M9/M11 Sterilizer Vent 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 Vent Mode. Refer to the dropdowns for detailed descriptions of the Vent 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 Vent Mode Theory of Operation

During the Vent Mode, pressure is released from the chamber. The steam cools as it passes thru the condensing coil and the water is returned to the reservoir.

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 Vent Mode, the display panel will show:

M9/M11 Sterilizer Vent Mode Theory of Operation

During the Vent Mode, the PC Board stops the current flow to the normally open vent valve. This allows the valve to open and the pressure, or steam, is released from the chamber.

When the steam is released from the chamber, it passes thru the condensing coil. The coil cools the steam and returns the water back to the reservoir.

The air valve is closed (no voltage) throughout the entire Vent Mode.

The pressure sensor on Main PC Board monitors the chamber pressure as it is released. When the pressure reaches 0.7 psi (5 kPa), you will hear several beeps. This indicates the door will open in approximately 5 seconds.

Model

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

M9/M11 Sterilizer Vent Mode Theory of Operation

During the Vent Mode, steam and pressure are released from the chamber. The steam cools as it passes thru the condensing coil and the water is returned to the reservoir.

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 Vent Mode Theory of Operation

During the Vent Mode, the PC Board stops the current flow to the normally open vent valve. This allows the valve to open, releasing the steam and pressure from the chamber.

Steam and water released from the chamber is circulated through the condensing coil in the reservoir. This cools the steam and water before returning it to the reservoir.

The air valve is closed (no voltage) throughout the entire Vent Mode.

The pressure sensor on Main PC Board monitors the chamber pressure as it is released. When the pressure reaches 0.7 psi (5 kPa), you will hear several beeps. This indicates the door will open in approximately 5 seconds.