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Old 05-26-2009, 04:16 PM   #1
baer19d
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Default March pump problem

I've been using a march pump for about a year and a half now and I'm convinced that it's a piece of crap. No matter what I do it will only reliably pump liquid if it's gravity fed to the pump. When pumping "up hill" it might take me 20 minutes of priming to get a good flow. Is this a normal problem for this pump or is it just me? Maybe I don't fully understand the limitations of a pump, but I woud think that the whole purpose of one would be to move liquid from point A to point B dispite the Law of Gravity. I mean' if what I'm trying to move (liquid) could be gravity fed than I wouldn't have bought a $130 pump. Thanks, Mike

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Old 05-26-2009, 04:22 PM   #2
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Do you prime the pump before turning it on?

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Old 05-26-2009, 04:35 PM   #3
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Not sure how you have the pump "sitting" but I would suggest doing an "east - west" orientation as opposed to the "north - south" so many here seem to use. I had much better results that way.

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Old 05-26-2009, 04:40 PM   #4
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Yes, I prime the pump every time

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Originally Posted by schweaty View Post
Do you prime the pump before turning it on?
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Old 05-26-2009, 04:42 PM   #5
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I have it positioned East to West.

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Originally Posted by Kilted Brewer View Post
Not sure how you have the pump "sitting" but I would suggest doing an "east - west" orientation as opposed to the "north - south" so many here seem to use. I had much better results that way.
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Old 05-26-2009, 04:46 PM   #6
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are all connections tight? the pump must be below the level of the feed side since it's not designed to pull from a vessel only pump up to one. how high are you trying to pump up?

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Old 05-26-2009, 05:04 PM   #7
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It will pump a 12' ft head if I recall correctly, but the pump has to be mounted below the source. It is a magnetically-coupled impeller pump, so it is not designed to generate much pressure (~5 psi max) and also can't pull much suction.

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Old 05-26-2009, 05:11 PM   #8
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Man, I dunno.

I have mine mounted:



Motor UP
Head DOWN
Inlet to the LEFT
Outlet to the RIGHT

Unconventional, but I have never had the issues that so many have priming these things.

One thing that I would recommend is NOT hard plumbing these things in. I find that some silicone hose and QDs so that you can fill the line with water, via gravity, goes a LONG way to easy priming.

It takes me about 10 seconds to prime my pump for a brew session, after it is primed, I dont have to prime it the rest of the day.

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Old 05-26-2009, 05:46 PM   #9
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Than the design of the pump is my problem. I guess it's not meant to do what I'm wanting it to. Tanks for the help, Mike

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Old 05-26-2009, 05:48 PM   #10
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What is it you're trying to do?

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