Flow rate for 6105 24v knob turn down

[jason2459]

Pretty much the title of the thread. I'm either really brain dead right now and/or my search skills are lacking right now. What would be the flow rate of a 6105 with a 24v jumper and the white knob turned all the way down?

 

[rvitko]

Roughly 1100 gph, just keep in mind that if you are using a controller, this knob must be at 100% and you should then lower the power if needed by adjustments on the controller and changing the jumper voltage.

 

[jason2459]

Thanks. I am running them off a 7096. Turning them all the way up even at 30% with the 24v are pretty noisy. I did just get a new power supply and see it came with a few jumpers and can try those but my other one is the old style power supply and only have a 24v jumper. Is there something that can be damaged if I have the knob turned down all the way?

 

[rvitko]

The controller will not perform properly and it can damage the pump, the controller needs 8V to function and turning this knob dims the voltage to the controller, all 6105 power supplies included jumpers to lower the voltage and you can get them as spare parts for about $2 each on Tunze.com. A 6101.240 power supply would use the 6101.24x jumpers and a 6105 .240 power supply would use the 6105.24x jumpers. For 6101.240 12, 15, 18 and 24V are available, (15V, is out of stock at the moment) and for 6105.240 12, 18 and 24 are available. The knob is only intended to be used as an adjustment when the pump is run without any controller.

A noise issue will generally be solved by either updating the clamp or drive unit, if these are older pumps they likely have the 6065.510 clamp and 6065.650 will greatly reduce the noise. The 6105.700 drive unit was updated in late 2010 to further reduce noise.

 

[jason2459]

I'll order some more jumpers. I have replaced the clamps and mounts to the new silence clamps with blue silicone buffers, put on new clear bumper feet on the magnet and holder, and replaced the propeller assembly. Currently waiting on a wide flow front to try out too.

 

[slant77]

Same issue every thing is upgraded still get rattling noise at over 70%. Good to know you can order the 18 as my wife threw mine back up. It does seem weird you would not think with 24 at 70% is more flow than 18 at 100%. Which 18 at 100% were quite.

 

[rvitko]

Every 6V increases the flow roughly 30%, the slower the pump spins, the quieter it will be, 18V is roughly equal to 24V at 60%.

 

[jason2459]

The pump with the new power supply at 18v is so much quieter. With the 24v I can hear it around the entire house and feel the floor vibrate in front of the tank.

 

[rvitko]

The normal noise level change would be 58db for 18V and 64db for 24V, being a logarithmic scale the 6 point change is quite a bit, 50db, is a quiet room, 70db is a low traffic residential street. You could check this with an iPhone or Android app which is generally $1-$3.

 

[jason2459]

Well this frustrating. The 18v pump is just as noisy again. Took it out and cleaned it to no avail. Will have to try out the 12v when it gets it but don't think I'll get the flow I want. I might just have to try a new drive unit and by that time its an entirely new pump and new clamps.


If I get a new drive unit can I use the prop I already have that I just bought with the new shaft or will I have to by that too?

 

[jason2459]

The decibel meter doesn't mean much when you have a wifeometer. lol

 

[rvitko]

Jason,

You mentioned that you already replaced the drive units, and I see we did send you 2, part 6105.700, the full prop and shaft assembly. Make sure the drive units are properly assembled, the slot in the black disk faces the magnet/prop assembly, if the blue rubber faces the magnet you will get a screeching noise. I would also try swapping it with the quiet pump, if the noise follows the drive unit we can assume something is off with the drive unit. This is the only moving part so unusual noise has to be related to either this part, the front cover being loose or crooked or the magnet holder making hard surface contact, such as the side of the magnet touching a corner wall.