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WARNING

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Forum topic by roman posted 47 days ago 841 views 0 times favorited 25 replies Add to Favorites Watch
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roman

1106 posts in 786 days


47 days ago

I thought I would share this so that no one might have it happen to them.

I have a big 5 HP air compressor that drives almost everything in the shop including but not limited to my air sanders, drilling, driving, mechanical tools, and my spray booth finishing equipment. It cranks out 21 cfm and albeit the compressor itself is old, she’s quiet and dependable. When I run to the house for lunch or head out the door to purchase supplies I most often leave it on and for 7 years this has been the case.

On Saturday afternnon I was sanding down a table when I heard a short squeel that seemed like it came from the compressor…..then another…...then a big sqeel and POOF, the electric motor burst into flames. I was quick of the mark and grabbed a fire extinguisher and in seconds the fire was out but not before filling the shop with acrid smoke….deathlike in its toxic smell….........

Had I not been in the shop…...........it probably would have burnt to the ground.

I am happy to say that after purchasing a new motor ($$$$CHING CHING$$$$$$$$$) that my 1962 Brunner compressor runs once again….quiet, powerful and am once again back in business.

Assuming that dust gets sucked into electric motors I bet its a good idea to take some comprssed air and blow the dust out on a regular basis…....it might not juts save your shop…...it might save your life!

Cheers

-- http://www.furnituremann.ca/

View dustygirl's profile

dustygirl

767 posts in 621 days


47 days ago

Very helpful info.Thanks Roman.

-- Dustygirl..Hastings,Ontario.. How much wood can 1 gal chuck if 1 gal can't cut wood?

View Kindlingmaker's profile

Kindlingmaker

1469 posts in 419 days


47 days ago

Dust does get everywhere… Thank you

-- Never board, always knotty, lots of growth rings

View mski's profile

mski

360 posts in 873 days


47 days ago

Wow, scary, All WW tools should have a TEFC motor to address the sawdust issue

-- MARK IN BOB, So. CAL

View Bob #2's profile

Bob #2

3034 posts in 914 days


47 days ago

Roman, it must be our week for compressors.
Last night I was draining my 6 hp gas driven hot dog compressor for the day and I opened one tank and partially opened the second one.
The butterfly valve was bent and now spinning instead of turning. I put a wrench on it but no luck
So, I just set it back down on the ground to drain and POW! out shoots the valve and digs a 4 inch hole in the ground.
I was just lucky I set in down seconds before or I would be talking like a girl right now.

Lesson here?

I knew it was bent and in need of replacement but I kept using it ” one more time”

Glad you too were able to doge the bullet with your motor.

Bob

-- A mind, like a home, is furnished by its owner

View okwoodshop's profile

okwoodshop

158 posts in 67 days


47 days ago

my compressor is pretty noisy so i built a little shed outside away from the dust for it but I need to make a better switch to turn it off when i go in for the night. Glad you were there to stop the blaze.

-- Duane,matt_megan@twlakes.net

View a1Jim's profile

a1Jim

16598 posts in 469 days


47 days ago

Glad you were there Roman, scary for sure.

-- Jim from Heirloom Woodshop Southern Oregon

View Bob #2's profile

Bob #2

3034 posts in 914 days


47 days ago

You have me thinking of installing a shut off timer in my shop for this.

Bob

-- A mind, like a home, is furnished by its owner

View Donna Menke's profile

Donna Menke

103 posts in 1158 days


47 days ago

Similar occurrence with my 36 year-old band saw with the 50 year-old motor. I was happily sawing away at nothing too strenuous when I smelled something like an electrical short- then smoke seeping out from behind my homemade base. By the time I unplugged it and pulled it away from the wall the smoke was billowing and – as you stated- acrid as the depths of hell. I took the Fein vacuum that I use for most of my dust collection and sucked up the smoke. The motor was fried and I replaced it with another used motor that was conveniently in the way in the shop anyhow. The band saw works like a charm now. It could have been dust- but I suspect that in this case (my base is mostly enclosed plywood) it was just old age. What should we expect from a 50+ year-old lawnmower motor.

-- "So much wood. . .so little time!" www.woodworks-by-donna.com

View herg1's profile

herg1

30 posts in 605 days


47 days ago

I’ll bet that most of us have “things” that are left plugged in every night when we leave the shop. I know I have an oscillating fan that runs year round which reduces the rust problem in my shop. I will add that to my monthly list of cleaning as I really have not thought of doing that to this piece of equipment. Thanks for the head-up.

-- Roger1

View Fireguy's profile

Fireguy

28 posts in 128 days


47 days ago

There is a ceiling mount extinguisher that has a fire sprinkler type head on it that is designed to go off automatically at high temp to suppress a car fire in a garage, might be something worth looking into. I saw it in the handyman magazine awhile back.

Alex

-- Alex

View reggiek's profile

reggiek

705 posts in 162 days


47 days ago

Wow…thanks for the post….I’ve left my shop compressor on sometimes for various reasons….I will now shut it off when out of the shop….I do blow off the motors and my tools after every use though – its just obsessive compulsiveness on my part…

-- Woodworking.....My small slice of heaven!

View TopamaxSurvivor's profile

TopamaxSurvivor

2998 posts in 568 days


47 days ago

Most motor problems start with a worn bearing in my experience, but the insulation does break down over time. Any electrical device connected to power, even small batteries, is a potential fire. I had the flash on my 35 mm camera burn up several years ago. I was outdoors, fortunately. I smelled the unmistakable smell of electrical fire. I couldn’t figure out where it was coming from. All of a sudden the flash on my camera started to smoke. I turn it off, it didn’t burst into flames but I suspect that was the next move for it ;-)) The batteries were stuck in the compartment. When I finally go them out, they were swollen and starting to rupture. If I had put it away in the closet and forgotten to turn it off, it might have burned the house down :-((

After our Aerostar spontaneously combusted, I did a little research. Fords starting fires is one of the best kept secrets in corporate America. I have almost exclusively owned Fords all my life, but I would never sleep in a house with a Ford parked in the garage again!!

-- Debt is nothing more than the 21st Century's form of slavery.

View Fireguy's profile

Fireguy

28 posts in 128 days


47 days ago

Check this out, not all the expensive.

Ceiling Mounted Unmanned Fire Extinguisher

-- Alex

View Bob #2's profile

Bob #2

3034 posts in 914 days


46 days ago

Alex, that is a really good idea!
I ‘m going to get a couple here.

Bob

-- A mind, like a home, is furnished by its owner

View sidestepmcgee's profile

sidestepmcgee

136 posts in 617 days


46 days ago

before my pancake oilless goes dead it seems I get a sqeel and followed by a boom if I let go so far ,normally unplug it in time but it always makes the hair on my neck go straight.scary stuff,glad everything is well.

-- eric post, tallahassee FL

View cowdog80's profile

cowdog80

32 posts in 39 days


39 days ago

No flames, but mine crashed out under similar circumstances not too long ago.

Eric
Greensboro, NC
Woodworkers Store

-- http://woodworker.com

View roman's profile

roman

1106 posts in 786 days


39 days ago

time and material pricing

replace/recharge fire extinguisher…........................... 25 bucks
time…................................................ ................. 1 1/2 hr

- remove motor, belts and collect electrical data,
phone shopping/pricing ........................................ 3 hourss
- first trip to electrical supplier and purchase…............. 3 hourss
- Return trip to get motor as it was not a
stock item …........................................................ 1 hour
- new motor…..................................................... 650 bucks
- emergency same day shipping charges…............... 250 bucks
- time to put everything back together
,testing, adjustment, replace all old wiring,.............. 6 hours x 2 guys

16 hours at 20 bucks and hour ….............................. 320
material…............................................................... 1,000
taxes

saving the shop….................................Pricelss.

-- http://www.furnituremann.ca/

View stefang's profile

stefang

1643 posts in 227 days


39 days ago

After watching my neighbor’s house burn down after a lightning strike in August 2008, the prospect of a house fire really scares me. Luckily no one was hurt. He just moved in to the rebuilt home this July. I think the workshop is the biggest threat when it comes to fire, because it’s easy to forget things. I sometimes forget to turn off my air compressor, so I appreciate this warning and am going to try my best to do better. Thanks for the post.

-- Mike, American in Norway

View mics_54's profile

mics_54

435 posts in 363 days


39 days ago

Bob I bought an old compressor once at a garage sale. I took it home and a few days later decided to refurb some parts of it. I didn’t even concider that it had been used in several years. there was no cord on it. I thought I would check to see if any rust or crud was in the tank before using it so I wrenched the drain petcock loose and began unscrewing it with my hand….you already know what happened then. It also blew a hole in the ground about 8” deep. My hand hurt but it still works ok. Nobody saw me do it so it’s all good!

-- Dan, Sterling Alaska, http://sullcon.homestead.com/ Before you criticise some one, walk a mile in their shoes...then you will be a mile away and you have their shoes!

View jeffreythree's profile

jeffreythree

37 posts in 68 days


39 days ago

I used to work at a company where all of the compressors were outside in little sheds near each building. I asked why, and they said it is better to have a shed burn than the whole building. Also a lot quieter inside.

-- My Etsy store: http://jtcwoodcrafts.etsy.com

View blockhead's profile

blockhead

292 posts in 201 days


22 days ago

My shop is wired to the house service panel. When I come in from woodworking, I flip the breakers to the shop. I like to err on the side of caution.

-- Brad, Oregon- Wood, it's what's for dinner.

View skeezics's profile

skeezics

198 posts in 611 days


22 days ago

I always turn the breaker for the compressr off when I leave the shop. My shop is piped with airhose because it is versitile and cheap. Broke a hose once in the middle of the night and the compressor ran till it fried the head. 1500 bucks later I was back up and running. bought a much better compressor head and a new 5HP motor so I got an upgrade out of it but nowadays it stays off when I aint out there!

-- hey honey! watch this!

View CessnaPilotBarry's profile

CessnaPilotBarry

1263 posts in 595 days


21 days ago

I read Roman’s post and realized I need to revisit some of my habits.

My shop is in my basement, so a fire would be beyond bad…

Thank you!

-- - Please help keep Lumberjocks an enjoyable escape by refusing to participate in political discussions. Simply spit out the bait and ignore the thread...

View SnowyRiver's profile

SnowyRiver

3330 posts in 373 days


20 days ago

Thanks for the heads up Roman.

-- Wayne - Plymouth MN

View 8iowa's profile

8iowa

592 posts in 654 days


20 days ago

Always remember…........Murphey’s Law is constantly in place.

-- "Heaven is North of the Bridge"

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