DISHWASHER EXHAUST NOT WORKING

[@alantorrance6153]

I am a total "outsider" with a reasonable technical knowledge. This is a fascinating channel.

[@x_x_w_]

must have been awhile since the last fire inspection..... blocked access to electrical panel.... greeaaaa.t

[@dangda-ww7de]

NOt all of them will go up the roof for inspection, twice had my roof redone, and the inspector didnt even go up on the roof to check.

[@peterhyams6824]

I’ve never seen adjustable pulleys before. What a great idea. I spent the last 15 years as a commercial catering engineer and that dishwasher looked as though it was ready for a serious service. I used to replace bearings in motors if they were in good condition. I had an urgent call to a large school where the 3ph (415 volt between phases in the uk) dishwasher wash pump tripped. The main wash pump had seized solid. The head teacher threatened to shut the school if the DW wasn’t fixed due to cross infection risk until I pointed out that they could use paper plates! I got the pump out and back to the workshop and had to split the bearing with a grinder because it had welded itself onto the motor shaft. Fitted a new bearing and took it back to site and refitted the pump. I loved being able to provide that sort of service. I’m retired now but have lots of stories, like the restaurant that complained that their D/washer wasn’t taking the liquid detergent only the find the tube in a box of detergent powder!

[@mick2171]

You wrote an essay

[@TheFilthy13]

You said in this video you like to spread your knowledge, then you said the little that you have !!! My brother you have a great wealth of knowledge !!! You experience and knowledge is worth your weight in gold. !! I have watch many of your videos and your problem solving, how your approach each job speaks volumes on your knowledge. You are a great and experience technician.

[@HVACRVIDEOS]

Thanks for the nice words bud

[@TheFilthy13]

@@HVACRVIDEOS Brother worked in Streetcars and Subway cars here in Toronto. The people I worked with over the years did not have the problem solving and drive that you have shown in these videos. Some of these people could not read a blueprint if their life dependent on it. Do not get me wrong I did find some people who did have great problem solving and a desire to repair the cars properly and to the manufacture settings, others did not care. I forgot to mention, this was a union enviroment, so time was not really an issue.

[@inothome]

I didn't see it listed on the nameplate, but if the motor is thermally protected (internally) it could be going on and off if it was running hot or if the thermal switch was bad.

[@ILOVECALGARY2024]

I never knew dishwashers had exhaust fans thank you for the knowledge cool cooling man

[@FrozenHaxor]

Disgusting place, one of the worst you have shown so far. Also disgusting maintenance practices on behalf of that restaurant. Unbelievable.

[@phillippearl7053]

FrozenHaxor it’s unfortunately pretty typical

[@davejohnsonnola2758]

Brother if you think that's the worst...I hate to burst your bubble... in the words of the immortal B.T.O...."You ain't seen nuthin yet"!

[@perrybrown4985]

Ha ha, my electrician Father used to do service work for a smallgoods factory ~50+ years ago and as a kid, I sometimes used to tag along. Everything in that place was dripping in grease, caked on all the motors, dripping off all the conduit and switches. If covers were removed, cockroaches would run out. Whenever my dad came back from that place, his overalls were disgusting and he smelt like salami - but, he would bring back all sorts of nice smallgoods - they made really nice sausages :-)

[@ainzooalgown7589]

@@perrybrown4985 those sausages had extra flavor from the disgusting stuff

[@RodrigoRamirez-fc5hv]

@@ainzooalgown7589 from the protein.

[@matthewrobertson3018]

Hey! I shared your channel with my HVAC/R Class, everyone there loves your content, including our instructor. Keep up the great work!

[@HVACRVIDEOS]

Thanks so much!

[@MrSmithCasey]

i know you hear this but i love your videos, i cant stop binge watching them LOL

[@HVACRVIDEOS]

Thanks bud

[@rookierefrigeration4357]

It’s so funny that HVAC guys work in such a variety of equipment. Vent hood, RTU, refer, etc. I’ve worked on tool up doors, etc...

[@HVACRVIDEOS]

I know right we really have to have a basic understanding of most trades to be able to perform our daily job requirements

[@gregmercil3968]

A good variety keeps it interesting.

[@HVACRNorth]

Agree everything!!!

[@stevenaubin3362]

You have certainly put some detail into that background. Nice Lego creations.

[@shanenelson3778]

First of all let me say I have been watching your channel for about 2 weeks now! I am a certified hvac/r tech went to and graduated a vocational school. Do some video on those low pressure controls in the box. The video you posted about one thing leads to another. You briefly talked about those low pressure controls.

[@shanenelson3778]

I also wanted to say I have learned alot from your videos in my last statement. Thanks

[@Metalcastr]

I like how detail oriented you are, and make the systems work great!

[@walkingfreak]

That whole place is a dumpster fire. OSHA and inspectors should go through it with a fine tooth comb. someone would get slapped with a ton of fines.

[@HVACRVIDEOS]

I will be going live on KZbin this evening 11/25/19 @ 5:PM (pacific time) to discuss my most recent uploads, and answer questions from email’s , KZbin comments, and the Live chat come on over and check it out if you can. kzbin.infolive

[@martinwoods6716]

Awesome Video, very detailed... Customer I work for uses Test & Balancing Company, there’s a lot to learn and do in our field....

[@commercial_service]

Good video. Talking my language. A Hobart made unit for ECOLab. The dish machine should have had pants legs and that would have prevented all that rust in the dish area. The customer didn’t want to pay for the extra cost to have it done. Surprised ECOLAB let that thing work in that way. The motor replacement info was good to know. Lots of clients expect me to work on their exhaust fans for their dish machines. I usually say no but now I might consider taking them on. A really good video.

[@DonWestphal]

I think that was an ECOLAB machine. I dont know of a Hobart with that kind of conveyor.

[@commercial_service]

Don Westphal Ecolab is a chemical company. They don’t even fully make their own pumps. Components include parts from Dema and Knight. Dishwashers used by Ecolab are: Hobart and Jackson. A while back they sold off their repair arm. You know it as Smart Care. All to focus on their core business.... chemicals.

[@DonWestphal]

Hmm never heard of Hobart owning ECOLAB or anything an i work for Hobart lol

[@commercial_service]

Don Westphal Hobart doesn’t own ECOlab. ECOlab buys machines from mfgs and they emboss the units with the Ecolab name. Buy enough from Hobart and they will stamp your name on the machines you buy too. ECOlab is a big customer of Hobart. I guess you were on the meat slicer side of things.

[@DonWestphal]

No i do it all im cross trained on all the equipment. I just dont too much into all the business side of things. I focus on troubleshooting the equipment and that's about it lol. I accepted a job to do HVAC recently and will start it in December so im trying to freshen up on a few things before hand

[@Zachariahfml]

Woah the rolling shutter on that motor sheave was tripping me out

[@HVACRVIDEOS]

I will be going live on KZbin this evening 11/25/19 @ 5:PM (pacific time) to discuss my most recent uploads, and answer questions from email’s , KZbin comments, and the Live chat come on over and check it out if you can. kzbin.infolive

[@ArlenMoulton2]

I love your exhaust fan videos, we don't commonly have that style in the UK and they look so cool!

[@treverkirk8110]

Thanks for posting, interesting video to watch and you do a great job of explaining everything. I do want to point out a couple things though. EVERY motor has to have overload protection(not just three phase motors as you stated, sorry to nit-pick.) Its just a matter of if its thermally protected internally or utilizing external protection(overload relay). Now most motors if protected internally will have it printed on the nameplate. That is not an absolute rule, but generally holds true. If it does not explicitly state that it is protected internally then you have to assume it is not, unless you want to contact the OEM for clarification.

[@HVACRVIDEOS]

Thanks Trever and you made some great points!

[@syaz4380]

Did you ask them why one of the exaust fans don't have power? (the one that didn't have any cables running)

[@Walczyk]

it’s all around a dumpster fire, better off not asking questions

[@StarGuardian8180]

Yup on the curtains your correct. The machines typically don't control the fans above. Dish machine fans every place I've worked Run 24/7 unless its controlled elsewhere if any. Anyways appreciate your videos.

[@DonWestphal]

With the curtains on the dishwasher you're correct there needs to be curtains. The entrance end is usually a little shorter to put racks in. When the curtains start getting super hard and curling they should be replaced.

[@bobparrott8130]

Your motor protection is bilt into the overload switch. (On/off). Which is located right at the unit 3phase switch. 👍

[@treverkirk8110]

I thought that too at first but now I'm not so sure. I've definitely seen manual motor start switches with a melting alloy element, it always been single phase motors, where only one element is needed. I dont think that switch had 3 melting alloy elements?

[@cantsolvesudokus]

1:59 that motor is trying to change dimensions, that spindle is way to trippy :P

[@gregmercil3968]

Holy cluttered health code and safety violations! 😨

[@binhashimhvacrservices284]

It was a good one. Locked up. And try to inform the customer about the oil in the first fan, I can cuase fire.

[@kronosouranos9979]

At the end of the video your eyes are red like crazy, like you just took a big bong hit lol

[@dandfgarage986]

I love how you use good Marathon motors.

[@HfJax]

Thanks for sharing your knowledge with us and thanks for putting the time

[@StarGuardian8180]

Welp since im a avid dishwasher. Also btw thats a Ecolab EC-44(HH) Beast machine they do last long if treated right. But if the machine doesn't have pant leg duct work. As long as the canopy can capture all the exhaust heat/vapor its good. Not sure why they have the opening for the vent like that with solid blockers. I've seen one machine with a setup like that. I hadn't gotten up and close to it so cant say that's typical, although the duct configuration I'm pretty sure inst.

[@acrraideredward9773]

Great video! Always learning from your experiences 👍👍

[@HVACRVIDEOS]

I will be going live on KZbin this evening 11/25/19 @ 5:PM (pacific time) to discuss my most recent uploads, and answer questions from email’s , KZbin comments, and the Live chat come on over and check it out if you can. kzbin.infolive

[@finno123456]

So in the us and Canada you use 240v in industrial situations such a electrically driven motors. Then 110v in house hold sockets. In Ireland we use 110v in industrial such as a building site etc and 240v in homes

[@stevenmoomey2115]

I’d like to know who did the initial inspection? That’s the wrong Fan for a Dishwasher. Has to be an Updraft discharge, also has to have an external disconnect on the roof, so you don’t have to touch the fan to shut it off. Also Aluminum or Stainless Steel ductwork. Exhaust must be tapped into the entrance and exit of the dishwasher. A Dishwasher that size would have to have the controls to turn the fan on and off with a short time delay on the off cycle. Have you tried the Optibelt Brand of Belts. I wouldn’t use anything but their belts on exhaust fans. Six to twelve times the life out of the belt and easier on the motor amp. wise.

[@etherealrose2139]

That's a driven pulley. The motor drives the other shaft as it's the source of power. :) It isn't thermal protection built in to the 3 phase motor but it does make you wonder if something was causing a spike in amps and the breaker protected the motor (as well as the line) from overheating to catastrophic failure. Bad bearings, which that obviously had, would cause a higher current draw but it'd be most noticeable on startup and most likely to open the circuit then. I'd be curious if the driven shaft bearings are going out as well, causing more drag or perhaps the fan blades are messed up somehow (rust? chipping?)

[@pedrojardim1163]

thanks chris --- i do share some of this videos with my freinds -and i hope to help u some how --bcose to watch some of ur videos it just the best to watch ---and helping mi to -----thank u so so much

[@HVACRVIDEOS]

I will be going live on KZbin this evening 11/25/19 @ 5:PM (pacific time) to discuss my most recent uploads, and answer questions from email’s , KZbin comments, and the Live chat come on over and check it out if you can. kzbin.infolive

[@yukongoatslayer7383]

Dude, I like your videos! I feel like you're giving me a free education in HVAC common sense. Lol, I'm just a dumb carpenter!

[@SeanMackBuffaloStyle]

Exhaust manufacturer told me a motor that is 1 hp or smaller, does not need motor starter protection, has internal protection. What's wierd like you said 3 phase for a dish exhaust? They should have used aluminum duct, crazy corrosion. Also the bottom of the hood should be no higher than 80 inches, maybe poor draw because too high?

[@chemech]

I can't say for certain without having the specifications for the dishwasher and the fan, but they don't appear to be matched up right... The fan static pressure is at *best* about 0.4 "wg, with a velocity pressure of ~1/2"wg I started running some pressure drop calculations, and they aren't adding up... nobody's paying me for the analysis, so I give up... it just doesn't look right...

[@BOBKB3NZX]

How curious. I wonder if the if there was am issue with the power coming in that agitated the motor. Maybe contactor stuck? Gotta hate intermittent failures. Keep the wedding band for off days, get a silicon ring. Almost lost my digit after a compressor toppled onto my hand. 😅

[@HVACRVIDEOS]

Yeah it's been a week since the call and no complaints..... the ring actually is a silicone Qalo ring, I havent worn a metal ring for at least 5 years now. Hell if I could do it all over again I wouldn't even waste the money on a metal ring and I would have just bought the silicone ring to start

[@BOBKB3NZX]

@@HVACRVIDEOS May be it just needed some love. Machines are creatures. Yeah I made that mistake and had to cut off an 18k gold ring and it wasn't easy. After being pinched. I went on a binge watch and I have to say, I love how you handle even an intermittent. I'm northern FL central and it's nothing short of a miracle the systems that actually run in my dirty city. 😂 looking forward to next vid.

[@Eddy63]

Chris your vids are always good but I noticed they 're even better with a " STRONG" Bloody Mary ... Lol ... Very much appreciated ...

[@cityscene121]

When you "opened up" the motor pulley and adjusted the pulley by turning it in a ccw direction, I was wondering if your adjustment had to go to the next 'Flat' on the motor stem? It seems logical that the next flat would be the only place you could retighten, so in doing so the distance has to be a predetermined speed thus amp draw or am I way off? And were you being careful not to change the up/down position of the pulley on the motor shaft? Be brief I'll pick up on your answer. Thank you

[@HVACRVIDEOS]

Yeah you got the right idea you have to tighten on the flat spots and yes you have to watch the pulley alignment while adjusting so you dont create another issue by running them un aligned

[@SOU6900]

I'm curious as to what you had blurred out when you first got up on the roof, but at the same time I probably dont want to know by the looks of that place. Also am I missing something or is the motor running backwards at 13:19?

[@HVACRVIDEOS]

I blurred out a box with a restaurant logo on it.... the motor looks like it is running backwards due to the camera shutter speed.... I will be going live on KZbin this evening 2/17/20 @ 5:PM (pacific time) to discuss past videos and answer questions from KZbin comments, Facebook comments, email’s and the Livechat, come on over and check it out. kzbin.info/www/bejne/mYWliZaVg5mCZ9k

[@SOU6900]

@@HVACRVIDEOS Ah ok lol. Too bad I can't really watch the live stream. Gotta be in bed at 7 pm and up at quarter to 4...

[@alvaroturrubiartes76]

Dang that’s a good looking motor!

[@jamestoy426]

Learned a lot thanks for making videos

[@joedjordjevic5657]

Great video as usual. I have a quick question for you in my restaurant one of the hood motors when it rains stops working and after while comes back on he's been doing that over a year only does that when it rains any other day works fine any idea what's wrong with the motor

[@martehoudesheldt5885]

did you grease the pillow block bearings? (if not sealed) and that is a friction belt ( verses an auto style belt) it does not get tightened super tight as it will pull the bearings out of the new motor. did you never seize the shaft and the threads on the adjustable pulley so that you can get it apart in 6 months?

[@corrigenda70]

A very interesting episode because call outs to things that are working when you arrive must be the most difficult. Given the state of the place it makes you wonder how safe the place is. Do you have a duty to report such issues to health, safety and fire authorities??

[@deanchapman6425]

Just love wet floors and working electrical.😮😮😮

[@donnierobertson3088]

Great job again like always always

[@Ted_E_Bear]

Great instructional video !

[@HVACRVIDEOS]

Thanks, I will be going live on KZbin this evening 11/25/19 @ 5:PM (pacific time) to discuss my most recent uploads, and answer questions from email’s , KZbin comments, and the Live chat come on over and check it out if you can. kzbin.infolive

[@carsonjones2877]

I'm very curious if you took a CFM measurement before and after to see the increase in CFM after changing the sheave.

[@babyking5763]

It makes a big difference.

[@APECK636]

I do hvac, but don't have much experience with belt driven things. How does turning that pulley on the spindle slow it down? Does it change the ratio?

[@APECK636]

So what is the answer?

[@briandjordjevic9969]

APECK618 magic 🧐

[@HVACRVIDEOS]

I will be discussing this on my livestream monday night

[@r1cky42]

How do you locate the contactor, controlling that motor if it is in a different room?

[@HVACRVIDEOS]

Kinda like where's waldo........ just make an educated guess, most of the time they are in the electrical room

[@Paul-IE-Repairs]

@@HVACRVIDEOS " electrical room" (aka the janitors closet)

[@renton9999]

time to call the city and have them do an inspection. you really shouldn't have any contactors inside breaker panels, water on the floor near panels is a major red flag, panels MUST have a 3 foot clearance in front of them (per fire and electrical code).

[@fespinoza287]

Good video 👍 What do you think about checking statics at the fan with a manometer before getting into the crawl space?

[@coreyb4073]

We just had a roof vent motor overload and short to ground, ended up tripping the main 1600 amp ground fault and shutting down half the building. Going to have the electrician come back and put overloads on all the motors

[@EastSqure]

How does moving the pulley slow down the motor?

[@criskhiri2452]

thanks for the video

[@Jerry_SWMO]

Curious, what did you blur out at 0:38 ?

[@Jerry_SWMO]

You "hearted" my question but you did not answer it. I enjoy your videos even though I know little about HVAC. I admire your work ethic as well as your video and editing skills. Keep up the good work, my friend.

[@HVACRVIDEOS]

I blurrred the name of the customer

[@matthewgregory8218]

Do you do wall fan forced heaters as well fix the fan motor capacitor heating coil?

[@austinduvall4596]

What was that blurred box during the first bit of the video?

[@HVACRVIDEOS]

Just a box that had the restaurant name on it

[@CursedSouthwest]

Ok

[@sportsman042002]

Why is matching the amp draw important on replacement motors thank you in advance.

[@sK-hi3lb]

Did it solve the excess steam being pushed out of dishwasher

[@harrydickson4575]

Another great video 👍👍👍

[@dtiydr]

0:38 Dead body in the corner?

[@jrsmyth9761]

You commented about the rust build up and presumed it had been happening for some time. Do you have any opinions on that now that you know there is more air moving? Was it always running too slow? Is it incorrectly sized? Just curious you thought on the rust you saw before and after repair.

[@HVACRVIDEOS]

Most dishwasher exhaust systems have stainless steel ducts coming down to the dish machine ( we call the pants) and that makes sure the steam goes right up the hood. In this situation they were using a hood 4-5 feet above the dish machine, if they had the stainless pants than they would not have the rust issues

[@Mrneal1027]

Great job 👏

[@kelly00000111111]

New sub here. Big fan of the channel. No pun intended. Ah ha ha ha.

[@chopperdt66]

Looks like the junkyard for parts for exhaust fans. 😂 If you can even find a decent part of those units. 😂 Was this a condemned 🏫?😂

[@duaneroberson7447]

Good Job 👍

[@edcaddict9538]

When slowing down the fan, did the whole wheel spin?? It looked like the top of the wheel and the bottom of the wheel spun in different directions.

[@AgentOffice]

That's probably the camera shutter

[@J-Colt]

My locker room exhaust did that just 2 weeks ago. I get a call after I get home. Woman says it sounds like a paper shredder going off every 10 15 min's for a couple minuets and stops. I knew that exhaust was over her office on roof. Of course it had been doing it all day but waited till I went home, lol. Next day I went up and took cover off. Turned power off and spun it by hand. Turned power back on and sure enough, ran for 1 min and sounded like paper shredder. Motor would over heat and shut down then turn back on for a min or so. Replaced motor.

[@HVACRVIDEOS]

I will be going live on KZbin this evening 11/25/19 @ 5:PM (pacific time) to discuss my most recent uploads, and answer questions from email’s , KZbin comments, and the Live chat come on over and check it out if you can. kzbin.infolive

[@jannickcst]

That new Motor you've installed is also made for European Voltages, but it says 190/380 instead of 240/415?

[@necessities-1235]

Could I get a brief breakdown for SF on these types of motors same for condenser motors. Please and thank you

[@Eric12886]

Does the R in HVACR stand for refrigeration

[@HVACRVIDEOS]

Yes it does

[@onielonelka7875]

Love your videos would really like to do this work

[@sterlingarcher46]

Pretty amazing it didn't have an overload though, I don't understand why they'd do that , unless It was originally a smoke exhaust that was part of the fire extinguisher systm and they just used it for the dish washer and they didn't bother modifying it , but it wouls seem pretty low horsepower for that doesn't it?

[@jimmuo9286]

Remind me never to eat at that restaurant!

[@Bobherry]

Chris what exactly is makeup air? I know it has something to do with + - air pressure.

[@FrozenHaxor]

It's air that is pulled from outside and forced inside by either a dedicated unit or by AC unit dampers, to "make up" for exhaust fans pulling the air out of the building etc. so that there is not a lower pressure on the inside of the building than outside which can lead to certain problems.

[@jasonmurawski5877]

When the exhaust fans pull air out of the building it reduces the pressure inside the building, so makeup air can be provided by a dedicated unit or the Minimum -outside air dampers on the AC units

[@buixote]

I used to make biodiesel, so I know about pumping grease from behind restaurants... never had to suck it out of an exhaust fan! ;-) Maybe the fan blades have disintegrated!

[@ljlittlej6500]

Gravity dampers inside do get stickie and stuck with grease just below exhaust fan.

[@AFXGaming]

That is an absolutely disgusting kitchen, remind me to never eat there

[@gyrgrls]

Psst! Don't tell them that they can save a nickel by installing return lines from the grease traps to the fat fryers.

[@knockitofff]

9:40 SHEAVE, god dammit!!!!!! LOL

[@RodrigoRamirez-fc5hv]

Did you grease the bearings.

[@texasrigged5875]

bruh i saw dishwasher exauhst and thought someone put a dish washer exaust on a bike hahahah

[@paulchamberlin5354]

Good old GE... still just Running years after all others.

[@chemech]

Baldor and Hitachi also make pretty good motors...

[@paulchamberlin5354]

@@chemech GE made absolute indestructible ones though.

[@reza49363]

Thank you

[@simonrichard9873]

You were fine with the amps. Since it's 208 instead of 230 it will draw more for the same power output.

[@lauej]

The internal energy dissipation of a motor is the same for every voltage, with the same amperage

[@roadwolf2]

Just a thought. To speed up the fan couldn’t you swap the pulley sizes

[@xeobit2781]

Thank you good video

[@cornspace]

Hvac Detective.

[@metazare]

Just like a building owner, cut corners everywhere you can and squeeze every cent. Who cares if the place bursts into flames? That's what insurance is for, right?

[@SOURADEEPBISWAS]

What have u blurred up?

[@vincetaylor3948]

Can you explain why their needs to be an air balance

[@CursedSouthwest]

What was the blurred part?

[@HVACRVIDEOS]

It was a name of the location

[@TheDime4life]

Who makes those ratcheting wrenches you have?

[@HVACRVIDEOS]

i'm pretty sure they are from Lowes I think they are the Kobalt brand

[@TheDime4life]

Awesome thanks man keep up the great videos brother 💪

[@lorenzo42p]

I think you're reading the current draw on the motor label wrong. it's the lower number next to it. motor has different ways it can be wired

[@Goesreallyfast]

The nameplate information for amps is divided the same as the voltage above it. Rated Amp draw for 208-230V is 3.3-3.0A, and rated Amp draw for 460v is 1.5A.

[@sandy1653]

That one exhaust fan is just begging for an ugly grease fire on the roof there.

[@HVACRVIDEOS]

I know right......I will be going live on KZbin this evening 11/25/19 @ 5:PM (pacific time) to discuss my most recent uploads, and answer questions from email’s , KZbin comments, and the Live chat come on over and check it out if you can. kzbin.infolive

[@phillippearl7053]

Just a guess here but I’m thinking the motor has been cycling on heat .... they just happened to catch it on an “off cycle”. That would explain a lot. I have 250+ of these go through soon, lol wish me luck! 😑

[@gbowne1]

All the rust, thats why I put Fluid Film (tm) on a lot of stuff that you know will rust. This one looks really bad.

[@wayney3851]

How would that grease on the roof catch on fire?

[@AgentOffice]

How's the pulley slow it down

[@kelly00000111111]

Agent Office I believe he’s adjusting the belt tension, opening the sheave allows for some slip in the belt?

[@AgentOffice]

@@kelly00000111111 maybe it's a V groove like a CVT

[@DESUDESU24]

I'm still curious what that disconnected fan was all about.