To minimize downtime, choose machines with a one-touch self-cleaning function. High-end models often include a pasteurization cycle, which allows the machine to be cleaned less frequently (every 7-14 days instead of daily) while maintaining safety. Ensure the supplier provides a comprehensive wear-parts kit, including food-grade O-rings, gaskets, and lubricant. Digital control panels with 'low mix' alerts are vital to prevent the cylinder from freezing up, which can lead to expensive mechanical failure.