ASP STERRAD 100, Service Manual, Page: 25 / 309

If the pressure exceeds the set limits, the cycle is canceled with the
message “Pressure Out of Range.”
The RF power is delivered to the chamber at 400 +25 -35 Watts. If the
RF Power is not within the set limits, the cycle is canceled with one of
the messages “RF Amplifier Failure,” “Plasma Not Lit,” and “Low Plasma
Power.”
Vent Stage
At the end of the Plasma Stage, the RF energy is turned off and the
process chamber is vented to the atmosphere through a bacteriological
(HEPA) filter. The chamber is pumped down again to 1 Torr and then
again vented to the atmosphere.
At the end of the second vent stage, which is the end of the sterilization
cycle, an audible alarm tells the operator that the door may be opened
and the sterilized contents removed from the process chamber. The
printer prints a summary of cycle parameters, and the LCD displays
“Process Complete.”
First Vent
Duration Parameter Limit
Variable Pressure switch ~690 Torr
Pump Down
Duration Parameter Limit
Variable Pressure 1 Torr
Final Vent
Duration Parameter Limit
Variable Pressure switch ~690 Torr
Theory of Operation-Overview System Operation
ASP Service Guide rev. D STERRAD® 100 Sterilizer 2-9