Field experience and manufacturer data point to several specific causes for belt surface damage. Understanding these helps with prevention.
Technicians use approved cleaning solvents and specialized brushes to remove accumulated polyurethane dust, oil residue, or dirt from the sheave grooves.
Traction is generated by the friction between the sheave and the polyurethane. A rough scratch filled with dust or oil reduces the coefficient of friction. In worst-case scenarios (high humidity, heavy load), the car may slip or drift up slightly before taking off, a known symptom of belt degradation. otis gen2 scratch
If a magnetic flux test shows wear or the scratch has slightly penetrated the surface but not exposed steel, the belt is to be .
The most critical and often the most alarming scratching events occur on the coated steel belts. Unlike conventional steel ropes, the Gen2's CSBs feature a polyurethane coating designed to protect the internal steel cables, provide grip, and eliminate the need for lubrication. A scratch on these belts is not a light nick; it is a breach of that protective shield. Field experience and manufacturer data point to several
If the inner cords are compromised, the system will automatically log a fault and, depending on the severity, safely park the elevator at the nearest landing and remove it from service until a technician replaces the belt. Inspection and Diagnostic Procedures
The OTIS Gen2 Scratch features a unique, patented design that combines the benefits of a traditional cleaning rod with the flexibility and durability of a modern, polymer-based system. The Gen2 Scratch boasts: Traction is generated by the friction between the
Schedule regular, professional cleaning of panels, which helps remove abrasive debris that can cause micro-scratches.
This comprehensive article explores both dimensions in depth, offering actionable insights for building managers and field technicians, followed by a guide for digital creators designing Gen2 simulations.
Because the Gen2 system often operates in a hoistway without a traditional machine room, the components are more exposed to building dust, construction debris, and airborne particulate matter. If a hard particle (such as a shard of concrete, drywall dust, or a metal shaving) becomes trapped between the flat belt and the sheave, the immense pressure of the elevator cab weight will force that particle into the polyurethane jacket, creating a continuous scratch as the belt moves. 2. Sheave Misalignment