ASP sterrad NX, Service & Troubleshooting Manual

Page: 31 / 126

Functional Description
3
Chamber and Shelves
The chamber functions as the container where sterilization of a load
takes place. The chamber assembly includes the chamber, electrode,
shelves, heaters with thermistors, two temperature sensors, thermostat,
and insulation.
Heaters with an integrated thermostat provide the heat input to the
chamber to maintain its temperature at a predetermined control point.
Temperature sensors are used to monitor the chamber temperature and
provide feedback to the computer to properly control the heaters.
Thermostats will cut off the power to the heaters if temperature limits are
exceeded.
The two shelves are mounted on rails and can be pulled out of the
chamber partially or completely.
Electrode
The electrode is isolated from the chamber walls, door, and shelves and
is used in the generation of plasma. The electrode distributes electrical
energy uniformly throughout the chamber causing hydrogen peroxide
molecules in the chamber to break apart and form plasma.
Feedthrough
A feedthrough conductor, which is electrically isolated from the chamber
wall, connects the electrode to the plasma power supply, which delivers
power to the electrode.
STERRAD
®
NX
™
Service Guide 31