polyvue said:David,
Though you could leave your booster pump running without the cleaner, this shouldn't be necessary. The outlet will still act as a return of sorts once you unplug the cleaner... you can test this by turning on the main pump, leave the booster off, disconnect cleaner and place your fingers near the disconnect, where you'll feel some water flow.
Sorry, I can't answer your question about installing a timer. If you're planning on doing
this prior to vacation, try searching for topics on how to do this via the in-line TFP Google (any page, bottom left). I'm sure somebody here has done this and laid out a guide. Or perhaps a member reading this will be able to respond knowledgeably.
Greg
So I guess I would not have to worry about water freeze in the lines as I would have to for the main pump?