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InvisibleThUmB pRiNt
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36vdc Filter Fan unit d/c to a/c power supply Problem Solved *edited* 8/17/19 * 1
    #26131947 - 08/12/19 08:24 AM (4 years, 5 months ago)

Im in the laminar flow cabinet building stage of my hobby, but someone suggested instead of making a laminar flow cabinet I could just find a FFU (Fan Filter Unit) from eBay with the same specs as a laminar flow cabinet that way I will have less work to do to set it up, it’s cheaper, which means I can easily buy a bigger unit and they are less bulky than laminar flow

This is a Righteous idea!

These units have everything we need except a pre filter, these FFU’s usually have their own self contained fans and filter.


G

After a long night of shopping around and review countless FFU’s I accidentally chose this dc powered unit instead of the 1 a/c powered unit they have left.

BUT... I hope there’s a cost effective way to power to this because the unit that runs on a/c power’s shipping cost is just as much as the unit... $250 so if I have to buy that unit I will be spending about $300 more than I spent on the dc power unit.

Soo how can we run one ☝️ of these on ac power?

Do these already come with a power supply that converts ac to dc?

Thanks a million

Anyone reading this please feel free to ask any questions here or you can pm me.

I originally wrote this up looking for help but have since then solved the issues I faced with the help of a couple fellow Shroomerites which means THIS WAS NOT ORIGINALLY A WRITE UP OR A GUIDE but you can still get all the info you need and want if you look hard enough or if you ask.

Thanks you all for reading and for helping, those of you that helped...

Updates!!!



Im almost done, I still have to add a potentiometer to be able to regulate the fans speeds since the pre filters added too much sp.

Thanks for all the help to everyone that pitched in, i wouldn’t have been able to do it without you guys!

10/17/19 Update!



Before this the fans did not blow hard enough because the pre-filters I installed added too much StaticPressure.

Now the FFU is up n running with variable speed and definitely blowing hard enough!!!

The little aluminum cylinder on the back of the unit inside that open box is the potentiometer nob it’s around half speed, maybe a tan higher.

I took the entire filter off and found a good spot to drill the hole for the potentiometer Nob to slide through. I purposely put it so that it would come out of the unit meanwhile still inside one of the boxes on the back to protect it.

I have yet to use it for a session but I did run it for a good 10-15 min and it’s a dream come true!



Edited by ThUmB pRiNt (10/17/19 10:02 PM)


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26132304 - 08/12/19 01:29 PM (4 years, 5 months ago)

I just remembered Something that had a 36 volt...maybe it's my printer?..No, it's 24 volt. So if you have a junk shop you might try that ave'.


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132340 - 08/12/19 01:54 PM (4 years, 5 months ago)

How many Watts do you need?



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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132486 - 08/12/19 04:03 PM (4 years, 5 months ago)

I don’t see that anywhere on the info I was provided, unfortunately.


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26132572 - 08/12/19 04:59 PM (4 years, 5 months ago)

My signal is so slow I didn't see the 4.2 Amps but wit that and the equation: Volts x Amps = Watts, we know that 36 volts x 4.2A = 151.2 Watts, so if you decide that it's more economical to splice diodes into your household electric supply wire to the device you'll know what diodes to shop for e.g 36 volt 160 watts = 16 x 10 watt Diodes if I'm not mistaken, equaling @ $150


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132614 - 08/12/19 05:28 PM (4 years, 5 months ago)

I think I found some possible solutions...

A power supply ...

Specs
Related
Accessories
154.8W 36V 4.3A Single Output Switchable Power Supply

36 Volts @ 4.3 Amps
Features

AC input range selectable by a switch
Withstand 300 VAC surge input for 5 seconds
No load power consumption <0.5W
Miniature size and 1U low profile
High operating temperature, up to 70°C
Protections: Short circuit / Overload / Over voltage / Over temperature
Cooling by free air convection
Compliance to IEC/EN 60335-1 (PD3) and IEC/EN 61558-1, 2-16 for household appliances
Operating altitude up to 5000 meters
Withstand 5G vibration test
High efficiency, long life and high reliability
LED indicator for power on
100% full load burn-in test
3 year warranty

Or

150W Single Output Switching LED Power Supply


36 Volts @ 4.2 Amps

Features:
Universal AC input / Full range (up to 295VAC)
High efficiency 91%
Protections: Short circuit / Overload / Over voltage / Over temperature
Built-in active PFC function
Cooling by free air convection
OCP point adjustable through output cable or internal potential meter
Suitable for LED lighting and moving sign applications
IP67 design for indoor or outdoor installations
Compliance to worldwide safety regulations for lighting
3 years warranty

Or something along those lines

What do you think?


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132618 - 08/12/19 05:30 PM (4 years, 5 months ago)

Here we go $16

You'd better p.m Koraks for a second opinion. link


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132640 - 08/12/19 05:43 PM (4 years, 5 months ago)

Quote:

Buster_Brown said:
Here we go $16

You'd better p.m Koraks for a second opinion. link





Who’s that?


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26132751 - 08/12/19 06:45 PM (4 years, 5 months ago)

A wise man who can check my figures. How much are those power suppliers?

Oh, yeah $45, looks like a good deal :thumbup:


Edited by Buster_Brown (08/12/19 07:11 PM)


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26132994 - 08/12/19 09:49 PM (4 years, 5 months ago)

Even better yet...

$19.99

154.8W 36V 4.3A Single Output Switchable Power Supply

36 Volts @ 4.3 Amps


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133168 - 08/13/19 02:14 AM (4 years, 5 months ago)

Yeah, the mistake in my calculations was overlooking the AC to DC inversion, so those DC power suppliers would be the way to go, plus maybe a fuse if you were so inclined.


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26133209 - 08/13/19 03:46 AM (4 years, 5 months ago)

Quote:

Buster_Brown said:
Yeah, the mistake in my calculations was overlooking the AC to DC inversion, so those DC power suppliers would be the way to go, plus maybe a fuse if you were so inclined.




Even though I purchased this FFU, I will still be building a laminar flow cabinet...

...

And

...

I’ll be raffling it off in the marketplace...


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133217 - 08/13/19 04:06 AM (4 years, 5 months ago)

How many $10 tickets will you expect to cover shipping etc?


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26133233 - 08/13/19 04:43 AM (4 years, 5 months ago)

They are gonna be $20-$25 a ticket plus the winner and I split the shipping.

Im still working out a few things like the fact that i haven’t got all the materials yet so I’m not sure of the total cost of the project so I’m not sure how many tickets I have to sell.

Ive experiences a series of beautiful events and some blessing have materialized for me and not I would like to share the blessing meanwhile creating creatively on a project that I will also embark on myself.

I decided to do this when as I researched the parts I want for my flow cabinet all the integral parts to build a smaller unit than the one I want for myself just happened to jump out to find me and at a reasonable price too, which is great because I’m this field many companies hike their prices through the roof.

So this is by no means a “FREE” giveaway, more like a chance to save a lot of money time work and you’ll be helping out a fellow Shroomsrite Brother in needs out with some monetary help do to me not having worked for 6 months due to unforeseen completely luck of the draw medical issue.

I’m looking for a way to occupy my newly freed up time while helping others and myself out at the same time and having a tons of fun while doing it.

What do you think about the idea ?

Idk yet if I should split the shipping with the winner or not.

I mean getting a really nice flow cabinet for just the cost of shipping and a $20-$25 ticket sounds amazing to me and I would participate in and win that raffle.


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Edited by ThUmB pRiNt (08/13/19 05:58 AM)


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133463 - 08/13/19 09:09 AM (4 years, 5 months ago)

Refining your knowledge base while serving the public interest sounds like an admirable endeavor.

Records are the glitch in my own process, finding notes from 20 years ago on various topics can be exasperating.


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Invisiblekoraks
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26133467 - 08/13/19 09:15 AM (4 years, 5 months ago)

Don't hook anything up directly to mains supply (using diodes or whatever). Some kind of galvanic separation between mains and any device in your home is advisable for safety reasons. In this case, just shop for any run-off-the-mill switch-mode power supply. I did a quick search on Banggood to see what pops up and it seems that 36V will be easy-peasy.

https://www.banggood.com/36V-180W-AC-DC-Switching-Power-Supply-Board-High-Power-Industrial-Power-Supply-Module-p-1111658.html?rmmds=search&cur_warehouse=CN Small and cheap, but you would be running it at pretty much max. capacity, which means you will probably have to upgrade the coolers on the active components (the aluminum bits jotting out from the device) and it may have a shorter lifespan than expected at your power level. Hence, it may work in a pinch, but I wouldn't put my money on it in the long run. It'll run hot and will require additional cooling in order to make it last. The same goes for the 4.3A unit you found.
https://www.banggood.com/LCD-110220V-0-36V-15A-480W-Regulated-Switch-Power-Supply-Switching-Power-Supply-Transformer-p-1323740.html?rmmds=search&cur_warehouse=CN Will provide more than enough power; actively cooled by the looks of it, but a bit more costly.

Similar devices can be found on AliExpress or eBay; just search for '36V power supply'. In selecting one for your use, make sure it can supply AT LEAST 5A (180W) but preferably 7A or more (>250W) to give you some headroom.

Btw, I'm surprised that that thing draws so much power; I bet it's a noisy son of a bitch.


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: koraks]
    #26133607 - 08/13/19 11:04 AM (4 years, 5 months ago)

Quote:

koraks said:
Don't hook anything up directly to mains supply (using diodes or whatever). Some kind of galvanic separation between mains and any device in your home is advisable for safety reasons. In this case, just shop for any run-off-the-mill switch-mode power supply. I did a quick search on Banggood to see what pops up and it seems that 36V will be easy-peasy.

https://www.banggood.com/36V-180W-AC-DC-Switching-Power-Supply-Board-High-Power-Industrial-Power-Supply-Module-p-1111658.html?rmmds=search&cur_warehouse=CN Small and cheap, but you would be running it at pretty much max. capacity, which means you will probably have to upgrade the coolers on the active components (the aluminum bits jotting out from the device) and it may have a shorter lifespan than expected at your power level. Hence, it may work in a pinch, but I wouldn't put my money on it in the long run. It'll run hot and will require additional cooling in order to make it last. The same goes for the 4.3A unit you found.
https://www.banggood.com/LCD-110220V-0-36V-15A-480W-Regulated-Switch-Power-Supply-Switching-Power-Supply-Transformer-p-1323740.html?rmmds=search&cur_warehouse=CN Will provide more than enough power; actively cooled by the looks of it, but a bit more costly.

Similar devices can be found on AliExpress or eBay; just search for '36V power supply'. In selecting one for your use, make sure it can supply AT LEAST 5A (180W) but preferably 7A or more (>250W) to give you some headroom.

Btw, I'm surprised that that thing draws so much power; I bet it's a noisy son of a bitch.






The Calvary has arrived!!!

Thank you all for your help!

I will implement what I’ve learned!


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139268 - 08/16/19 10:46 PM (4 years, 5 months ago)

Guys it’s here





This is it, these are the guts.

The 2 bottom right black wires in that last picture labeled N24B and X1186 under them it says failure and the wire lead out of the box and are cut off so I’m not sure where they went or what they were for.

Maybe a safety shut off


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139271 - 08/16/19 10:47 PM (4 years, 5 months ago)

This box that I opened up on top of the unit, is this an ac to dc power source?

If I’m not mistaken it was connected 240 and this box here converted it to dc

I see red black and green with a yellow stripe so I’m assuming its 2 120v lines and a ground


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Edited by ThUmB pRiNt (08/16/19 11:18 PM)


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Invisiblekoraks
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139530 - 08/17/19 06:04 AM (4 years, 5 months ago)

Quote:

ThUmB pRiNt said:
This box that I opened up on top of the unit, is this an ac to dc power source?

If I’m not mistaken it was connected 240 and this box here converted it to dc

I see red black and green with a yellow stripe so I’m assuming its 2 120v lines and a ground



Doesn't look like it. Looks like a low-pass LC filter, possibly to filter out HF noise on the DC power supply. BTW, red/black is not common wiring for AC; that would be brown/blue (and yellow/green for ground). Also, your logic of '2x 120VAC cables makes 240V AC' doesn't make sense. Doesn't work that way.

The 'failure' terminals look like an output in which both terminals are connected in case of a failure of the fan/filter unit as determined by its onboard logic. They could, for example, be used to hook up a lamp to signal failure of the unit.

CN2 looks like a set of external connectors that can be used to switch the fans and regulate their speed (with an external 10k pot meter). Could be useful for you.

The area on the PCB in the vicinity of the two 6-pin fan connectors and the round inductor labeled 'in/out' in addition to the VR1 and VR2 trimpots looks like a DC-DC converter. Makes me wonder what it's intended for; I also notice that there is a '5v' indicator on the PCB; the 5V is likely used for the logic (the big square chip and its periphery) but it's not clear what the 12V is for. It's possible that the fans actually run on 12V and that individual inductor coils of the fans are connected separately to the PCB using the 6-pin connectors and that the external 36V power supply is only used to keep the current requirement manageable. In that case, it's conceivable that the unit could be supplied fairly easily using an omnipresent 12V power supply (and sufficiently heavy cables - >12A!)

Anyway, don't try to hook this up to 120VAC or 240VAC. You'll only end up making a bit of smoke.


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139539 - 08/17/19 06:30 AM (4 years, 5 months ago)

I dunno, might be simpler to bypass the spaghetti-junction and just wire the two 6amp fans directly to a DC supply. (*puts wise man back into the shoe box in the closet)


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26139553 - 08/17/19 06:49 AM (4 years, 5 months ago)

Label states 4.2 amps max at 36 volts DC but the fans are labeled "6A" each, so possibly they are 12 volt/6 amp x 2 = 144 watts at 12 volts DC


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139585 - 08/17/19 07:27 AM (4 years, 5 months ago)

OK. Black is neutral in Chinese wiring (as designated by the minus sign next to "Power source") Red is labeled +(positive) and these two go to what looks like a transformer.

With the idea that the spaghetti junction could be by-passed, we could disconnect the wires leading from the transformer look-alike then hook up the wires that lead to it to 110v AC and test the exit terminals from it with a volt meter (just like you said except the black is neutral)


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26139591 - 08/17/19 07:34 AM (4 years, 5 months ago)

Ya I know nothing to do with this I literally was just taking a shot in the dark but obviously I missed.

So glad I have you and the rest of the fam here.

So I’ve been looking up power sources, and this is what I got so far...



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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139592 - 08/17/19 07:35 AM (4 years, 5 months ago)

Which do you think is best?


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139594 - 08/17/19 07:39 AM (4 years, 5 months ago)

Follow my last post before buying anything.


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26139598 - 08/17/19 07:43 AM (4 years, 5 months ago)

I know I caught that post, but my question remains the same?

Or should I do this test with the meter first?


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26139611 - 08/17/19 07:55 AM (4 years, 5 months ago)

If we can get Wise Man to agree that Black is neutral in Chinese wiring then you could possibly omit the optional power supply.

All I know about voltmeters is that you check from the higher settings to the lower because if you're getting 36 volts and the meter is on the 12 volt scale it can damage the meter but they're as low as $7 at Amazon.


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InvisibleThUmB pRiNt
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26139634 - 08/17/19 08:17 AM (4 years, 5 months ago)

Thanks again Brother


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OfflineKwyjibo
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26140631 - 08/17/19 09:40 PM (4 years, 5 months ago)

Quote:

Buster_Brown said:

With the idea that the spaghetti junction could be by-passed, we could disconnect the wires leading from the transformer look-alike then hook up the wires that lead to it to 110v AC and test the exit terminals from it with a volt meter (just like you said except the black is neutral)



Do not connect any part of it to AC. That's not a transformer, it's an inductor and along with the capacitor next to it is a filter as koraks stated. If you just start randomly hooking up AC to things without knowing what you're doing....

Quote:

ThUmB pRiNt said:
Ya I know nothing to do with this I literally was just taking a shot in the dark but obviously I missed.

So glad I have you and the rest of the fam here.

So I’ve been looking up power sources, and this is what I got so far...




The one on the bottom of this picture should be fine, it's better to have a little headroom rather than run a smaller one at it's limits.


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Invisiblekoraks
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26140831 - 08/18/19 02:17 AM (4 years, 5 months ago)

Quote:

Buster_Brown said:
With the idea that the spaghetti junction could be by-passed, we could disconnect the wires leading from the transformer look-alike then hook up the wires that lead to it to 110v AC and test the exit terminals from it with a volt meter (just like you said except the black is neutral)



NO! Refer to my previous post and to what @Kwyjibo says above. Nothing in those photos seems to be designed to be hooked up to any kind of AC power source.

If your consider hooking the fans up to a power source directly, first determine:
* The voltage the fans are supposed to run on
* Their maximum current draw
* Which leads serve which purpose; keep in mind that these fans are connected with a 6-prong connector to their control/power supply board so you'll have to figure out which is which.
Checking these things will require further dismantling the unit to gain access to a (hopefully present) specification sticker on the fans.

Quote:

Buster_Brown said:
Label states 4.2 amps max at 36 volts DC but the fans are labeled "6A" each, so possibly they are 12 volt/6 amp x 2 = 144 watts at 12 volts DC



Given the fact that both motors are labeled as fused with a 5A fuse, they are certainly not designed to draw 6A. So we'll still have to guess how the fans themselves are powered exactly. See above.

All considered, given OP's knowledge of electronics and the power levels involved, I would strongly suggest running this unit as it is intended to: i.e. on 36V while keeping all the control logic that is currently present in place. Keep in mind that it includes several fuses that provide some protection against fuckups. You don't want to bypass these if you don't know *exactly* what you're doing, and this is evidently not the case.


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Invisiblekoraks
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26140836 - 08/18/19 02:20 AM (4 years, 5 months ago)

Quote:

ThUmB pRiNt said:
Ya I know nothing to do with this I literally was just taking a shot in the dark but obviously I missed.

So glad I have you and the rest of the fam here.

So I’ve been looking up power sources, and this is what I got so far...





ONLY the LETOUR 9.7A and ALCOVE 10A units from that selection should be considered. NONE of the other provides any safety margin and will only barely provide the necessary power, resulting in overheating and likely premature failure. Please refer to my first post in this thread.

Please take the time to carefully read and digest the things I have been saying, as I'm now getting to the point of repeating myself.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: koraks]
    #26142322 - 08/19/19 02:54 AM (4 years, 5 months ago)

Ohh wow I had post this late night and I had not noticed but I put some pictures doubles and I left some other pictures out completely.

I reviewed it all and re posted all the pics.

Thank you so for your help, I have read everything you all have told me and I will be rereading it.

I want to be sure to use the best match and you guys said it’s better to get something that is rated for much higher that what the device is going to pull for safety reasons, so does that mean I have to look for one with a high amperage rating only or should I also look form something with a different feature in specific?

So far from what I understood these are the ones I found...

What do you guys think?

                                             


Edited by ThUmB pRiNt (08/19/19 10:37 AM)


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Invisiblekoraks
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26142402 - 08/19/19 06:02 AM (4 years, 5 months ago)

The LETOUR unit still looks like the best deal for your purpose


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: koraks]
    #26142668 - 08/19/19 10:38 AM (4 years, 5 months ago)

Quote:

koraks said:
The LETOUR unit still looks like the best deal for your purpose




Would you take a gander one more time please?

Last night I posted that but I was so sleepy I posted the wrong pictures and I left some out

I just edited the post before this and it’s pics


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26142690 - 08/19/19 10:56 AM (4 years, 5 months ago)

Look, any unit supplying 36V and at least something like 7A will do the job. Choose any one that suits your budget and other requirements.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: koraks]
    #26142721 - 08/19/19 11:19 AM (4 years, 5 months ago)

Thanks, you say just get the requirements I want but Im not even sure about what requirements I even need want or can have.

That’s why I was asking, hoping someone here actually understood what they were looking at so they can tell me what would be the best one with the best features and why so that I could understand.

All of these are at a price range I am willing to pay and if you or anyone else knows of a better or the perfect power source for this application I might even be willing to pay more if it will be at least better.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26142722 - 08/19/19 11:21 AM (4 years, 5 months ago)

Also any of you interested in any Hepas?

I have 9 Hepa filters of different sizes if any of you are interested

Pm me


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26142771 - 08/19/19 11:54 AM (4 years, 5 months ago)

You might rig up a raffle for the Hepa's in the Marketplace


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26142826 - 08/19/19 12:39 PM (4 years, 5 months ago)

Quote:

ThUmB pRiNt said:
Thanks, you say just get the requirements I want but Im not even sure about what requirements I even need want or can have.




You need:
  • 36V
  • Enough current capability with some headroom as a safety margin; let's say anything beyond 6 or 7A.

Those are the requirements. Now pick a unit. I'd go for one that's reasonably cheap and won't take ages to arrive.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26142832 - 08/19/19 12:42 PM (4 years, 5 months ago)



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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26143072 - 08/19/19 03:18 PM (4 years, 5 months ago)

I was on the same page until now, was this post met for my thread? Was it to me?


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26143118 - 08/19/19 03:45 PM (4 years, 5 months ago)

Do you guys think the Redundant Function or the PFC might be needed for this application or is it irrelevant?


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26143123 - 08/19/19 03:49 PM (4 years, 5 months ago)

Quote:

ThUmB pRiNt said:
I was on the same page until now, was this post met for my thread? Was it to me?




Yeah.



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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26143212 - 08/19/19 04:55 PM (4 years, 5 months ago)

Wellllll

I did it, I pulled the metaphorical trigger!!!

I ended up getting the Alitove because it was the perfect balance of what I need price and shipping time.



I’ll have it in 2 days!

Thanks again guys and I’ll keep you posted on the delivery



Edited by ThUmB pRiNt (08/19/19 05:02 PM)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26143784 - 08/19/19 11:44 PM (4 years, 5 months ago)

That should work just fine. Keep us updated.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: koraks]
    #26143790 - 08/19/19 11:53 PM (4 years, 5 months ago)

Will do


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26145216 - 08/20/19 06:35 PM (4 years, 5 months ago)



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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26145462 - 08/20/19 09:26 PM (4 years, 5 months ago)

#2 and #3 in that picture aren't going to make it work if it doesn't work just by hooking dc voltage to the red and black wires.



On the 36v power supply you'll have terminals marked:
L This is your hot, connect the black wire from your power cord here
N This is neutral, connect the white wire from your power cord here
⏚ This is ground, connect the green wire from your power cord here
V+ This is your dc positive voltage, connect to the red wire on the fan unit
V- This is the dc negative, connect to the black wire on the fan unit

If it doesn't work after this you'll want to connect pins 1 and 5 to each other on the connector marked CN2 and that should be all you need.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26146229 - 08/21/19 12:18 PM (4 years, 5 months ago)

It has arrived!



When I get home and start tinkering I’ll chime back in.

It came with a piece a little bent, it looks completely cosmetic but how can I make sure?

I have a meter just in case


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26147263 - 08/22/19 12:25 AM (4 years, 5 months ago)



Ok it’s a little messy but basically I’m waiting on my buddy for a whip with a plug so I figured I’d ask...

The blue lines track the brown red orange yellow pink blue purple wires from the whip to the CN2 connectors

At the strip under the big board there is a ground (green w/yellow stripe) black (-) red (+)  black (failure far bottom right #1) and black (failure far bottom right #2), these 2 black wires connected to failure at one end turn to greens at the top of the pic at the connector and come out of the whip with 8 wires (2 black 2 red 2 yellow 2 green) I say whip because at the end it’s a bunch of loose wires but actually this cord was cuz.

I wanted to know if you guys know what this set of cables that goes from CN2 and from failure to the whip are for?

The other whip I know is where I connect the power source so no need to clarify that


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26147296 - 08/22/19 01:29 AM (4 years, 5 months ago)

Ignore the failure wires, you don't need them. Can't really tell you what each of the rest of the cut wires are for unless you can give a detailed drawing of where they go. It's not important either way, all you need to know is if you put power to it and it doesn't turn on connect the brown and pink wires together on CN2 and it should turn on. The brown, red and orange wires on CN2 could be connected to a potentiometer and would most likely control the fan speed but shouldn't be necessary for it to work.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26147329 - 08/22/19 02:36 AM (4 years, 5 months ago)

If you click on the picture with the colored in lines there are 2 red circles, those two pins were connected together but it’s just a short whip that goes from the board to the cut end with 8 wires(2 of these 8 wires are the 2 black failure wires)  but to take the lid off there’s no option but to unplug the pins from each other unless I cut some tie wraps.

Im not sure HOW your saying to do it or WHICH pink and brown you are saying to connect together at CN2 and it did not just turn on from me connecting the red & black coming out from the power source



I posted a clean picture as well so you can get a clear look once you get the point


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26147733 - 08/22/19 10:14 AM (4 years, 5 months ago)

My 2 Cents



Edited by Buster_Brown (08/22/19 11:07 AM)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26147749 - 08/22/19 10:28 AM (4 years, 5 months ago)

I see a brown in there but I'm having trouble locating the pink



Looks to me like Brown would be the first one on the left
And Pink would be the first one to the right of the yellow (yellow is the middle one)


Edited by Buster_Brown (08/22/19 10:52 AM)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26147781 - 08/22/19 10:51 AM (4 years, 5 months ago)

Quote:

ThUmB pRiNt said:
If you click on the picture with the colored in lines there are 2 red circles, those two pins were connected together but it’s just a short whip that goes from the board to the cut end with 8 wires(2 of these 8 wires are the 2 black failure wires)






Somebody may have to back me up on this but I believe these are the two failure wires Orange and gray.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26148135 - 08/22/19 02:49 PM (4 years, 5 months ago)

Don't these have to be spliced one way or the other?



Brown/Red for Low speed OR Orange/Red for High speed?

Surely it wouldn't work if they were disconnected.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26148216 - 08/22/19 03:37 PM (4 years, 5 months ago)

Got it!!!!

Thank you all for the help, Kwyjibo, koraks, even you Buster Brown (Even though I never understood what you were saying)

It runs now I’m tasked with building a frame for it to hold it up and to install a couple pre filters.

I have to do some calculations to find out what pre filters are acceptable without affecting performance too much.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26148246 - 08/22/19 03:53 PM (4 years, 5 months ago)

Shucks, 'twas nuttin.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26148261 - 08/22/19 04:02 PM (4 years, 5 months ago)

Once I get some wire nuts and a few other things I want to make this right I’ll remove the un needed wires and trim down the needed ones, once I do that I’ll upload pictures of the whole thing and an explanation of what to do and how to do it (Complements of my beautiful intellectual shroomerite brothers and sisters who helped me out)

I don’t have any power going to the clean room so I want to take one heavy duty gfci extension cord to that room, then...

I’m going to put a couple outlets on the frame/housing I’m going to build my FFU but I’m going to use the outlets that have the usb outlets included, I want the ones rated for higher amperage so it’s quick charging, a nice bright daylight light of some sort(undetermined so far)

Oh ya and I want to install a switch for the FFU fans and another for the light in the unit.

How would you guys wire that up, would you guys show me your wiring diagrams for that? This part from here on is simple enough for me but I know I don’t know everything and I’m always open to learn to do things a better more efficient way, I value the phamilies opinions and knowledge so I would like to know how you guys would wire it.

I’m going to start looking for the appropriate light and the rest of the materials I want.

Stay tuned for updates pics and show and tell


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26148396 - 08/22/19 05:31 PM (4 years, 5 months ago)

You probably have a spare V+ DC terminal that could be used to power some inexpensive ground effect LED's.



This is about the simplest switch for your transformer, nothing fancy, but we seem to have difficulty explaining the more pleasant applications.


Edited by Buster_Brown (08/22/19 06:06 PM)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26149546 - 08/23/19 12:53 PM (4 years, 5 months ago)

Thank you!

It worked...

And now for the pictures so far




Please excuse me for I have not yet rediscovered my drawing skills, please bare with me... but this is a drawing of somewhat how I want to set up my FFU, on the housing I build it I will set up a control panel
The top left switch would be a 120v switch that energies the ac to dc power supply then the rest is self explanatory from there. Well some what, I have to use a como of ac and dc switches or some with dual comparability.

How would you guys do this, would you do it a similar way as I plan on doing it, what do you guys think?

So these others are the pictures of the process and the last couple are showing with the red lines everywhere I cut or disconnected wire.

Then I threw away all that spare trash wire(cheap aluminum wire)

I could not for the life of me loosen by hand (I don’t have my power tools with me) the 2 screws on the far right holding the wires on the strip at the bottom of the unit, the ones for the wires attached to the 2 failure positions so instead I just trimmed them real short and put some wire nuts on them, later tucking them into the unit before closing it back up.

At the very top I decided to recycle to same pin connector that came on the board so I trimmed its wires very short, I bundled up all the unstripped and taped wires that I did not need and I put an orange wire nut on them then. I stripped the tip of the brown wire that connects to Pin1 on CN2 and the tip of the pink wire that connects to Pin5 on CN2, I attached them together with a grey wire nut and then I reconnected the pin connector to CN2...



Crossed my fingers, held breath, plugged in the unit and...

🎶

Music to my ears!!!


Edited by ThUmB pRiNt (08/23/19 01:12 PM)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26150405 - 08/24/19 05:33 AM (4 years, 5 months ago)

Opinion time once more Pham...

As far as the housing I plan on building for my FFU, should I build it the way the traditional flow cabinets we’ve all grown to know and love with the filter blowing from the back of the unit toward the worker in a forward motion

Or...

Should I build it so the the filter sits on top of the unit facing down towards the table the unit sits on?


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26150598 - 08/24/19 09:27 AM (4 years, 5 months ago)

blah blah blah


Edited by Buster_Brown (10/09/19 01:56 PM)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26192732 - 09/16/19 08:41 PM (4 years, 4 months ago)

Hello again Brother!

So you showed me how to turn on my FFU but how do I wire it to high or low ?

I want to put one switch to energize the unit and another for low setting and one for high setting (maybe I’ll just use one double throw switch)

For now I have this 16amp 125vac/10a 250vac radio shack illuminated round rocker switch number 275-0028 but it did not come with a wiring diagram.

I did however find this on line... lol did not help me any



I want to wire this switch at the incoming ac power right before the ac to dc converter basically energizing the converter with the led light on while in the in position only.

Would you be so kind as to assist me again?

Please


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt] * 1
    #26195109 - 09/18/19 06:47 AM (4 years, 4 months ago)

Quote:

ThUmB pRiNt said:FFU but how do I wire it to high or low ?

I want to put one switch... for low setting and one for high setting (maybe I’ll just use one double throw switch)






Brown/Red for Low speed OR Orange/Red for High speed





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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26195180 - 09/18/19 07:36 AM (4 years, 4 months ago)

Ohhh that’s right!!!

You had already shown me that

Please excuse my memory

Thanks again!!!


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt] * 1
    #26224705 - 10/02/19 11:50 AM (4 years, 3 months ago)

I burnt out the led before I was instructed on how to install this old switch lol

So now I am replacing that old rocker switch I had laying around for this new and much nicer Latching
Push button.



This one is also rated for 120vac/250vac but when doing this I have to put a 75k 1/4 w resistor in series with the positive pin (+)

I already have the resistors in hand and I’m ready to do this...

Can anyone guide me just to make sure I’m doing this right

Lol I would really be bummed if I burn out another led



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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt] * 1
    #26224882 - 10/02/19 01:09 PM (4 years, 3 months ago)

Looks to me like you might need to keep the relationship of the wires in the diagram in mind when hooking it up in order to connect the right wire to the positive:



Other than that it seems to me that if the switch was wired into the circuit before the transformer then you wouldn't need the resistor:



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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26224985 - 10/02/19 01:57 PM (4 years, 3 months ago)

The vendor says if connected to 110-120vac to put the resistor in series with the positive pin, keep in mind this switch a really heavy duty dc switch that can also handle/is rated for 120vac/240vac so I guess the resistor pinches off just enough for the 120vac does not burn out the tiny LED


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OfflineBuster_Brown
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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26225266 - 10/02/19 03:43 PM (4 years, 3 months ago)

Oh, Ok. Is it an LED light that you want to wire? What voltage and wattage does it require?


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26230079 - 10/04/19 05:16 PM (4 years, 3 months ago)

No the switch has an led in it.
This switch is to energize the ac to dc converter that will power the FFU


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26230244 - 10/04/19 06:26 PM (4 years, 3 months ago)

Lol I thought I knew what I was doing but I just threw the breaker

Help...

Please...
Someone...

Anyone......


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26230251 - 10/04/19 06:31 PM (4 years, 3 months ago)

Seems to me if this switch is rated 250v that it wouldn't need a resistor, and the first switch burned out because it was rated for a 12volt circuit. But I could be mistaken.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26230258 - 10/04/19 06:35 PM (4 years, 3 months ago)

Never mind!!!!

I did know what I was doing...

I just accidentally did not do what I had planned originally without noticing until now


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26230595 - 10/04/19 08:59 PM (4 years, 3 months ago)

Quote:

Kwyjibo said:
Ignore the failure wires, you don't need them. Can't really tell you what each of the rest of the cut wires are for unless you can give a detailed drawing of where they go. It's not important either way, all you need to know is if you put power to it and it doesn't turn on connect the brown and pink wires together on CN2 and it should turn on. The brown, red and orange wires on CN2 could be connected to a potentiometer and would most likely control the fan speed but shouldn't be necessary for it to work.




These instructions you gave me worked but I was just wondering if I wanted to hook this up in the high setting would I instead of connecting the Brown and Pink wire I disconnect them and then connect the Red and Orange ?


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26232554 - 10/05/19 08:48 PM (4 years, 3 months ago)

The on switch should be independent of the speed control so if you don't have the brown and pink connected it most likely won't turn on. I would just add a 10k potentiometer to the brown, red and orange wires so you have variable speed rather than just high and low.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo] * 1
    #26233980 - 10/06/19 06:02 PM (4 years, 3 months ago)

Updates!





I actually forgot to take a picture of the switch already installed on the unit...
L
But I’ll just do that next time I’m in the workshop and I’ll upload it soon.

Right now as it stands I’m only using it on the speed that it turns onto just by connecting the switch.

Before you responded I found out/verified that the brown and pink have to be connected to be on and that the speed controls where used separately...

The only thing is when I connect the red and orange it goes way way way faster... lol to the point where I think it might burn out working at that speed for too long, so I think your most recent suggestion should work much better.

Soo for the mean time I will use it at is and I’ll make some adjustments when I’m ready


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt] * 1
    #26240127 - 10/09/19 12:13 PM (4 years, 3 months ago)

Updates!!!



Im almost done, I still have to add a potentiometer to be able to regulate the fans speeds since the pre filters added too much sp.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26240283 - 10/09/19 01:18 PM (4 years, 3 months ago)

Quote:

Kwyjibo said:
The on switch should be independent of the speed control so if you don't have the brown and pink connected it most likely won't turn on. I would just add a 10k potentiometer to the brown, red and orange wires so you have variable speed rather than just high and low.




But how exactly?

The brown has to be connected to the pink for it to run, now once it’s running with the brown and pink together if I touch the red and orange it speeds up to pretty much max capacity... lol not good...

I don’t want to burn the motors out, so how do I connect the potentiometer and which potentiometer is good? There are many options under 10k potentiometer


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26240460 - 10/09/19 02:22 PM (4 years, 3 months ago)



Hmmm...Brown with pink designated as switch

And the other brown with red and orange allocated to potentiometer




Looks to me like the red connects to the center

https://components101.com/potentiometer


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26240589 - 10/09/19 03:27 PM (4 years, 3 months ago)

Quote:

Buster_Brown said:


Hmmm...Brown with pink designated as switch

And the other brown with red and orange allocated to potentiometer




Looks to me like the red connects to the center

https://components101.com/potentiometer




That’s just it, that’s what has me scratching my head...

See the pin where I connected the brown and pink, that’s the only brown there, so where is this other brown ? That’s where I’m confused


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26240628 - 10/09/19 03:50 PM (4 years, 3 months ago)

The odd man out in that cluster of five wires would be the 'other' brown wire, probably dark brown, imo


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26240633 - 10/09/19 03:52 PM (4 years, 3 months ago)

Quote:

Buster_Brown said:
The odd man out in that cluster of five wires would be the 'other' brown wire, probably dark brown, imo




Quote:

Kwyjibo said:
The on switch should be independent of the speed control so if you don't have the brown and pink connected it most likely won't turn on. I would just add a 10k potentiometer to the brown, red and orange wires so you have variable speed rather than just high and low.






Another thing is really technically I am connecting the brown and pink here where I circled with yellow high lighter and the orange and Red also come from here



Im not sure where the connector which I highlighted I green is, there is only one connector with 5 pins on it and it’s labeled CN4, I’m assuming this is where I should have made the connection but instead I made the connection at the 7 pin conector

From what I see here

pin 1= brown \
Pin 2= red.      Potentiometer
Pin 3=orange /
Pin 4=brown \
                    Switch
Pin 5=pink    /

Is this correct ?


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Edited by ThUmB pRiNt (10/09/19 09:44 PM)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Kwyjibo]
    #26240689 - 10/09/19 04:17 PM (4 years, 3 months ago)

Quote:

Kwyjibo said:
The on switch should be independent of the speed control so if you don't have the brown and pink connected it most likely won't turn on. I would just add a 10k potentiometer to the brown, red and orange wires so you have variable speed rather than just high and low.




So leaving the brown and pink connected at the seven pin connector, the yellow high lighter
I went to the 5 pin connector CN4 and when I connect pin 1 brown to pin 2 red it turns off
And when I connect pin 2 red with pin 3 orange nothin happens (yet if I connect orange and red at the 7 pin connector the fans go full speed)


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: koraks]
    #26244676 - 10/11/19 09:42 AM (4 years, 3 months ago)


Quote:

koraks said:
Quote:

ThUmB pRiNt said:
Thanks, you say just get the requirements I want but Im not even sure about what requirements I even need want or can have.




You need:
  • 36V
  • Enough current capability with some headroom as a safety margin; let's say anything beyond 6 or 7A.

Those are the requirements. Now pick a unit. I'd go for one that's reasonably cheap and won't take ages to arrive.




First of all thank you and kwyjibo your help! I wouldn’t have been able to do it without you!

Is there anything I can do for you?

I almost have this all the way up and running but I need some opinions.

So... technically I am connecting the brown and pink here where I circled with yellow high lighter and the orange and Red also come from here

https://files.shroomery.org/files/19-41/065743479-D722A3B1-4FDE-4CF5-96E5-46C5ADBB8EA2.jpg

Im not sure where the connector which I highlighted I green is, there is only one connector with 5 pins on it and it’s labeled CN4, I’m assuming this is where I should have made the connection but instead I made the connection at the 7 pin conector

From what I see here

pin 1= brown
Pin 2= red.      Potentiometer
Pin 3=orange /
Pin 4=brown
                    Switch
Pin 5=pink    /

Is this correct ?

So leaving the brown and pink connected at the seven pin connector, the yellow high lighter
I went to the 5 pin connector CN4 and when I connect pin 1 brown to pin 2 red it turns off
And when I connect pin 2 red with pin 3 orange nothin happens (yet if I connect orange and red at the 7 pin connector the fans go full speed)

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Re: 36vdc Filter fan unit a/c power supply Help needed *edited* 8/17/19 [Re: ThUmB pRiNt]
    #26245863 - 10/11/19 07:03 PM (4 years, 3 months ago)

Badass man!

So the FFU works just like a laminar flow cabinet?


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Re: 36vdc Filter fan unit a/c power supply Help needed *edited* 8/17/19 [Re: LogicaL Chaos]
    #26254414 - 10/15/19 04:46 PM (4 years, 3 months ago)

Yes it should, except I’m still missing one more up grade.

I have to add a potentiometer to make the fans variable speed


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26258674 - 10/17/19 01:48 PM (4 years, 3 months ago)

Quote:

ThUmB pRiNt said:


Is there anything I can do for you?

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You might let us tie up our boats at your dock in Key West if we ever get down that way some winter.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: Buster_Brown]
    #26259790 - 10/17/19 10:03 PM (4 years, 3 months ago)

Only thing is I am not as far south as the keys...

Unfortunately

However I am close enough to be able to meet you down there.


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Re: 36vdc Filter fan unit a/c power supply Help needed [Re: ThUmB pRiNt]
    #26259791 - 10/17/19 10:04 PM (4 years, 3 months ago)

10/17/19 Update!



Before this the fans did not blow hard enough because the pre-filters I installed added too much StaticPressure.

Now the FFU is up n running with variable speed and definitely blowing hard enough!!!

The little aluminum cylinder on the back of the unit inside that open box is the potentiometer nob it’s around half speed, maybe a tan higher.

I took the entire filter off and found a good spot to drill the hole for the potentiometer Nob to slide through. I purposely put it so that it would come out of the unit meanwhile still inside one of the boxes on the back to protect it.

I have yet to use it for a session but I did run it for a good 10-15 min and it’s a dream come true!


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