Valves for the A3 emendament , on new or old installation, possibility of installation on any type of power unit.
METHOD OF USE AS AN BLOCK ELEMENT IN AN EMERGENCY
1. The power supply to the valve of the DS device is not necessary for the ascent of the system while it must be powered first (300-500 ms) and after (1-1.5 s) of any downward maneuver.
2. The power supply may need to be kept stopped with the doors open for checks on the pressure switches in the control unit.
3. The power supply must however be interrupted (activation of the DS device), with open doors, as soon as an uncontrolled movement is identified.
4. The DS device must be operated before the cabin moves 200 mm away from the floor.
THE DS DEVICE CAN BE USED AS A REDUNDANCY ELEMENT IN DOWN OF THE CONTROL UNIT. THIS INCLUDES AUTOMATIC MONITORING BY THE CONTROL PANEL.