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OfflineFlordcram
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Registered: 03/01/18
Posts: 40
Last seen: 3 years, 9 months
Finishing up flow hood build
    #25535220 - 10/13/18 07:14 PM (6 years, 3 months ago)



Thanks community for annals of info on building a flow hood. I’m so excited to install my hepa tomorrow and see if I managed to figure everything right. I have to say, the hardest part was finding a blower that fit the specs for my 2ft X 2ft filter. i tried and failed to find a suitable salvage furnace blower near me, so I  bought an ebm-papst D2E146-HT65-94 blower online for about $270. I’ll let y’all know if I get laminar flow and if this centrifugal fan is worth buying. All told, is spend roughlyt $500 on all the parts.

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Invisiblesandman420
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Registered: 06/17/04
Posts: 5,387
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Re: Finishing up flow hood build [Re: Flordcram]
    #25535999 - 10/14/18 06:05 AM (6 years, 3 months ago)

I googled your blower and it shows it is 230v, can you confirm this? I don't think that router speed controller is compatible with USA 2 hot wire 230v.


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- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

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Invisiblesandman420
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Re: Finishing up flow hood build [Re: sandman420]
    #25536014 - 10/14/18 06:18 AM (6 years, 3 months ago)

when I click on the pdf for details it shows the D2E146-HT65-49 as 115v maybe you have that one? Looks like on the 4th speed wiring it i will do about 460 cfm at 1.2" w.g. which is just slightly fast. Probably don't even need the speed controller.


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- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

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OfflineFlordcram
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Registered: 03/01/18
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Last seen: 3 years, 9 months
Re: Finishing up flow hood build [Re: sandman420]
    #25536436 - 10/14/18 10:31 AM (6 years, 3 months ago)

This is the one I got: https://www.zoro.com/ebm-papst-blower-582-cfm-115v-32a-1800-rpm-d2e146-ht65-94/i/G1119413/?q=G1119413#specifications
From what I understand, the ht65-94 is a 115v. Most of the spec sheet info out there on it was for the ht65-49, which is its predecessor and out of production. But their curves, speeds, etc. are all the same from what I understand.

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Invisiblesandman420
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Re: Finishing up flow hood build [Re: Flordcram]
    #25536450 - 10/14/18 10:39 AM (6 years, 3 months ago)

Ah ok, yea dial it down a little bit looks like I was off reading the graph a little and it is 527 cfm @ 1.2" w.g.

Do you know what pressure your filter rates at?


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

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OfflineFlordcram
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Registered: 03/01/18
Posts: 40
Last seen: 3 years, 9 months
Re: Finishing up flow hood build [Re: sandman420]
    #25536582 - 10/14/18 11:33 AM (6 years, 3 months ago)

I’ve got a 24*24*6 magna 1100 series 99.99% efficient filter with an initial resistance of .8 wg.

Edited by Flordcram (10/14/18 11:33 AM)

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OfflineFlordcram
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Registered: 03/01/18
Posts: 40
Last seen: 3 years, 9 months
Re: Finishing up flow hood build [Re: Flordcram]
    #25537441 - 10/14/18 05:12 PM (6 years, 3 months ago)

Update: I dropped my HEPA on its face. It’s all fudged up and gives the flow a bunch of turbulence. I’ve got to order a new one but everything else seemed to work fine. Dang, I was sooo close.

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Invisiblesandman420
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Re: Finishing up flow hood build [Re: Flordcram]
    #25537524 - 10/14/18 05:47 PM (6 years, 3 months ago)

what


--------------------
- Sandbag Tek - How To Sterilize Spawn Bags - All About Static Pressure / Pressure Drop for DIY Flow Hoods - Sandman's LC Tek-

Marijuanaut escapes earth to cultivate - Grow-room is church temple of the new stoner breed

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OfflineFlordcram
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Registered: 03/01/18
Posts: 40
Last seen: 3 years, 9 months
Re: Finishing up flow hood build [Re: sandman420]
    #25546072 - 10/18/18 12:53 AM (6 years, 2 months ago)



I ruined my filter when i dropped it while installing it, thus ruining the consistency of the flow. Though there was a bunch a turbulence when i turned it on, but I checked the pressure with a lighter. It bent at at roughly 80-90 degrees, so it has enough pressure.

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OfflineFlordcram
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Registered: 03/01/18
Posts: 40
Last seen: 3 years, 9 months
Re: Finishing up flow hood build [Re: Flordcram]
    #25621193 - 11/17/18 03:07 PM (6 years, 1 month ago)



I replace the HEPA, sealed it up and look^^^ laminar flow. Yaay!

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Offline2in1
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Registered: 11/04/18
Posts: 283
Loc: England
Last seen: 6 years, 10 days
Re: Finishing up flow hood build [Re: Flordcram]
    #25621348 - 11/17/18 04:04 PM (6 years, 1 month ago)

Quote:

Flordcram said:


I replace the HEPA, sealed it up and look^^^ laminar flow. Yaay!




Nice job homie, looks awesome.
Need to build myself one of these!


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