Iced up walk in freezer
ฝัง
- เผยแพร่เมื่อ 31 ก.ค. 2024
- Service call on walk in freezer not working properly. I take you through my troubleshooting steps to determine the problem.
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00:00 VIDEO START
8:49 BASIC DEFROST CLOCK OPERATION
12:44 TEST DEFROST CLOCK
16:38 DEFROST HEATERS
21:09 LIMIT SWITCHES
Excellent video. I’ve worked with a lot of techs that know what they’re doing but aren’t very good at explaining what they’re doing or why (I would include myself in that description), but you are the opposite, that was an excellent logical video clearly explaining each step and why you took the next step in the progression of servicing the machine. If and when you get tired of being on the tools you could easily take on a teaching role at a technical college. Thanks, looking forward to more of your videos.
+404 Refrigeration thanks for the nice words! I will try to keep the content coming!
Yeah, I couldn't agree more with the comment. Very articulate and easy to understand. Having been a tech on the field as a total greenhorn, I would've loved to have had you as a mentor. Even though I'm not in the field anymore, I'm becoming addicted to these vids you're putting out. Awesome stuff... These techniques apply to everyone using their noggins to troubleshoot.
Thanks!
Absolutely I would love having this guy teach me. I'm a second year and I've been watching his vids while I'm off work because of a work injury, and I'm learning a ton about just the process for troubleshooting AC and various problems in the walk ins. I know most of what he's saying but these videos are still nice to keep on my toes.
Thanks for watching I am going live on TH-cam tonight 2/11/19 at 5:00 PM (pacific time)to talk about my previous videos and answer questions, if you can come over and check it out
th-cam.com/video/9ZvGO4xQCP0/w-d-xo.html
I'm a kitchen manager and wanted to learn about HVAC so I could validate the work my repair guys were doing- plus I felt bad when they had to ELI5 simple things to me. Your videos have taught me sooo much. Thank you.
@@upforellie You are a good kitchen manager. Good for you for learning this, I’m an HVAC tech and love managers that at least somewhat understand what’s going on, they always seem to appreciate good honest work
This one got me out of pickle on Friday 6 PM. You’re the man. Awesome video.
Bro, you have no idea how much I have learned from your videos thanks for your HVACR dedication
Watching the videos on the operation of a defrost clock have gave me a better understanding on how it works thanks 👍🏻
Glad I’m not the only one who changes stuff wire for wire. Lol
I believe I watched this video four times and every time i watch it I say you are very good tech. I admire your work. Great video.
Probably would have been a good idea to verify the circuit was deenergized. I never trust a disconnect. Good video, keep them coming.
I agree, basic common sense. One day that lack of diligence will bite him in the ass.
yeah I cringed a bit there (and im an autospark lol) but have done my fair share of 415v 3 phase fitting (in the uk) and nearly been bitten by a disconnect that was wired in backwards so the fuses were always "hot" with the cabinet open!
Even with the disconnect and breakers OK, you can still get a nasty zap. I got hit with backfeed from somewhere while replacing a rusted out disconnect. I jammed a probe into the earth and then tested the wires. Somewhere it was getting 60 volts, enough to get my attention. I shifted to a single hand method to finish that box out.
Theramsey3 that’s correct !!!
It happened to me on a disconnect after switching to “OFF” L1-0Volts L2-0Volts
L3 Surprise Volts !!!!!
@@blackhatter011 hahaha it did to me down 15 feet onto table and broken backs suck
YES! Finally someone agrees with my disdain for flathead screws.
Same
Only Deranged Masochists like Flat Head screws...
The truly wise craftsman likes the Robertson Square Head screw (Philips Star Head screws strip too easily)...
Admittedly, Robertson's will strip too, just not as easily as a Phillips or Torx screws will...
Great video. I’ve been working in HVAC for a few years now but they didn’t teach us anything about freezers and now I’m responsible for multiple on a military base. This video just helped me a lot. Thanks!
I just retired with 45 years service as an electrical tech for Arcelor mittal steel and you are a fine tech ,with a bright future.
This is so fun to watch. I’m finishing up on second year, and these videos are very helpful. Thank you.
Minor point of criticism: Check voltages after pushing the disconnect switch to ensure the power actually disconnected. Breakers and/or disconnect switches can fail and remain closed. You had 208v on a wire you're going to be switching over to a new module. Getting zapped by 200+ volts is unpleasant at best.
Thank you very much. You always give me positive knowledge about this field. I’m new to the HVACR world. I’m working on my Type 3 and NATE certifications.
I'm retired HVACR in 2015. These videos keep me up to date in my trade even thought I"m not deep in it. Thank you sir
as a first year apprentice, i appreciate these videos you post! Keep them coming (i still have plenty more to watch)
Thankyou sir , as 1 year refrigeration apprentice I learned a lot from you .
This video helped me replace one today... thank you. I jumped ship to the commerical side after being in residential. You explain things Thoroughly and with great detail without repeating yourself. SUBED !
Thanks bud!
I definitely like the GoPro more than the cellphone vids! keep that up! it's nice to see work being done instead of "imma do this (cut to next scene) I've replaced it!" kinda style.
cool vid!
Thank you very much for your teaching like always God Bless you for all your teaching
Awesome job getting lots of technical knowledge from u thanks a lot
These videos are gold love your work man keep it up.
Thank you,, this is so amazing training and I hope you consider me as one of your trainee.
I love watching these I miss being on a roof on days like that, but I would like to see you after hitting the disconnect check power with meter or tic tester, I broke my back from a high voltage bad disconnect and contactor with melted tab.
Just for those new guys, I like you am ocd on these things I bet you have crazy anxiety some nights to where you go back to the job on the weekend off the clock just to check on things
How did you break your back? if you don’t mind answering that question
You’re an excellent tech. Thanks for your thorough explanation. Keep the videos coming.
Thanks for the nice words, I try my best to share the little bit of experience and knowledge I have!
Nice job sir thanks for sharing your talent
the moment you checked the first heater at 5A I knew the other one is good since you had 10A at the rooftop contactor but more power to you for checking the other heater anyway
You are extremely methodical and a great explainer Chris.
Subscribed for life.
Thank you sir!!
Excellent work!! Excellent video!!
Great video! I am a diesel mechanic and I am interested in refrigeration. There is no training for the aftermarket for mobile refrigeration that I am aware of. Your videos help alot. Keep up the great work!
i seriously wish u wer my instructor at the technical college i just graduated from. again keep doin what u do!! thanks again from shine
Thanks for all the great videos.
Hey Chris, I was watching this older video, and saw you struggling a bit with the screws holding the timer assy. in. Please get yourself a set of screw holders, they make one for slotted and for phillip's heads screws. they work really well, maybe you already have them, keep them in you shirt pocket. As always, a great video
Love your informational videos. You should give us a tour of your truck , I’d assume you’re very organized.
is that an allied refrigeration tech screw driver i see? Love jeff, that’s a good man down there
What I hate about refrigeration, is there is nothing fast about it, and customers will never understand that, I can go a Resi igniter call, diagnosis, install new part, check operation in 1/2 hour, maybe even acquire a maintenance plan, but restaurant peeps always asking every 5 minutes what’s wrong, and how much,
What an informative video. Thanks a lot man!
Hey Sport... Excellent video with this defrost circuit. Thanks for the training... I shared it with my team, 💪🏽
Thanks so much bud, I will be going live on TH-cam this evening 2/24/20 @5:PM (pacific time) to discuss my most recent uploads and answer questions from TH-cam comments, the Live chat, and email’s. Come on over and check it out if you can. th-cam.com/video/qop5jyuMfmc/w-d-xo.html
Honestly great video. You wanna know something crazy. I popped the new time clock because I didn’t check the DTD. Again awesome video.
Thanks for watching, please consider subscribing if you haven't already!
Your a good teach I appreciate that. Thanks man.
Thanks for sharing ideas..good job
Good freaking video you explained a lot in detail. Keep them coming I'm subscribing
Thanks bud!
Ps thanks for talking the time to make, vids very cool
Nice videos, young guys are getting a load of info👍
Thanks bud I'm trying to share the little bit of knowledge I have!
Man all I got to say is that isn't excellent explanatory video you did an awesome job at that I've been in the hvacr business 4 25 years and I've been out about 10 I miss it so much great video
Thanks for watching I will be going live on TH-cam this evening 4/1/19 @ 5:PM (west coast) to discuss my most recent uploads announce the Sporlan Bq TEV kit winner and answer questions come on over if you can th-cam.com/video/WLQxwzT65SU/w-d-xo.html
As always very detailed and logically explained freezer defrost timer video.
Can you explained the exact function of aux switch function and on a weekend service call how to wire contactor (if we don’t have any contactor on hand).
Thanks.
Very good work.
Between yourself, Nor-Cal and Jim Pettinato( who has sadly disappeared on the tube ) I have gained quite a bit.
Thank you!(New subscriber)
Teggie thanks for watching, and thanks for subscribing!
I just hit sub. I watch all those guys too, and HVAC life with Alex is good. I'm 1st year Apprentice in Union. I'm glad I stumbled across this guy , he is really good. Are you union?
@@moosehvac3457 Hey Moose, he's better than the union. He's an OWNER. His business. We should be so lucky.
Superb video. I got a lot from this
Thanks, I have another one explaining walk in freezer defrost coming soon.
Thank you for sharing.
12:27 is a good understanding of the circuit involving the tc
Great video!!
Amazing video thank you
@7:40 - LOL!!! RIGHT?!!? It's a throwback to the '40s! Thank God it's not all flat head screws like that anymore. Really makes you appreciate the old timers (Ha! Just caught that on the re-read. No pun intended!!)............ Great video Chris, VERY well explained, AS ALWAYS. Well done.
Good video Teacher
Oh yeah you got down to bussiness Great video
They make a cool flathead screw holding screwdiver ....we use them a lot in the Navy instead of phillips because we need the screw to be steady to insert them. ships move. Klein sells them and I always carried one. You just can't torque the screw tight with the holder/driver. There are also pencil type holders to just start the screw...that was in my Navy tool bag.
exellent vid great work ethic and procedure.
Thanks I try my best!
Good video, thanks for sharing.
Thanks for watching!
Great video
Use a piece of cardboard or a small oring behind the screw to hold the screw in place. Keep up the gr8 work.
very nice video,i mark the timer to see if it is running before turning it.a lot of the time thats the problem,i know not in this case.
I too, share your hatred for flathead screws. They are an incredible pain sometimes.
thank you so much. great video.
Thanks for watching!
HI, very nice job
Great video sir 👍🏼👍🏼👍🏼👍🏼👍🏼
Nice video. The auxilary unit is just an additional safety. It is there in case the defrost clock is faulty and tries to run both the heater and the compressor.
Learning a lot
Good job 👍🏻 👍🏻👍🏻
New sub here, excellent job. Keep it up!!!
Thanks!
Get a wet/dry vac in there once you know the drains clear. Speed it up a little. Good work
Very good video Five Star congratulation
Thanks again for these vids. Like I said in my last comment a few days back, I do food equipment repair but just started moving into refrigeration. For what ever reason these defrost clocks get my head bogged up lol. But these videos help so much. Thank you again.
Very good video
Thanks bro
The defective timer was making a strong buzzing sound when you first opened up the system!
8:49 BASIC DEFROST CLOCK OPERATION
16:38 DEFROST HEATERS
21:09 LIMIT SWITCHES
12:44 TEST DEFROST CLOCK
Thanks for the time stamps I added them to the video!
I spent years doing that kind of work!
Tnx teacher :)
excellent video!
Thanks so much
You gave me anxiety changing that defrost clock… 😀 Relax and take your time… The screws are easier with a calm mind and hand… Great video though.
Very informative thank you. Couldn't see the picture of the melting of that terminal. Thinking about slotted screws now, have you ever thought about using a slotted screw holder/ driver? I use them for ships' galley repairs.
X terminal is essential, you want the defrost cycle to terminate on temperature, not time on a freezer. You only want time termination on a cooler.
Another good video. Although, I think I might have done a quick swipe with a non-contact detector after throwing the knife switch. You just never know these days! Just don’t want to see anybody get hurt. Stay safe! 👍
Its a good idea to check. I had a bad experience on top of a resturant once. I was changing out a compressor that another tech diagnosed. I saw that the disconnect was off and started my recovery and removal. I had the new compressor bolted in and my vac started. As I began hooking up the electrical I got shocked off the L2 leg. After taking a few minutes to calm my nerves I went back to the unit to investigate. What I found was a large guauge wire hooked up to the line side of the L2 lug and jumpered down to the load side. Apparently the fuse kept blowing and some dingus made this up. So yes, checking the voltage from line to line is a habit now.
@@TanTan-ni4mg I would have used a more potent choice of words. And if I knew the jerk, I'd have visited my local witch doctor to slap some nasty voodoo on him.
@@Nighthawke70 I'm pretty sure it was the owners "Handy Man" checking out the unit after the tech had condemned the compressor.
I should have checked FIRST though.
Great video again, the only thing is that you always want your defrost to terminate on temp, not time. The time is a fail safe, in case the defrost termination fails. I'm sure you know that, but it wasn't clear in your explanation.
Good explanation of a Defrost Timer.
Thanks bud
Hey I am going live on TH-cam this evening 1/21/19 at 5PM pacific time you should come over and check it out. th-cam.com/video/dUMYKIdTCR4/w-d-xo.html
nice video
another great video, well explained, extra steps to check everything. you can be a teacher!
I wish there were such videos available years ago when I started this trade.
what model camera do you use for your videos?
I film with my phone a galaxy s10+
Flat head screws should be a illegal
Harvesting parts Nor Cal Dave would be proud. lol
Good vid
thank you for watching, please subscribe if you havent already
That contactor buzzen, its got to go. Sure enough a month from now if those points are bad enough the contactor can 1ph your comp and start that temp gm.
man I am with you with the f.... flat-head screwdriver
I know right!!
Hello sir I would like to know what settings do you set your in and out pressure switches on for the freezers that you work on?
nice video but on a 220 volt 8145-20 clock the N terminal is not referred to as Neutral....its L2...its only neutral on a 120 volt clock which is an 8145-00. terminal 1 & 2 are L1 and N is L2 on 220 volt clocks.
Great point ! I'll definetly correct that in my next video!
I was about to post the exact same thing... that N must be from many moons ago when they were 110 volt only, they should have change the designations long ago to L2 and L1, thats on Paragon...
Amen!!
In other parts of the world that dont use 120/240 they have only line and neutral and they have 240 volts, so depending on country of origin or may very well be a neutral connection.
An electrician friend refers to N as common
Why do a lot of the units still use "open" relays/contactors (as in bare contacts) ?
When you change the defrost timer you do one wire at a time?
Right on man
thanks for watching and please subscribe if you havent already
good video, only you should have ZOOMED in on the points contactor to show how is was no Longer aligned and making 1/2 contact till failure. the melted plastic caused this
the heater circuit should be wired to a contactor if it draws much load as it would not melt the #3 terminal on the clock. as the #3 terminal on the clock should be wired to the contactor coil then the heaters get wired to the contactor. its a standard Paragon 8145-20 the clocks with the 20 and yellow wires to the timer motor is a 208-240 volt. The ones with the 00 and the black wires are 120 volt. i experimented with one the 8145-20 with the invensys motor will run on 120 volt. but for supermarket walk in freezers and low temp reach in cases on some older rack systems the defrost heaters are wired to a contactor. i would recommend a contactor if you see the #3 terminal melted.
Thanks for watching and taking the time to comment. If you look closely the unit does have a defrost contactor, and it was wired in correctly. In this case the reason why the terminal melted was likely caused by a loose screw at the timeclock itself. I actually replaced the defrost contactor and compressor contactor because they were worn out and had signs of carbon buildup at the points. I also found that the defrost termination switch was bad too. It was totally a multiple offender.
its common on another video i watched when screws aren't tightened it can destroy the plastic board on the clock. but the timer motor is still good i would harvest it and save it if on a call if the clock has a bad timer motor then could save the cost on a new clock just to replace the timer motor. I seen some of these clocks can vibrate loose the minutes knob can come off as you need a fine wrench to tighten it on units these semi-hermetic compressors do vibrate alot. that can shake the clock parts loose. As these Paragon 8145-20, 8141-20 and 8045-20 they are all reliable time clocks as i seen some contractors they replace these Grasslin time clocks depending on the system on what model Paragon time clock can replace it. as the mechanical clocks cost less and last longer than the Grasslin. Myself i don't like the Grasslin if me i would stay with the Mechanical Paragon they been around along time some units will have the original enclosures that will say AMF Paragon as i think American Machine and Foundry has once owned Paragon along with Harley-davidson Motor company then. as today they are owned by Robertshaw or Invensys. with Ranco controls. the Supco ones i seen basically are Paragon knockoffs made in China i would use genuine Paragon. depending on your supply house.
Te Rerenga Wetere
Clown.