12V Laing DDC-1T+ Ultra 18W (MCP355)

manisinghb · 29 Dec 2010 at 14:58

Hi guys, so I was cleaning out the system and put everything back together with everything in perfect working order. I left it on overnight to see if there's any leaks etc before I hook it up to all the components (mobo, cpu, etc.) just to be on the safe side, as is procedure. Anyway, I check in the morning, and the water from the reservoir has gone considerably low, a little water on the floor, and the pump isn't working no more! The water leaked due to a loose fitting, but I tried and I tried to fix the pump but to no avail, it's 'knackered'! The only explanation I have for this is that the water from the reservoir totally leaked out and so the pump ran dry for a bit and just broke, and some water from the radiator above dripped into the reservoir, which is why there was still a little water in there in the morning...
I connected the 3 and 4 pin connections on the pump to the many connections from the PSU but nothing. Everything else on the system is working, I should mention that the display on the fan controller was a little distorted but when I reconnected wirings it's running fine now. Just found that a little weird :confused:

I'm trying to now look around for a pump (12V Laing DDC-1T+ Ultra 18W (MCP355)). But I just need the PUMP, everywhere I look they are selling the reservoir with it too. Anyone know where I can just get the pump ONLY or even any how I can check to permanently rule the demise of my pump??

Jokester · 29 Dec 2010 at 15:03

Nobody is going to be able to tell you I'm afraid as any company would be a competitor. But yeah, you can't run the DDC pumps dry for any length of time.

manisinghb · 29 Dec 2010 at 16:04

ok I have some developments:

Took the pump out completely off it's housing too. Connected it up and the rotor spins for a milli-second. However, when I push the rotors myself the pump works fine! It's only when I push the rotors though that it works.

littlepuppy · 29 Dec 2010 at 16:09

Does shaking it have the same effect?

Maybe needs a good run with water

manisinghb · 29 Dec 2010 at 16:42

littlepuppy said:
Does shaking it have the same effect?

Maybe needs a good run with water

No shaking doesn't do nothing I'm afraid. I am suspecting the circuit board on the bottom of the pump. I gave it a dry and ran a hairdryer over the whole thing. Now it seems to want to work a little, it's worked by itself twice now. How shall I give it a run with water? Just thinking I should submerge the pump into the water (and obviously keep the circuit board out)

Phoenixdancer · 30 Dec 2010 at 02:38

manisinghb said:
No shaking doesn't do nothing I'm afraid. I am suspecting the circuit board on the bottom of the pump. I gave it a dry and ran a hairdryer over the whole thing. Now it seems to want to work a little, it's worked by itself twice now. How shall I give it a run with water? Just thinking I should submerge the pump into the water (and obviously keep the circuit board out)

No no no

Rebuild it.

Attach hose to it and have it pull water from a bucket and dump back into bucket

If it keeps running for more then 5 hours then its fine.

Personally I would put it in a bowl of rice for 2 days when in bits

manisinghb · 30 Dec 2010 at 15:49

Phoenixdancer said:
No no no

Rebuild it.

Attach hose to it and have it pull water from a bucket and dump back into bucket

If it keeps running for more then 5 hours then its fine.

Personally I would put it in a bowl of rice for 2 days when in bits

It just doesn't work when I fill it up with water.

Excuse the ignorance, but what purpose is the bowl of rice technique for?

piggin · 30 Dec 2010 at 17:33

The rice will dry things out.
Is there fluid inside the pump were the circuit sits. If there is then its U/S.