Water Pump going out both ways

[scotter1995]

So I'm in a bit of a bind. I'm a fresh alumnus building a PC for my old high school, and its supposed to be a one pc, two oculus build using unraid. We're using two 1080s, and an I-9 9-7940x. When I left two weeks ago, the build was going swimmingly, but yesterday I got a call telling me that the PC's water loop using the EK-XTOP Revo Dual D5, wasn't working. I come in today and see that the pump is now going out on the inlet, and out on the outlet for some reason, despite it working wonderfully last week when we flushed the loop out with distilled water. Saying its running in reverse may be a misnomer though as it feels like its just not pumping at all; please do help as the school board is visiting on Tuesday and for some reason, I feel responsible for this PC working.

 

[MrShinny]

Are you sure it is going out both ways?

[Neftex]

is it possible that connection to power got reversed and that would make the pump work the other way?

[scotter1995]

5 minutes ago, MrShinny said:

Are you sure it is going out both ways?

 

[scotter1995]

1 minute ago, Neftex said:

is it possible that connection to power got reversed and that would make the pump work the other way?

that would mean the molex connection is screwed up, which is practically impossible to fuck up since the connection is so universal, it'd be like plugging a usb in upside down.

[jj9987]

It's not possible to go out both ways, it needs to get the liquid from somewhere. What fluid is that, maybe it just visually looks?

Are your temps fine? If yes, I don't see a reason to worry at all.

 

Even if the flow was other way around, it wouldn't be a problem. The liquid moves fast enough that loop order doesn't matter.

[Neftex]

i checked the pump is some pwm regulated one, maybe its not running with enough power? also i see the radiator fans arent spinning

[For Science!]

26 minutes ago, scotter1995 said:

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As mentioned, it is unlikely your pumps are working against each other. I reckon you just have a slight reduction in flowrate and visuals by the Primochill Vue starting to misbehave. I wouldn't try to determine the direction of flow by visual inspection of a rheoscopic fluid, it can be confusing particularly close to the pump where its "sucked in".

 

Going to 100% Duty cycle and making sure you don't have really bad clogs in your blocks would be my recommendation.

 

[Neftex]

just googled "primochill vue clog", yikes

[MrShinny]

Why would you build a water cooling loop for your school anyways? Research purposes?

[scotter1995]

7 minutes ago, jj9987 said:

It's not possible to go out both ways, it needs to get the liquid from somewhere. What fluid is that, maybe it just visually looks?

Are your temps fine? If yes, I don't see a reason to worry at all.

 

Even if the flow was other way around, it wouldn't be a problem. The liquid moves fast enough that loop order doesn't matter.

I've had to disable every core but the first w

[scotter1995]

14 minutes ago, MrShinny said:

Why would you build a water cooling loop for your school anyways? Research purposes?

More like bringing in prospective students that are interested in 3D design. Having "The worlds only DUAL BOOT VR HEAD SET EX-TREME SETUP iN THE wOrLd!1!11!" kinda stands out when you're taking a tour.

[scotter1995]

34 minutes ago, For Science! said:

As mentioned, it is unlikely your pumps are working against each other. I reckon you just have a slight reduction in flowrate and visuals by the Primochill Vue starting to misbehave. I wouldn't try to determine the direction of flow by visual inspection of a rheoscopic fluid, it can be confusing particularly close to the pump where its "sucked in".

 

Going to 100% Duty cycle and making sure you don't have really bad clogs in your blocks would be my recommendation.

 

I've tried plugging in each pump individually and they both behave the same with no change in temps whatsoever. I'm pretty sure I need to fix something with the pumps

[MrShinny]

The pumps could not be getting enough power. Do you have enough wattage coming from the PSU to power everything?

[scotter1995]

2 minutes ago, MrShinny said:

The pumps could not be getting enough power. Do you have enough wattage coming from the PSU to power everything?

There is definitely enough power going to the PC.

[For Science!]

8 minutes ago, scotter1995 said:

I've tried plugging in each pump individually and they both behave the same with no change in temps whatsoever. I'm pretty sure I need to fix something with the pumps

I'm not sure if I missed something but I assume "no change in temps" indicate that you have very bad temperatures? This indicates to me that you have little-to-no flow in your system. Two D5's is completely overkill for two GPUs and a CPU block, and one D5 should be more than enough to push fluid around the whole system.

 

The fact that you have tried one pump and another means that you have taken the "two pumps working against eachother" theory out of the equation. Since you have stated that it used to be fine, I am going to just hypothesize it is the vue going bad in your system, it is completely normal for it to precipitate out within a few days for some users.

[scotter1995]

35 minutes ago, For Science! said:

I'm not sure if I missed something but I assume "no change in temps" indicate that you have very bad temperatures? This indicates to me that you have little-to-no flow in your system. Two D5's is completely overkill for two GPUs and a CPU block, and one D5 should be more than enough to push fluid around the whole system.

 

The fact that you have tried one pump and another means that you have taken the "two pumps working against eachother" theory out of the equation. Since you have stated that it used to be fine, I am going to just hypothesize it is the vue going bad in your system, it is completely normal for it to precipitate out within a few days for some users.

So RMA the pumps?

[MrShinny]

15 minutes ago, scotter1995 said:

So RMA the pumps?

The vue could have clogged the pumps. It isn't likely that it did it so quick, but you don't want to rule it out.

 

Another thing that could have happened is that you ran the pumps dry, (without fluid in them) while filling, which will destroy the pumps. I highly doubt two pumps went bad at the same time with no user error. Check to make sure you are connecting the tubing all the blocks and rads in all the right holes, as some brands have specific in and out holes.

[scotter1995]

54 minutes ago, MrShinny said:

The vue could have clogged the pumps. It isn't likely that it did it so quick, but you don't want to rule it out.

 

Another thing that could have happened is that you ran the pumps dry, (without fluid in them) while filling, which will destroy the pumps. I highly doubt two pumps went bad at the same time with no user error. Check to make sure you are connecting the tubing all the blocks and rads in all the right holes, as some brands have specific in and out holes.

I just traded the PSU on both pumps, along with MOBO fan monitors on bo0th at each possible interval, then tried reversing them, and the same outcome came out. I'm pretty sure the pumps are dead and that's it. So yeah thanks.

[MrShinny]

1 minute ago, scotter1995 said:

I just traded the PSU on both pumps, along with MOBO fan monitors on bo0th at each possible interval, then tried reversing them, and the same outcome came out. I'm pretty sure the pumps are dead and that's it. So yeah thanks.

Did you run them dry when filling the loop for the first time?

[For Science!]

1 hour ago, scotter1995 said:

So RMA the pumps?

No, teardown the system, open the blocks, clean the blocks, use a fluid that is not just a show fluid, and then re-test.

[For Science!]

I would say your system is in quite a dangerous state if a block is clogged to the extend that it is cause fluid to go backwards during pump cycles. This means if any O-rings give up, you're in for a massive fountain. There is plenty of good reason to believe your Vue is in super bad shape, I would recommend you clean your system immediately and choose a more sensible fluid for the application.

 

While you're at it you could enlighten us with a few of the things you did before you added Vue:

 

- What fluid did you use before adding Vue?

- What cleaning agents did you use to pre-treat your system before using Vue?

- How many hours a day was the system on for before the issue started?

 

 

 

 

 

2 hours ago, scotter1995 said:

 

[scotter1995]

17 hours ago, For Science! said:

I would say your system is in quite a dangerous state if a block is clogged to the extend that it is cause fluid to go backwards during pump cycles. This means if any O-rings give up, you're in for a massive fountain. There is plenty of good reason to believe your Vue is in super bad shape, I would recommend you clean your system immediately and choose a more sensible fluid for the application.

 

While you're at it you could enlighten us with a few of the things you did before you added Vue:

 

- What fluid did you use before adding Vue?

- What cleaning agents did you use to pre-treat your system before using Vue?

- How many hours a day was the system on for before the issue started?

 

 

 

 

 

so clean out the precipitate, then try to refill to completion? 

[AngryBeaver]

11 minutes ago, scotter1995 said:

so clean out the precipitate, then try to refill to completion? 

What he is saying is this.

 

Tear it ALL down. Open up the blocks and clean them out. Take out the rads and flush them with boiling hot water and then do the rad dance. Consider tossing the tubing and using all new. After you have cleaned out all the components to the best of your ability then run a cleaning solution that is safe for your setup for 24/48 hrs. Then give it a good flush with distilled . After you have done all of that, fill it with a NORMAL coolant. No show fluids like vue, they are only going to cause issues. If you want someone with nano-particles  then consider something like pastel, but that is about as fancy as I would recommend going.

[scotter1995]

20 minutes ago, AngryBeaver said:

What he is saying is this.

 

Tear it ALL down. Open up the blocks and clean them out. Take out the rads and flush them with boiling hot water and then do the rad dance. Consider tossing the tubing and using all new. After you have cleaned out all the components to the best of your ability then run a cleaning solution that is safe for your setup for 24/48 hrs. Then give it a good flush with distilled . After you have done all of that, fill it with a NORMAL coolant. No show fluids like vue, they are only going to cause issues. If you want someone with nano-particles  then consider something like pastel, but that is about as fancy as I would recommend going.

While I understand I have to go through the trudging work that is cleaning out and flushing the system, I, unfortunately, have to decline the whole "use normal coolant" bit. Using VUE is actually a requirement by the builds standards. This thing has to look "pretty" and one of the only ways we got the budget for this kind of build was pitching the idea of this coolant.