If you’ve been around this hobby for a few years, you know that Ron Francis Wiring is one of those companies that “never sleeps”—they always seem to come up with something else we need. This fan controller is a perfect example; it turns each of your twin fans on at two different temperatures, and allows the second fan to cycle on-and-off at any higher temperature you set. Or, it can be used with a two-speed fan to operate the same way—starting the fan on Low at the selected temperature, and then switching to High at the other temperature you’ve selected.
Here’s why it’s such a good idea: It reduces the load on your electrical system when the fans kick on and off, by splitting the demand into two stages (some electric fans really draw some serious amps). You’ll avoid blown fuses caused by those amp surges, so your fans will keep operating—and you’ll keep smiling.
The temp sensor is simply tightened under an intake or water pump bolt. There is an adjustable operating range from 140 degrees to 230 degrees, and the controller also has an A/C request (although this feature does not have to be used) that will turn the cooling fan on whenever the A/C compressor engages. As usual, they thought of everything.
The dial-in is very simple for the “technically challenged”—no Electronic programming is involved. The whole kit is only $129.95, and is featured in Ron Francis’ newest Wiring Encyclopedia and tech manual, which, as always, is free for the asking,