The Can Fan RK plastic tube fan is an economical backward centrifugal extractor with a durable, maintenance free plastic housing. For added protection, it is equipped with a thermal switch, which will turn off the motor in the event of overheating.
RK-W (with Temperature Controller)
These fans use a 3 speed motor with an integrated temperature controller. The target temperature is set by the adjustment dial. Once the temperature is detected above the target, it increases the speed of the fan to the 2nd speed. If the temperature increases further, the fan will step up to the highest (3rd) speed. The fan operates at the lowest speed when the temperature is below the set temperature, and doesn't turn off.
RK-S (with 4 Speed Controller)
The addition of the speed controller adds versatility. Each speed setting is factory set and calibrated to produce the most efficient output specific to each fan.
No need for extra electronic speed controllers or transformers.
Flexibility when the grower needs to make seasonal adjustments.
Convenience: increases the ability to match fans with a larger range of filters.