Do not guess. Use this systematic approach to diagnose the .
To understand why scratches matter, one must first understand what the belt is protecting.
The industry generally classifies belt damage into four escalating categories relevant to "scratching": otis gen2 scratch
Polyurethane is highly sensitive to its environmental conditions. High humidity or extreme temperature swings can alter the friction coefficient of the belt's outer layer. When the belt encounters the metal sheave, microscopic slipping or "stick-slip" phenomena can occur, creating a distinct scratching, scrubbing, or chirping noise that replicates the sound of physical scratching. 4. Wear of the Sheave Liners or Grooves
Otis Elevator Company has not issued a global recall for the Gen2 scratch, but they have published several Field Service Bulletins (FSBs). Notably, addressed belt slip detection and noise. The official position is that scratching is a "maintenance-sensitivity issue," meaning regular gauge-based tensioning and groove cleaning prevent the noise. Do not guess
Because Gen2 elevators are common in high-traffic residential and commercial buildings, physical scratches on the car's interior or doors are frequent. autogeekonline.net
The is a popular type of modern elevator used in buildings around the world. Instead of using heavy steel cables, it uses flat, polyurethane-coated steel belts. These belts make the elevator ride smooth and quiet. They are a big reason why the system is used everywhere. World 1: Otis Gen2 on the MIT Scratch Platform The industry generally classifies belt damage into four
The "Scratch" typically refers to one of two scenarios:
When technicians or building owners refer to a "scratch" on a Gen2 system, they are not typically talking about a surface blemish on a decorative panel (though that occurs as well). In a professional context, the term usually pertains to three distinct areas where material is being unexpectedly worn away or gouged by contact with foreign objects or misaligned parts: the coated steel belts, the guide rails, and the door operating mechanisms.
While "scratch" is not a standard software error name, related blocking faults on the Otis Service Tool may be relevant if the scratching is caused by mechanical drag:
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.