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2022
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05
What are the characteristics of steel fire-resistant rolling shutters?
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Steel fire-resistant rolling shutters consist of a door frame, a door leaf frame, and a door leaf panel made from steel materials. The door leaf is filled with non-toxic, harmless, fire-retardant, and heat-insulating materials. Doors with a certain level of fire resistance are equipped with fire-rated hardware accessories.
Steel Fireproof Roller shutter Door The door frame, door leaf frame, and door leaf panel are all made of steel materials. The door leaf is filled with non-toxic, harmless, fire-resistant, and heat-insulating materials. Doors with a certain level of fire resistance are equipped with fire-rated hardware accessories.
Steel Fire-resistant rolling shutter door These doors are made from fire-resistant and flame-retardant materials, offering fire resistance, stability, structural integrity, and thermal insulation. They are primarily used at openings in firewalls, entrances to stairwells, evacuation corridors, and pipe shaft openings, thereby establishing fire compartments. Designed for general public passage, they can effectively prevent the spread of flames and the flow of smoke in the event of a fire. At the same time, they also serve as effective seals.
Steel Fire-resistant rolling shutter door The door frame should use The steel plate for the door leaf panel should be 0.8 to 1.2 millimeters thick, while the reinforcing plates should be 1.2 to 1.5 millimeters thick. If the reinforcement bars have threaded holes, the steel plate thickness must not be less than 3.0 millimeters. The doors and door frames shall be filled with non-combustible materials. The melting temperature of hardware components such as door locks, hinges, and latches shall not be lower than 950°C. Currently, the national standards do not specify these requirements. Fire-resistant rolling shutter door The size, just the requirement. Fire-resistant rolling shutter door The fire resistance rating. And others Fire-resistant rolling shutter door Same, steel. Fire-resistant rolling shutter door It’s also graded—steel. Fire-resistant rolling shutter door Its rating is also determined by its fire-resistance duration.
Steel Fire-resistant rolling shutter door The fire resistance duration shall be no less than. 1.5 hours—only when this requirement is met can it be referred to as... Fire-resistant rolling shutter door Class A Fire-resistant rolling shutter door Internally, perlite is typically used, along with small amounts of refractory materials such as vermiculite fireproof boards and foam door core panels. MC-compliant materials, etc., are also used. Fire-resistant rolling shutter door The thickness is generally 50mm.
Grade B steel Fire-resistant rolling shutter door The fire resistance duration shall not be less than 1.0 hour, Fire-resistant rolling shutter door The hardware accessories used in the upper part also need to be fire-resistant hardware accessories. Typically, this level... Fire-resistant rolling shutter door An entry door commonly used for home decoration.
Class C steel Fire-resistant rolling shutter door The fire resistance duration shall not be less than 0.5 hour. For Level C Fire-resistant rolling shutter door The attachments must undergo fire-retardant treatment to meet the specified fire-resistance rating.
Common faults in the operation of fire-resistant rolling shutters:
One, Fireproof The rolling shutter isn’t working: First, check the power supply to see if there’s electricity when the rolling shutter’s power is turned on. If there’s no power, perform an online inspection of the power supply section. If there is power, the power indicator light on the shutter control box should remain green at all times. If the indicator light isn’t lit, we’ll need to check the transformer inside the control box. (The transformer’s resistance is 270 ohms.) Has it burned out? If the power indicator light is flashing green, it could indicate that the power supply section is experiencing phase imbalance. If there’s no power loss in the main power supply, the issue might be that the backup power board in the control box has burned out. Alternatively, it’s also possible that both the residential power board and the backup power board have burned out.
2. The power supply must not be pushed up when idle: Before closing the switch, first check whether the backup board has any issues and measure the resistance of the backup board’s output wires. Around 300 ohms. If there’s an open circuit or a short circuit, check whether the motor’s contactor has burned out, or whether the spare board has been damaged.
3. The operation buttons are not functioning properly: First press the stop button, then the reset button, and finally the up/down buttons.
Four, The indicator lights on the power control box or button panel are all lit. At this point, check whether the button wiring is short-circuited or whether one of the buttons might be stuck. If neither of these issues is present, it’s possible that a chip on the power motherboard has failed; in this case, you should replace the chip. Be careful not to install it backward. (That is, mouth to mouth.)
Fire-resistant rolling shutter door
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