Thread: Painting exhaust fan. What do you use?

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In theory, I you mount the fan as a pusher, in the clean air indeed, then you should be good. The fan motor could only cause ah ignition if it were placed in the outfeed air path.

Induction motors are not supposed to spark, but the control switch can.

Most of your box fans have open cage motors, it lets the motor run cooler. Explosion proof motors are fully enclosed, and are designed to run hotter

Originally Posted by firebird77clone

In theory, I you mount the fan as a pusher, in the clean air indeed, then you should be good. The fan motor could only cause ah ignition if it were placed in the outfeed air path.

Mounting the fan as a "pusher" creates some challenges with a large bank of inlet filters to keep the dust down without restricting flow. Not that it cannot be done, but exhausting the air is much more efficient, just like pulling air through a radiator works better than pushing.