M9/M11 Sterilizer Sterilization Mode Theory of Operation

WARNING

To prevent risk of shock always disconnect power before removing covers or performing any service procedure.

WARNING

Some procedures require power to be connected with covers removed. Line voltage is present. Use extreme caution to prevent electric shock.

The illustrations call out the components that affect the Sterilization Mode. Refer to the dropdowns for detailed descriptions of the Sterilization Mode.

Refer to: Power Up Mode for components that are continually monitored during all modes.

Model

M9/9D -020 thru -022, -033, -034

 M11/11D -020 thru -022, -033, -034
Serial Number All All

M9/M11 Sterilizer Sterilization Mode Theory of Operation

During the Sterilization Mode, the temperature and pressure parameters for the selected cycle are maintained for the required time.

All electrical current is supplied thru the two high-limit thermostats on bottom of chamber. Refer to: Power Up Mode for further detail.

During the Sterilization Mode, the display panel will show:

M9/M11 Sterilizer Sterilization Mode Theory of Operation

The temperature sensor inside chamber and pressure sensor on Main PC Board monitor the temperature and pressure conditions inside the chamber throughout the Sterilization Mode.

Based on readings from the temperature sensor and pressure sensor, the heating element is cycled ON / OFF to maintain the required temperature and pressure for the selected cycle.

Throughout the Sterilization Mode, voltage is supplied to the normally open vent valve. When energized, the vent valve closes. This prevents water from flowing back into the reservoir thru the vent valve.

The air valve is closed (no voltage) throughout the entire Sterilization Mode. This prevents pressure from escaping the chamber.

Model

 M9 -040 thru -043 M9D -042 M11 -040 thru -043
Serial Number All All All

M9/M11 Sterilizer Sterilization Mode Theory of Operation

During the Sterilization Mode, the temperature and pressure parameters for the selected cycle are maintained for the required time.

All electrical current is supplied thru the two high-limit thermostats on bottom of chamber. Refer to: Power Up Mode for further detail.

M9/M11 Sterilizer Sterilization Mode Theory of Operation

The temperature sensor inside chamber and pressure sensor on Main PC Board monitor the temperature and pressure conditions inside the chamber throughout the Sterilization Mode.

Based on readings from the temperature sensor and pressure sensor, the heating element is cycled ON / OFF to maintain the required temperature and pressure for the selected cycle.

Throughout the Sterilization Mode, voltage is supplied to the normally open vent valve. When energized, the vent valve closes. This prevents water from flowing back into the reservoir thru the vent valve.

The air valve is closed (no voltage) throughout the entire Sterilization Mode. This prevents steam/pressure from escaping the chamber.