boiling wort - won't recirc in pump! - Home Brew Forums
Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > boiling wort - won't recirc in pump!

Reply
 
Thread Tools
Old 03-01-2011, 03:41 PM   #1
slakwhere
Recipes 
 
Dec 2009
Salt Lake City, Utah
Posts: 764
Liked 21 Times on 20 Posts



so i've been reading about recirculating boiling wort in your hoses/pump for the last 15 minutes to sanitize them... i've given it a couple tries but i never seem to get very good flow. i even have a rough time getting the hose primed before connecting it to the pump.


My Setup:
-Keggle with side dip tube covered with SS scrubbie
-hop spider to hold the hops
-1/2" ball valves with camlocks
-march 809 pump

when i finally finish the brew i find a decent amount of crud in the SS scrubbie. is this hot break?

anyone have any recommendations on how to get the pump rolling during boil?



 
Reply With Quote
Old 03-01-2011, 03:53 PM   #2
BendBrewer
Recipes 
 
Jan 2010
Bend, Oregon
Posts: 3,134
Liked 77 Times on 59 Posts


Turn the flame down a bit to just under a boil. 208 degree water kills stuff too and 15 minutes is overkill.......literally.



 
Reply With Quote
Old 03-01-2011, 03:56 PM   #3
samc
Recipes 
 
Aug 2008
Portland OR
Posts: 5,387
Liked 62 Times on 58 Posts


Quote:
Originally Posted by slakwhere View Post
i even have a rough time getting the hose primed before connecting it to the pump.
Solve this first! How are your pumps oriented? How are those hoses attached? Clamp type - hose type, etc.?

I have no trouble running boiling wort through my pumps.

 
Reply With Quote
Old 03-01-2011, 04:31 PM   #4
slakwhere
Recipes 
 
Dec 2009
Salt Lake City, Utah
Posts: 764
Liked 21 Times on 20 Posts


Quote:
Originally Posted by samc View Post
Solve this first! How are your pumps oriented? How are those hoses attached? Clamp type - hose type, etc.?

I have no trouble running boiling wort through my pumps.
this only happens at boiling. the rest of the time everything is perfect!

dip tube > 1/2" ball valve > 1/2" camlock > 1/2" camlock barb for hoses > hose > camlock barb

there's something about the fact that the liquid is actually BOILING that causes the issue. is it that it's boiling in the dip tube and causing bubbles?

 
Reply With Quote
Old 03-01-2011, 04:45 PM   #5
BendBrewer
Recipes 
 
Jan 2010
Bend, Oregon
Posts: 3,134
Liked 77 Times on 59 Posts


yes, air is getting into your dip tube causing cavitation in the pump.

 
Reply With Quote
Old 03-01-2011, 04:48 PM   #6
slakwhere
Recipes 
 
Dec 2009
Salt Lake City, Utah
Posts: 764
Liked 21 Times on 20 Posts


Quote:
Originally Posted by BendBrewer View Post
yes, air is getting into your dip tube causing cavitation in the pump.
ah, that'd do it, i'll turn down to just under a boil for the last 5 minutes and recirc

 
Reply With Quote
Old 03-01-2011, 04:57 PM   #7
brewmonk
Recipes 
 
Apr 2009
Sharon,MA
Posts: 1,093
Liked 14 Times on 14 Posts


i dont think air even needs to be there.

if your water is at boiling temp, and your output has less resistance than your input, your pump will be PULLING on the boil kettle,not PUSHING wort to your fermenter/recirc-loop/chiller/etc.

at that temp, the water will boil under that slight 'vacuum', just like anywhere else: lab, mountaintop, coopers, muntons, etc.

air, entering the stream, does the same thing. so, yes check all your connections for airleaks.

but i agree, lower the heat a little. it will be safer for your pump and hoses too.


__________________
-I'm not getting older, but the floor is getting further away.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Who cleans their March Pump and hose before boil recirc? jamest22 All Grain & Partial Mash Brewing 3 12-31-2010 06:50 PM
Hop free wort boiling BOBTHEukBREWER All Grain & Partial Mash Brewing 6 08-06-2010 10:03 PM
After boiling the Wort ... hector All Grain & Partial Mash Brewing 3 02-25-2010 07:27 PM
Boiling AG wort in two pots mofiddlin All Grain & Partial Mash Brewing 3 01-05-2010 10:37 PM
boiling the wort 400d All Grain & Partial Mash Brewing 1 09-28-2009 11:55 AM


Forum Jump