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silverspoons
Joined: 21 Dec 2010 Posts: 555 Location: Webster NY
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Link Posted: Sun Oct 09, 2016 3:20 pm Post subject: Mashout circulation problem |
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This has happened lately, but not all the time..
when its time to mashout, i raise the temp of the HLT on the PID to 170. ( my mash runs with a 2 degree differential ) to achieve my 168 mashout temp. the HLT temp rises as expected but when the temp reaches about 165 i get circulation problems through the coil.
the pump is running and primed but no circulation. i turn off the pump and then turn it back on and it pumps for about 10 to 15 seconds then no more suction. the hose has a little "jump" and then its not working. only happens during mashout and not all the time
any ideas?
thanks
silverspoons
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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silverspoons
Joined: 21 Dec 2010 Posts: 555 Location: Webster NY
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Link Posted: Sun Oct 09, 2016 5:52 pm Post subject: |
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Hi Kal
its not the mash that stops flowing its the HLT water through the coil
March pumps
Silverspoons
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Ozarks Mountain Brew
Joined: 22 May 2013 Posts: 737 Location: The Ozark Mountains of Missouri
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Link Posted: Sun Oct 09, 2016 6:58 pm Post subject: |
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not sure but it sounds like the pump is losing its magnetic hold on the head, this happens to me a lot at warmer temps, I have to reduce the ball valve and it works
_________________ "Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."
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silverspoons
Joined: 21 Dec 2010 Posts: 555 Location: Webster NY
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Link Posted: Sun Oct 09, 2016 7:07 pm Post subject: |
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Thanks Ozarks.. I give that a try next weekend
Silverspoons
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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silverspoons
Joined: 21 Dec 2010 Posts: 555 Location: Webster NY
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Link Posted: Sun Oct 09, 2016 9:34 pm Post subject: |
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Did that the last time it happened and everything was fine.. i might switch pumps the next time
Silverspoons
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Ozarks Mountain Brew
Joined: 22 May 2013 Posts: 737 Location: The Ozark Mountains of Missouri
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silverspoons
Joined: 21 Dec 2010 Posts: 555 Location: Webster NY
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Link Posted: Mon Oct 17, 2016 9:18 pm Post subject: |
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Same thing happened yesterday. At about 162 degrees the HLT pump shut down, ( motor running; impeller not spinning). Took the pump apart and it had some water deposits on the impeller but it spun nicely. Cleaned it up, put it back together and ran a test this morning with just water.. At 160 the impeller stopped spinning. I ordered a new impeller this afternoon. We'll see if that is the problem.
thanks for the suggestions
Silverspoons
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mcl
Joined: 11 Oct 2011 Posts: 155
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Link Posted: Tue Oct 18, 2016 1:52 pm Post subject: |
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Just to add. I get that with my water pump at any time in the process. I have to keep the output valve more closed than I have to on the wort pump (still mostly open). I just assumed it was a little more temperamental.
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11116 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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mcl
Joined: 11 Oct 2011 Posts: 155
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Link Posted: Tue Oct 18, 2016 2:11 pm Post subject: |
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Mine are march center inlet (poly head). It really doesn't affect me much. I know where to put my valve and that has stopped the issue for the most part. Early on when I had my system I did do an early mashout as my HLT temp was much higher than the PID was seeing.
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Ozarks Mountain Brew
Joined: 22 May 2013 Posts: 737 Location: The Ozark Mountains of Missouri
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Link Posted: Tue Oct 18, 2016 3:17 pm Post subject: |
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I have the chugger pumps and after close inspection the issue is not the impeller, its the magnet and its alignment, my magnet slightly wobbles and you can feel it in your hand when plugged in, I also found that its an 1/8" from the plate when assembled
_________________ "Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world."
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silverspoons
Joined: 21 Dec 2010 Posts: 555 Location: Webster NY
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Link Posted: Tue Oct 18, 2016 4:16 pm Post subject: |
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I have march pumps.. over 6 years old and closing in on 200 batches. I'll install the new impeller and go from there.
Silverspoons
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silverspoons
Joined: 21 Dec 2010 Posts: 555 Location: Webster NY
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Link Posted: Wed Jan 04, 2017 8:32 pm Post subject: |
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Update on March pump problem..
Hans at March pumps suggested a new impeller, he said they can wear out and at higher temps loose magnetic contact as suggested earlier. I replaced the impeller, brewed a batch today and everything worked as expected.
Silverspoons
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