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Tips for Mounting a Flex-a-lite Fan Controller

2013 August 6
by therealcoleq

Most of the Flex-a-lite electric fans come with either and Adjustable Thermostat Controller our Variable Speed Controller. While we've done a segment on wiring them, one of the common questions we get is where is the best place to mount them?

There are a couple of things to consider when choosing a location:

  • You will need it to be close enough to the radiator for the temperature probe to reach.
  • You want to keep it away from extremely high heat. Typically, on the radiator support or high and forward on an inner fender panel is good.
  • You will also want to mount it high in the engine bay to keep it away from road debris and excessive water that can splash up as you drive.
  • Finally, they are water resistant, but not waterproof. Do not mount them in a way that allows water to pool up around the terminals.

Flex-a-lite fan controllers are designed to take the place of relays, and offer you the ability to adjust what temperature the fan or fans turn on at, ranging from approximately 160-240 degrees Fahrenheit. We match the proper controller with our fans to accommodate the amp load, and we provide either a fuse or breaker. If you want information about choosing the right controller for your application, check out this article.

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4 thoughts on “Tips for Mounting a Flex-a-lite Fan Controller”

  • John Otterbein
    John Otterbein August 22, 2013 at 4:34 pm

    I just installed a #160 fan. It cools great! The problem is the thermostat
    control does not work. As soon as I turn on the key the fan turns on. Also the top mounting bracket covers the control knob. There should be a clearance hole.

    • therealcoleq
      therealcoleq August 23, 2013 at 1:05 am

      We're happy to replace the controller if it is defective. There are some troubleshooting steps that we would like to go through with you first, though. Please give us a call at 800-851-1510. Thanks!

  • Kyle
    Kyle September 17, 2013 at 5:23 pm

    I have a flex-a-lite variable speed controller. It's mounted on the frame but facing the radiator. It's about 2 inches from the surface of the radiator top corner. Is this a wrong place to mount the controller? Is it going to be too hot there in this configuration? How hot is too hot? Is the back of the unit the problem vs. the front?

    • therealcoleq
      therealcoleq September 17, 2013 at 11:53 pm

      It sounds like your mounting location should be okay. We see problems with heat if it is mounted very close to exhaust headers and some times if it is mounted to the radiator sidetank.

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