Paint in spray booth extraction duct

IMG_1446 by Andrew Jessett, on Flickr" alt="Sp2" />

At least this proves it works!

It it good that you are using brushless fan motors.

The overspray will only be a problem under certain circumstances:

• A combination of volume and density of the spray
• Its' Volitility and Flashpoint.
• and a Spark or ignition source.

It also depends what you are spraying, any enamel/lacquer/cellulose based paint or thinner will carry more risk.

So Replace Filters more often.

Furnace Filters or cooker hood filters will deal with the bulk of the overspray. I front mine with a 'fleecy' gauze-like filter materiel & have 0-1% deposit on ther fans after 4 years (replace filters as needed).

Thank you for you advice! I  wonder if its my filter. I did put some new ones in that I bought in bulk a few weeks ago. They are spray booth filters but perhaps they are not good enough? I bought a massive roll of it as well! I will monitor and see if it increases... I did spary a lot of red LP Tamiya paint with my 5mm needle. I wonder if it was just so much paint the filter couldn't handle? 

DaddyJ

Thank you for you advice! I  wonder if its my filter. I did put some new ones in that I bought in bulk a few weeks ago. They are spray booth filters but perhaps they are not good enough? I bought a massive roll of it as well! I will monitor and see if it increases... I did spary a lot of red LP Tamiya paint with my 5mm needle. I wonder if it was just so much paint the filter couldn't handle? 

 

I am surprised at the amount of paint residue. I use a furnace filter in my homemade booth and get very little residue in the duct. Is it possible you have a leak in the filter mount?

It looks to me like the paint is getting around the seal as others mentioned. You can probably also double layer your filter. Really there isn't all that much paint there though, you should have seen the fans in my ancient 1/1 shop and as well as a couple others I worked in, we never blew up. It was just the way of the day back in the early 1970s.