M9/M11 Sterilizer Door Motor 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 illustrations show only the components that affect the Door Motor System. Refer to the following page for detailed descriptions of the Door Motor System.
Model Range -020 thru -022, -033, -034
|
Model |
M9 -020 thru -022, -033, -034 |
M11 -020 thru -022, -033, -034 |
| Serial Number | All | All |
The Door Motor System automatically opens the sterilizer door when the Vent Mode is complete.
All electrical current is supplied thru the two high-limit thermostats on bottom of chamber. Refer to: Power Up Mode for further detail.
Display Panel
When the Door Motor System is activated, the display panel will show:
Door Motor / Door Motor Switch
For the first 30 seconds, line voltage is supplied directly to the door motor. This causes the motor to run, rotating the cam and linkage downward.
As the cam mechanism rotates, the motor switch closes. After 15 seconds, the current to the door motor flows thru the closed door switch. The cam continues to rotate causing the linkage to lift the door latch mechanism and open the door.
When the cam reaches the bottom of its travel, the door motor reverses direction. When the mechanism reaches its original position, the motor switch is opened. This stops current flow to the motor and the motor stops.
Door Switch
The status of the normally open door switch reflects the position of the door. Ex. Door open = Switch open.
Model Range -040 thru -043
|
Model |
M9 -040 thru -043 | M11 -040 thru -043 |
| Serial Number | All | All |
The Door Motor System automatically opens the sterilizer door when the Vent Mode is complete.
All electrical current is supplied thru the two high-limit thermostats on bottom of chamber. Refer to: Power Up Mode for further detail.
Display Panel
When the Door Motor System is activated, the display panel will show:
Door Motor / Door Motor Switch
For the first 30 seconds, line voltage is supplied directly to the door motor. This causes the motor to run, rotating the cam and linkage downward.
As the cam rotates, the door motor switch closes. After 15 seconds, the current to the door motor flows thru the closed door motor switch. The cam continues to rotate causing the linkage to lift the door latch mechanism and open the door.
When the cam reaches the bottom of its travel, the door motor reverses direction. When the cam reaches its original position, the door motor switch is opened. This stops current flow to the motor and the motor stops.
Door Switch
The status of the normally open door switch reflects the position of the door. Ex. Door open = Switch open.
