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OMMS stands as the industry's only usage-based preventive maintenance delivery system.
The Otis Maintenance Management System — OMMS — measures your equipment's actual usage, and combines this information with a wealth of statistical data to customize the ideal maintenance program for your elevators.
The Critical Combination
OMMS uses a counter to record an elevator's 'starts', and establish its level of usage. But other factors impact a system's maintenance needs as well. An elevator's environment affects the way it reacts to usage. A part's age can affect its condition no matter how much use it receives. And different components need servicing at different times. OMMS analyzes all four factors to devise a maintenance schedule tailored precisely to your system and situation.



  • Downtime reduced by combining service visits
  • Non-productive service time minimized: mechanics arrive prepared, with the right information and tools
  • Task prioritization: the system schedules work according to need
  • OMMS updates an elevator's history after every service call
Product Information OMMS
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