[martin417]

Duty cycle means the percent of time that the unit may be operated. Ifyou have 20% duty cycle, it means that in any given 10 minute period, the motor may run a total of 2 minutes. Or, out of any given hour, it may run 12 minutes. It has to do with cooling.

I wouldn't recommend running it for 12 minutes and then off for 48, it would probably overheat.

The main point is that the motor should be off about 80% of the time.