Temperature Control and Energy Management
number of seconds it takes your fan to get to full-speed (by obser- vation) and divide that number into 30 to obtain the recommended maximum number of starts per hour. Two-speed motors cycling be- tween half and full speeds permit a commensurately greater number of control cycles.
Variable frequency drives, of course, provide the ultimate in both tempera- ture control and energy management and can be easily retrofitted to your system. Please discuss this with your Marley representative.
14
