I have never used TWRP Manager - if I want to use TWRP I boot into recovery and use it. I don't know whether this app would let you wipe the cache partition without rebooting the phone in the process (which is what the similarly-named ROM Manager would do).
Since I've never used it I also don't know what list of devices it's presenting you with. But if you can't find yours on there, even a codename, it may not be supported.
There are plenty of app cache cleaners in the Play Store, some of which can clean on a schedule. Every few minutes sounds crazy though, unless the plan is to see how quickly you can run the battery down without using the phone. Clearing the cache partition is what Mr Lucky suggested you'd need something like TWRP Manager for, and I can't offhand think of another way of doing that.