DIY Res... hard to get suction going?

Vedder323 · Mar 25, 2003

I just did a Res/cooler made out of a little fridge and it wont suck the water out of it. I can get the pump to bring it in but thats all. Anyone have advice or is my pump to weak? I have a 1046 right now and a 1250 on the way... Any help is great!!! TY...

I.M.O.G. · Mar 25, 2003

If all the seals are good and the path from the res to the inlet of the pump is all filled with water then it should work.

How do you get the pump to bring water into the res? If it can pump water in then it must be drawing water out, unless the inlet of the pump is drawing from somewhere else.

If it can pump water in then that means there is a problem between the outlet of the res and the inlet of the pump.

Vedder323 · Mar 25, 2003

I am not sure what is wrong then... I will post pics tommorow...

I.M.O.G. · Mar 25, 2003

If you are going to post a thread topic you could atleast answer the questions of the people trying to help you.

How do you get the pump to bring water into the res?

Vedder323 · Mar 25, 2003

I could try to explain it or just show pics... I will post them later. TY for your help.

Vedder323 · Mar 25, 2003

here are pics...
http://groups.msn.com/Veddershomepage/vedderscomppics.msnw?action=ShowPhoto&PhotoID=100
http://groups.msn.com/Veddershomepage/vedderscomppics.msnw?action=ShowPhoto&PhotoID=99

as you can see... I have drilled 2 holes in the fridge. One high "intake" and one low "outlet." In my current setup, I am running
1 pump Eheim 1046 to-
Maxxpert 120mm radiator to-
Waterblock...

When I was trying the chiller/res...

I placed it between the pump and Radiator.

I wasnt able to get a damn suction on this guy... anyone know what im doing wrong or am I just limited by the power of my pump???

Mark Larson · Mar 25, 2003

Is the pump running submerged? Is it supposed to?

Vedder323 · Mar 25, 2003

the pump is not submerged.

Skulemate · Mar 26, 2003

Vedder323 said:
I wasnt able to get a damn suction on this guy... anyone know what im doing wrong or am I just limited by the power of my pump???

You will never be able to develop suction with a pond or fountain pump... that's not what they were designed to do. Unless a pump is specifically rated as self priming it's best to assume that it has no lift capability on the suction line at all.

I.M.O.G. · Mar 26, 2003

Is he using an eheim 1046?

Is the size of the output on the fridge smaller than the input in the fridge? It looks like it in the picture atleast. This would restrict the intake of the pump and be VERY bad for the pump.

Skulemate · Mar 26, 2003

Forget restricting the inlet for the time being... the inlet must either be gravity fed, or fed by the loops return. It will not lift water any significant height... period.

Vedder323 · Mar 26, 2003

The inlet and outlet are the same size. I have the inlet on top... pouring into the chiller, and the outlet on the bottom.

Skulemate · Mar 26, 2003

Ok, but answer this. Is the pump located below the surface level of the fluid in the mini fridge, or is it above that level. If it is above it needs to be lowered until it is lower than the fluid in the reservior.

Vedder323 · Mar 27, 2003

I will try this... So, just so I understand... As long as I leave my setup on the ground, and put my fridge on a shory bench or box, I should be up and running?

Skulemate · Mar 27, 2003

You don't have to have your whole setup on the ground... just the pump. And even then, the pump only needs to be low enough that its intake is always lower than the fluid level in your fridge. Having both on the ground should work just fine.

Mark Larson · Mar 27, 2003

Actually why don't you run your pump submerged and keep the res/fridge below your computer? That'll cut down on tubing a fair lot and probably give you better flow.

Skulemate · Mar 27, 2003

Mark Larson said:
Actually why don't you run your pump submerged and keep the res/fridge below your computer? That'll cut down on tubing a fair lot and probably give you better flow.

There's another option for you... sort of removes any risk of having the pump leak as well

DIY Res... hard to get suction going?

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