Current AVDX fans use two different motor sizes, one for 8'-18' and one for 20'-24'. Previous AVDX motors used three different motor sizes: one for 8'-12', one for 14'-18' and one for 20'-24'. Available diameters are in increments of 2', except for 22'. If you are unsure what size motor you have, please contact Technical Support with your order or serial number.
Diameters can be freely exchanged in the motor's diameter range, but you cannot use 20’ or 24’ blades on a motor meant for 8’-18’, or vice versa. Diameter changes outside of the motor range will require a new fan. Diameter changes within the motor range will require VFD reprogramming. Please contact Technical Support for assistance.
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