MCP 600 problems?
 

Howdy, i'll directly quote my post from ocau forums. it was suggested for me to post here as BillA reads these and might find this interesting:

well, i thought the reason for my high temps lately was my res was heating up from the sun light coming thru onto it from the window, try as i might i couldnt reduce the high temps so i dipped my hand in the water, warm as piss. tubing was warm aswell, the hottest thing of all though? the swiftech MCP600, im now running a 92mm fan behind the thing and i've knocked about 10-15c off my load temps and the water is cool to the touch now, so beware i spose.

Can you post a picture of the cooling loop? It seems to me you'd almost have to be nearly dead heading the pump to get it to overheat like that unless you have a defective one. My MCP600 runs cool to the touch.

It's only 9W; something is wrong in my opinion.

sorry no cam for pics, but; the pump is right near the bottom of the large 28L res, so it primes it self with the gravity driven pressure. i read the advice before i installed it that was saying not to restrict the inlet. after the pump it goes straight up about 30cm to my mcw5000p then it loops down to my mcw50 on the radeon, then across to the radiator, then into the res... from there the loop starts again.

the pump head is in contact with the motor frame only at its mounting flange, difficult to understand how the heat could be transferred to the coolant
??

in any case, the pump should not be hot to the touch - a bit warm at the most, but certainly not 'hot'
- stick a thermometer on it ? (what does 'hot' mean ?)

a pinched line ?
agree something is wrong, not convinced the pump is the cause at all
perhaps a radiator would help ?
not gonna dissipate much heat from a tank !

Says he has a radiator; made me do a double take tho Bill. I am a bit perplexed at this problem as stated

whoops
missed the rad

well, how big and what fan ?

Mind you, he does live in Bendigo*. Bendigo, being in central Victoria has been going through somewhat of a heat-wave recently where 35-40C temperatures are being experienced during the mid-Spring season, so any human-feel based measures of warm/hot must be considered to be relative to ambient temperatures that are also considered hot by human standards.

That's not to say that there isn't an issue here, just that without a room temperature reading, a water temperature and external pump temperature, it may be a little hard to figure out what's going on. If the pump's body is warming up to 15C above ambient, then it will feel warm in a 20-25C room, and very hot when in a 35-40C room.

* - Bendigo - heart of anthrax country if a recent episode of "Law & Order" is to be believed where millions of Australians are immunised against the disease. Bendigo has a regional population of about 200,000 people. In the past 10 years there have been two reported cases of Anthrax in humans Australia-wide, and none in the Bendigo region. Australians are not immunised against anthrax in any way.

^catalyst,

Can you measure the current the pump draws?

That should give some indication of whether the pump is running normally.

i have an '87 camry heatercore (BA) with 2 x 120mm papst 100CFM's on it running thru a vantec nexus on dead low. the rad is always fairly 'cold'. the pump isnt inhibited at all, about 4" of tubing to the pump from the res. i dont have a multi-meter but i am looking @ getting one shortly, i must measure the current it draws. the tubing is all 1/2" ID clearflex60, with built in lime deposits which i still havent formulated a plan to rid myself of. however my girlfriend is a science student and she suggested bi-carb soda... not in my loop! i tried it on some tube i had cut which had been used and had the so called lime buildup, it seems to reduce it somewhat, probably needs some flow or some sort of scrubbing to work best.

edit : pump hasnt made any differenent noises since i got it, and its only just started getting warm.

"lime deposits" ??
wtf
are you using a corrosion inhibitor ? if so what, and in what concentration ?
-> and you are using Swiftech products so you had better be using an inhibitor

how on earth do you expect your rad to function if its tubes are covered with "lime deposits" ?

jeez
try "Pinesol", or a strong cleaner with phenol

EDIT: "only just started getting warm" ??
I have not managed to be present when one of these pump heads had a (thrust bearing) failure.
I have heard that there was a brief period of noise, others said the pump just ceased pumping. ??
No one has reported the motor getting hot.
- And as I said earlier, doubt the motor can input that much heat.

Keep an eye on the pump, but suggest you clean out your system.

yes i am using a corrosion inhibitor, check the OCAU forums, many people are getting these deposits in there clearflex...


im using 'tectaloy' anti-freeze/anti-boil corrosion inhibitor concentrate. mixture is about 15:85 CI+DW.

no idea what it might be
does phenol clean it up ?

vinegar!
 

i'll have to get some and try it, bi-carb soda has a slight effect on it, but it really needs to be scrubbed with it to make it go away, which defeats the purpose of using it to inhibit the deposits. what common products have this phenol in them? bare in mind im in australia so our brands might not be the same. also can you get this phenol on its own from a hardware store or anything?

been testing some stuff around the hose, looks like brown vinegar is doing the most against those deposits!

ok, i've added the vinegar to the loop after leaving a piece of tube half-in half-out of vinegar for about 2 hours and observing a reduction in the amount of build-up, reading

http://scifun.chem.wisc.edu/chemweek...ceticAcid.html

seems like vinegar shouldnt hurt much, ocau'er mjolinir said it might not be great for long term use, but i plan to re-fill the loop in the next week or so. I'll let you all know how that goes. MCP600 has been fine for a while now. i dont feel it was warmed by the ambient temperature because the temperature has since been higher and not caused the pump to get as hot as before... time will tell.

read this
thread

MCP 600 Problems As well
 

I built my first water cooling system i was inticed by the ease of installation when using an MCP 600 but i have had nothing but problems with the pump. I might add that the customer service has been absolutely great. But unfortunately I am on my third pump and it just stopped working. I use the machine in my office and just wanted to keep the noise down on the duel xeon cpu. Those CPU fans really scream!!! I am guessing i am going to have to go with Johnson 12v pump???? or Should I RMA one more time???

i suggest u get in touch with swiftech and ask them for the new and improved impeller assembly. the motor it self might not be dead.

Lime deposits seem to be the 'de riguer' for clearflex... as mine went all milky after maybe 1 week.... its just in the tubing too, nothing anywhere else.. very weird...

Hope you fix your prob cata mate..

well, the mcp600 stopped working for me... i'll let you guys know what BillA thinks once i've got a PM.

My new MCP 600 is suppose to arrive today will see how long it lasts

a forum is not the place for RMAs
overseas purchasers must contact their reseller
a PM was sent saying this

thanks for the reply bill, i'll forward that info on to the relevant parties. i'll also give you som emore info on that particular fault.

I just recieved the new Pump Head and all looks good it has been running now for about 24 hours with no problems. my temperitures on my cpus seem to be stable and all seems to be flowing well I am crossing my finger i hope this pump last for a long time.

At the risk of getting flamed, anyone consider a Johnson CM30P7-1 yet? I know they're pricey, but they're tough --it's the only pump that can be steam-cleaned. They're used in superchargers after all... Bit bigger than an MCP 600 though, and sure runs hotter --about 53 C (but does not pass this on to the coolant).

this isnt a flame, but mate this thread is about the MCP600, not about what pump to buy. maybe you could start a new thread about other pumps?