I have been working hard to dial in our new brewhouse, 20 hl, BTE. After approx. 30 brews, I still cannot get the clarity I want out of my wort. We have a variable speed recirculation pump that pulls from the bottom of lauter, and returns through a goose neck. I am absolutely open to any suggestions on length of time for recirc., speeds, temperatures, or anything else I may not have considered. Im all ears. Cheers.
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particles in suspension
I am referring to the slight haze, and small white pieces that seem to persist during recirculation and run off (lauter to Kettle). My sight glass shows this problem despite my many different approaches, i.e. changing pump speeds, temperatures, etc. Yes, BTE is the manufacturer of both the mash kettle/wort kettle, and the lauter.Last edited by Brewce9; 06-27-2007, 05:59 PM.
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I'm a new brewer, so don't take my advice too seriously unless someone else confirms that there is value in what I'm telling you.
You might want to install a grant to reduce the suction on the mashtun. That will aid in wort clarity.
Second, make sure the water to grain ratio isn't too high (above 1.5 ltr. / lb. of grain). If it's too loose, the filtration of your mash bed won't work as well.
That's all I can come up with. Good luck.
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Call me stupid
Originally posted by Brewce9I am referring to the slight haze, and small white pieces that seem to persist during recirculation and run off (lauter to Kettle). My sight glass shows this problem despite my many different approaches, i.e. changing pump speeds, temperatures, etc. Yes, BTE is the manufacturer of both the mash kettle/wort kettle, and the lauter.Cheers & I'm out!
David R. Pierce
NABC & Bank Street Brewhouse
POB 343
New Albany, IN 47151
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We had a discussion about this some time ago. It may or may not pertain to your issue specifically, but it may be worth reading. I don't remember where it is, but type "mash temp and run off problems" in the search query, and you can read it at your leisure.
Cheerio!
Jay
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Assuming that you have performed a standard mash, with adequate starch comversion, then a twenty minute recirculation should clear up the wort enough to begin running off. I try to vourlauf at a rate a little faster than the initial runoff, to make sure that we have cleared all the fines out from under the mash tun screens. Some small particles will always come through, that's normal.
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It sounds like you have too many fine particles coming through. Have you checked them for starch ? Possibilities include the mill settings being too fine, or you are dropping the mash onto plates without first covering with sparge quality water - a couple of centimetres shuold do. If the holes / slots in the plates are too coarse, then this will allow grist to come through. You shouldn't need to recirc for more than a few minutes - 5, absolute max 10 should be enough. Set the recirc rate at the same rate you start to run off to kettle. Much faster and you will tend to pull the bed on the plates and compact the bed. Are you raking whilst running off ? If raking then you may have the rakes too deep, or too fast, or possibly both. You probably don't need to rake at all once you have spread the bed evenly.dick
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Originally posted by beertje46But who is BTE?
Better Than Ezra, a Lousiana rock band that's been about for 15ish years, their diehard fans are known affectionately as "Ezralites".
Anyone else got anything better?Cheers,
Mike Roy
Brewmaster
Franklins Restaurant, Brewery & General Store
5123 Baltimore Ave
Hyattsville,MD 20781
301-927-2740
Franklinsbrewery.com
@franklinsbrwry
facebook.com/franklinsbrewery
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our technique
bump up mash temp to 76 C before dropping to lauter, have rakes all the way down revolving at 1.5 rpm, rise rakes and slow down to 0.3 rpm as lauter fills before vorlaufing for 10 min. Vorlauf and run-off is maintained at 20 gallons per minute. Rarely encounter problems with this method
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