@Bubblehead Looking for recommendations to control my inlet/exhaust fan. Looking for something I can set it something like running for a few minutes and shutting off for a few minutes and recycle back on and off again. I have a Century Dual Outlet Timer but am having problems. Seems it has 8 settings but not sure if that is enough.
Here you go. 15 minute increments.
I would stay away from the mechanical timers , they are unreliable. Look for electronical timers , a little more money but they come with great functionality
I have about 10 mechanical timers in use year-round and never have a problem with any of them. The one I linked to has a pretty great rating, too.
Something like this would give you a lot more control, probably better for your application.
I wouldn’t start and stop fans like that. It will significantly decrease the lifespan of them, as most of the wear is on startup. I would use speed controllers to vary the speed to get the constant flow/pressure you want.
@Dutchem looks like you have lots of good support here. Sorry I could not chime in earlier.
That’s interesting theory. Most of the speed controllers just eat up voltage and pull more current anyway. Which has also been linked to premature bearing failure and coil damage. I’m wondering if there’s anything solid out there suggesting one is considerably worse than other.
I have moved both to DC mixed flow fans in order to avoid it as a whole.