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My *3rd* VPP655/Laing D5 died yesterday. Why is this happening? - Page 6

post #51 of 125
Thread Starter 
Quote:
Originally Posted by coolmiester View Post

If you look at the picture you posted, you have the o-ring fitted wrong – basically you have stretched around the side shoulder of the pump whereas it should fit into the recess of the XSPC top and mate up with the top of the pump to create a perfect seal.

The way you have it means the the pump impeller is hitting the XSPC pump top which in turn is pushing the impeller back into the pump casing causing it to hit the sidewall as can be seen by the friction marks.

It’s lucky it lasted as long as it did to be honest but not something that i would warrant an RMA as it’s user error.


It never fitted the way you are suggesting. the ring was far too big in diameter for that. I also think the manual that came with either suggested otherwise too, but It's been a while.
post #52 of 125
If you look at the two pictures below - the first is an XSPC D5 Dual Bay Reservoir which granted isn't the XSPC Acetal Top for Laing D5 which you are using but the principal is the same, which incidentally is the same for all makes of aftermarket top if i'm not mistaken as i've never ever come across one that suggests you fit the o-ring to the collar of the pump though i'll stand corrected if anyone can show me one.

Anyway, the first picture shows the o-ring recess and the second picture shows the original Laing D5 o-ring sitting in place which the pump literally sits on top and is then tightened down using the supplied XSPC bracket.

The third picture (taken from the XSPC website shows the exact same recess in the XSPC Acetal Top for Laing D5






post #53 of 125
Or check out the manual for fitting the Acetal Top For D5 on the XSPC website thumb.gif
post #54 of 125
Quote:
Originally Posted by RagingCain View Post

I have had this issue and can confirm its do to either custom tops OR in my case a bay reservoir. Koolance don't even make my dual pump reservoir anymore and now I know why. They quietly discontinued it without notice.

I have been through 4x MCP-655B pumps in two years and another one just died Sunday. I am furious now, my computer is dead once again... didn't even make it 4 months this time.

dang knock on wood my mcp-655B has been running in a xspc bay res the older style for over 3 years with cpu or gpus maxed out folding,boincing or mining over the years.
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SABERWOLF
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XEON-WOLF
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post #55 of 125
Quote:
Originally Posted by coolmiester View Post

If you look at the two pictures below - the first is an XSPC D5 Dual Bay Reservoir which granted isn't the XSPC Acetal Top for Laing D5 which you are using but the principal is the same, which incidentally is the same for all makes of aftermarket top if i'm not mistaken as i've never ever come across one that suggests you fit the o-ring to the collar of the pump though i'll stand corrected if anyone can show me one.

Anyway, the first picture shows the o-ring recess and the second picture shows the original Laing D5 o-ring sitting in place which the pump literally sits on top and is then tightened down using the supplied XSPC bracket.

The third picture (taken from the XSPC website shows the exact same recess in the XSPC Acetal Top for Laing D5
Warning: Spoiler! (Click to show)





EK and koolance tops fit the O-ring to the pump

https://koolance.com/files/products/manuals/manual_cov-rp450rev2_d100eng.pdf

http://www.ekwb.com/shop/EK-IM/EK-IM-3831109842584.pdf

The Oring is too big too fit inside the Top, there is just enough room for the pump body and the Oring stays outside.

The XSPC seems different. There must be a different O-ring.
Edited by Jakusonfire - 3/11/14 at 3:00am
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post #56 of 125
Quote:
Originally Posted by Jakusonfire View Post

[/SPOILER]
EK and koolance tops fit the O-ring to the pump

https://koolance.com/files/products/manuals/manual_cov-rp450rev2_d100eng.pdf

http://www.ekwb.com/shop/EK-IM/EK-IM-3831109842584.pdf

The Oring is too big too fit inside the Top, there is just enough room for the pump body and the Oring stays outside.

The XSPC seems different. There must be a different O-ring.

Both the Koolance and EK you linked don't use the standard Laing D5 o-ring and are supplied with aftermarket ones where as the XSPC does use the standard Laing D5 o-ring but thanks for pointing that out thumb.gif

All three manuals are quite clear on which o-ring to use and how to fit them so i still stand by saying it's user error.
post #57 of 125
I dug out my standard Laing top to compare to the EK.

The O-rings are indeed different sizes. The standard seals on the face and the others seal on the outside.



The only thing is, If I stretch the standard ring onto the pump it just positions the pump and impeller further out rather than closer but maybe the clamping mechanism of the XSPC top makes a difference.
Edited by Jakusonfire - 3/11/14 at 3:24am
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post #58 of 125
Thread Starter 
I can't remember what the interior looked like after opening it, I just put the ring around the pump for the picture. I only ever had 1 o-ring, and when it was all installed, it looked like the completed image there.
post #59 of 125
Quote:
Originally Posted by paradoxum View Post

It never fitted the way you are suggesting. the ring was far too big in diameter for that. I also think the manual that came with either suggested otherwise too, but It's been a while.

Quote:
Originally Posted by paradoxum View Post

I can't remember what the interior looked like after opening it, I just put the ring around the pump for the picture. I only ever had 1 o-ring, and when it was all installed, it looked like the completed image there.


In your first reply to my post, you already said "It never fitted the way you are suggesting. the ring was far too big in diameter for that. I also think the manual that came with either suggested otherwise too, but It's been a while" so going by that you obviously had it fitted in some other way....namely as it was in your picture.

It's too much of a coincidence to have three Laing D5 pumps fail all in around six months other than to have had them fitted incorrectly which your picture would suggest.
post #60 of 125
Thread Starter 
Quote:
Originally Posted by coolmiester View Post


In your first reply to my post, you already said "It never fitted the way you are suggesting. the ring was far too big in diameter for that. I also think the manual that came with either suggested otherwise too, but It's been a while" so going by that you obviously had it fitted in some other way....namely as it was in your picture.

It's too much of a coincidence to have three Laing D5 pumps fail all in around six months other than to have had them fitted incorrectly which your picture would suggest.

Like I said, it's been over a year since I installed it, I'm sorry my memory isn't that good. The store also checked them all out and didn't seem to have any issue with what I returned.
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