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Author Topic: Help with my first load drying  (Read 1499 times)

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Offline offrink

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Re: Help with my first load drying
« Reply #20 on: February 24, 2019, 11:08:22 PM »
Well I believe I found my issue with the kiln. I had top of the line door put in. But that doesn’t help when the installers leave a ½ to ¾“ gap around the door and hide it with a trim piece. I was gauging 175-220 ft/min around the door. Insulated and sealed the best I could and the wet bulb was no longer drying out and the wet bulb temp was increasing. Was upto 80° and climbing last time I checked. I have to figure out a good way to seal the bottom of the access door because I can feel air blowing in quite a bit. This winter winds help! Any recommendations for sealing the bottom of a door?

Also one of the four mc probes is giving an erroneous readings. In fact it hasnt changed at all. I changed the position but there was minimal change. (1%) I know I can take that reading out of the average but why would it give such a poor reading and how can I keep it from happening in the future?

Offline doc henderson

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Re: Help with my first load drying
« Reply #21 on: February 24, 2019, 11:23:44 PM »
there are many commercially available sweeps to put on the door.  You could even get a tube of rice and lay at the bottom.  I do not have experience trouble shooting your probes, you can check with stan or gene, or others will chime in.  glad you are making progress
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

Offline offrink

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Re: Help with my first load drying
« Reply #22 on: February 24, 2019, 11:28:42 PM »
I’m sure everyone has a learning curve and working the kinks out of a first load. The wood is looking pretty with mostly minor checking. I tried to find a good picture of honeycombing but I couldn’t. Is it where you have racial cracks and the addition cracks on the growth rings?

Offline doc henderson

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Re: Help with my first load drying
« Reply #23 on: February 24, 2019, 11:38:09 PM »
I think honey comb is more internal.( read more of @GeneWengert-WoodDoc drying hardwood lumber.) vs surface or end checking.
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

Offline GeneWengert-WoodDoc

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Re: Help with my first load drying
« Reply #24 on: February 25, 2019, 12:55:00 AM »
Honeycomb is the crack that begins as a surface check or end check and then worsens.  It runs at 90 degrees to the growth rings (when viewed from the end grain).
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

Offline offrink

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Re: Help with my first load drying
« Reply #25 on: February 26, 2019, 12:21:47 PM »
Thanks for the info!

When you have a MC probe lead (wires) that are giving an erroneous reading how do you fix it? I’ve changed probe locations and it gave the same reading (60%) and when the leads are switched the 60% changes to 43% and the previous 44% lead is now at 60%. Could there be an issue with the wiring from the factory? First load through the kiln and I can’t find any nicks or issues with the lead.

Offline K-Guy

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Re: Help with my first load drying
« Reply #26 on: February 26, 2019, 01:33:08 PM »
Hi offdrink
The probes are resistance based and need a good ground. You need to make sure your control box has a ground rod not a panel ground within 50 ft.

Also the control box has to be set to the appropriate wood group (chart in the manual) to read correctly.
Nyle Kiln Sales & Service

Offline offrink

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Re: Help with my first load drying
« Reply #27 on: March 15, 2019, 08:05:16 AM »
Everything was install per the manual. I have buttoned up all the air leaks I could find and things progressed just fine throughout the drying load except one probe wire that, no matter what place or wood it is installed in, gives highly erroneous readings. The MC was dropping, at its max, about 1.8%/day. Once the MC got below about 15% the rate of drying dropped significantly. It is currently at 10.4% and the MC is only reducing at a rate of 0.4-0.5%/day. I would take it that the slow down is from the difficulty of the wood transporting the final interior moisture out to the edge to be dried. Does that sound correct?

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Re: Help with my first load drying
« Reply #28 on: March 15, 2019, 08:37:58 AM »
hey offrink, remember, if you are learning a ton on your first load, then it is a success.  I do not want to pretend to know all things kiln.  That said, I do think you get to looking at the percent of percent drop, meaning I do think it decreases as the moisture levels drop.  again I will see if gene can chime in and you can do this in the future to by starting with the @ sign and then GeneWengert or any other handle you want to tag.  you then click on the persons handle highlighted in blue.  and it will send a note to Gene that you would like him to look at your question.  did you get a copy of his pdf on the thread "sawing project 2019"  post number 165?  @GeneWengert-WoodDoc.  thanks been there for pointing out similar handles
timberking B 2000, 277c track loader, PJ 32 foot gooseneck, 1976 F700 state dump truck, JD 850 tractor.

Offline GeneWengert-WoodDoc

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Re: Help with my first load drying
« Reply #29 on: March 15, 2019, 08:50:11 PM »
Any probe reading above 30% MC is incorrect.

When you see 60% MC, it is likely that there is water condensed in the wire and this is shorting out.  We see this same problem with the wires on the 26ES remote probe that is cold and brought into a humid warm kiln.  It also happens with some meters that moisture condenses inside the equipment.  It is next to impossible to dry the wires out.
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

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Re: Help with my first load drying
« Reply #30 on: March 25, 2019, 12:26:47 PM »
Any probe reading above 30% MC is incorrect.

When you see 60% MC, it is likely that there is water condensed in the wire and this is shorting out.  We see this same problem with the wires on the 26ES remote probe that is cold and brought into a humid warm kiln.  It also happens with some meters that moisture condenses inside the equipment.  It is next to impossible to dry the wires out.
@GeneWengert-WoodDoc
What is your suggestion to fixing the probe wire issue? First load finished very well and second load is having the same issue. Same probe wire has a reading of 79% and the others have an average of 29.7. Is there a way to put all new wire in with new probes? A place to purchase it or should a contact woodmizer (bought from them) and ask for a replacement/refund to repair?

Offline GeneWengert-WoodDoc

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Re: Help with my first load drying
« Reply #31 on: March 26, 2019, 04:00:17 AM »
I would try for a replacement wire
Gene - Author of articles in Sawmill & Woodlot and books: Drying Hardwood Lumber; VA Tech Solar Kiln; Sawing Edging & Trimming Hardwood Lumber. And more

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Re: Help with my first load drying
« Reply #32 on: March 26, 2019, 08:39:50 AM »
Offdrink.
Call me and let's see if we can troubleshoot this. 800-777-6953 Ext 212
Nyle Kiln Sales & Service


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