Fan extractor help desperately needed

[Guffetrold]

Hello fellow growers

I am about to give up finding out how to do it on my own.. It just isnt working.. Im positive I havent fried it or anything

The main problem probably is that i know very little of wiring, so any help would be much, much appreciated!!

The manual says the extractor can run at either min/max speeds via an external switch (? i cant just plug a cable in and power it up? Or does it mean something else) or you can use a speed switcher, which i dont have, so im interested in the other method, min/max.

I have included an image of how its supossed to be set up, when running at max speed. Can anybody help me with this?

This is the model: http://www.hydroponics.eu/fans-and-...ractor-blauberg-turbo-12-5cm-345m3h-9072.html

It came with no wiring what so ever..

 

[FreezerBoy]

If you don't have the switch, you need to pick a speed and hardwire it. Speed=noise so I'd try L1 first to see if the slower, quieter setting works.

This is very similar to the S&P, Let me see if I can find the wiring thread(s)...

.....add.......

Not the one I was hoping for but maybe this will help

 

[Yah`mon]

If it is meant for 2 speeds only. (if it comes with bare wires) You can hook it up to a double light switch, one for high speed one for low. I did this with 2 old furnace squirrel cage fans, except they are meant for 3 speed. So I hooked them to a triple light switch. I was going to use a variable speed controller, but it's not meant to work that way.

Call the manufacturer and see exactly how they recommend. They may say a variable speed controller isn't a good idea.

Well just looked at your link for it
It says speed switch included, also with their advertising, it sounds pretty simple, I can't see them making you do any crazy self wiring.

Yah`mon

 

[Guffetrold]

Thats whats wierd, no switch included, I double checked everything and made myself believe the switch was somehow internal.. But no wiring and no switch! Just wrote the store to ask if there was supposed to be an actual switch lol

Freezerboy: That looks a lot like what I have, but the difference is the wires (white, black, brown) from the fan are wired to its own terminal called XT3 (?) and the terminal above it is as the pic I posted

 

[Guffetrold]

I found a local electronics shop, which helped me with wire and a piece to 'double connect' one of the wires as to bypass the need of switch.. All is working now!

I dont think the temperature difference is huge though, with my cooltube.. Still cant keep the doors to my box closed without the temperatures reaching 30 degrees..It has to be said that i went directly into the room, the box is in, but the windows are wide open..

 

[Yah`mon]

Can you explain your setup? Maybe we can help ya lower those temps.

Are your plants in a tent? Inside a room?

If so whats the ambient temp of the room the tent is inside?

Yah`mon

 

[FreezerBoy]

I found a local electronics shop, which helped me with wire and a piece to 'double connect' one of the wires as to bypass the need of switch.. All is working now!

I dont think the temperature difference is huge though, with my cooltube.. Still cant keep the doors to my box closed without the temperatures reaching 30 degrees..It has to be said that i went directly into the room, the box is in, but the windows are wide open..

Dude, pics. Inquiring minds want to see.

 

[Hempstress]

I dont think the temperature difference is huge though, with my cooltube.. Still cant keep the doors to my box closed without the temperatures reaching 30 degrees..It has to be said that i went directly into the room, the box is in, but the windows are wide open..

It should make a lot of difference.....What kind of fan do you have? What are the cfms? Is it pulling air through the cooltube? What is the temp and source of your intake air?

 

[Guffetrold]

Hey guys and thanks for the responses. I havent been watching this thread, so thats why im slow

The fan extracts 345m3/h, the box (homebox) is 100 * 100 * 180 cm with the light about 18 inches from the plants. The temps the latest days have been in their 30's more often than not.. And 23-24 at night. I now extract out the window at all times, and the setup is like this:


|-------fan---filter<--air
|
|
|
|______Lamp_______| ^Exit(top of room)

My intake air (open window 50x140cm, open all day) is at 24.9 degrees with the thermometer lying there 20 minutes (still falling)

I also have an inline fan (12cm) at the bottom of my tent, at the air intake.

I must admit that I used duct tape to get it all together, so there should be some air leak, but I felt everywhere and no air is escaping and air is coming out the outtake ducting..

Thats the setup, any help lowering temps are still appreciated

 

[Guffetrold]

Today I tried reversing it. Removed the carbon filter and am now pulling the air through the cooltube, and out the exhaust in the top.

I am definately convinced something is not right. I tried closing the box up completely and the temps got to 32.7 before I had to open it again. The outdoor temp is around 24 degrees, inside probably 26-27. I exhaust through the window so the hot air doesnt get inside my room. The fan is alright i guess, without the cooltube I burn my hand even holding it close to the top, with it, I can hold my hand on the glass, no problem.

So if the fan sucks out most of the heat that is being generated from the bulb, why do I still suffer from these temperatures?

Btw, the plants dont seem to suffer from the high temps, but of course, as this is my first grow, I cant say if they would be bigger and better developed had they had lower temps


Edit: I know it isnt good for the fan to suck warm air through, but thought it might help, if anyone has any other suggestions to lower temps, I would probably put it back to where it was.

 

[LuvPB]

Hey Guffetrold I've got a question or two? Is the exhaust only sucking the air through the tube and straight outside? Is there a separate exhaust sucking air out of the tent/box? If not that could be your problem? You may not need much because of the air cooled light. I'd try a normal 4" duct fan just sucking air out of the tent and out beside the other exhaust to outside. If you already have a fan exhauting the tent? Keep thinking!

 

[Guffetrold]

Hey Luv and thanks for the response Right now, the one side of the cooltube is open, while the other is ducted to the extractor and then duct to outside top of tent, and further through the window to outside.. In the bottom I have a 4.7" inline fan moving air IN the tent, do you think I should reverse it? I dont think its powerfull enough to duct outside though.

 

[overbudjet]

It's me or your intake fan is smaller than your exhaust one.If it's the case, you are not able to exhaust more then you intake; maybe a little more.These only apply if you are in sealed room.

 

[LuvPB]

Hey man sorry, I thought I checked a few times to see how it was going. I had it wrong I thought the exhaust was tubed right from the room through the tube to outside. I'm no expert but I think your problem will be gone as soon as things cool off a few degrees C (I'd say 22C and you'll be laughing). In Alberta right now you'd need AC to pull this off last few days. No other lights/heat sources in the room? If so, once things cool outside you may need to duct the supply for the tube outside??? Besides the plants seem ok, still? Hows the grow???

 

[Guffetrold]

Hey Luv, I think you're right, and i've been thinking myself it all will be better once the temperatures decrease.. I mean, 29-32 max, and its pretty hot during the day..

The girls are looking great btw, tomorrow its 14 days since they first sprouted and the biggest one is 15 cm, and they're nice and bushy =)

Overbudjet: Both my exhaust and intake are 5" fans, but the room isnt sealed and also has three passive intakes, so I dont think that applies but thanks

 

[LuvPB]

Right on. My set up is in the room without a tent and in July two years in a row I've had a similar problems, killed clones!!! Hope to see some... hey I just clicked that thing on your last post and found the other thread (I'm learnig everyday). Cool, I'll check it out as soon as I make my tea.

 

[FreezerBoy]

What size lamp are we talking about?

Hey Guffetrold I've got a question or two? Is the exhaust only sucking the air through the tube and straight outside? Is there a separate exhaust sucking air out of the tent/box? If not that could be your problem? You may not need much because of the air cooled light. I'd try a normal 4" duct fan just sucking air out of the tent and out beside the other exhaust to outside. If you already have a fan exhauting the tent? Keep thinking!

You can't hook up an exhaust to the tube unless it has it's own dedicated intake that originates outside the tent. Otherwise unscrubbed air will simply pour out the tube exhaust.

It's me or your intake fan is smaller than your exhaust one.If it's the case, you are not able to exhaust more then you intake; maybe a little more.These only apply if you are in sealed room.

You can never exhaust more than you intake. That would require exhausting what isn't there. You can however, intake more than you exhaust. That's called positive pressure and intake fans are the sole cause. Positive pressure forces unscrubbed air to escape the cab and so should be avoided at all cost.

 

[Guffetrold]

400 w hps (son-t agro)

Only at night am I able to close the tent...