Liquid Cooled Gaseous Commercial Product - 60kW & below. 3-Day Class Hours: 8:00 a.m. - 5:00 p.m. Class ends 5:00 p.m. on last day of class Course Prerequisite: Satisfactory completion of Generac's Air-Cooled Training course required. No Laptop Required Nightly homework and exercises. Please see Power Systems Training Curriculum and Disclaimer.