Faulty Tunze Magnet Holders ?

biggles · 01/09/2013, 07:43 PM

Just received 2 x Tunze 6025's and a 6045 and noticed the inner magnet holders on both the 6025's are not sealed like the inner magnet for the 6045. I'm assuming this is a factory fault and the magnets should be sealed when in contact with my tank water. Can someone confirm that the magnet holders are faulty or not please.

biggles · 01/09/2013, 08:36 PM

Tunze just informed me that they no longer seal the inner magnet holders and they are safe to use, the 6045 magnet holder is older stock - problem solved apparently.

Vpham97 · 01/09/2013, 09:10 PM

I received two new boxes of Tunze 6095s and there is a note in six languages explaining the magnet holders may be made using magnets without full plastic coat. These magnets are made from corrosion-proof ferrite magnets. They do not have to be sealed, they are made from the same materials as the impeller drive magnet.

Tron_954 · 10/24/2016, 02:47 PM

Yup, safe....

Tunze Rust by Jon Llama, on Flickr

Freelancer · 07/27/2017, 03:06 AM

I have the same issue with my magnet holder, I bought Tunze Turbelle nanostream 6045. After several years magnet is corroding and because of this it can't hold the pump.

Anyone know how to fix magnet?

mcgyvr · 07/27/2017, 05:03 AM

Quote:

Originally Posted by Freelancer

I have the same issue with my magnet holder, I bought Tunze Turbelle nanostream 6045. After several years magnet is corroding and because of this it can't hold the pump.

Anyone know how to fix magnet?

replace it.. once its gone to rust its not "fixable"

alton · 07/27/2017, 05:21 AM

Contact Roger at Tunze

Freelancer · 07/27/2017, 05:47 AM

Thanks, I'll try to contact Roger, looks like the issue with the magnet is common for those pumps.
BTW, pump itself works great, better then other pumps I have.

Freelancer · 07/27/2017, 12:46 PM

Here is the photos of my magnet, as you can see on second picture the opposite to glass side is not flat anymore, and doesn't hold the pump properly.

The pump was located near the top of my tank, so I don't think any metal particles can get inside magnet from the water...

Roger, can you please advice how to solve this issue?

Freelancer · 07/27/2017, 12:55 PM

Now with correct images

rvitko · 07/27/2017, 02:43 PM

I cannot see the pictures, but if it is less than 2 years old it would be under warranty, more than 2 years old the replacement part 6025.512 is the current equivalent and can be ordered on Tunze.com, you could also just swap them and unclip the clamp from the inside magnet and switch the inside and outside magnets.

Freelancer · 07/27/2017, 03:10 PM

It is more than 2 years old. But it looks like a lot of people have the same problem...
Is new replacement is free from this defect?

rvitko · 07/27/2017, 03:18 PM

You point to a lot of different problems with different versions of magnets, the sealed ones in the one link are quite old, 2006-2010, these rarely failed, but they can as can any magnet. The non sealed versions, usually have not failed, those magnets are ceramic, same ferrite material impellers are made from and the majority of claims of rusting are simply iron particles that were attracted to the magnet and rusting on the surface, it is impossible for the magnets themselves to rust. GFO is a very common source as it is rust and the dust is attracted to the magnet holder. These too can fail but only if the iron plate under the magnets is breached and even then, the result is no more dangerous than using GFO. The current version is rare earth magnets and fully sealed, I have yet to see one fail but this model has only been around since about end of 2014.

Freelancer · 07/27/2017, 03:51 PM

Here is link to google drive, I can't post an image in the message https://drive.google.com/open?id=0B0...nRDT20xZktOZlk
https://drive.google.com/open?id=0B0...2VycVhfV1NUdXM

Mine is non-sealed and I never use GFO.

rvitko · 07/28/2017, 08:24 AM

That is unusual, the magnet looks fine but the back is swollen, was it this way since new? One possibility is just the curing of the resin is the cause and it would have this to some degree since new, generally I would expect rust to push out the other way. I will send a PM.

Freelancer · 07/29/2017, 07:07 AM

No, when it was new the back was flat.
When doing regular maintenance I usually didn't detach magnets, some time ago when doing maintenance the part that holds the pump was detached from the magnet, and I noticed that magnet is not hold the pump and swollen.

Now the pump works perfectly, and magnet still can be attached to the fixture, but it can be detached without any force applied, I'm afraid that soon it will not hold the pump at all.

rvitko · 07/31/2017, 09:16 AM

If you cannot reply to my PM, please email at Tunze at sbcglobal dot net. I am leaving for Germany today and won't be back on line for 2-3 days. I get back to the office on the 11th.

Freelancer · 07/31/2017, 12:22 PM

Roger, thanks for your support, I still thinking what is better to do in this case, maybe I can find some shipping option that will be acceptable for you and me.

rvitko · 08/02/2017, 12:04 PM

I am the US distributor and I only handle the US market, I would contact the factory in Germany.

Bussell · 01/24/2018, 08:11 AM

Hi! Looks like I got lucky as well

My magnet has also become curved and doesn’t hold a pump anymore.
Could anyone suggest how to fix it?

alton · 01/24/2018, 09:05 AM

If your from US contact the guy above you Roger

rvitko · 01/24/2018, 10:48 AM

Yes, I am the contact for US. If it is less than 2 years old it will be replaced under warranty.

Bussell · 01/25/2018, 08:16 AM

Yay! Yes I’m from US and bought a pump about a year ago. Please let me know how I can get it replaced. Thanks!!

rvitko · 01/25/2018, 09:49 AM

Can you email me a copy of the receipt? Tunze at sbcglobal dot net

01/09/2013, 07:43 PM	#1
biggles Registered Member Join Date: Oct 2012 Location: Australia Posts: 3,907	Faulty Tunze Magnet Holders ? Just received 2 x Tunze 6025's and a 6045 and noticed the inner magnet holders on both the 6025's are not sealed like the inner magnet for the 6045. I'm assuming this is a factory fault and the magnets should be sealed when in contact with my tank water. Can someone confirm that the magnet holders are faulty or not please.

07/27/2017, 02:43 PM	#11
rvitko RC Sponsor Join Date: Apr 2000 Location: Austin Texas USA Posts: 35,785	I cannot see the pictures, but if it is less than 2 years old it would be under warranty, more than 2 years old the replacement part 6025.512 is the current equivalent and can be ordered on Tunze.com, you could also just swap them and unclip the clamp from the inside magnet and switch the inside and outside magnets. __________________ Roger Vitko Tunze USA "He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!" Current Tank Info: 210 gallon planted tank with Altum Angelfish

07/27/2017, 03:18 PM	#13
rvitko RC Sponsor Join Date: Apr 2000 Location: Austin Texas USA Posts: 35,785	You point to a lot of different problems with different versions of magnets, the sealed ones in the one link are quite old, 2006-2010, these rarely failed, but they can as can any magnet. The non sealed versions, usually have not failed, those magnets are ceramic, same ferrite material impellers are made from and the majority of claims of rusting are simply iron particles that were attracted to the magnet and rusting on the surface, it is impossible for the magnets themselves to rust. GFO is a very common source as it is rust and the dust is attracted to the magnet holder. These too can fail but only if the iron plate under the magnets is breached and even then, the result is no more dangerous than using GFO. The current version is rare earth magnets and fully sealed, I have yet to see one fail but this model has only been around since about end of 2014. __________________ Roger Vitko Tunze USA "He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!" Current Tank Info: 210 gallon planted tank with Altum Angelfish

07/28/2017, 08:24 AM	#15
rvitko RC Sponsor Join Date: Apr 2000 Location: Austin Texas USA Posts: 35,785	That is unusual, the magnet looks fine but the back is swollen, was it this way since new? One possibility is just the curing of the resin is the cause and it would have this to some degree since new, generally I would expect rust to push out the other way. I will send a PM. __________________ Roger Vitko Tunze USA "He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!" Current Tank Info: 210 gallon planted tank with Altum Angelfish

07/31/2017, 09:16 AM	#17
rvitko RC Sponsor Join Date: Apr 2000 Location: Austin Texas USA Posts: 35,785	If you cannot reply to my PM, please email at Tunze at sbcglobal dot net. I am leaving for Germany today and won't be back on line for 2-3 days. I get back to the office on the 11th. __________________ Roger Vitko Tunze USA "He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!" Current Tank Info: 210 gallon planted tank with Altum Angelfish

01/09/2013, 08:36 PM	#2
biggles Registered Member Join Date: Oct 2012 Location: Australia Posts: 3,907	Tunze just informed me that they no longer seal the inner magnet holders and they are safe to use, the 6045 magnet holder is older stock - problem solved apparently.

01/09/2013, 09:10 PM	#3
Vpham97 Premium Member Join Date: Feb 2001 Location: Largo, FL Posts: 1,679	I received two new boxes of Tunze 6095s and there is a note in six languages explaining the magnet holders may be made using magnets without full plastic coat. These magnets are made from corrosion-proof ferrite magnets. They do not have to be sealed, they are made from the same materials as the impeller drive magnet.

10/24/2016, 02:47 PM	#4
Tron_954 Registered Member Join Date: Jun 2011 Location: Ft. Lauderdale, FL Posts: 940	Yup, safe.... Tunze Rust by Jon Llama, on Flickr

07/27/2017, 03:06 AM	#5
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	I have the same issue with my magnet holder, I bought Tunze Turbelle nanostream 6045. After several years magnet is corroding and because of this it can't hold the pump. Anyone know how to fix magnet?

07/27/2017, 05:21 AM	#7
alton Registered Member Join Date: Jan 2005 Location: Zuehl, Texas Posts: 4,460	Contact Roger at Tunze

07/27/2017, 05:47 AM	#8
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	Thanks, I'll try to contact Roger, looks like the issue with the magnet is common for those pumps. BTW, pump itself works great, better then other pumps I have.

07/27/2017, 12:46 PM	#9
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	Here is the photos of my magnet, as you can see on second picture the opposite to glass side is not flat anymore, and doesn't hold the pump properly. The pump was located near the top of my tank, so I don't think any metal particles can get inside magnet from the water... Roger, can you please advice how to solve this issue?

07/27/2017, 12:55 PM	#10
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	Now with correct images

07/27/2017, 03:10 PM	#12
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	It is more than 2 years old. But it looks like a lot of people have the same problem... Is new replacement is free from this defect?

07/27/2017, 03:51 PM	#14
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	Here is link to google drive, I can't post an image in the message https://drive.google.com/open?id=0B0...nRDT20xZktOZlk https://drive.google.com/open?id=0B0...2VycVhfV1NUdXM Mine is non-sealed and I never use GFO.

07/29/2017, 07:07 AM	#16
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	No, when it was new the back was flat. When doing regular maintenance I usually didn't detach magnets, some time ago when doing maintenance the part that holds the pump was detached from the magnet, and I noticed that magnet is not hold the pump and swollen. Now the pump works perfectly, and magnet still can be attached to the fixture, but it can be detached without any force applied, I'm afraid that soon it will not hold the pump at all.

07/31/2017, 12:22 PM	#18
Freelancer Registered Member Join Date: Oct 2012 Posts: 13	Roger, thanks for your support, I still thinking what is better to do in this case, maybe I can find some shipping option that will be acceptable for you and me.

08/02/2017, 12:04 PM	#19
rvitko RC Sponsor Join Date: Apr 2000 Location: Austin Texas USA Posts: 35,785	I am the US distributor and I only handle the US market, I would contact the factory in Germany. __________________ Roger Vitko Tunze USA "He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!" Current Tank Info: 210 gallon planted tank with Altum Angelfish

01/24/2018, 09:05 AM	#21
alton Registered Member Join Date: Jan 2005 Location: Zuehl, Texas Posts: 4,460	If your from US contact the guy above you Roger

01/24/2018, 10:48 AM	#22
rvitko RC Sponsor Join Date: Apr 2000 Location: Austin Texas USA Posts: 35,785	Yes, I am the contact for US. If it is less than 2 years old it will be replaced under warranty. __________________ Roger Vitko Tunze USA "He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!" Current Tank Info: 210 gallon planted tank with Altum Angelfish

01/25/2018, 08:16 AM	#23
Bussell Registered Member Join Date: Jan 2018 Posts: 2	Yay! Yes I’m from US and bought a pump about a year ago. Please let me know how I can get it replaced. Thanks!!

01/25/2018, 09:49 AM	#24
rvitko RC Sponsor Join Date: Apr 2000 Location: Austin Texas USA Posts: 35,785	Can you email me a copy of the receipt? Tunze at sbcglobal dot net __________________ Roger Vitko Tunze USA "He's for every one of us, stands for every one of us, he'll save every man, woman and child in a mighty Flash!" Current Tank Info: 210 gallon planted tank with Altum Angelfish