The fireproof shutter door adopts the control method of two steps down, and the alarm and action signal should be sent to the fire control room respectively, and emergency control measures should be taken in the special grade fire shutter. When the rapid fire shutter in the smoke detector announced before the signal, fire control room is on the active alarm plate should be announced the acousto-optic signal, active record time fire, fire site, fire prevention with zheng curtain door received signal, reduce to scheduled height, and appeared in fire control work station of indoor tray reflects the status of the rolling door in place. Rapid fire shutter in position indicator is on fire after rolling steel door motor, gear drives the limiter screw rolling gear, collision block along the screw axial movement, affects in the micro switch on the corresponding position, through to the shutter, a signal of power supply.

    If the active alarm part of the operating table is on, and the corresponding shutter door indicator light is not bright, it indicates that there are some problems in the electrical control of this fire door. Should be enabled immediately, the shutter door on the operating table controls the button to reduce to middle or bottom. If after the operation has not been able to make the shutter door lower azimuth indicator light, should send someone to the spot check the condition. It can be seen that the shutter door control of the fire control room should be reduced to the middle, bottom and ascending control buttons, and the indicator light with the middle and bottom position should be provided. Appearance check door rail, door fan has deformation, card resistance appearance, manual button is outstanding lock.