Tunze Stream 6205 stops working

[Navyblue]

I have a 2 year old 6205.

It's power supply died a few weeks back, which I replaced.

Yesterday it was still working. I knew because the noise bothers me and I fiddled with the output power through the multicontroller.

Today it stops working. I opened it up. There was nothing to clean, I cleaned it up anyway and put it back together, there is still nothing. No vibration or any kind of movement. The power supply was usually warm, but it is pretty much cold now.

The power supply appears to be working. The multicontroller lit up, and I measured the power supply output with a multimeter which gave me 24V.

Is the motor block dead?

 

[rvitko]

Which power supply did you get? A 6205 needs a 6300.240 power supply, they are fairly expensive and I don't recall shipping one recently. You are welcome to send it in for inspection, even if it is past warranty, we can definitely get it fixed up at a fair price.

 

[Navyblue]

I got it from an LFS here in Singapore. And yes the price is crazy for a 24V 4.2A switching power supply.

So I could repair it through our local distributor?

And is it possible for you to give me an estimate on the repair cost? I might just order the 6125 motor block and driver if it cost more than $100 or so to fix. It is a little too big for the tank (4x2x2'), and I assume the 6125 is quieter?

 

[rvitko]

Yes, sorry, I thought you were in the US, in singapore, the local distributor or shipping to the factory in Germany would be cheaper for repair.

Occasionally one of the power supplies dies, since it is cold, that is possible, you might try another from another pump, even a 6105 or 6055 short term for a test if the pump works, would be fine. This big power supply is generally very durable, but, if it was dropped at some point in shipping the overheat sensor can detach and land on a hot component and just shut it down.

 

[Navyblue]

When I plugged the power supply into the 6101 described here:

http://www.reefcentral.com/forums/showthread.php?t=2225068

The faulty 6101 would only work intermittently at low power, and the pump gets warmer than usual. The power supply is also warm. I suppose we can conclude the new power supply works?

When I was testing the 6101 I was also using the 6300.240. I no longer have the original power supply, I can't recall why, most likely it was dead too. You said the 6300.240 would only work in the 6101 short term? Do you think the 6101 only behaved that way because it doesn't have the right power supply? I thought the 6300.240 would work with 6101 too as it does 24V too and can provide more than enough current.

As for the faulty power supply, I actually opened it up, because considering the price, I was curious what it is made of . I poked around with a multimeter. I don't remember what I measured, but there is no voltage pretty much everywhere, if I recall correctly I think I concluded it was the rectifier or the component right after that is dead.

 

[rvitko]

A 6300.240 can run any pump we make indefinitely, it is 90-110W (depends on year). The smaller pumps though have weaker power supplies so a 6205 needs about 45W and the 6105.240 can only produce 50W so the peak of start up or being jammed or a foreign object quickly pushes it to overheat/overload and it will shut down or fail. For this reason, you can use a smaller power supply for a quick test, preferably dry so the wattage is really low, but you can't use it long term. The 6300.240 would have been fine for the 6101.

The laptop power supplies in the 90-110W size are always expensive, I have looked everywhere, Radio Shack, Fry's, computer stores, if they are of a reasonable quality they are usually $120-$200 depending on features. There are cheaper ones but they tend to have fans and vents so they don't hold up near a tank, they may also lack the safeties of overheat/overload protection and a built in fuse.

 

[DNA]

I have a 6205 and the transformer gave up on me as well.
Fortunately it's still under warranty so a new one will return shortly I hope.

When I bought this pump I thought it would be over sized for my tank and had planned to run it a slow speeds most of the time.
I had to set the speed to max and was still disappointed by the lack flow for the very high cost and thought something was not working right.

After "the flow comparison test" I have been waiting for some kind of an upgrade, but I have not seen one yet.
I have had many of your products and they are all good except for this one. Let's leave it there.

I'd just like to have it verified that this pump has had no upgrades and will not have any.

 

[rvitko]

No easy upgrade, you cannot just change a propeller or front cover and gain more than maybe 1000 lph. You will be able to get a 6255 pump only as an upgrade very soon, the production of these pumps has just started so we still don't have this upgrade set. Getting more flow needs a more powerful motor, that is the main problem. The only easy solution was more voltage but we cannot excede 24V and stay within the safety requirements so this needed a new motor design.

 

[tkeracer619]

The motor blocks were under powered to begin with then, how could the engineering team not know this??? They were already driven to their limits if you can only get a mere 250gph out of one with a bigger prop, heck you can almost double the flow of a koralia by changing out the prop. Is the upgrade free and any word on the 6305?

 

[DNA]

You will be able to get a 6255 pump only as an upgrade very soon, ...

Hi.

Is this upgrade available already?
Please provide any information you may have.

 

[rvitko]

Part 6301.015 will be the upgrade kit, they are not in stock yet.

 

[DNA]

Hi Roger.

" You will be able to get a 6255 pump only as an upgrade very soon"
Six months have passed now.

 

[rvitko]

They are available now, it is part 6301.015.