Scratching noises can manifest in various ways, from a rhythmic scrape during travel to a high-pitched whine at the start of a journey. Here are the most frequent culprits:
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Furniture, construction materials, or carts striking the walls. Scratching noises can manifest in various ways, from
Before diving into diagnostics, it is crucial to understand the component that makes the Gen2 unique: the Coated Steel Belt (CSB). These flat belts, constructed from high-tensile steel cords encased in a durable polyurethane coating, were designed to eliminate the metal-on-metal noise typical of conventional steel ropes. The system’s gearless permanent magnet motor and sealed bearings are also designed for low-noise operation. Before diving into diagnostics, it is crucial to
A full "door track and hanger audit" should be performed annually. If a door panel is sagging, it will eventually scratch the neighboring panel. Using a feeler gauge to check the gap between telescopic doors is essential. The same goes for the roller guides; a laser alignment tool is often required to ensure they are running truly parallel to the rail face.
If you want, I can produce a printable inspection checklist or a step-by-step technician work order template tailored to your building type and traffic level.
Gen2 machines are equipped with physical guards designed to keep the belts aligned and prevent foreign objects from entering the sheave grooves. If these guards are bent during maintenance, improperly installed, or loose, they can make direct contact with the moving belt, carving a continuous scratch along its length. 4. Hardened Polyurethane Degradation