Midmark M9® -05x / M11® -05x Sterilizer Fan System Theory of Operation
To prevent risk of shock always disconnect power before removing covers or performing any service procedure.
Some procedures require power to be connected with covers removed. Line voltage is present. Use extreme caution to prevent electric shock.
The fan may run continuously when running consecutive cycles.
The illustration below calls out the components that affect the Fan system. Refer to the dropdowns for detailed descriptions.
|
Model |
M9 -050, -053 | M11 -050, -051, -053 |
| Serial Number | All | All |
The fans reduce heat inside the enclosure by circulating air between the chamber and the cover.
Digital Temperature Sensor
The digital temperature sensor is located on the Main PC Board. It controls the ON/OFF function of the fans.
When the temperature exceeds 45 °C (113 °F), the fans turn on. When the temperature drops below 41 °C (105.8 °F), the fans turn off.
The fans run regardless of the state of the temperature sensor during the Heating phase and then turn off at end of cycle (if no Drying, then at end of Venting).
Prior to Venting, the bottom fans will shut off for a few minutes.
Fans
12 VDC is applied to the fans causing the fans to run.
The top fan blows air out of the enclosure. The bottom two fans blow air into the enclosure.
