DDC-2 Dies

[sreedx2]

@Petra


Keep us updated

[Erydin]

How can you tell if your pump is not working? I mean before bad things start happening to your rigs innards. Is there a way to monitor the DDC-2 so that if it slows down or stops you can get a warning of some type?

Erydin

[Petra]

How can you tell if your pump is not working? I mean before bad things start happening to your rigs innards. Is there a way to monitor the DDC-2 so that if it slows down or stops you can get a warning of some type?

The pump has a 3-pin tach. output that you can use for impeller RPM monitoring. Hypothetically, you could set your computer up to treat a drop in impeller RPM (below a specified threshold) the same way it would a CPU fan malfunction/failure.

[sreedx2]

How can you tell if your pump is not working? I mean before bad things start happening to your rigs innards. Is there a way to monitor the DDC-2 so that if it slows down or stops you can get a warning of some type?

Erydin

I have speed fan execute a program called super fast shut down which turns off my pc almost instantly once my core temp reaches a certain level

I was going to set it up so if the pump rpm slows or stops .. but they always fluctuate so I just chose a cpu core temp which is higher than my cpu temp would ever get to once the core reaches that temperature my computer shuts off.

I also tested this first with a lower temperature and just turned off my rad fans to watch the program go to work ..

[Pete]

I got my DDC's yesterday and been playing. Had one set just pumping round on it;s self. I've done the 18w mod too. It got to 34.5c and then i though sod that. Thats it sat in my V2000B middle floor no fan or anyhting in the case and wth about 16'' of hose to make one loop...

Cooling i think is needed

[sreedx2]

I got my DDC's yesterday and been playing. Had one set just pumping round on it;s self. I've done the 18w mod too. It got to 34.5c and then i though sod that. Thats it sat in my V2000B middle floor no fan or anyhting in the case and wth about 16'' of hose to make one loop...

Cooling i think is needed

18W mod, can you elaborate on that

[Pete]

PCB REV 3.3 has 1 blank solder pad, join the yellow feed over and you get 18w.

See here

UK seams to of only just got the new revs and not sure about you guys states side

[sreedx2]

I gotcha, I have no 18w already

[Pete]

It works, it's fun and just make sure you got hose in the water not in ya crutch as my kids would not stop going on that daddy had wet him self!

18 is £60+ here and a 10W was on offer for £32 and 2 mins with soldering iron i'm happy.

Just miffed one came broken on the mounts on the side but it as been used as has water inside it

[Walternowi]

The pump has a 3-pin tach. output that you can use for impeller RPM monitoring. Hypothetically, you could set your computer up to treat a drop in impeller RPM (below a specified threshold) the same way it would a CPU fan malfunction/failure.

I remember reading here a while back that someone hooked up the 3-pin tach. output to a T-Balancer and used the T-Balancer to monitor the RPM and shut down in case of emergency. I could only find the T-Balancer for sale in the U.S. here:

http://www.performance-pcs.com/catal...ducts_id=20837

[Maviryk]

Add me to the list of people with modified tops which died...

[Terryb47]

what happened to yours, was it 'new' too?

I really can't decide if I should replace my DDC for a DDC, or go with a D5 now..

[Maviryk]

I'm not sure how old it is, but I've had it since September (bought it used). It has the red/orangy impeller. Been paired with Petra's since October, just died today.

I booted up my PC at lunchtime today and noticed it was awfully calm in my radiator(what attracted my attn was the sound of the pump trying to start). Haven't taken it apart yet, but I'll do that when I get back from work tonight.

[Maviryk]

Huh, I whacked my pump with a hammer and it started right back up.

[ziddey]

sounds like what I did to get it started too

[Cronos]

Is "REV2" in the "Danger Den - DDC-12V REV2 "PLUS" "
http://www.dangerden.com/store/produ...5&cat=4&page=1
refer to the new revision of 18W DDC (with new impeller and circuit board), or just to the new DDC revision with 18W (as compared to 9W) ?

[Teecee]

Add me to the list of dead Laing pumps with a petra top. Bought it in Nov. 06, installed in Dec. 06, died tonight at 4/1/2007. PC shut off due to CPU temp. I hope this bad pump didnt fry my e6600. Sent an email to alex at Petra. I hope to get a new one, but will the new one just die on me too? My 2 year old DD pump has been going strong on my other system.

[SiGfever]

I have my replacement DDC-2 w/ "un-modded" Alphacool top ( I ordered a new one which DID NOT come with rubber isolation bushings! ) running in my rig now. I chose to mount this one with the impeller up and have a D12SM-12 blowing across it. I mounted it in the back of the case in front of the bottom fan over top of the power supply, yea I know if it were to leak I WILL let the "Magic Smoke" out of the power supply.

Even though this fan puts out more cfm than the D12SL-12 that was blowing on the bottom of the prior mount, the bottom of the pump from the prior mount was much cooler.

[shikuva]

My ddc 2 <Laing DDC w/ Petra'sTech DDCT-01s Top Combo> die in 4 days
I recive from 28-3-2007 now today it die already .
use for 8-10 hours per day .first time i not have see this topic . I Order & pays already . anyway i read this topic seem 5% die but why happen to me T_T . long way to buy <I live in THAILAND> .

OMG what i have to do .

[Nosfer@tu]

Mine stops if it dosent have a 120 mm fan in front of it, dont think that has anything to do with miss usage!

and I have to Buy a new one so I can sent the old one to RMA.
Cant be bothered to send it back and change back to air.
Simply a waste of time.

[Maviryk]

I think it has to do something with the pump itself, not the tops.

The old 18w DDC I had became very hot when running, but the new one I have is cool to the touch, it's had no problems at all for a while now.

[Petra]

I think it has to do something with the pump itself, not the tops.

Laing won't admit to it, but I'm guessing that's one of the reasons why they went ahead with the complete redesign of the pump's motor for the DDC-3 series.

*edit* when I get back to San Jose, I'll shoot an e-mail off to my contact to double check if the MTBF for the DDC-2 is a continuous runtime rating or not... I have a hunch.

[Borgod]

I ordered 2 DDC+ at seperate intervals, both fitted Petras top last week. One works nicely that is silent, the other sounds like it has rocks inside or the bearing are shot.

Completely random.

[Cronos]

Laing won't admit to it, but I'm guessing that's one of the reasons why they went ahead with the complete redesign of the pump's motor for the DDC-3 series.

Most certainly.

Also, i think that under certain conditions the pump with aftermarket tops and high ID tubing may has prolonged power drain much higher than typical 18-24W.
The pump drains around 48W at startup, then impeller is rotating at low speed. If, for some reason, impeller is stuck, or takes long time to spin at full speed(typical for high ID tubing/high water capacity loop), it may result in pump motor overheat and possible damage.

By the way, having two pumps in series reduces load on each pump and increases their life expectation.

[Terryb47]

Well I got my replacement MCP355 today, hope this one will last longer than a week

hopefully a few years at least.