Make up air is critical in controlling humidity in a building. I've been dealing with a Hospital that is negative through every door in the building and that results in sweating diffusers and walls in the O.R. They've added a bunch of exhaust fans through renovations, but never added make up air to balance the air. It's a nightmare to convince an Engineer that they've made a mistake, but that IS what the problem happens to be. New Techs should be aware of the importance of make up air units. Currently we're working on locations for new penetrations and unit locations for additional MA units.
@WTF Man! : "It's a nightmare to convince an Engineer that they've made a mistake". On that note, I am a Commercial Laundry Technician. on a new construction on a College the new laundry room had a bad design on the dryers vents, 2 "L" shaped 14" horizontal pipes where all the dryers where hooked up and when I saw it strongly suggested that they must add a blower fan to blow the excess of air out due to the dryer fans not capable of getting rid of the air out. well, the College trained so called "Expert" builder changed the vent setup by eliminating one of the pipes and used single 4" pipes hooked up to the other horizontal pipe and used HVAC dampers on the dryers causing a blockage and blame it on the dryers, I went and discover several dampers blocked and told him the original fix of the blower fan was the way to go. needless to say my words fell on deaf ears so I went and removed all his HVAC dampers (the springs were too strong for the dryers) and replaced with dryer dampers and I didn't needed a degree!!!!!!
At a former job, the negative pressure was so bad that customers couldn't open the front doors, and the door closers were stressed from the vacuum pulling them closed forcefully. (Fried Chicken Franchise) What happens when you pull 80°F air at 90% RH into an air-conditioned building? Condensation EVERYWHERE. Doors, windows, floors, counters, tables, chairs... And, as usual, "Andy don't know nothing." Hmmm, now that I think of it, I have a video of that bad negative pressure issue sitting on my hard drive. Might get around to posting it soon...
Hope I never have anything done in a medical center like that the operating rooms and any other sterile areas in the medical facilities I serviced maintained and recorded the temperature and humidity and the space pressure also was .01 IWC higher than the space pressure outside in the hallway and was inspected by the department of health how are they even doing any type of medical procedures in the environment they are saying they have there should be a lot of people that are getting sick from the airborne contaminates created in operating rooms
You are being contracted to fix their issues that involve a complete system, that includes everything that has a fan on the roof that enters/leaves the building, it should be a given a client would understand examination of all equipment not just suspected. Great work.
sadly, the brushed type vs. brushless type tolls makes a huge difference in control. I've been using cordless tools wince 1995.. the later models have been far better (thanks to beter battery tech)
So happy to see you put both disconnect penetrations on the bottom. Made my night! Thanks! Drives me crazy when people put penetrations on the top in outdoor applications.
Schneider Electric ftw! I keep an old flathead screwdriver in my toolbag as a beater for knockouts and such. Torque spec is on the cut sheet in the box.
19:28 I'm an Electrician and as long as it's installed and sealed as required by the NEC (USA)/CEC (Canada), you can run your conduits in and out from any point in the Junction Box Housing you want to or available space/circumstances require... That said, it's generally seen as Best Practice to run the conduits in and out from the bottom of the boxes when you can to reduce the chances of leaks...
You are waaay to educational for my fully certified existence (mechatronic for refrigeration systems). I have stopped working in refrigeration so I watch your video from time to time reveling in the sweet noises of refrigeration and fans running constantly.
Im glad im not the only one who jumps when equipment turns on. I work on pool equipment and after you reset a board all the schedules reactivate and pumps will kick on at the same time and I jump every time.
I have also found the hood cleaners miss the perforated make up supply grills,they always plug up,acting like filters,making the building go very negative.
I stopped carrying belts also. To many sizes and there’s plenty of other common parts that go out. And if your customers take care of their equipment, you can usually tighten it to get by or have spares. Thanks for the video!
@@strimbimmin328usually it was the yogurt machines here in the convenience store and someone would put the sugar free or forgot to turn the mix feed tube the right way and freeze it up and burn the belts off 😮
I'm not an HVAC guy but I think of your videos when I go into a restaurant and you have to wrestle the door open because the balance is all jacked up. Usually Indian joints.
Years ago,I was coming down a ladder carrying my b-tank,my second step down about 16 ft,I went to take another step down,not realizing the hose had had unwrapped! My foot went into the loop,and when I stepped down,it pulled me back and I lost my balance,and I took a ride to the concrete! I hugged the tank on the way down,and landed on my left side! Miraculously only broke my elbow!
Had a few pucker moments in WNY....the wind out there can get brutal and climbing up and down a ladder when the wind is blowing can make you think of career choices. Had a few 32'-40' extensions move on me as i was climbing up or down....had my heart beating faster.
39:19 The top of the motor needs to come away from the tension adjustment plate a hair so a thin washer on each mounting bolt should tilt the motor shaft back into level...
Years ago there was a burger place that had a gas leak and it was ignited by one of the fans and blew the roof of the building. No injuries. Fire department found a bad motor seized and wrong breaker that fried the wires.
I actually ran into this today smokey inside go on the roof and all 3 running problem is 2 of the 3 have had motors chsnged in the past abd it reallu helps if you wire them for the correct rotation. People dont understand the wheel is supported to spin with bllase / using thet mark as a blade the motor should spin the.directiom that the most inner part of the blade. Or you can also go by the arrow thats printed on the inside for rotation. I bet in the last couple years ive had to change otation on a couple dozen exhaust fans because theyve been wired backwards.
I think it should be a requirement for managers of those facilities to be capable of performing routine maintenance and cleaning. To have someone there every day that is cross trained in maintenance is always beneficial
Before i started in HVAC I was a maintenance technician for an arcade restaurant. Companies don’t wanna pay to compensate their employees extra knowledge. It’s rather unfortunate
Most of them don't know food safety how to use a pyrometer to check and see if grill is cooking food properly or half way clean their equipment, and don't know something is wrong until customers complain or area supervisor makes a visit , it's sad but true. And the ones that are doing the job correct gets promoted and the revolving employee door is always going round and round lots of people come and go and never get trained properly 43 years doing air-conditioning and refrigeration for restaurants and grocery stores mostly the bigger restaurant and grocery store chains had a lot of people come and go
Those components look quite agricultural. So much easier to work on than some sun compact vehicles where there’s not enough room to get a cigarette paper in let alone any tools. Very interesting to watch.👍
I wish whoever engineers portable AC's were educated in air balance. They use inside air to cool the condenser, pipe it out, and use inside air across the EVAP. Makes the space negative and literally SUCKS in hot air through any crack or door not sealed or closed tight.
Also more you clean more it cost but you need to find that balance for cost and longevity. Sometimes it’s cheaper to do minimum cleaning on fans due to replacement cost and cleaning costs.
Two cents worth of comment, so you know it's going to be good quality and yes, do realise it's yet another anonymous person on youtube saying 'do this', but ... Consider putting a weep hole in the bottom of the enclosures if they don't come with one. Water always manages to find its way in and then get lost and never find its way out again and pools in the box. It may not fill up the box but it makes for a very humid environment in the box and things will then rust / corrode at a much higher rate. When it comes to ferrules if the terminal is a clamp type rather than a piercing screw type ferrules aren't necessary. What we'd do in Australia with stranded is twist the strands into a solid mass then put that in the clamp terminal and go from there. Again, only two cents worth so everyone can take this with the proverbial grain of salt.
Anyone criticizing not carrying all the belts is someone who doesn't work on a lot of equipment. I can see several dozen different sized belts a week. The amount of room you'd have to dedicate to belts would be insane. Then you run into the fact that belts have a shelf life. Over time they dry out and crack easy. Wasting money on the off chance you need a specific size when a few feet of power twist in A and B size will get you through any emergency belt break is insane from a business standpoint. 100ft of A or B belt power twist around $1200. give each guy 20ft and it pays for itself really quick
you missed a step on your safety check to ensure the power is off. the last step is to check your meter is still working after you verified the power is off. electricians have been electrocuted due to missing this step.
I am sure there is a good reason but why not use flatbelts for some low power fans instead of V-pulleys? I know less power transfer and maybe easier to get but it should last a lot longer?
Yeah it is made for outdoor application and is suitable for that installation so I wouldn't complain about that being installed on top but in a perfect world the bottom is better of course
I may be wrong but it looks like the motor pulleys are too deep for the type of belt. If the belt does not fit the pulley properly, it can slip causing heat and wear.
I used to do maintenance for this company that franchised certain restaurants. The owner was a cheap skate. Always argued with me about repairs. Always said that he didn’t want to pay for the repair cause he bought warranties. The fool didn’t realize that the warranties were short term.
you could stock the belts and then just pray that the manufacturer or supply house will take returns or buy the unused belts from you. if the issue is space you could buy a trailer and carry parts in the trailer.
Locked up motor and the fan and wheel are caked with dried poop lint..... no point in trying to change the motor. The fan is gonna be cheaper to replace
Some of those ridges are pretty darned huge. To properly rework the pulleys, you''d need to have a metal lathe AND the proper jigs. It's not cost effective for cast metal.
Good afternoon bro. I have a question about a hoshizaki ice machine I’m working on at work. It slowly started making less and less ice till this morning it was empty. I turned it off and turned it back on just to see what it does. So it starts compressor kicks on and after 20 seconds it completely stops. Any input would gladly appreciate it. Thanks!!!!
You might check the fan cycle switch, they can get weak over time and eventually fail, could also be low charge, old water filter, lots of options but only running 20 seconds sounds like a fan cycle switch
fire damper broken/shut on that hood? maybe a lack of makeup air and large negative building pressure? both will make the strongest exhausts win the game and the rest will suffer or even backflow in severe cases.
I was wondering on those fans if you want to amp the motor afterwards can you do it from the service switch or there is a more efficient way? Good job man i like your videos i have been learning from you!!
You can take an amp reading from any point where you can get your meter clamp around a single conductor feeding the system you want to check (you can't get a reading if the clamp is around both the hot & neutral (120V), both line 1 & 2 (240V) more more than 1 conductor in a 3-Phase circuit since the magnetic fields of the 2 conductors will cancel each other out leaving nothing for the clamp to read or in the case of 3-Phase circuits, you might get a reading but it will not be accurate if more then 1 conductor is in the clamp...
@@HappilyHomicidalHooligan My question was different. I know how to amp a motor but the thing is that if the fan cover is missing the amp draw changes. That's why i asked how is everybody doing this
@@vasileiosbakas9754on a exhaust fan that cover is only covering the motor and the bearings belt and shaft doesn't affect the air flow like a panel on a/c units only restricted air flow less amps or increase the blower speed by adjustable motor sheaves/ pulley's or change pulley sizes increase amps or wrong direction will overload the motor
Question to anyone: these mostly appear to be roughly 1:1 pulley sizes so why don't manufacturers eliminate a point of failure/maintenance and direct drive the shafts from the motors with couplers?
With the pulleys, and especially the belts, there's a dampening point. If you direct drive, any wobble will start grooving the shaft and can tear the motor apart. That's the simplistic explanation, but direct drive often suffers from premature burnout, sometimes explosively.
I prefer metallic liquid tite because if the jacket breaks from the sun the conduit Is still intact , basically it's stronger and and lasts longer in my opinion
You normally only see DD fans on lower HP setups. Like bathrooms. I still have seen plenty of VFD driven fans with belts, especially larger systems. Most of those are building pressure controlled or CO/CO2 controlled in cases like buildings or parking garages. In all honesty...i believe most choices comes down to $$$$$$....buildings want to spend as little as possible and make as much as possible.
I thought of that myself but you still need some way to decouple the vibrations from the motor shaft, as that will kill bearings quickly the moment grease unbalances the works, but otherwise agree its all about the costs. A DD motor would also be very specfic to the fan, couldn't use a good quality off the shelf motor in most cases as the sizes will be custom too as thats how they do things when reinventing the wheel, someone makes a killing off those changes to industry standards.
@@spikester Thanks, that makes a lot of sense, I guess the belt is acting like a shock absorber, so vibrations would kill the belt and pulley first instead of the motor.
@deineroehre2012 I'm sure, that's how it always works. But I would rather not have something that I never change, than not have something that I always change.
@HVACR Videos You think stripped screw holes on HVAC equipment is bad then try following an appliance tech that can't control uga dugas. Usually have to have the same exact screw for clearance issues and have to order whatever screw attaches to. Glad I don't work with that guy.
Hello again. May I suggest that on these customers that do not do regular maintenance that you start charging them every visit that includes regular maintenance to solve a lot of these problems. If they don’t wanna pay for it, then they’re not worth having as a customer. Make your life Easier. On the pulleys wouldn’t it be better to measure with a tool instead of eyeballing it? Just saying.
you should have all of the belts in your van???.....well i know what i would be telling that person and its not allowed on youtube. Like should we carry every refrigerant known to mankind. Should we carry every part for every rtu out there. You do the best ya can end of story.
European disconnect in the usa That's wrong on multiple levels 1 it's against the culture 2 it's promoting immigration 3 it's promoting overseas businesses That's why you don't see American disconnects in the eu we value our own safety
I somewhat like the eurotrash style switches/disconnects.. but the same thing will happen to them in various places across the USA and other countries due to different climates. 😉 I am harsh on everyone and try to be harsh equally, like a running through briar bushes(lol). that said I also try to be helpful as I can to the best of my knowledge. criticism currently and always has driven people to better themselves and become wiser by learning. same for having been electrocuted and showered in water(potable and sewage many times over)🤢🤮
Brother , I have a question, I had a carrier 2 stage 15 ton , 2 compressors, first stage works fine , sec stage cycles on and of, I throw my guages and find out that suction goes to 37psig , there is restriction, the system is 2 years old, no txv , I recover and took the dryer out and it was fine , pumped nitrogen threw suction while dryer is out and noticed the restriction, blew threw the liquid line and it was fine , dose that mean the evap is bad? Or those orifice headears needs replacement? If they do, how could I change those ? Or just swap with txv? I appreciate your hard work and help .
Did you change the disconnect because of that small crack? think bead of silicon would have lasted for years and saved the customer 100s? It rains very little in CA and that repair was over and could have waited till the fan replacement. You did that just to raise the bill. /
OK, so you really get to a customer with no maintenancy contract on Sundays? Must be something specific for your trade. In IT there is one rule: no maintenance contract means, the IT is considered worthless by the customer so they can wait. It is that simple. I am glad we got mostly rid of these customers without maintenance contract. No maintenance contract = no service after hours or after thursdays, for live threatening outages without service contract on weekends: 250€/h instead of normal fee of 90€/h with the contract. Not live threatening? We will get back to you after every maintenance customer is done on Monday. Believe me, the money loss is basically not worth mentioning, but having much more time to deliver perfect service to the maintenance customers or even free time with wife or friends is the counterpart to all the stress the job brings in. OK, it helps that we are rather good at our jobs so every customer keeps coming back. If they can't afford a maintenance contract, they are not our customers, there are many other companys who like to deal with chepskates - we have no time for this, we have the focus on satisfied customers who pay gladly the premium for perfect service and it works well for us. As in your HVACR Trade maintenance means you can detect possible outages BEFORE the can disturb or even stop your business. In the end, most maintence contracts are cheaper, due to the reduces hourly rate or due to less outages. Do good work, make good money with satisfied customers. That is for all trades, but some technicians or their managers don't get it, they do sloppy work and the customer thinks this is the normal way to work - it makes no fun to clean up a mess several companys before made.
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Make up air is critical in controlling humidity in a building. I've been dealing with a Hospital that is negative through every door in the building and that results in sweating diffusers and walls in the O.R. They've added a bunch of exhaust fans through renovations, but never added make up air to balance the air. It's a nightmare to convince an Engineer that they've made a mistake, but that IS what the problem happens to be. New Techs should be aware of the importance of make up air units. Currently we're working on locations for new penetrations and unit locations for additional MA units.
Sounds just like the hospital where I work, the OR staff lowering the temperature setting to low, we had to lock them out at 68 minimum.
@WTF Man! : "It's a nightmare to convince an Engineer that they've made a mistake". On that note, I am a Commercial Laundry Technician. on a new construction on a College the new laundry room had a bad design on the dryers vents, 2 "L" shaped 14" horizontal pipes where all the dryers where hooked up and when I saw it strongly suggested that they must add a blower fan to blow the excess of air out due to the dryer fans not capable of getting rid of the air out. well, the College trained so called "Expert" builder changed the vent setup by eliminating one of the pipes and used single 4" pipes hooked up to the other horizontal pipe and used HVAC dampers on the dryers causing a blockage and blame it on the dryers, I went and discover several dampers blocked and told him the original fix of the blower fan was the way to go. needless to say my words fell on deaf ears so I went and removed all his HVAC dampers (the springs were too strong for the dryers) and replaced with dryer dampers and I didn't needed a degree!!!!!!
At a former job, the negative pressure was so bad that customers couldn't open the front doors, and the door closers were stressed from the vacuum pulling them closed forcefully. (Fried Chicken Franchise) What happens when you pull 80°F air at 90% RH into an air-conditioned building? Condensation EVERYWHERE. Doors, windows, floors, counters, tables, chairs...
And, as usual, "Andy don't know nothing." Hmmm, now that I think of it, I have a video of that bad negative pressure issue sitting on my hard drive. Might get around to posting it soon...
@Sean Embry well said
Hope I never have anything done in a medical center like that the operating rooms and any other sterile areas in the medical facilities I serviced maintained and recorded the temperature and humidity and the space pressure also was .01 IWC higher than the space pressure outside in the hallway and was inspected by the department of health how are they even doing any type of medical procedures in the environment they are saying they have there should be a lot of people that are getting sick from the airborne contaminates created in operating rooms
You are being contracted to fix their issues that involve a complete system, that includes everything that has a fan on the roof that enters/leaves the building, it should be a given a client would understand examination of all equipment not just suspected. Great work.
That trigger control on the impact driver is called SKILL. Everyone needs to build skills.
Nah, I prefer Ryobi over Skill. I've got good trigger control though 🤣
Cute cat
Makita
sadly, the brushed type vs. brushless type tolls makes a huge difference in control. I've been using cordless tools wince 1995.. the later models have been far better (thanks to beter battery tech)
So happy to see you put both disconnect penetrations on the bottom. Made my night! Thanks! Drives me crazy when people put penetrations on the top in outdoor applications.
Schneider Electric ftw! I keep an old flathead screwdriver in my toolbag as a beater for knockouts and such.
Torque spec is on the cut sheet in the box.
19:28 I'm an Electrician and as long as it's installed and sealed as required by the NEC (USA)/CEC (Canada), you can run your conduits in and out from any point in the Junction Box Housing you want to or available space/circumstances require...
That said, it's generally seen as Best Practice to run the conduits in and out from the bottom of the boxes when you can to reduce the chances of leaks...
You are waaay to educational for my fully certified existence (mechatronic for refrigeration systems). I have stopped working in refrigeration so I watch your video from time to time reveling in the sweet noises of refrigeration and fans running constantly.
Im glad im not the only one who jumps when equipment turns on. I work on pool equipment and after you reset a board all the schedules reactivate and pumps will kick on at the same time and I jump every time.
FAN-tastic video Chris....thanks for dropping the knowledge....and tightening up our skills. 😂
This video was all about the V in HVAC....🤘🤘
I have also found the hood cleaners miss the perforated make up supply grills,they always plug up,acting like filters,making the building go very negative.
another thing about the extra stock on your truck.. is the extra weight you are paying in fuel to haul around.
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
I stopped carrying belts also. To many sizes and there’s plenty of other common parts that go out. And if your customers take care of their equipment, you can usually tighten it to get by or have spares. Thanks for the video!
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
Only belts I carry are for ice cream machines
@@strimbimmin328usually it was the yogurt machines here in the convenience store and someone would put the sugar free or forgot to turn the mix feed tube the right way and freeze it up and burn the belts off 😮
I'm not an HVAC guy but I think of your videos when I go into a restaurant and you have to wrestle the door open because the balance is all jacked up. Usually Indian joints.
I am residential maintenance technician but as always I like your videos
Fairytale reference fail. Gotta pay attention to the details, man.😆
Love all the content man.
Ha ha I caught that in editing.... and wondered if anyone would call me on it!!
nice job,it might be a good opportunity to grease motors and shaft bearings,thanks for sharing.
Maintain 3 point contact on ladders solid advice for sure.
Years ago,I was coming down a ladder carrying my b-tank,my second step down about 16 ft,I went to take another step down,not realizing the hose had had unwrapped! My foot went into the loop,and when I stepped down,it pulled me back and I lost my balance,and I took a ride to the concrete! I hugged the tank on the way down,and landed on my left side! Miraculously only broke my elbow!
Had a few pucker moments in WNY....the wind out there can get brutal and climbing up and down a ladder when the wind is blowing can make you think of career choices. Had a few 32'-40' extensions move on me as i was climbing up or down....had my heart beating faster.
@@jasonjohnsonHVAC I hate ladders! Federal building in Syracuse,20 foot step ladder! Took 4 guys to set up!
You guys don't invest in harnesses?
Was 28 years ago
I really injoy your videos you maintenance in perspective in owning a restaurant
Thanks for the great videos.
Every Tool has a Hammer Side!
Good job Chris, not going to criticize, but your getting better at motor repair.
Great Job Chris has always.
In 2007 My Dad was at a job he worked in the FD Going up an Ladder Step broke Fell 20ft down Got metal in his hand and elbow
Nice job Chris. Thank you for the knowledge.
I want to watch the videos of your critics and see their version of perfect!
You make great videos. Thank you
The poor performance on the flat top fan might also be due to fat build up.
Amazed that there still is airflow
39:19 The top of the motor needs to come away from the tension adjustment plate a hair so a thin washer on each mounting bolt should tilt the motor shaft back into level...
Years ago there was a burger place that had a gas leak and it was ignited by one of the fans and blew the roof of the building. No injuries. Fire department found a bad motor seized and wrong breaker that fried the wires.
Great Video. Thank you for sharing
I actually ran into this today smokey inside go on the roof and all 3 running problem is 2 of the 3 have had motors chsnged in the past abd it reallu helps if you wire them for the correct rotation. People dont understand the wheel is supported to spin with bllase / using thet mark as a blade the motor should spin the.directiom that the most inner part of the blade. Or you can also go by the arrow thats printed on the inside for rotation. I bet in the last couple years ive had to change otation on a couple dozen exhaust fans because theyve been wired backwards.
I think it should be a requirement for managers of those facilities to be capable of performing routine maintenance and cleaning. To have someone there every day that is cross trained in maintenance is always beneficial
Before i started in HVAC I was a maintenance technician for an arcade restaurant. Companies don’t wanna pay to compensate their employees extra knowledge. It’s rather unfortunate
Most of them don't know food safety how to use a pyrometer to check and see if grill is cooking food properly or half way clean their equipment, and don't know something is wrong until customers complain or area supervisor makes a visit , it's sad but true. And the ones that are doing the job correct gets promoted and the revolving employee door is always going round and round lots of people come and go and never get trained properly 43 years doing air-conditioning and refrigeration for restaurants and grocery stores mostly the bigger restaurant and grocery store chains had a lot of people come and go
Those components look quite agricultural. So much easier to work on than some sun compact vehicles where there’s not enough room to get a cigarette paper in let alone any tools. Very interesting to watch.👍
I wish whoever engineers portable AC's were educated in air balance. They use inside air to cool the condenser, pipe it out, and use inside air across the EVAP. Makes the space negative and literally SUCKS in hot air through any crack or door not sealed or closed tight.
Also more you clean more it cost but you need to find that balance for cost and longevity. Sometimes it’s cheaper to do minimum cleaning on fans due to replacement cost and cleaning costs.
I feel bad for you falling off ladders, Chris. Everyone loves you so much including me
Those building colors remind me of a yard house restaurant
Agreed with roping your gear up rather then ending up in the ER!
30:30 says thanks you
In the disconnect replacement segment, I hear something that sounds more like an old car engine than an electric fan.
i just heard it and im laughing so hard
Torque spec?!
Tighten till you hear the "crack", then call the apprentice.
Neat trick with the Seal-Tite. Thank you.
Two cents worth of comment, so you know it's going to be good quality and yes, do realise it's yet another anonymous person on youtube saying 'do this', but ...
Consider putting a weep hole in the bottom of the enclosures if they don't come with one. Water always manages to find its way in and then get lost and never find its way out again and pools in the box. It may not fill up the box but it makes for a very humid environment in the box and things will then rust / corrode at a much higher rate.
When it comes to ferrules if the terminal is a clamp type rather than a piercing screw type ferrules aren't necessary. What we'd do in Australia with stranded is twist the strands into a solid mass then put that in the clamp terminal and go from there.
Again, only two cents worth so everyone can take this with the proverbial grain of salt.
Anyone criticizing not carrying all the belts is someone who doesn't work on a lot of equipment. I can see several dozen different sized belts a week. The amount of room you'd have to dedicate to belts would be insane. Then you run into the fact that belts have a shelf life. Over time they dry out and crack easy. Wasting money on the off chance you need a specific size when a few feet of power twist in A and B size will get you through any emergency belt break is insane from a business standpoint. 100ft of A or B belt power twist around $1200. give each guy 20ft and it pays for itself really quick
I started with a few belts,now i carry over 50 LOL.
To have all the belt you would need a winnebago or a lage trailer just for belts LOL
@@adamdnewman just my customers belts many repeat.they work great on Sunday's.
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
you missed a step on your safety check to ensure the power is off. the last step is to check your meter is still working after you verified the power is off. electricians have been electrocuted due to missing this step.
22:30 Okalee dokely lol
Nice
I am sure there is a good reason but why not use flatbelts for some low power fans instead of V-pulleys? I know less power transfer and maybe easier to get but it should last a lot longer?
So he can service them more and get more money, there is a reason why lamps fail after x amount of hours
If it isn't listed, then it likely uses the German Standard Torque Spec...
Goodntite...
😄😁😆😅😂🤣
Yeah it is made for outdoor application and is suitable for that installation so I wouldn't complain about that being installed on top but in a perfect world the bottom is better of course
Also if the MUA not working, the building will sit in negative pressure. The fans will not move much air.
22:30 oakaly dokaly
A lot of loosened Belts.
There is plenty of space to mount a tensioning pulley.
It will take care of the tension and the wear out is reduced.
I may be wrong but it looks like the motor pulleys are too deep for the type of belt. If the belt does not fit the pulley properly, it can slip causing heat and wear.
Hey that was BIG picture stuff there.
Chris, that link belt on your backpack, Harbor Freight carries them, and oddly enough, they are made in USA.
I used to do maintenance for this company that franchised certain restaurants. The owner was a cheap skate. Always argued with me about repairs. Always said that he didn’t want to pay for the repair cause he bought warranties. The fool didn’t realize that the warranties were short term.
you could stock the belts and then just pray that the manufacturer or supply house will take returns or buy the unused belts from you.
if the issue is space you could buy a trailer and carry parts in the trailer.
Those ladders are evil. Especially heaving something up it with you.
What happened with the restroom exhaust fan? What was the issue?
Locked up motor and the fan and wheel are caked with dried poop lint..... no point in trying to change the motor. The fan is gonna be cheaper to replace
@@HVACRVIDEOS thanks for the follow-up.
31:16 are the plastic outdoor electrical boxes to reduce condensation?
Someone should make a jig to sand down those pulleys and sell them. Seem like a waste to toss an entire pully because of a tiny ridge
Some of those ridges are pretty darned huge. To properly rework the pulleys, you''d need to have a metal lathe AND the proper jigs. It's not cost effective for cast metal.
Good afternoon bro. I have a question about a hoshizaki ice machine I’m working on at work. It slowly started making less and less ice till this morning it was empty. I turned it off and turned it back on just to see what it does. So it starts compressor kicks on and after 20 seconds it completely stops. Any input would gladly appreciate it. Thanks!!!!
You might check the fan cycle switch, they can get weak over time and eventually fail, could also be low charge, old water filter, lots of options but only running 20 seconds sounds like a fan cycle switch
Torque spec: PFT
lol "big giant fan"
Is it me or was the walk in cooler sight glass half empty..im prob wrong ..if so ,oops on my part..
Autozone or any auto parts store sell belts
fire damper broken/shut on that hood? maybe a lack of makeup air and large negative building pressure? both will make the strongest exhausts win the game and the rest will suffer or even backflow in severe cases.
4:03 that what??????? LOL
How many years can you store an spare belt on a hot roof? I can image they get old to
The rubber is likely good for at least four years. They'll have replaced the belts at least twice in that time period.
I was wondering on those fans if you want to amp the motor afterwards can you do it from the service switch or there is a more efficient way? Good job man i like your videos i have been learning from you!!
You can take an amp reading from any point where you can get your meter clamp around a single conductor feeding the system you want to check (you can't get a reading if the clamp is around both the hot & neutral (120V), both line 1 & 2 (240V) more more than 1 conductor in a 3-Phase circuit since the magnetic fields of the 2 conductors will cancel each other out leaving nothing for the clamp to read or in the case of 3-Phase circuits, you might get a reading but it will not be accurate if more then 1 conductor is in the clamp...
@@HappilyHomicidalHooligan My question was different. I know how to amp a motor but the thing is that if the fan cover is missing the amp draw changes. That's why i asked how is everybody doing this
@@vasileiosbakas9754on a exhaust fan that cover is only covering the motor and the bearings belt and shaft doesn't affect the air flow like a panel on a/c units only restricted air flow less amps or increase the blower speed by adjustable motor sheaves/ pulley's or change pulley sizes increase amps or wrong direction will overload the motor
Question to anyone: these mostly appear to be roughly 1:1 pulley sizes so why don't manufacturers eliminate a point of failure/maintenance and direct drive the shafts from the motors with couplers?
It eliminates a point of revenue. Jk, good question.
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
@@HVACRVIDEOS appreciate the opinion/answer on the topic, thanks 👍🏻
With the pulleys, and especially the belts, there's a dampening point. If you direct drive, any wobble will start grooving the shaft and can tear the motor apart. That's the simplistic explanation, but direct drive often suffers from premature burnout, sometimes explosively.
And now imagine, what u eat in these shops...
Any certain reason you use metallic liquid-tite vs non metallic? Assuming I just don’t know the code for it.
I prefer metallic liquid tite because if the jacket breaks from the sun the conduit Is still intact , basically it's stronger and and lasts longer in my opinion
Please help me understand why not try to clean the vibrating fan before replacing? Or why not try rebuilding it?
It's all up to the customer, I give them repair vs replace quotes and they usually choose replace, I'm good either way
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
Don't miss working on the grease pit of a chain
Are direct drive rare for these fans because of the need of a VFD which is too expensive?
You normally only see DD fans on lower HP setups. Like bathrooms. I still have seen plenty of VFD driven fans with belts, especially larger systems. Most of those are building pressure controlled or CO/CO2 controlled in cases like buildings or parking garages. In all honesty...i believe most choices comes down to $$$$$$....buildings want to spend as little as possible and make as much as possible.
I thought of that myself but you still need some way to decouple the vibrations from the motor shaft, as that will kill bearings quickly the moment grease unbalances the works, but otherwise agree its all about the costs. A DD motor would also be very specfic to the fan, couldn't use a good quality off the shelf motor in most cases as the sizes will be custom too as thats how they do things when reinventing the wheel, someone makes a killing off those changes to industry standards.
@@spikester Thanks, that makes a lot of sense, I guess the belt is acting like a shock absorber, so vibrations would kill the belt and pulley first instead of the motor.
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
Berring knock on flat top?? An a 21 on new pulleys would work fine, but on warn shive pulleys will be loose my experience….
Nice job! But did you fix the restroom fan??? ;)
I address the restroom exhaust in the closing words
That's what I get for not listening until the end!
That looks like a Logan’s roadhouse lol
People are happy to point out others faults but how are they when the finger is pointing the other way
👍🏿
Wonder if you could build a database of all the parts you change to see the most common. Then, stock your truck accordingly.
You will miss the belt which is needed for this new emergency customer calling you at saturday late night. That seems to be for sure...
@deineroehre2012 I'm sure, that's how it always works. But I would rather not have something that I never change, than not have something that I always change.
- may 6th or 7th..
- to hell with the details, what year is it?
@HVACR Videos You think stripped screw holes on HVAC equipment is bad then try following an appliance tech that can't control uga dugas. Usually have to have the same exact screw for clearance issues and have to order whatever screw attaches to. Glad I don't work with that guy.
600 thumbs uP
Good grief - that whole roof was a raging fire just waiting to emerge.
Hello again. May I suggest that on these customers that do not do regular maintenance that you start charging them every visit that includes regular maintenance to solve a lot of these problems. If they don’t wanna pay for it, then they’re not worth having as a customer. Make your life Easier.
On the pulleys wouldn’t it be better to measure with a tool instead of eyeballing it? Just saying.
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
you should have all of the belts in your van???.....well i know what i would be telling that person and its not allowed on youtube. Like should we carry every refrigerant known to mankind. Should we carry every part for every rtu out there. You do the best ya can end of story.
I will discuss this on my livestream this evening 5/15/23 @ 5:PM (pacific) come on over and check it out ruclips.net/user/lived1mbaSKbOQ0
The powers that be will see your carefully photographed grease nightmare and hit DELETE!!!!
Yeah but think of all the farts.
European disconnect in the usa
That's wrong on multiple levels
1 it's against the culture
2 it's promoting immigration
3 it's promoting overseas businesses
That's why you don't see American disconnects in the eu we value our own safety
I somewhat like the eurotrash style switches/disconnects.. but the same thing will happen to them in various places across the USA and other countries due to different climates. 😉
I am harsh on everyone and try to be harsh equally, like a running through briar bushes(lol). that said I also try to be helpful as I can to the best of my knowledge.
criticism currently and always has driven people to better themselves and become wiser by learning. same for having been electrocuted and showered in water(potable and sewage many times over)🤢🤮
youtube comment section: being that annoying boss that checks your every move since 2005
This sounds like the noisiest job you have done on RUclips.
U should learn how to say "interesting" in different languages 🤣🤣🤣
Yeah that's my biggest pet peeve man it's phenomenal that how many people out there have no finger control
Belts should not be tight on exhaust hoods; you will damage the bearings.
Brother , I have a question, I had a carrier 2 stage 15 ton , 2 compressors, first stage works fine , sec stage cycles on and of, I throw my guages and find out that suction goes to 37psig , there is restriction, the system is 2 years old, no txv , I recover and took the dryer out and it was fine , pumped nitrogen threw suction while dryer is out and noticed the restriction, blew threw the liquid line and it was fine , dose that mean the evap is bad? Or those orifice headears needs replacement? If they do, how could I change those ? Or just swap with txv? I appreciate your hard work and help .
Did you change the disconnect because of that small crack? think bead of silicon would have lasted for years and saved the customer 100s? It rains very little in CA and that repair was over and could have waited till the fan replacement. You did that just to raise the bill.
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OK, so you really get to a customer with no maintenancy contract on Sundays? Must be something specific for your trade. In IT there is one rule: no maintenance contract means, the IT is considered worthless by the customer so they can wait. It is that simple.
I am glad we got mostly rid of these customers without maintenance contract. No maintenance contract = no service after hours or after thursdays, for live threatening outages without service contract on weekends: 250€/h instead of normal fee of 90€/h with the contract. Not live threatening? We will get back to you after every maintenance customer is done on Monday.
Believe me, the money loss is basically not worth mentioning, but having much more time to deliver perfect service to the maintenance customers or even free time with wife or friends is the counterpart to all the stress the job brings in. OK, it helps that we are rather good at our jobs so every customer keeps coming back. If they can't afford a maintenance contract, they are not our customers, there are many other companys who like to deal with chepskates - we have no time for this, we have the focus on satisfied customers who pay gladly the premium for perfect service and it works well for us.
As in your HVACR Trade maintenance means you can detect possible outages BEFORE the can disturb or even stop your business. In the end, most maintence contracts are cheaper, due to the reduces hourly rate or due to less outages.
Do good work, make good money with satisfied customers.
That is for all trades, but some technicians or their managers don't get it, they do sloppy work and the customer thinks this is the normal way to work - it makes no fun to clean up a mess several companys before made.