One, are fire doors kept open or closed?
Fire-resistant doors should be kept open or closed regularly, and the decision depends primarily on their type.
Fire-resistant doors are generally divided into two types: one is an open-stay fire door, and the other is a closed-stay fire door. Open-stay fire doors are typically kept open, and automatically close in the event of a fire. If they are kept closed, this can hinder evacuation and escape. Closed-stay fire doors are typically kept closed, and frequent opening can damage them, thereby reducing their fire-resistant effectiveness.
Two, how to distinguish between frequently opening fire doors and frequently closing fire doors
1、Different states
Common fire-resistant doors are designed to be kept open in normal operation, with the operating system automatically closing them only in the event of a fire. These types of doors are commonly found in corridors and passageways in public areas.
Self-closing fire doors are typically closed in normal conditions and can be opened when personnel are passing through. They effectively prevent the spread of smoke and fire, and also help to slow down the fire's progress.
2、Different prices
Swing-open fire doors are generally more expensive than inward-closing fire doors.
3、Composition differs
A typical fire door consists of components such as the door leaf, door frame, door closer, and sealing strip.
In addition to the above components, outward-swinging fire doors also require the installation of a sequence switch.
4、Different control methods
A manually operated door can be controlled by a manual switch. A manually closed door does not require an electric or automated control system; instead, it uses a closing device and a sequencer to close, making it a mechanical type.