7095 not controlling pair of 6105's

[KJoFan]

Picked up a pair of 6105's and a 7095 controller recently but it seems like the 7095 isn't actually controlling the pumps. To make it obvious I set the controller so the shortest pulse I could, they seem to run full on no matter what.

I can ramp the speed up and down using the inline adjustment knobs (don't know the technical term) on the pump cords. It would seem to me I shouldn't be able to change the speed there, the 7095 should trump those controls, right?

Anyone have any suggestions or had this happen before? Each piece of equipment seems to be working fine, they just aren't talking.

 

[KJoFan]

Update: I switched out the cords connecting the pumps to the controller and got one to work.

I think I've narrowed down the issue with the second pump. The white adjustment knob on the potentiometer is broken such that there is nothing to grab to make sure that pump is set at 100%. From what I've read, having it set to 100% power is essential for the controller to work.

Is it possible to get the potentiometer fixed so that it will also work?

 

[rvitko]

The knob is easy to change, in fact if you have a small jewelers philips screwdriver you can use that to adjust it and push out what remains of the knob from the potentiometer, when using a controller the knob must be at 100%, unless you turn them down, they do ship at full power. If you get me your address we can mail out a replacement knob.

 

[KJoFan]

The entire potentiometer box has trouble staying together. In fact, it's held together by a rubberband now. Classy. I don't know if there's anything to be done about that though?

I will have to take a look at what's left of the knob tonight.


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[rvitko]

This is also easy to resolve, just flare the tabs outward slightly and it will then lock firmly, I would remove the last bit of the knob first. It is best to think of the knob as a plastic screwdriver, the head is just a small phillips head and the knob is essentially the handle, the phillips head is broken off in the knob and you just push it out with a small screwdriver.

 

[KJoFan]

It appears I now have the pump with the broken knob working well with the controller. I can hear and feel it ramp up and down in the pulse mode. Unfortunately, my issue is now the other pump that had seemed to work with the controller originally, is not pulsing/responding to the controller.

I've unplugged and re-plugged things in in an attempt to reset it and made sure the potentiometer is turned all the way to 100% with no luck.

What might be causing this pump to act up now?

 

[rvitko]

The most likely cause is some debris caught between the drive unit and shaft, it should spin freely on the shaft and calcium deposits or fine debris can seize them together.

 

[KJoFan]

Could be I suppose. I'll have to check it out. It's a new impeller. Only a couple months of use on it.

Edit: Wouldn't that cause the pump to seize completely rather than just not respond to pulsing? It is just not responding to the varying power levels set, it runs at a constant level that is less than 100%.

 

[rvitko]

The pump shuts down as a safety to prevent it from burning out if the electronics detect it is taking more power to run then it should. Be sure the potentiometer on the pump end connector is at 100% if a controller is connected, it will stall out and stop if it is not, this is only to be adjusted when no controller is being used.

 

[KJoFan]

The pump stays running at all times. And it seems to be ramping up slightly when it should on pulse mode. It just does not seem to be ramping up as high as it should. I only notice a slight increase compared to the other pump.

The potentiometer is at 100%. I checked that a couple times.

So it's working but only at the slower speeds it would seem.


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[rvitko]

The power supply has a 2 pin jumper over the Red LED that can be changed to adjust the pump power, 12V,18V and 24V are provided, is it possible this pump has a lower voltage jumper installed than the other?

 

[KJoFan]

Well my power supplies have green LEDs so here's a pic of one. Maybe they are all wrong?



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[rvitko]

Those are older 6205/6305 or 6201/6301 power supplies, they are constant 24V, they will work but are overkill for the smaller 6105. The pumps seem to be a bit of a hodge podge, perhaps one is a larger pump model?

 

[KJoFan]

It is a bit of a hodge podge set up. Maybe I would be better off selling the whole lot and starting over.

 

[KJoFan]

They are both 6105 pumps according to the print on the motor block.

 

[KJoFan]

These 6105's are on a 4x2x2 120g. Maybe there is a better combination of equipment you'd suggest for this size tank?

 

[rvitko]

Personally, I would use a pair of 6095's on a 120 unless the tank was heavily SPS and then the 6105's are better suited for the higher flow needs. I would be happy to go over the pumps and try to figure out what is wrong, their is nothing wrong with using the bigger power supply except you cannot lower the voltage and on a 120, you will likely run a 6105 at 12 or 18V and not 24V.

 

[KJoFan]

Right now the tank isn't really heavily stocked with anything. Little to no SPS. Soft and LPS at this point. No real plans to go to an SPS dominated tank with this one, but hopefully upgrade to a larger tank in the future.

I guess I'm not worrying too much at this point that the one isn't pulsing, it is at least working. Right now, the one that is pulsing is set to the min 30% to a max of 60%. Proof they are overpowered.

My elegance isn't a fan of much more current than it's already getting.

I just find it strange that pump A worked/pulsed from the start and pump B didn't. After switching out the cords pump B pulses just fine and now pump A is only running at a constant 30-40%.

 

[rvitko]

The controller cables are standard MIDI or 5 pin DIN cables and you could get them at Radio Shack. That may be the issue based on what you describe.

 

[KJoFan]

Another question to help narrow this down. Should I hear any noise at all from the pumps ramping up and down? The problem pump was on the pulse cycle last evening and the surface of the water did change to imply that there was some amount of ramping. But I can't hear or feel any vibration from that pump to confirm. The working pump I can hear a definite ramping up and down and feel it when I put my hand against the outside magnet.

I don't have the newer mounts, I have the older 'H' type magnets. The pump I can hear ramp has an old (black blade) impeller. The other has a new (blue blade) few month old impeller.