SEC Signature should be removed, filters changed, and optics cleaned. (Any time the SEC Signature is removed and re-mounted a Zero Calibration should be performed)
Filter(s) replacement: Every six months (two stage filtering system)
Optics Cleaning: Every Year
Return unit to factory for cleaning, calibrating and O ring replacement: Every two years.
Replacement Part Numbers:
SEC Signature EtO Monitor 1420597
Hydrophobic Fiberglass Cloth Filter (beige color) 1420852 Teflon Filter (white) 1420701
Sensor Electronics Corporation
12730 Creek View Avenue Savage, MN 55378 U.S.A. (800) 285-3651 (952) 938-9486 FAX: (952) 938-9617 www.sensorelectronic.com
