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I had to separate the top from the motor on my blue impeller Lanning ddc pump as it simply stopped working. Installing an inline amp meter showed no current flow. I had a black impeller motor so I simply put the black impeller motor to the old top and I was back in action. What I noticed is the Lanning ddc uses the same motor design that the 655 uses. I recently had one of my 655 style pumps taken apart (really it was a Koolance PMP-450). The motors looked almost identical (slightly larger stationary part in the Koolance motor).What struck me (besides having a failure at all with the blue impeller pump). is how the Koolance PMP-450 is so much bigger overall but with basically the same size motor. Everyday I work with this stuff I discover something new (or at least new to me). I also notice that the PMP-450 has a sticker on it that says "max fluid temp 60C". This pump is used to cool a i7-930 that very easily reaches 60C.This sticker gives me a reason for wanting to know what temp water was the blue impeller pump exposed to. I realize that simply because my cpu is at 60C this does not mean the coolant was also at 60C (or above). I wish I could figure out who I bought the blue impeller pump from as I read the warranty is very good.
WC Rig
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CPUMotherboardGraphicsRAM
i7-930@4.05GHz ASUS P6X58D-Preminum XFX GeForce 275 896mb 6GB Corsair TR3X6G1600C8D 
Hard DriveOptical DriveOSMonitor
WD 150gb Raptor LightScan Win 7 64-bit Acer 22" 
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G15 Corsair HX620W Antec 1200 several various 
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WC Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-930@4.05GHz ASUS P6X58D-Preminum XFX GeForce 275 896mb 6GB Corsair TR3X6G1600C8D 
Hard DriveOptical DriveOSMonitor
WD 150gb Raptor LightScan Win 7 64-bit Acer 22" 
KeyboardPowerCaseMouse
G15 Corsair HX620W Antec 1200 several various 
Mouse Pad
none 
  hide details  
Reply