Thread: DC enclosure and ducting set up

Interesting you should mention the shotgun noise as I already have short air blasts regularly going off to release condensed waster from 3 points in the compressed air line. Two are outside the shed and one is inside. The blast times are adjustable currently set for 500 ms every hour but only when I am in the shed and need compressed air access.The noise mine make are not shotgun level but it is still loud and could frighten someone not expecting them I've had mine running for over amount and am slowly getting used to them. I have also added small exhaust silencers to the outlets that make a significant difference to the volume but this would affect the pressure needed to clean a filter so probably could not be used in that application.

In terms of DC filter cleaning, should anyone decide to go this route another good reason to locate DCs in their own noise reducing chamber.

Interesting what you say about the cleaner chap and cleaning the PFs.
All filters have a finite life time and eventually need to be replace but PFs made out of stiff materials usually need to be replaced sooner than most folks think.

I think I have always thought of the PF as a piece of equipment I bought, like a machine, instead of something which blocks up and wears out, like a filter. Now it seems obvious I need to replace it.<br><br>Any way, I put a test point in the top of the PF and took a reading of about 3.54" WC so a bit higher than the 3.22" WC with the test point between the impeller and the filter, as Bob suggested.<br><br>I also took the chance to take some sound readings. I'll put the original readings in brackets for comparison. These readings are done with the DC located in the workshop (not the enclosure) just to get a comparison with the original configuration.&nbsp;<br><br>Standing next to the DC: 81/82dB (84)<br>Corner of rock wall and green shed(about 2.5 metres outside the shed near fence line): 67/68dB (75) Note the DC enclosure wasn't there originally, so now I am standing sort of behind the enclosure with the phone held up above the roof level.<br>Same position with roller door closed: 59/60 (65)<br>9 metres from shed roller door, door open: 63/64 (not measured before)<br>Same with door closed: 51/52<br><br>It's good to see levels have all dropped, I'm surprised by how much difference the roller door makes. The ambient noise level in the shed is about 38dB and that seems silent.<br><br><br>

Ooops, did something wrong and it all got a bit messy, sorry.

Not your fault re formatting
There’s been a couple of posts like that where the format instructions haven’t worked

Thanks, Lappa, I was looking at the preview window and clicked on the photo. It took ages to load so I clicked the back button and it was like that. Then I pressed submit hoping it would go back to normal.

Finished off the baffle box and put the DC in place. I still haven't cut the outlet hole in the cladding for the vent but I ran the DC for an initial noise test. With the door open it was 85 dB, and with the door closed 69/70 dB. Still haven't properly sealed the bottom of the door and I could tell there was noise coming from there, but very happy with this initial result. It was very comfortable noise wise, standing right next to the door.

Looks nice and tidy - good job.

Every time I see the DC stand the ply triangular support for the impeller motor stand looks like a little mountain of sawdust and I go but then I remember.

God noise values too.

Thanks Bob, haha yeah I did exactly the same thing with the bracing when I looked at the photo.

Excellent work. It’s a good feeling when it all comes together.

Originally Posted by Lappa

Excellent work. It’s a good feeling when it all comes together.

Thanks Lappa, it's a bit of a relief too after all the effort and expense, well worth it.

I've started doing some work on the blast gates. I have to admit it has been doing my head in making the rocker type. I used the plans provided by Bob in the blast gate thread, made some 3mm MDF templates and got started.

All the pieces have been cut with hand power tools so a bit rough and ready but finally seems to be coming together. The rocker is pretty hefty but I like that, and I'm just using up some of my scrap.

The sockets are all glued in and drying overnight. I used a polyurethane glue on all but one socket, which was a bit loose fitting so I used liquid nails for that one. Anyway a few boring photos of progress.

Spent yesterday cleaning up the glue from the inner faces and filing/sanding back to flush. Then finished construction of the sliders, much easier than the rocker type. I made them M&F so pipe on one side and socket on the other.

Made a good start on the ducting today. Spent a fair bit of the morning just getting all the stuff out of the shed so I would have room to get the duct in above the storage shelf. The first branch is to the TS, the second to the P/T and the third will come across to the BS. The end will stay capped off for now and I hope to one day get a belt sander so duct will continue straight on to that when/if it happens.

Have you sealed the joints on the outside bends? I have a similar setup and recently found water around my DC.