Hi I would say that for that specific use, you can't, the elevator comes with the engine calculated for the necessary force, if you lose part of your force, doing the same job, the engine will inevitably burn Anyway, in the manual section of the motors and windings forum, this is how it is done, although I repeat, it can only be done if the engine will be exposed to a much smaller load than the original https://www.yoreparo.com/es/motores-electricos/manuales/5773814/convertir-motor-trifasico-a-monofasico Cheers