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Apr 8, 2011 9:33 AM in response to madroadbikerby madroadbiker,I found out what I was doing wrong. The current limiting on my power supply was the problem all along. Apparently the current required to start these pumps is quite high - on the order of 8 or so amps! So limiting the current to 2 amps like I was doing would not allow the motor enough starting current. When I removed the current limit, it started and ran just fine. Interesting enough, while it's running, it only draws about 0.7 amps which is about what the spec that comes with it says. The spec says nothing about starting current. I was so afraid of burning this thing up that I over compensated by limiting the current. Lesson learned and thought I'd pass it on. -
Apr 8, 2011 11:22 AM in response to madroadbikerby BDAqua,Great work, thanks for the report, good to know about that starting current! -
Apr 8, 2011 10:59 PM in response to madroadbikerby romko23,Hello,
Mind me asking what G5 you own? Is it a Quad like I have and BDAqua? Also, where can I get this pump if I ever ever need to replace a dying pump in my Quad? I really don't wanna think about this, as I have the revision 2 pump and I have never had leak problems with my LCS system; I don't even wanna think about it! -
Apr 9, 2011 9:27 AM in response to romko23by madroadbiker,It's a dual processor G5 manufactured in 2004. You can get the pump from
http://www.newegg.com/Product/Product.aspx?Item=N82E16835108063&Tpk=mcp350 -
Nov 1, 2011 6:23 AM in response to madroadbikerby NickSloan,Hi madroadbiker,
when replacing your G5 (Delphi?) pump with the new MCP350, do you remember how you wired it to go from three wires to four?
I have just got a Laing pump, which should be identical to the Swiftech. It has three wires (black/blue/yellow = ground/tacho/12V) and a blank connection on the PCB. I'm wondering if that blank could go straight to the fourth wire and provide variable speed control?
Other threads speak of a bridge between two pins on the PCB, one of which is the 12V and the other the variable speed, but my PCB (DDC3.1) just has a blank connection at position 3 as you look at it. Any info would be much appreciated.