Exhaust Fan

J

jtfx6552

Member
For my set up, I think a fan pulling out of the "booth" will be better.

What is the easiest, cheapest way to do that without exploding?

I'm assuming a box fan or fans would not be good?
 
Can the fumes really explode?

What would you have to be spraying for that to happen?

I would think that if the fan is pulling enough air, then the airflow would be diluted enough, even if you had something like a propane leak.

But, what do I know... nothing about this stuff.
 
safest way is an explosion proof exhaust fan or install a pusher, both is best
 
unless your booth is perfectly sealed then a fan blowing in will also result in a cleaner booth. for your exploding question, explosion proof stuff is way overrated. many years ago i would spray in my garage, no fan and a propane heater going. i could not see my hand in front of my face and i am still here. probably cut a few years off my life but no explosions. but for my disclaimer....do not do it. the fan on the intake will be better anyway.
 
Something to think about....If you have a fan "pushing in" you want to have a large area for the pressure in the room to escape. A pressurized room does not have good air flow as the air become turbulant and can make overspray float around, only to then land on your sticky wet paint. A very slight pressure is O.K.

Scott
 
If you're doing this on the cheap try to find yourself 2 or 3 old forced air furnace fans, the squirrel cage style. They can usually be had for $20-$40, Hit up the local scrap yards and heating/air conditioning service companies. Set them up to push filtered air in but you'll still need an exhaust fan unless the size of your exhaust outlet is large enough to flow enough free air. Explosions are rare but they do happen and it's not just with paint, awhile back a major paint company pulled a wax and grease remover off the market because it flash fired in a booth off a static spark.
 
I have large "green house" fans on each outside wall of my booth, with the loovers that open and close as you turn fan on and off. I made my own booth and created exhaust ducts on each side of the booth on the back wall. Booth has funrnace filters in the front and works great...only down fall is it pulls lots of air, so in winter months it's hard to heat as it pulls all the heat from the rest of the shop.
 
Bob Hollinshead;13311 said:
If you're doing this on the cheap try to find yourself 2 or 3 old forced air furnace fans, the squirrel cage style. They can usually be had for $20-$40, Hit up the local scrap yards and heating/air conditioning service companies. Set them up to push filtered air in but you'll still need an exhaust fan unless the size of your exhaust outlet is large enough to flow enough free air. Explosions are rare but they do happen and it's not just with paint, awhile back a major paint company pulled a wax and grease remover off the market because it flash fired in a booth off a static spark.
Click to expand...

Could that have been the use of solvent based w&g on fiberglass or plastic?
 
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