Anne Hunt on tue 15 aug 00
Hi, there! I'm an apteryx, a wingless bird with hairy feath..oops! Sorry,
wrong group.
What I really am is the proud mama of a big, honkin', 24cf Crucible gas
kiln. Used to use a little POS 2-burner gas kiln, so I was familiar with
putting a lot of "English" on my bisque firings (it could only get to ^1, on
a good day).
Imagine my horror when, in the middle of the first bisque firing---and I
was nervous anyway--flames start cavorting around this round thinger at the
bottom of all the left-side plumbing! Well, in addition to being
every-so-often nervous/scared, I'm frequently bull-headed. So, rather than
sensibley shutting the kiln down (I had a sale in a week), I fumbled with
fibrefax and nichrome wire, hoping to temporarily stifle the
"leak".
The long and short of it is that it's not a leak: the kiln may/may not have
been rigged for natural gas when it lived in Alaska, and the "local" pottery
outfit here may/may not have converted the two pilot valve orifices (orifi?)
to propane when it did the four big boys. Can't get much info out of the
pottery outfit, and previous owner has made her transition.
The nice propane man's take is that the pilot venturi orifice may be too
large, ergo, insufficient pressure to keep all the gas going up the long
pilot bar
-there's an electronic ignition on this thing.
-pilots and burners light up as advertised.
-the gas is actually backing up out of the pilot assembly oxygen ports --
the four thumbnail-sized holes under the assembly (the round thinger). And
it's coming out of the right pilot assembly, too, just not enough to ignite.
-flame dance occurs whether the pilot bar is turned low or high, whether
main burners low or high.
Gas man thinks it's also possible that the line/bar, etc. could have some
garbage in them, creating backpressure. Found out from the pottery outfit
that the pilot orifice size "should be 50 or smaller".
Do any of you gas gurus out there have any pertinent comments/ suggestions
to make before I run up a phenomenal gas man labor bill?
anne & the cats, in sequim (yes, I've been here the whole time), and have
finally said "the hell with it, and turned all the flowers, bushes, fruit
trees, and veggies over to the deer and raccoons.
Lamar, Luke on tue 15 aug 00
Try contacting Marc Ward at Ward Burner Systems:
Marc Ward
Ward Burner Systems
PO Box 333
Dandridge, TN 37725
USA
423.397.2914 voice
423.397.1253 fax
wardburner@aol.com
-----Original Message-----
From: Anne Hunt [mailto:ahunt@TENFORWARD.COM]
Sent: Tuesday, August 15, 2000 4:44 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Problem with "New" Used Gas Kiln
Hi, there! I'm an apteryx, a wingless bird with hairy feath..oops! Sorry,
wrong group.
What I really am is the proud mama of a big, honkin', 24cf Crucible
gas
kiln. Used to use a little POS 2-burner gas kiln, so I was familiar with
putting a lot of "English" on my bisque firings (it could only get to ^1, on
a good day).
Imagine my horror when, in the middle of the first bisque
firing---and I
was nervous anyway--flames start cavorting around this round thinger at the
bottom of all the left-side plumbing! Well, in addition to being
every-so-often nervous/scared, I'm frequently bull-headed. So, rather than
sensibley shutting the kiln down (I had a sale in a week), I fumbled with
fibrefax and nichrome wire, hoping to temporarily stifle the
"leak".
The long and short of it is that it's not a leak: the kiln may/may
not have
been rigged for natural gas when it lived in Alaska, and the "local" pottery
outfit here may/may not have converted the two pilot valve orifices (orifi?)
to propane when it did the four big boys. Can't get much info out of the
pottery outfit, and previous owner has made her transition.
The nice propane man's take is that the pilot venturi orifice may be
too
large, ergo, insufficient pressure to keep all the gas going up the long
pilot bar
-there's an electronic ignition on this thing.
-pilots and burners light up as advertised.
-the gas is actually backing up out of the pilot assembly oxygen
ports --
the four thumbnail-sized holes under the assembly (the round thinger). And
it's coming out of the right pilot assembly, too, just not enough to ignite.
-flame dance occurs whether the pilot bar is turned low or high,
whether
main burners low or high.
Gas man thinks it's also possible that the line/bar, etc. could have
some
garbage in them, creating backpressure. Found out from the pottery outfit
that the pilot orifice size "should be 50 or smaller".
Do any of you gas gurus out there have any pertinent comments/
suggestions
to make before I run up a phenomenal gas man labor bill?
anne & the cats, in sequim (yes, I've been here the whole time), and have
finally said "the hell with it, and turned all the flowers, bushes, fruit
trees, and veggies over to the deer and raccoons.
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
WardBurner@AOL.COM on tue 15 aug 00
In a message dated 8/15/00 10:38:21 AM, LLamar@BACWEB.ORG writes:
<< Try contacting Marc Ward at Ward Burner Systems:
Marc Ward
Ward Burner Systems
PO Box 333
Dandridge, TN 37725
USA
423.397.2914 voice
423.397.1253 fax
wardburner@aol.com
>>
Thanks for the referral and we will need to talk with Anne about her
problem...email doesn't cut it for technical discussions where I have to ask
a lot of questions. Also, my numbers have changed (see below).
Marc Ward
Ward Burner Systems
PO Box 1086
Dandridge, TN 37725
865.397-2914 Voice
865.397-1253 Fax
wardburner@aol.com Email
wardburner.com Online Catalog
| |
|
