Hebei Hong'an Fire Door Co., Ltd. is one of the most reliable manufacturers and suppliers of inorganic fire curtain roller door in China. If you're going to buy durable inorganic fire curtain roller door made in China, welcome to get free sample from our factory. All customized products are with high quality and low price.
Exclusive Protection Key Points for Inorganic Fabric Curtain Surface
The inorganic fabric is made of flexible fibers, vulnerable to sharp objects, high temperature and oil stains. Key maintenance requirements are as follows:
1.Do not allow forklifts, steel pipes or hard heavy objects to collide with the curtain surface, as permanent holes may be formed.
2.If oil stains or chemical contaminants adhere to the curtain, wipe gently with a neutral damp cloth. High-pressure water washing and strong alkaline cleaners are prohibited.
3.For underground parking lots and damp basements: ventilate regularly by opening windows to avoid water absorption and mildew of the thermal insulation cotton inside the curtain, which would impair heat insulation performance.
4.It is forbidden to hang advertisements, wires or heavy objects on the curtain surface. Long-term tension will cause stitching cracks.
5.Keep open flame and electric welding operations far away from rolling shutters. Sparks will burn through the inorganic fabric and create fire protection weak points.
Maintenance & Inspection Specifications for Inorganic Fire Rolling Shutters
Annual Comprehensive Inspection
1. Actual Test of Passive Thermal Release Device
Cut off the main power supply, heat the 73℃ fusible element with a hot air gun, and verify that the shutter fully descends smoothly under its own weight within 60 seconds without jamming. Replace the entire release mechanism immediately if the test fails.
2. Full-Stroke Durability Test of Complete Unit
Run full up-and-down cycles for no less than 5 times. Check the synchronization of double-layer curtain surfaces for no deviation or abrasion damage. The qualified descending speed ranges from 7 m/min to 9.5 m/min.
3. Fire-Resistant Layer Inspection of Curtain Surface
Unseam the edge wrapping of the curtain surface, inspect the internal aluminum silicate thermal insulation cotton and aluminum foil reflective layer for dampness, pulverization or missing sections. Special attention shall be paid to water seepage and soaking issues for damp underground parking lots.
4. Smoke Tightness Test
After the shutter is fully closed, use a 0.1 mm feeler gauge to measure gaps between the bottom bar and ground, as well as between curtain surface and guide rails. The test passes if the gauge cannot be inserted. Replace sealing strips or adjust guide rails if gaps exceed standard limits.
Monthly Routine Inspection
1. Appearance and Curtain Surface Inspection
2. Guide Rail Cleaning
3. Local Control Function Test
4. Thermal Release Device Inspection
5. Cabinet, Motor and Chain Visual Check
6. Warning Signs
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