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Pump issues

post #1 of 2
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Sooo i just finished my dual loop setup last night and now im having a problem with my cpu only loop. I'm cavitating the pump somehow and i cant figure out how. Loop is pretty simple its Reservoir --> Pump --> Radiator --> CPU --> Res. I took both pumps apart to clean them cause i was using feser one coolant before and it gunked everything up so i switched to distilled + kill coil...is it possible i put the pump back together wrong? I mean its one of the easiest pumps to take apart and put together imo. It's a swiftech mcp 655-b(non-variable). I've shaken it up and thrown this thing all over trying to get the air out but im not sure thats the problem anymore. Reservoir is also the EK Dual loop bay res. Let me know what you guys think it could be
Blood Thirsty
(11 items)
 
  
CPUMotherboardGraphicsRAM
i7 3820 @ 4.75 Asus Rampage IV Gene EVGA 680 FTW+ 16 GB Vengeance 2333 Mhz 
Hard DriveCoolingOSMonitor
[256 GB Crucial M4][600 GB Momentus-XT Raid-0] Corsair H100 Windows 7 Ultimate 3x BenQ xl2410t 6080x1080 
PowerCase
Seasonic X750 Corsair 600T SE 
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Blood Thirsty
(11 items)
 
  
CPUMotherboardGraphicsRAM
i7 3820 @ 4.75 Asus Rampage IV Gene EVGA 680 FTW+ 16 GB Vengeance 2333 Mhz 
Hard DriveCoolingOSMonitor
[256 GB Crucial M4][600 GB Momentus-XT Raid-0] Corsair H100 Windows 7 Ultimate 3x BenQ xl2410t 6080x1080 
PowerCase
Seasonic X750 Corsair 600T SE 
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post #2 of 2
I was starting up my mcp650 last night after not using it for about 5 years or so, and man was it a pain getting it going without having an actual loop completed and a real reservoir above the pump to feed it. It seemed to absolutely need babying in regards to having water on it. I would make sure that there is definitely no air in the pump cavity, maybe even siphon water into the pump with your mouth.

I just know, after playing with it last night, that at least with my mcp650 if there is any hint of air anywhere near the pump, it was useless. Also, make sure your plug is plugged in the right way. For whatever reason, the molex I plugged in allowed it to be plugged in the wrong way the first time I plugged it in, so it ran, just at low voltage (or at least that's what I think happened. It was giving out really low flow, so I took the pump apart to check for debris, but it was clear, and when I plugged it back in again, it took off running normally).

The pump was insanely easy for me to take apart last night. You can certainly try to re-seat the impeller and seals and see if that makes a difference. Other than it being a pain to do on a filled loop, I can't see too much going wrong by re-seating it.

Good luck, hope you find out what the problem is.
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