Interlock systems for clean room doors

Strict procedure to control the material and personal flow in controlled contamination environments are extremely important. Interlocking systems and access control systems are the solutions.

The system we propose is completely integrated into our doors, Pass-Box or Pass-Trolley. It is composed of: double red / green traffic light with emergency release button, covered by an easy to clean polycarbonate cover; an electric lock or an electromagnet, with an integrated door status, placed on the upper side inside the jamb, which mechanically prevents the door from opening; a multiple management control unit (from 2 to more doors) that can be programmed according to the different procedures, modes or timings required. Description of a standard 2-port interlock: at rest with the doors closed all the traffic lights turn green. When one of the doors is opened, the mechanism blocks the other door via the electric lock and the traffic lights change from green to red light. If the door remains open for a long time, a timed alarm warns the door not to close. Once the door is closed, the system returns to rest. In emergency situation, the button on the traffic light allows you to force the system and open the door even if the traffic light is red. This is called “green logic”. Interlocking systems for ex-proof environments (Atex) are also available.