Treatment timesYou can set this ozone generator machine to turn on and offautomatically to meet your needs using Interval mode and timermode together. This way this ozone machine will run from 15 to 180minutes every 12 or 24 hours.NOTE ā For your comfort ozone production is delayed for 10seconds after starting the ozone generation. Machine willbeep every second during these first 10 seconds of delay.RecommendationsTreatments in low temperatures may take longer time.Ideal treatment temperature is above 68 degrees F (20 C).Place the unit as central as possible in the treatment area.Place the unit as high as possible for better efficiency as ozone isheavier than air.When treating vehicles, or areas with low air volume, open windowsor ducts slightly to allow fresh air to get inside.Open all surfaces within the treatment area so that theycan get exposed to the ozone gas. Wardrobes, cabinet, etc.INTERVAL MODECome back after thetreatment time plustwo hours so that theozone may dissipate.Press button Interval,machine will work at12H intervalPress button Intervaltwo times, machinewill work at 24Hinterval.