Knowledge sharing: matters needing attention in the self-inspection of fire-resistant rolling shutters

The installation location and fire resistance grade of the fire shutter door should meet the design requirements; the upper part of the fire shutter door should have a box or other fire protection measures that can prevent the spread of fire.

The power supply for electric fire-resistant rolling doors should be fire-fighting power; the cross-sectional area of u200bu200bpower supply and control wires, insulation resistance, wiring and protection tube materials should meet the requirements of the regulations. The overcurrent protection setting value of the power supply device of the fireproof rolling door shall meet the design requirements.

Because the electric fireproof rolling door is equipped with manual buttons on both sides (except the side that cannot be operated by personnel) to control the raising, lowering and stopping of the electric fireproof rolling door, and the function of the fireproof rolling door should be improved after the fireproof rolling door is lowered and closed during a fire, and The fire shutter door should be able to automatically restore the original closed state after being lifted into place.

The electric fire shutter door with automatic alarm control system shall be equipped with automatic closing control device, and the fire shutter door used in the evacuation passage shall be controlled by a detector to descend in two steps or to descend after a delay of 1.5m～1.8m. Bottom function; the roller shutter used to only play a role of fire separation should be lowered to the end in one step, the manual quick release device, the arm force of the manual quick release device of the fire shutter door should not exceed 50N; the fire control room should have a forced electric fire shutter door lowering function (emergency operation Device) and display its status; the opening and closing device of the fire shutter door installed on the evacuation passage should be able to manually and mechanically lift to lower the closed fire shutter door after a fire is cut off, and the fire shutter door can be restored to its original closed state by its own weight. The manual lowering traction force of the manual fireproof rolling shutter door is not more than 150N.

The repeated positioning accuracy of the fireproof rolling shutter door should be less than 20mm.

The gap between the seat plate of the fireproof rolling shutter door and the ground is not more than 20mm; the distance between the connection point of the curtain plate and the base is not more than 300mm.

The distance between the embedded steel parts of the guide rail of the fireproof rolling door is not more than 600mm.

There should be obvious operation signs at the opening and closing device of the fire-proof rolling shutter door to facilitate the operation and maintenance of personnel.

The verticality of the guide rail of the fire-resistant rolling door is not more than 5mm/m, and the total length is not more than 20mm.

The parallelism of the center lines of the two guide rails of the fireproof rolling door is not more than 10mm.

The height difference between the two ends of the fireproof rolling shutter door seat plate is not more than 30mm when it is raised and lowered.