Thread: Extractor update

don't close all the work shop doors with it on, you might implode the shop space

They are an excellent unit, worked at a place with one once, it was a beast.

am yet to plug it in. been a busy weekend.

I am still trying to comprehend the suction power.

7000m3/hr at 2800pa (almost 300mm of water!) at 3000rpm is impressive, if I get a VFD and have the motor at higher RPM I can get more suction out of it,.....will I suck the whole shop into the extractor? lol

finally got around to remove the old extractor, move in the new, wiring, and modify existing ducting to suit new.

I have noticed significant extraction improvement, especially with narrow passages/small connections. not so much improvement at the larger ports say 150mm, but the chips moves a lot faster than before.

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Old extractor being removed.

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Fine dust accumulated within the dust bags. 100mm thick over 2.4m x 1.2m

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First time using my engine crane like this. couldnt have done it without it.

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Not ideal it will do. the inlet size is 315mm.

Have a confession to make.

I didnt check the fan rotation before, when I wired it up, the extractor was "extracting" so I thought I got it right first time, it was very loud though, like an airplane taking off, I thought its what it is... no way it's wired wrongly cos it would be like a fan blowing the other way, right?

used my wide belt sander over the weekend. clearly something is not right. thought I better rewire the 3 phase connection.... switch it on... noise probably reduced by 5db, and the huge improvement of the extraction, BOY. I have to be very careful about what I put close to the extraction hood, it almost sucked up a 19mm wrench, almost like a vacuum but with a nozzle being 150mm dia.

Takes a big man to admit he messed up. Good reminder to everyone to double check everything.

Pete

Originally Posted by Albert

I didnt check the fan rotation before, when I wired it up, the extractor was "extracting" so I thought I got it right first time, it was very loud though, like an airplane taking off, I thought its what it is... no way it's wired wrongly cos it would be like a fan blowing the other way, right?

Your not an orphan Albert....

Video - "What Happens When a Centrifugal Fan Runs in Reverse"? - LEV CentralLEV Central

Originally Posted by NeilS

Video - "What Happens When a Centrifugal Fan Runs in Reverse"? - LEV CentralLEV Central

what the 'ell is he talking about? He lost me at the word fan.

Think I need a strong drink.

Originally Posted by Tonyz

what the 'ell is he talking about? He lost me at the word fan.

Think I need a strong drink.

..... : ~}

Originally Posted by NeilS

Your not an orphan Albert....

Video - "What Happens When a Centrifugal Fan Runs in Reverse"? - LEV CentralLEV Central

I walked into a Men's Shed and they said the neighbours were complaining about the new DE and as soon as they started it I knew why as a clearvue has a very distinct whistle when it is running in the wrong direction of rotation.