CraftWEB Hot Glass Talk  

Go Back   CraftWEB Hot Glass Talk > Hot Glass > General Hot Glass Discussion

Reply
 
Thread Tools Display Modes
  #1  
Old 05-04-2018, 01:58 PM
Cecil McKenzie Cecil McKenzie is offline
Registered User
 
Join Date: Feb 2011
Location: Emporia, KS
Posts: 479
Cecil McKenzie is on a distinguished road
ISO Watlow controller.

My Watlow controller buttons are wearing out. In search of a Watlow 981C-20FD-AARG. An older model that they no longer make. Thanks in advance.
Reply With Quote
  #2  
Old 05-07-2018, 08:15 PM
Cecil McKenzie Cecil McKenzie is offline
Registered User
 
Join Date: Feb 2011
Location: Emporia, KS
Posts: 479
Cecil McKenzie is on a distinguished road
The switch that makes the set point go up in my Watlow controller is on its last legs. One heating tech said I could probably change out that micro switch and be good to go. Has anyone worked on controllers in this manner?
Reply With Quote
  #3  
Old 05-09-2018, 05:38 PM
Greg Vriethoff's Avatar
Greg Vriethoff Greg Vriethoff is online now
PotatoFish
 
Join Date: Jan 2007
Location: Charlotte, NC
Posts: 1,974
Greg Vriethoff is on a distinguished road
Have you tried contacting Watlow, Cecile? Their tech support is excellent.

Be sure to do your homework, though. I spoke to one of the engineers on the phone once, and everything he said went right over my head.
__________________
"It's such a fine line between stupid and clever." - David St. Hubbins
Reply With Quote
  #4  
Old 05-09-2018, 08:14 PM
Cecil McKenzie Cecil McKenzie is offline
Registered User
 
Join Date: Feb 2011
Location: Emporia, KS
Posts: 479
Cecil McKenzie is on a distinguished road
i did call Watlow late on a Friday afternoon when my up button stuck on 2350 and the down button had no effect.They said the switch was shot and I needed a new controller. The style I had was obsolete and the new one would not fit in the same space. I did manage to jiggle the switch and get back to 2250. since then during a thunderstorm my controller dialed in 2350 on its own. Fortunately I noticed something was amiss at 2238 and returned to 2050. It seems to work fine except for the switch.
Reply With Quote
  #5  
Old 05-10-2018, 05:11 AM
John Riepma John Riepma is offline
Registered User
 
Join Date: Apr 2003
Location: Grand Haven, MI
Posts: 478
John Riepma is on a distinguished road
I have been told that the 981's are starting to die at a fairly consistent rate. Mine stopped the "hold" program after batching before the ramp down to the squeeze temp a while back and I just happened to notice it one day before I walked out the door after charging. There is an EZ-Zone that fits in the same panel cutout, I believe that it's the 1/4 DIN size.
Reply With Quote
  #6  
Old 05-10-2018, 05:42 PM
Eben Horton Eben Horton is offline
Registered User
 
Join Date: Apr 2002
Location: Wakefield, RI
Posts: 4,327
Eben Horton is on a distinguished road
consider a digitry with a 4-20 milliamp output. I run my furnace on one and its so easy to program.
__________________
<eben epoiese>
Reply With Quote
  #7  
Old 05-11-2018, 07:56 AM
Eric Trulson Eric Trulson is offline
Young Turk
 
Join Date: Sep 2014
Location: NH
Posts: 82
Eric Trulson is on a distinguished road
Like John said, the Watlow 981 has known reliability issues. The ones that are still out in the field are pretty much just being left to die at this point. I'd bite the bullet and just get a new controller of the same panel-mount size to swap in. $100-200 is still cheaper than a furnace crash.
Reply With Quote
  #8  
Old 05-11-2018, 04:12 PM
Ted Trower's Avatar
Ted Trower Ted Trower is offline
Registered User
 
Join Date: Apr 2002
Location: Ann Arbor, Michigan
Posts: 518
Ted Trower is on a distinguished road
I have three 988 controllers still in box. Any chance that they would work?, 988-12BB-AARG, and 988-15KA-JARR
__________________
"It appears to me that glass men are the most given to drunkeness of any class of men I know" Peter Burt, recruiter in Europe, in a letter to Deming Jarves of the Boston and Sandwich glass company. -1826

Last edited by Ted Trower; 05-12-2018 at 09:37 AM.
Reply With Quote
  #9  
Old 05-12-2018, 12:34 PM
Cecil McKenzie Cecil McKenzie is offline
Registered User
 
Join Date: Feb 2011
Location: Emporia, KS
Posts: 479
Cecil McKenzie is on a distinguished road
Thanks for the responses . On Watlows recommendation I ordered one through Wet Dog because they had built the equipment originally. I had purchased it used and was unsure of all its necessary parameters. It is supposed to arrive Monday and they have support videos to help old school types to install it.

After reading the manual of my old controller I think I might have been able to continue with it if I programed it for ramp up and ramp down.( I had been doing everything manually and probably wearing out the button in the process.) I noticed the up and down buttons don't function while it is in a program. The problem I was having was the up button was sticking or working on its own on occasion.

At any rate am installing a new controller soon.
Reply With Quote
  #10  
Old 05-14-2018, 11:06 AM
Cecil McKenzie Cecil McKenzie is offline
Registered User
 
Join Date: Feb 2011
Location: Emporia, KS
Posts: 479
Cecil McKenzie is on a distinguished road
This morning the set point was at 2350 but the furnace was at 2050. I punched the set point to 2040 and the furnace temp rose for a little then went back down. Set it to 2050 and it responded and settled in at 2050. Hope to empty crucible then change out the controller. Not sure what is going on.
Reply With Quote
  #11  
Old 05-14-2018, 08:41 PM
Eben Horton Eben Horton is offline
Registered User
 
Join Date: Apr 2002
Location: Wakefield, RI
Posts: 4,327
Eben Horton is on a distinguished road
Be really careful. You could come in one morning and find it sitting at 2600
__________________
<eben epoiese>
Reply With Quote
  #12  
Old 05-15-2018, 12:00 AM
George Vidas George Vidas is offline
Registered User
 
Join Date: Jun 2012
Location: Detroit, MI
Posts: 188
George Vidas is on a distinguished road
Here's a short article explaining the different standard sizes that panel mount controllers come in: https://blog.lesman.com/2012/08/09/w...anel-cut-outs/

Important to note that the cutouts are standard, but the actual size of the controller on the outside is not. So when shopping for an alternative replacement, measure the size of the opening (on the inside of the panel), not the size of the controller on the outside.

Seems like there should be a lot of options, since there's only a few variables to pay attention to -- panel cutout size, coil voltage on the relays, and maybe the input voltage to the controller. But I'm over here in an armchair with no skin in the game.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 06:31 AM.


All published comments within these message boards are the opinions of its contributor and does not represent
the opinion(s) of the owner(s) of this website. Please see the Terms of Use file for more details.

Books to Help Artists Avoid Online Scams: Top 10 Email Scams | Social Media Scams

Powered by vBulletin® Version 3.7.2
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
CraftWEB.com. Opportunity Network. 2008. All Rights Reserved.