• RUNS MOTOR LOADS ONLY AT 2/3 RATED HP • HOW TO SIZE: The largest motor on your machine must fall within the minimum and maximum range of the converter Do not order a larger unit or Heavy Duty model thinking it will give more horsepower • WHEN TO USE HEAVY DUTY: Heavy starting loads (lathes, flywheel driven equipment,etc.) Instant reversing, frequent starting, jogging Air compressors (motor pulley must be reduced by 1/3 in diameter) • HEAVILY LOADED EQUIPMENT: For pumps, fans, blowers, direct-drive compressors, or equipment requiring greater than 2/3 of its rated HP, you must USE A PHASE-A-MATIC ROTARY CONVERTER.