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Explosion proof fan installation - from a lost sole http://www.luthiersforum.com/forum/viewtopic.php?f=10101&t=37894 |
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Author: | Rick Hubka [ Tue Oct 02, 2012 12:18 pm ] |
Post subject: | Explosion proof fan installation - from a lost sole |
If you would be so kind, I am looking for pictures and idea's for explosion proof fan installations. What works? What would you change if you could do it over? First... Hello again gang! After moving to a location with no workshop for 3.5 years, I am almost back... The new 20'X32'X9' home shop in Chemainus BC (on Vancouver Island) is ready for paint this weekend. Tools, Jigs and stuff are coming out of storage the following weekend. My new 16" VS Jenny explosion proof fan arrived yesterday for the future 6' X 5' corner spray paint booth. Switches and lighting are mounted outside the paint room. Top half of the paint room will be that clear ribbed greenhouse material. I will be filtering air in and out. It came with a seperate aluminum shutters. I'll probably add an outside insulated door for the 6 colder months. May install a small 18" mini roof over the fan and window on that wall to eliminate problems with our 4 winter months of perpetual rain. You can see my rough 20" opening for the fan in the drywall picture below. The height of the booth room below the fan is 6' 8". My thoughts are to lift a hinged plywood hatch (20" X 50") up to redirect the fan input to the booth ceiling. With the hatch down it can vent the whole shop when needed. Yikes! I also need to finish building my Joe's 4X4 CNC machine I started 3.5 years ago. That was for carving necks, fret boards and.... Hope to become active again in this and your CNC forum section again by years end. Thanks |
Author: | Barry Daniels [ Tue Oct 02, 2012 12:39 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
It sounds like you are mounting the fan so it pulls air INTO the shop. If that is correct, I would advise reversing this. My Graingers XP fan had an optional louvered cover that opened automatically when the fan was turned on. |
Author: | Rick Hubka [ Tue Oct 02, 2012 12:48 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
My mistake/typo. Yes, it will be an exhaust fan blowing out. TKS. |
Author: | Rod True [ Tue Oct 02, 2012 2:59 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Hi Rick from a fellow BC'er. I have my fan mounted down near the floor so it draws air and overspray down, not up into my face or onto the guitar body (if hanging while spraying). I also have a filtered opening in my spray booth near the ceiling so that the air is drawn in from up high and the air flow again goes down so I don't get overspray hanging around in the air. Maybe this isn't an issue for fans mounted up higher? As you can see, I've boxed my fan in and have a filter (basic furnace filter, 20"x20") to catch the overspray. On the outside of the shop, I had a welder friend make up a basic hood with mesh covering the opening so critters don't get in, spiders do but no big deal, they find a way anyway. Here's a few pictures. Only thing I would change is the size of the booth, I'd make it bigger ![]() ![]() ![]() ![]() |
Author: | SteveSmith [ Tue Oct 02, 2012 3:40 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
I based mine on Rod's unit and his recommendations (thanks Rod). It vents up through the roof since my shop is in a brick building and I didn't want to cut through the wall. I have not tested it yet but hope to as soon as my challenge guitar is ready. I'll see if I can find a photo. Basically a box with filters, fan looks like Rod's and is at the bottom of the duct blowing up. Attachment: NewSprayBooth.JPG
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Author: | charliewood [ Tue Oct 02, 2012 4:25 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Howdy Rick,, Sounds like your on track w/the fan and all! So Im just dropping in a hello, from another BC'er and fellow Islander - Sooke Cheers Charliewood |
Author: | DannyV [ Tue Oct 02, 2012 9:13 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Mine sits about 3 1/2' off the floor. Pretty much shooting right into it. A filter would not be a bad idea to keep the blades from getting covered with overspray. The one thing I wish I had done was put in a bathroom type fan in my spray boot to keep the stink moving outside while it is drying. The 16" is a little much to run while drying. I turn it on from time to time. Make sure you have LOTS of make up air available. They move a lot. Are you going to the instrument makers show in Errington Rick? It could be fun. Not far from you I think. Cheers, Danny |
Author: | Rick Hubka [ Tue Oct 02, 2012 9:14 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Thanks for the replies! Barry. I suspect the louvers would stay mostly open when the fan is running but I could get the auto motorized louver option if I spend another $80. Rod. I guess that's where the word "down draft" comes from. Dam! I could build a 20" wide 10" deep plywood vent right below the fan all the way to the foor and use a small door in front of the fan to redirect it down. Might lose a bit of efficiency but it would do the trick. That would place the input opening and filter at floor level. I really want to use the fan for dual purpose to vent the shop when hot or welding too. Steve. Wow that's one big round flex vent! You just confirm I need "down draft". Charliewood and Rod from BC. Nice! 3.5 years ago I was in Calgary and don't miss it. Before that I was in Winnipeg and miss it even less. Ya really need a dehumidifier here in BC for winter though. I have a few tops I braced 4 years ago and the humidity here in winter has them totally go distorted if I'm not careful. I picked up a nice Whirlpool dehumidifier a few weeks back at Canadian Tire for 1/2 price and have installed a through the wall drain for it in this shop. Thanks for the pictures and help. I'm switching to "down draft" now. |
Author: | Arnt Rian [ Fri Oct 05, 2012 8:17 am ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
I'm finishing building my new spray booth just now, its an extension to my detached garage. I spray mostly nitro, and since I live in the sticks and don't have to worry about complains from neighbours about the fumes (or the design of the thing!), I can do pretty much as I wish. I decided to keep the fan outside, and built this bird house type box for it. At the opposite end of the booth, I have a filtered air intake of the same dimension. I'll show some more pictures when everything is done; I'm waiting for my new compressor, and I'm working on the air plumbing, filter frames, lighting etc. ![]() |
Author: | SteveSmith [ Fri Oct 05, 2012 8:45 am ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Arnt, what size fan are you using? |
Author: | Arnt Rian [ Fri Oct 05, 2012 10:23 am ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Its about 14 in. |
Author: | SteveSmith [ Fri Oct 05, 2012 12:16 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
I was just curious - be interesting to see how they perform when we get them up and running. My fan is a 12" unit and I'm also going through about 10 feet of 12" duct so you should get better performance. I'm hoping mine will be satisfactory, at least. |
Author: | Barry Daniels [ Fri Oct 05, 2012 1:51 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
The duct and the bend will really restrict the flow. It's best to have no duct work like Arnt's setup. I used to have my fan installed in a window and it blew like mad. When I moved I had to vent it through the ceiling and roof which required four feet of duct and a transition from 14" to 12" diameter to fit between the joists and rafters. I am probably getting half the amount of flow from it now. |
Author: | SteveSmith [ Fri Oct 05, 2012 8:02 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Yep, I know the numbers on the ductwork and that's why I'm hoping it will be satisfactory. The alternative is to cut a hole in the brick in the side of the building - I don't want to do that if I can make it work. Good news is I have 2 gentle 45 degree bends and the entire duct is the same size. The roof vent is a large low restriction type usually found in commercial installations. We'll see. |
Author: | charlton [ Tue Apr 16, 2013 1:01 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Arnt Rian wrote: I'm finishing building my new spray booth just now, its an extension to my detached garage. I spray mostly nitro, and since I live in the sticks and don't have to worry about complains from neighbours about the fumes (or the design of the thing!), I can do pretty much as I wish. I decided to keep the fan outside, and built this bird house type box for it. At the opposite end of the booth, I have a filtered air intake of the same dimension. I'll show some more pictures when everything is done; I'm waiting for my new compressor, and I'm working on the air plumbing, filter frames, lighting etc. ![]() Hey Arnt, Any updates? I'd love to see your new spray digs. ![]() Cheers, Charlton |
Author: | charliewood [ Thu Apr 18, 2013 1:46 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Rick " I picked up a nice Whirlpool dehumidifier a few weeks back at Canadian Tire for 1/2 price and have installed a through the wall drain for it in this shop." I had to buy a dehumid too, however there were too many drafts in my garage shop.... so winterization was in order, sealing drafts in windows, installing & insulating 2"x2" framed, plywood covered floors(less tool mishaps!!!)... also spray foamed an entrance to the crawlspace leading to underneath the house... draft seal the doors... and rerouted the stove exhaust from leading into garage to an outside wall.. [before anyone asks, the stove exhaust was routed there when the garage was still a carport - later to become an enclosed garage - later to become my shop...] long story short 50% humid heaven which seems to be just fine for my purposes.... now if I could just get out there more..!!! cheers charliewood |
Author: | Darryl Young [ Thu Apr 18, 2013 1:56 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
If you could find an explosion proof squirrel cage style fan they are more efficient when operating at higher pressures. the higher pressure is needed to overcome losses in the 90deg turn and ductwork. In other words, a squirrel cage fan with the same CFM rating would likely move more air the ductwork than a standard fan design. Just a thought. I have a squirrel cage fan from a downdraft vent-a-hood system I'm saving to use in a spray chamber. anyone know if they are usually explosion proof? I doubt it, but I likely won't be spraying nitro but it would be nice to have that option for repairs etc. |
Author: | Chris Pile [ Thu Apr 18, 2013 3:05 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Don't forget about explosion proof lightning in your spray booth... |
Author: | Chris Ensor [ Thu Apr 18, 2013 9:22 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Where do you guys get your explosion proof fans? |
Author: | Tom West [ Fri Apr 19, 2013 7:48 am ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Chris Ensor wrote: Where do you guys get your explosion proof fans? My question also especially for the folks in Canada. Tom |
Author: | Alex Kleon [ Fri Apr 19, 2013 7:59 am ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Tom West wrote: Chris Ensor wrote: Where do you guys get your explosion proof fans? My question also especially for the folks in Canada. Tom A good place to start would be to ask at a custom kitchen shop. Most would be using lacquer, and if they do their own finishing, would have to have a proper spray booth. You could also ask at a custom finish/restoration shop. They could tell you where they got their gear from. Alex |
Author: | SteveSmith [ Fri Apr 19, 2013 9:23 am ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
I found mine on ebay |
Author: | charlton [ Thu Apr 25, 2013 11:32 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Thanks for the update, Arnt. That looks pretty amazing. Looking forward to the first batch of guitars that make it out of your new finishing area. ![]() Cheers, Charlton |
Author: | Steven Odut [ Fri Apr 26, 2013 7:51 pm ] |
Post subject: | Re: Explosion proof fan installation - from a lost sole |
Tom West wrote: Chris Ensor wrote: Where do you guys get your explosion proof fans? My question also especially for the folks in Canada. Tom Princess Auto used to sell them for about $500. The last few times I've been there I haven't seen any in stock, so you might have to ask or they might have stopped carrying them. |
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