It heats to temp, but when it reaches the temp, it kicks out and cools down. Any ideas?
I'm personally not a good "armchair" troubleshooter. Your question doesn't provide enough details and is like saying "My car won't run. Any ideas?".
What do you mean by "kicks out"? Does it keep running, but simply quit heating or does the unit stop running altogether? In any case, there can be any number of things causing the problem.
First and foremost, I'd check for proper cooling airflow inside of the control box. If the cooling fan is covered with a layer of fuzz and restricting airflow, then that's a problem. Clean it. With that corrected, operate the oven with the control box cover - observe it, monitor the temp. See what happens when and what's NOT happening when it should.
There are several variations to that oven's electrical configuration, based upon serial number series. Here's the service manual:
AHH! I failed to check your profile. Your company is a "sports bar", so you're not a technician and you need help with YOUR oven, I take it?
If you're a fairly competent DIYer and pretty handy with tools, then at least clean up the control compartment cooling components and make sure that works. Then check oven operation.
If the oven is still acting up, then electrical troubleshooting skills and some knowledge of the oven's electrical theory of operation will be necessary in order to proceed.
If the oven continues to run and it just stops heating, If there are no limits tripped then you need to check the air switch. The switch must be made in order for the unit to heat. If the air tube becomes blocked for some reason it can cause this to happen. Could also be a faulty air switch.
There has been good info posted already but just wanted to add:
On an oven that is intermittent I'll make sure the cooling fans are running and clean and check the air switch tubing like mentioned above. If all that checks out I'll by-pass the air switch and go on down the road. More times than not a week or so will go by and oven works great. In that case, of course, I'll return and replace the air switch. Sometimes though I won't make it 10 miles and the ovens already acting up. Then you'll have to continue troubleshooting.
Btw, I don't know what the OP is capable of doing on his/her own.
>If all that checks out I'll by-pass the air switch and go on down the road
Yikes! That'll get you fired where I work.
Agreed. That's a major taboo within our professional trade. N-E-V-E-R leave safeties bypassed.
I'll agree that's probably not the best "standard practice" and that you won't do something if you're not comfortable with it. I would ask you or your boss(since he's the one that would fire you) to educate yourself rather than just going by what you hear. I've fired these ovens with the blower motor unhooked before. They don't make it long before the hi-limit that is less than 6" from the element trips. Like I said, as long as the oven is clean I have no issue leaving it by passed temporarily but come back and replace it/wire it back into circuit.
>I would ask you or your boss(since he's the one that would fire you)
>to educate yourself rather than just going by what you hear.
Wow. Just wow. And here I've been in this business for around 25 years, a CFESA master tech for over 10 years, still learning new things daily, it seems. And you suggest jumping a safety device and driving away to see what happens. Sorry, no sir. No further education needed.
Then again, I do have a well practicised reputation in our branch for being an overly safety nut. So, perhaps you are truly correct with "that you won't do something if you're not comfortable with it" - that's me in a case like this for sure.
To each his own, I guess.
After re-reading my comments you quoted I feel like I came off as a "no it all". I kinda responded in a hurry. I apologize. You've definitely got some experience on me and I have a certain respect for anyone thats lasted any great length of time in this trade.
That being said, I dont want to put out any bad troubleshooting info. I want to ask you: What would be the proper troubleshooting procedure if you're suspecting an intermittent air switch problem? Why is what I'm doing wrong/unsafe? I'm still learning daily as well.
Best regards to you, Sir.
>What would be the proper troubleshooting procedure if you're
>suspecting an intermittent air switch problem?
Replace it. It's not that expensive. Then you know. And you can sleep well that night.
Look, I'd never advise someone to be the proverbial parts changer, but in my view, you need to do *something*. Looking things over for an hour is fine, but then you need to *do* something. A part you might suspect to be intermittant, change it out. Using your testing skills, available documentation, maybe calling the factory, use your best judgement, but never bypass, jump out, or disable a safety device, and leave it that way when you are not present. Period. These days, when something goes wrong, the last person or company that had their hands on a piece of equipment *will* be blamed, succesfully, if there's a fire, err, as Garland says, a "thermal event". If they find out you bypassed a safety or temperature control, you, your company, and your customer are screwed. Do *not* let it be you.
In a recent life, I played Service Manager. Nothing drove me nuts more than sending a tech out to a job 80 miles away. Tech scratches head for 2 or 3 hours, unit is running fine. Next day, surprise, unit is down again. Send him out again, basicly with the above directive. I *know* you're not sure of what part it might be, but you have to *do* something to try to repair the customer's equipment, and do it safely. Especially if the part is relatively low in cost. If I had to, I could work the cost into the job some other way to cover having to eat the cost. If he thought it might be, say, a $1700 Rational computer, I might run out there with him before giving the ok.
These days it's all about safety, exposure to potential lawsuits, and covering one's posterior.
Hey ryanreid1, after you left that switch bypassed and went on down the road, the real question is "does that unit operate as it was designed and manufactured to do when it left from the factory?"
As a technician, bypassing ANYTHING - even the main power switch - for the sake of circumventing a failure within the equipment - is NEVER a good thing - even if it's merely to keep them up and running until you run across town to get the replacement part. In doing so, you've physically and knowingly altered the equipment's designed function by introducing components or conditions into it which were not part of the original design. In doing so, what did you REALLY do?
You've assumed the liability of any future equipment failure. At the very least, that innocent "bypass" of their issue may not lead to any further issues - At the most, it might...in a BIG way. If there's any chance that the equipment was the suspected cause of a fire and it had burned down the restaurant - or worse YET - caused a LOSS OF LIFE...and if there was ANY chance that it can be traced back to you in the investigation, you're RUINED and could potentially incur the blame and be prosecuted.
I fully understand that, as a technician, you're driven by your desire to solve problems and to be the hero, but we are NOT required to sacrifice our future by making decisions that don't correlate with the manufacturer's design. In your innate desire to do GOOD for your customer, your modifications to equipment (which is what you're doing when bypassing something) may ultimately do HARM.
We live in a litigious society. I'm no lawyer and can't speak their language. But there are laws out there that can come get you or I which we've never confronted nor heard of as technicians. Your employer should know these things and guide you, but unfortunately, most service managers aren't entirely informed of this stuff themselves. Neither are restaurant managers - until they've sought legal counseling and discovered otherwise.
What it comes down to is YOU making the best decisions which don't place liability upon you or your company.
Manufacturers must design and build their equipment within the trade standards established by organizations such as ANSI, NFPA, AGA, NEC, NSF, ASTM, ICC, CA - and their whole LOT of mind-boggling standards that you and I could NEVER know. If we, as technicians, alter their equipment away from those standards, WE are culpable. As they say, "ignorance of the law is no excuse".
...and believe, there are lawyers that specialize specifically in pursuing such cases.
Well, as I was writing what I did, badbozo2315 posted his own. Although always good with words and with a talent for a more animated read...and from a time span of over the course of several years that Badbozo and I have collaborated and shared knowledge, that was probably his best and most lengthy response I've read (I'm usually the loquacious one). That says allot about you, Ryan.
ryanreid1, I respect and appreciate your open and receptive responses. I've certainly seen quite the opposite...from many other forum members at another site who often responded as if insulted by perceived criticism. That's not the intent here and I appreciate that you understand that.
We've all bypassed stuff, got 'em going and never looked back. As a whole, no harm done and everyone was happy. However, after some years doing things like that, I got re-trained by a new service manager with over thirty-five years in the business. He really opened my eyes to the implications of such practices. "Not bypassing safeties" was already a given - a policy pounded into our heads by our company. However, this man stepped in as our new manager and really changed our outlook on things. I did further study on such matters as I alluded to earlier, and with some inquiry of certain folks whose expertise was on those legal ramifications - and it really opened my eyes in realizing the things that I (and other techs) did in our daily jobs that could put us into some deep <expletive> if something went awry.
So, take that for what it's worth...which could mean EVERYTHING.
Hey guys, thanks for the replys. I totally agree with everything you're saying. Just to clarify I'm not out all day by-passing Safety devices. In fact at the moment the air switch is the only one I'm comfortable with bypassing in certain instances. That being said, Easy solution: I'm now stocking one on my truck!!
I just always felt that the air switch was primarily used to kill the elements when the fingers got plugged. So as long as everything was clean I really had no worries leaving it.
Related story: I was explaining this thread to one of my mentors (who lives about 700 miles from me) and he said that about half of thesea ovens he comes across has the air switch by-passed; and about 1/2 of those are actually bad.
Seriously though guys, thank you for the professional responses. I've learned a lot from you guys over the years.
1 decent thing @ this trade is there's usually a lot of duplication in any single kitchen.
Those 1300's (in my exp) r usually at least stacked & many times will have multiple stacks offering the opportunity of swapping parts from 1 oven 2 the next in an effort 2 at least isolate which branch of which circuit is giving u a hard time if not indicating the exact part which is intermittently acting up based on whether the problem 'travels' or not.
Often times just swapping parts around will either indicate which component is compromised immediately as it may b so close 2 broke that it crumbles apart in u hands - or the swapping action 'fixes' the unit because u inadvertently cleaned/tightened a poor electrical connection or knocked some dust/grease out of a critical area.....
This way 'something' is can b accomplished without adequate truck stock, the customer gets 2 avoid buying excess parts by accident, u get the chance 2 PM the entire ignition system at the very least of not only the unit that is breaking but another 2 boot hopefully delaying future service calls. It makes it look like u care deeply & wanna do everything u can 2 help that customer out & allows u 2 look at both units at once increasing the chance of parts sales by uncovering worn parts that haven't made themselves yet known 2 the customer.
One time 1 of those ovens had a couple of us flummoxed because we were only there when the unit was cool & didn't wanna wait @ long enuf 2 c that the air cooling vents on the convection motor were plugged causing the motor 2 eventually overheat, shut down, open the air switch....
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