Jecod 8000 return pump flow rate?

[Saaqib_Ansari]

I’ve been so confused about what the flow rate is on this pump I can’t figure it out had a search online and the manual still lost.

the pump right now is set to 10 watts F030 (assuming this means 30%?)

if I press the up button in the controller it will go to F031.

10 watt F030 is the lowest it goes. And this is all my tank can handle as if I put it any higher my sump’s return chamber begins to empty. my issue is is this flow too slow for my tank. And what even is the flow rate at this power.
Is there anyway of putting the power higher and stop the sump from emptying?

 

[Saaqib_Ansari]

Just seen this - lowest setting on a 8000 is 2,400 LPH. My tank including sump is 700L is this ok?

 

[eggplantparrot]

do you have a gate valve on your full siphon drain?

just sounds like your valve is closed too much and not letting enough water back.

what size plumbing do you have for the drains?

 

[Saaqib_Ansari]

do you have a gate valve on your full siphon drain?

just sounds like your valve is closed too much and not letting enough water back.

what size plumbing do you have for the drains?

There’s a ball valve which is fully open. I have no idea what size plumbing is being used unfortunately I’ve just accepted the fact I can only run it at its lowest setting

 

[Uncle99]

Sounds more like your sump is restricting the flow, if your using 100micron and/or sponge, this can restrict the flow to the return.

Or maybe your piping is to thin.....in that size tank I would expect it should be at least 1” or “1.25”...

The manufactures ratings are always higher than reality.
Your low 2400 is likely 1600-1800lph and with 700l, your 2-2.5 turnover.

Fast through your sump filtration is not a good thing, we need contact time.

 

[Saaqib_Ansari]

How much flow should I expect to be leaving the sump?

 

[hambandit]

it sounds like you just dont have enough water in the whole system, honestly. when the return pump chamber "begins to drain down" that means the level in the display is rising, albeit slightly and you may not be able to see it. add some more water and let it eat. just keep an eye you dont overflow your display, but the likelihood of that happening is very slim. assuming you have even just a single 1" bulkhead you should be able to run 900+ gph through it.

 

[Uncle99]

As much as you can push up AND, that you can get back down.
I leave my gate valves wide open and start the pump winding it up until she just hits the overflow, then tune that overflow to be quiet.

That’s not a big pump for 700liter, but sufficient.

 

[vetteguy53081]

2100gph max rate at 5 feet. The longer the water travel, the lower the rate
Example is if you run it at 10 feet, max would be about 1675 GPH

 

[Saaqib_Ansari]

Starting to think not enough water in the whole system could add more to the sump as it’s barely over the baffles at the moment and same with the tank just over the weir

 

[Saaqib_Ansari]

Water from return isn’t moving far at all literally under the tank max 5ft I’d say through the pipework

 

[hambandit]

the only way to raise the water in the display is to run it faster through the sump. you wont see a water level change anywhere in the system outside of the return area until you have enough flow or upwards pressure to keep more in the display. thats how it works, something something fluid dynamics.

 

[vetteguy53081]

Starting to think not enough water in the whole system could add more to the sump as it’s barely over the baffles at the moment and same with the tank just over the weir

Sounds like pump is moving water faster than the returns are able to deliver. Slow down pump slightly and see if the water comes up over the baffles

 

[hambandit]

2100gph max rate at 5 feet. The longer the water travel, the lower the rate
Example is if you run it at 10 feet, max would be about 1675 GPH

not exactly. flow rates are dependent on head pressure which has little to do with linear distance, but everything to do with vertical distance, elbows, valves, etc. head pressure can be calculated by using this guy https://pentairaes.com/pump-calculator

also those pumps are usually grossly overrated and dont flow near what they are "rated" for.

 

[vetteguy53081]

not exactly. flow rates are dependent on head pressure which has little to do with linear distance, but everything to do with vertical distance, elbows, valves, etc. head pressure can be calculated by using this guy https://pentairaes.com/pump-calculator

also those pumps are usually grossly overrated and dont flow near what they are "rated" for.

I Agree with flow rating, why they state " up to" and Max. I said distance- head pressure is better terms.

 

[hambandit]

sooo.....are you mixing up another 5gallons of water yet?

 

[Saaqib_Ansari]

Lol I will do it today I have 45 litres mixed water for a water change waiting but it was 2am last night when the replies came in.
Only issue is my return pump is running at the lowest setting. I can’t put it any lower. I thought it might just be too powerful for my tank.

 

[hambandit]

when you turn your return pump off, how full is your sump?

step 1) turn off return pump
step 2) observe sump level
step 3) add water to sump until it is almost full, but not overflowing.

dont worry about whether or not water is higher than the baffles when the pump is off. all we're doing is seeing how much water your system can contain in the event of a power failure. that is how much water your system can safely hold. after you have determined that, turn the return pump back on and mess around with power levels. i bet you can turn that return pump up a fair bit.

 

[Rmckoy]

when you turn your return pump off, how full is your sump?

step 1) turn off return pump
step 2) observe sump level
step 3) add water to sump until it is almost full, but not overflowing.

dont worry about whether or not water is higher than the baffles when the pump is off. all we're doing is seeing how much water your system can contain in the event of a power failure. that is how much water your system can safely hold. after you have determined that, turn the return pump back on and mess around with power levels. i bet you can turn that return pump up a fair bit.

After turning the pumps back on .
mark the sump with a market as your highest water level.

Do not let the water get above that level when running . If as for when the power goes out . You won’t have by worry about overflowing .

I have a similar pump but the 15000L
I can’t run it higher than 85%

 

[Saaqib_Ansari]

Managed to set me return pump at 100% but now it’s stuck I can’t press up down or feed mode I’ve tried turn it on off no luck looks like I’m stuck at 100% now is that ok? Tank is a lot noiser now though