Just replaced my bearings in a Zhender Q450 with the help of this video. Some tips. Set the unit to Service mode and turn off power. Remove the heat exchanger. Dismount the fan following instructions in manual.Leave the fan wiring connected. Open the scroll housing by removing the 5 screws. Remove the motor from the scroll housing by removing 4 screws. Split the motor by removing the next 4 screws and taking care not to damage the 3 pins that connect to circuit board. Take the plastic cap off the bearing to expose the circlip. Remove circlip carefully with small circlip pliers. The bearing wouldn't move so I had to enlist my sons help to use a punch and tap the centre of the shaft while I held the centre of the motor and that got it moving. The bearing on the base needed some gentle persuasion with a screwdriver from the rear. Check the postion of the two star wadhers before removal. One sprung off before I could check it. I reassmbled with the lower one convex on the housing and outer one covex against bearing (small diameter touching) used of bearing to locate the circlip. Don't forget to reinstall plastic cap. Hope this helps.
Many thanks for the tutorial. It helped me to diy both fans bearings (two pairs) on my Zehnder Q450. Both fans became noisy just after 4 years of operation which is pretty close to bearing design life of 40,000 hours. Surprisingly none of the Sales guys who recommended me Zehnder didn’t advertised that I will need to replace both fans every 3-4 years at cost of £500! (Bearings c/out not offered by Zehnder nor EBM papst!). Thanks to you I have purchased 4 bearings at local shop for £10 for the lot and diy in 1.5hrs including cleaning. During the test I have selected max rpm and I could not hear it!!! Forgotten how quiet it can be - Zehnder is a Ferrari amongst heat recovery systems.
@@pbaijot May you tell us on which Zehnder ventilation unit model you replaced the fan bearings ? One of my Q350, one fan became suddenly noisy and I would like to replace their bearings. (the unit is 4 years and 4 months old ...).
Hi Piotr ! Thanks your feedback. May you please tell us which bearing model you use on your Q450 ? I own a Zehnder Q350 and I think the bearings should be the same, am I right ?
We had our Zehnder CA350 fan bearings fail at 2 years (both fans). I registered up to 60dB in our bedroom from our normally silent Zehnder! No help from Zehnder or our sales company - they said they should last forever. We managed to talk Zehnder America into covering the fans under warranty. So now we want to repair the original fans and buy extra bearings for next time! We have the Ebmpapst R3G220-RG19-07 fan. What bearings do you recommend? Thanks! Jacquie
@@zjel240 Got them at a local (quality) hardware store. I first disassembled everything, then took the bearings to the store and showed it to them. They found me a good replacement.
Just checking - we have the same fans in our Zehnder CA350 and bearings failed just after the 2 year warranty . After lots of diy and troubleshooting Zehnder covered the new fan costs. Proactively, we will take apart, clean, and install new bearings in our original fans and buy extra bearings for the future. What bearings did you use? 608-2Z or the online mentioned 608-2rsh/c3 for longer life?? Thx
@@bazilito Sorry, didn't see your question until now. I got a pair of no-name 608ZZ ABEC-5, though I don't know the rating of the original (can't recall that it was marked with one). I'd like to note also that the rotor did not slide of the shaft as easily as in this video; had to pry a bit from the casing-side through the vents.
@@frasermckeown5607 bearing NSK 608z was on my R3G190-RG19-36. Replaced with 608zz - try this www.bearing-king.co.uk/bearing/608-2z-skf-shielded-deep-groove-ball-bearing-8x22x7mm/3555 To press out the old bearings could use a flat head screwdriver to push it out along the other bearing centre bore, same for both. To after replacing bearings to push in the circlip use old bearing to push it in.
@@p1rkarlsson did the PCB follow with the cover in your case? I have the same fan (r3g190-rc05-19) but the PCB seems to have at least three super small locking plastic pins towards the fan motor, how did you do with them? So the PCB in my case is somewhat stuck, not as in this video. I'm suspecting it's a "sealing"/"plombering" so it can just be "destroyed"?
Thank You very much for this diy🙂 I've Just change bearings in my recuperator viessmann 300. I have fans: r3g190-rc05-09 and the bearings 608. But I put diffrent than original bearings. I placed 608 2RS C3.
Thank you for this!! Zehnder doesn’t offer any other assistance than sending a $500 new fan plus installation charges. We installed our Zehnder ourselves in a house we built by ourselves…so just replacing bearings makes more sense to us. We now have a silent Zehnder HRV again. We will do a full clean/inspection every 6 months from now on and will order extra bearings. Would the 608-2RSH/C3 perhaps last longer than the 608-2Z? We have an ocean and marina On either sides of our house so I would like the bearings to be as protective as possible.
Thanks a lot! I did this with a Papst R3G190-RD45-03, perfect instructions! Just to be precise, the ball bearings is named 608-2Z. I accidentally bought 608Z as in description and it fits, but will wear out faster. This is a very good good repair, as the bearings is around $5 each, and the whole fan is $400...
Hi Jacob, I have the CT300 as well. My fan model is R3G190-RC05-10. I am unable to lift out the first plate after removing the lock ring from the bearing. I see in the video that it can be a struggle, but mine wont lift at all. Did you experience anything like that?
@@martingiesbers1996 Hi, I cannot remember how I installed mine but I remember I installed it wrong the first time and I could hear metal scraping noise right away when I turned it on. So I just disassemble and change the orientation again :)
I am trying to buy new bearing, but of course the marking are not standardized. Im looking at SKF 608-2RSH and 608-2RSH-C3 (more ball clearance), which ones did you use ?
I think RSH is not necessary (waterproof) and that ZZ (2Z) is enough (dustproof), C3 option is for very high speed (10 000+ rpm), so not necessary either. Finally, which model you bought ?
@@bramvandeputte Oups ! The one I replaced two years ago (by 608-ZZ-SKF) is still noiseless, and I replaced the other one a few month ago, when it became noisy. I hope they will last longer than yours, even if replacing them is really simple and quite cheap on a Zenhder Q350.
I don't know anything of the internals of this vent. i suggest you search on google with the type-number and "operating notes" maybe this link can help you out : img.ebmpapst.com/products/manuals/R3G190RD4503-BA-ENG.pdf
Vielen Dank, tolle Anleitung. Konnte den Lüfter meiner Wärmepumpe Stiebel Eltron WPL 10 AC nach dieser Anleitung reparieren. Die Kugellager (2 Stück) sind folgende: SKF 6000-2Z/C3 Rillenkugellager.
We don’t see anything cause you cover the operation with your hands. Also, have of the screen without motion and what’s moves and need to be shown you do it out of the screen
I don't know much of the internals of this vent. i suggest you search on google with the type-number and "operating notes" maybe this link can help you out : img.ebmpapst.com/products/manuals/R3G190RD4503-BA-ENG.pdf as far as i understand from the notes you need to connect a certain voltage on pin 2. this pin regulates the fanspeed. see p9 how to wire pin2 on pin3
see img.ebmpapst.com/products/manuals/R3G190RD4503-BA-ENG.pdf as far as i understand from the notes you need to connect a certain voltage on pin 2. this pin regulates the fanspeed. see p9 how to wire pin2 on pin3 with a potentiometer to regulate the fanspeed
Just replaced my bearings in a Zhender Q450 with the help of this video.
Some tips. Set the unit to Service mode and turn off power. Remove the heat exchanger.
Dismount the fan following instructions in manual.Leave the fan wiring connected.
Open the scroll housing by removing the 5 screws.
Remove the motor from the scroll housing by removing 4 screws.
Split the motor by removing the next 4 screws and taking care not to damage the 3 pins that connect to circuit board.
Take the plastic cap off the bearing to expose the circlip.
Remove circlip carefully with small circlip pliers.
The bearing wouldn't move so I had to enlist my sons help to use a punch and tap the centre of the shaft while I held the centre of the motor and that got it moving.
The bearing on the base needed some gentle persuasion with a screwdriver from the rear.
Check the postion of the two star wadhers before removal. One sprung off before I could check it. I reassmbled with the lower one convex on the housing and outer one covex against bearing (small diameter touching) used of bearing to locate the circlip. Don't forget to reinstall plastic cap.
Hope this helps.
Many thanks for the tutorial. It helped me to diy both fans bearings (two pairs) on my Zehnder Q450. Both fans became noisy just after 4 years of operation which is pretty close to bearing design life of 40,000 hours. Surprisingly none of the Sales guys who recommended me Zehnder didn’t advertised that I will need to replace both fans every 3-4 years at cost of £500! (Bearings c/out not offered by Zehnder nor EBM papst!). Thanks to you I have purchased 4 bearings at local shop for £10 for the lot and diy in 1.5hrs including cleaning. During the test I have selected max rpm and I could not hear it!!! Forgotten how quiet it can be - Zehnder is a Ferrari amongst heat recovery systems.
Exactly the same for me
@@pbaijot May you tell us on which Zehnder ventilation unit model you replaced the fan bearings ? One of my Q350, one fan became suddenly noisy and I would like to replace their bearings. (the unit is 4 years and 4 months old ...).
Hi Piotr ! Thanks your feedback. May you please tell us which bearing model you use on your Q450 ? I own a Zehnder Q350 and I think the bearings should be the same, am I right ?
@@jcarnouil Q450.
We had our Zehnder CA350 fan bearings fail at 2 years (both fans). I registered up
to 60dB in our bedroom from our normally silent Zehnder! No help from Zehnder or our sales company - they said they should last forever. We managed to talk Zehnder America into covering the fans under warranty. So now we want to repair the original fans and buy extra bearings for next time! We have the Ebmpapst R3G220-RG19-07 fan. What bearings do you recommend? Thanks! Jacquie
Thank you, this gave me the courage to try it myself on a R3G190-RD45-12. Took a while to get the second bearing out, but all is running smooth now!
I currently have the same issue. Where did you order your bearings?
@@zjel240 Got them at a local (quality) hardware store. I first disassembled everything, then took the bearings to the store and showed it to them. They found me a good replacement.
Thx so much for putting this online, it solved the issue I had with an R3G220-RG19-07, in a Zehnder ComfoD 300 Basic.
Just checking - we have the same fans in our Zehnder CA350 and bearings failed just after the 2 year warranty . After lots of diy and troubleshooting Zehnder covered the new fan costs. Proactively, we will take apart, clean, and install new bearings in our original fans and buy extra bearings for the future. What bearings did you use? 608-2Z or the online mentioned 608-2rsh/c3 for longer life?? Thx
Thanks! That helped me through a bearing change for a similar fan motor, the r3g190-rc05-19.
Petter Karlsson do you know a partnumber or the apec for the bearing? I got the same problem with this fan😏
@@bazilito Sorry, didn't see your question until now. I got a pair of no-name 608ZZ ABEC-5, though I don't know the rating of the original (can't recall that it was marked with one). I'd like to note also that the rotor did not slide of the shaft as easily as in this video; had to pry a bit from the casing-side through the vents.
I am having an issue trying to find bearings that have a snug fit to the shaft. Can you help at all?
@@frasermckeown5607 bearing NSK 608z was on my R3G190-RG19-36. Replaced with 608zz - try this www.bearing-king.co.uk/bearing/608-2z-skf-shielded-deep-groove-ball-bearing-8x22x7mm/3555
To press out the old bearings could use a flat head screwdriver to push it out along the other bearing centre bore, same for both.
To after replacing bearings to push in the circlip use old bearing to push it in.
@@p1rkarlsson did the PCB follow with the cover in your case? I have the same fan (r3g190-rc05-19) but the PCB seems to have at least three super small locking plastic pins towards the fan motor, how did you do with them? So the PCB in my case is somewhat stuck, not as in this video. I'm suspecting it's a "sealing"/"plombering" so it can just be "destroyed"?
Thank You very much for this diy🙂 I've Just change bearings in my recuperator viessmann 300. I have fans: r3g190-rc05-09 and the bearings 608. But I put diffrent than original bearings. I placed 608 2RS C3.
Thank you for this!! Zehnder doesn’t offer any other assistance than sending a $500 new fan plus installation charges. We installed our Zehnder ourselves in a house we built by ourselves…so just replacing bearings makes more sense to us. We now have a silent Zehnder HRV again. We will do a full clean/inspection every 6 months from now on and will order extra bearings. Would the 608-2RSH/C3 perhaps last longer than the 608-2Z? We have an ocean and marina On either sides of our house so I would like the bearings to be as protective as possible.
Thank you so much for the video, you help me a lot !!!
Thanks for this video, you have helped a lot!
Thanks a lot! I did this with a Papst R3G190-RD45-03, perfect instructions! Just to be precise, the ball bearings is named 608-2Z. I accidentally bought 608Z as in description and it fits, but will wear out faster. This is a very good good repair, as the bearings is around $5 each, and the whole fan is $400...
I have the same Papst fan and it had original 608-Z bearings.
This method works also for the ebmpapst r3g190-rg19-34, found in the Vasco D400. Mine has also the 608-2Z bearing
Can confirm that a 608Z bearing did the job on a danish vent system under brand Nilan model Comfort CT300 worked:)
Hi Jacob, I have the CT300 as well. My fan model is R3G190-RC05-10. I am unable to lift out the first plate after removing the lock ring from the bearing. I see in the video that it can be a struggle, but mine wont lift at all. Did you experience anything like that?
What are those things you take out at 3:26? They look a bit like washers. What are they called and where can you buy them from?
Hi, on 3:46 of the video, it shows two curved (kind of serrated) plates supporting the ball bearing. Are they installed in convex or concave?
Hi, did you get an answer to this question? I have the same question. Thanks!
@@martingiesbers1996 Hi, I cannot remember how I installed mine but I remember I installed it wrong the first time and I could hear metal scraping noise right away when I turned it on. So I just disassemble and change the orientation again :)
Thanks for this video, was the bearing 608z or 680zz?
I am trying to buy new bearing, but of course the marking are not standardized. Im looking at SKF 608-2RSH and 608-2RSH-C3 (more ball clearance), which ones did you use ?
i bought the 608ZZ but it was not branded .
I think RSH is not necessary (waterproof) and that ZZ (2Z) is enough (dustproof), C3 option is for very high speed (10 000+ rpm), so not necessary either. Finally, which model you bought ?
@@jcarnouil I bought the SKF 608-2RSH two years ago, and now they're getting noisy again. I guess Ill have to replace them every 2 years ...
@@bramvandeputte Oups ! The one I replaced two years ago (by 608-ZZ-SKF) is still noiseless, and I replaced the other one a few month ago, when it became noisy. I hope they will last longer than yours, even if replacing them is really simple and quite cheap on a Zenhder Q350.
Cant see what right way to put in the two discs ?
How to connect this fan with 5 wires and how we distinguish between speed, cooling and automatic type of ebmpapst 48 v. dc 1.38A.66w with many thanks
I don't know anything of the internals of this vent. i suggest you search on google with the type-number and "operating notes" maybe this link can help you out : img.ebmpapst.com/products/manuals/R3G190RD4503-BA-ENG.pdf
Where did you get the bearings? Can you share a link or product numbers? I have 2 R3G190-RC05-03
units that have slowly become noisy. Cheers
i bought them in a local hardware store
Standard bearing as for rollers you can buy even in the Sport Direct or similar shop
Could you advice after what period of operation your bearing need replacement?
@@saniavy just over halfway through its recommend running hours
@@jasonoldy69 what is recommended running hours? As I have it in my air vent recuperator there are recommended to replace whole motor :)
Vielen Dank, tolle Anleitung.
Konnte den Lüfter meiner Wärmepumpe
Stiebel Eltron WPL 10 AC nach dieser Anleitung reparieren.
Die Kugellager (2 Stück) sind folgende: SKF 6000-2Z/C3 Rillenkugellager.
Best work
We don’t see anything cause you cover the operation with your hands. Also, have of the screen without motion and what’s moves and need to be shown you do it out of the screen
How can I get electricity to this fan?
I don't know much of the internals of this vent. i suggest you search on google with the type-number and "operating notes" maybe this link can help you out : img.ebmpapst.com/products/manuals/R3G190RD4503-BA-ENG.pdf
as far as i understand from the notes you need to connect a certain voltage on pin 2. this pin regulates the fanspeed. see p9 how to wire pin2 on pin3
@@sloomans2266 Thank you very much
Thanks, i have three similar new fans, anyone interested? R2E250-AT06-19
Plz send control wire connection video
see img.ebmpapst.com/products/manuals/R3G190RD4503-BA-ENG.pdf
as far as i understand from the notes you need to connect a certain voltage on pin 2. this pin regulates the fanspeed. see p9 how to wire pin2 on pin3 with a potentiometer to regulate the fanspeed