Page 96 of 110 Pages
14. DOOR SAFETY SYSTEM
The door safety consists of two safety means:
14.1 Electric door locking system
Door closing: the user pushes the door towards the chamber frame, a switch
located on the frame indicates that the door is in locking position and
switches on an electrical cylinder that closes and locks the door. Two micro
switches indicate that the door is locked, and stops the command to the
electrical cylinder.
Door opening: The user presses a key to open the door. The control system
operates the electrical cylinder that unlocks the door. When the door is
unlocked, a micro switch indicates that the door is unlocked and stops the
electrical cylinder.
14.2 Pressure switch
The autoclave is equipped with a NC 10 kPa (1.4 psi) pressure switch that is
connected to the chamber. When the pressure switch senses pressure of
10 kPag (1.4 psig) it disconnects the electrical command of the electrical
cylinder to avoid accidental opening of the door.
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