Coldbreak Brewing HERMS Giveaway!

HomeBrewSupply AMCYL Brew Kettle Giveaway!


Home Brew Forums > Home Brewing Beer > Electric Brewing > ULWD element dry firing and element lifespan
Reply
 
Thread Tools
Old 08-03-2011, 09:54 PM   #1
Ajgeo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Columbus, Ohio
Posts: 136
Liked 7 Times on 6 Posts
Likes Given: 22

Default ULWD element dry firing and element lifespan

I used Kal's method for installing a Camco ULWD 5500W ripple element in a 20 gallon Boilermaker. It is controlled with a simple single PID/SSR/GFCI setup. I tested everything twice and it worked great. I brewed with it last weekend. As I was pumping the mash water water to the tun, I forget to cut the power to the element. The element fired once the water level dropped below the RTD. I heard a "pop" from the element just before I cut the power and I was worried that I had fried the element. I tested the resistance of the element and it was 11 ohms. I thought it should be around 10.5 using volts^2 ÷ watts = Ω. I figured that was close enough. I added the sparge water and fired it up. It worked just fine for heating the sparge water and throughout the boil. Other than the dry fire incident, the brew day went pretty well and electro-brewing is awesome!

I know that these elements can withstand being dry fired (thankfully) and that is why they are often used, but does it shorten the element lifespan? And for those that use these elements, how often have you had to replace them? Thanks!


Ajgeo is offline
 
Reply With Quote
Old 08-04-2011, 02:21 PM   #2
JKoravos
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2009
Location: Chelmsford, MA
Posts: 1,157
Liked 54 Times on 39 Posts
Likes Given: 21

Default

I'm sure it does shorten the lifespan, but probably not enough for it to matter for us. Our typical duty cycle on these elements is probably less than 1% of what they are designed for. We treat them with kid gloves compared to a typical application.


JKoravos is offline
 
Reply With Quote
Old 08-04-2011, 03:34 PM   #3
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 3 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 22,742
Liked 1296 Times on 851 Posts
Likes Given: 35

Default

I wonder if it would be worth putting an interlock feature that makes it impossible to run the HLT element while Pump 1 was running. If that is too extreme (maybe you need the HLT temp maintained during a slow sparge for example), maybe when both are energized, a very bright indicator light comes on to warn you to be more careful?
__________________
Welcome to BrewHardware.com. I love you.
New 100% Stainless Steel Heating Elements are IN! ULWD 5500w Ripple, 2000w, 1500w, etc
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.
Bobby_M is online now
 
Reply With Quote
Old 08-04-2011, 04:53 PM   #4
Ajgeo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2010
Location: Columbus, Ohio
Posts: 136
Liked 7 Times on 6 Posts
Likes Given: 22

Default

My pump is not currently controlled with my control panel. I suppose a float switch connected to the element relay would be the best way to make sure I don't dry fire again. I run both the element and the pump at the same time when I am pre-heating my tun. Or I could just be more careful.
Ajgeo is offline
 
Reply With Quote
Old 08-04-2011, 07:37 PM   #5
Maxkling
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2010
Location: Atlanta, Georgia
Posts: 554
Liked 30 Times on 17 Posts
Likes Given: 1

Default

Brewmation uses float switches, http://www.brewmation.com/Panels.html

A simple switch like this will work.
__________________
Denny Conn - “The best beer possible with the least effort possible while having the most fun possible!”

Me - "Gun Control Means Using Both Hands."
Maxkling is offline
 
Reply With Quote
Old 08-04-2011, 07:42 PM   #6
onthekeg
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2009
Posts: 1,792
Liked 78 Times on 63 Posts
Likes Given: 15

Default

Wire this in between the SSR and the PID
http://www.grainger.com/Grainger/MAD...554?Pid=search


onthekeg is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
tri-clover removable element - brewershardware element adapter canyonbrewer Electric Brewing 44 04-22-2013 02:24 AM
Element rust no more! bbognerks Electric Brewing 93 09-06-2012 08:30 PM
What does your element look like? dboblitt Electric Brewing 4 01-10-2012 04:08 PM
how big is the installed element? kappclark Electric Brewing 3 03-20-2011 09:21 PM
Element Install in a 1/2 Keg LiverDance Electric Brewing 7 12-05-2010 05:36 PM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS