We had a call on a noisy exhaust and we found the fan was internally damaged so the customer chose to replace it.
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This video is brought to you by spore'ln quality, integrity and tradition. The inside of this fan is just totally coming apart. Internally, look up here, things coming apart. I want to start this video off by explaining a few things.
First, off a disclaimer, I'm gon na show me uh signaling a crane in this video. I am NOT an expert okay, there is some strict requirements that you technically have to follow. Osha guidelines want you to know proper hand signals, but what I find is that every crane operator uses different hand, signals okay. That may be right.
That may be wrong, but that's just how we roll in my area, depending on the crane operator they like to use different hand, signals. Okay, there's a couple: you know you, you always want to know how to do things correctly, but you know you just you. You got to know that the crane needs to understand what you're telling him to do. Verbal commands to a crane are kind of useless because he can barely hear you let alone see you.
Okay, of course, you know. In a perfect world, you've got a proper signaling person, all that good stuff. Sometimes I've even had crane operators come up onto the roof and remotely control their stuff, which is really weird to me. But anyways gon na go over a couple basic hand signals again.
These are the most common ones that my crane, my mobile cranes, use. Okay, really simple, most of my mobile cranes. When you want to stop, they want a closed fist. Okay.
Now, if you look at the proper OSHA things to do an emergency, stop you wave your hands in front of you to do just to stop. You do one hand. Okay, I tend to use this one as the stop and then this one as the all done or emergency stop. Okay, but that's just because that's what my crane operators usually want.
My crane operators usually want this to be their stop. Okay, if I want the crane to travel in a left or right or move the boom left to right, usually you just give them a hand. Signal left hand signal right. It's always best.
I find two two motion when you're moving, so that way, they know that you want them to continue moving, it's always best to, in my opinion, to always keep eyesight with the crane operator and make sure that he can see you, or at least he knows, if You're gon na step out of eyesight technically, if he can't see you he's supposed to stop again, you guys, I am NOT a certified trainer for crane operating hand, signals all that fancy stuff. You need to take a proper training class for that. Okay. The next signals is hoist up.
Okay and obviously you want, to exaggerate your hand, signals as much as possible hoist down same direction. Okay, very important one is boom down. Okay, so this is you want him to lower the boom okay, but understand when he lowers the boom. It's gon na move the load.
So with that being said, if you want the load to stay in a set position somewhat - okay, it's not always perfect! You can have him raise or hoist the load while he's lowering the boom, and simply you show him the lower the boom and you open and close your fingers. And what that means is. Is that, as he's lowering the boom he's gon na lift the load up, because, obviously he's got a load hosted by the boom right? There's a cable coming down and as he's lowering the boom, the loads gon na drop. Okay. But let's just say that we need to lower the boom in, and you know, cuz. We need the whole load to move. So if I used this hand signal right here, then what he would do is he would lower the boom and raise the load. So that way, the load doesn't hit the roof or something like that.
Okay, on the flip side, let's say that we want him to raise the boom and lower the load. Okay, move your hand like this simple as that or if you just want him to raise the boom, but again understand that if he raises the boom and he's got a load there as he raises it, that load is gon na move with the boom okay. So that's where this would come in handy if you want him to raise the boom but keep the load at a certain you know or basically lower the load or whatever. Let me see I have like a list of here because, as I show this, you guys are going to see me using these hand.
Well kind of see me using these hand signals that's pretty much it. Okay, I'm gon na try to overlay some hand signals as I'm using them during the video again. This is not like a super detailed. This is one that I just threw together.
The last thing I'm gon na say is: when I'm all done with the crane okay, I will usually again make eye contact with the crane operator make a noise. So that way he realizes I'm I'm. You know trying to signal him or tell him something and when I'm all finished, I'm gon na look at him. I'm gon na give him a thumbs up: okay, as he's usually low lifting the load or maybe he's got it suspended, or something like that.
I'll usually give him a thumbs up and then say all done thumbs up. You know usually he'll understand like hey, okay, this is we're done right. I usually don't ever walk away until he's got the load or the whatever he's lifting off of my roof. I usually like the load to be away from the roof and make sure that he can see everything we usually have someone down on the ground.
That's gon na receive it. You guys will see what I'm talking about and again need to understand. You need to go to a proper crane safety class to understand the proper hand, signals how to properly rig things. You know don't just trust what I say in a stupid YouTube video, because I am in no way certified to train anybody on how to operate or give hand signals to a crane.
Okay, all right now that I've wasted a couple minutes of your life on with the video all right. We got an early morning, we're gon na change. This guy out we've got a new fan, so it should be a pretty easy swap out no big deal. We've got a crane coming to make life even easier, so we're gon na start by hoisting the load up and lifting it off the ground. Now he's kind of controlling the load right here and he's traveling it over me. I'm gon na go ahead and step because I'm on the opposite side - and he can't see me technically he's supposed to stop when he can't see me, but you know life's not perfect, so I'm gon na step up here right now and then now I've got a Better idea of where I want the load to go: okay, I'm having to make the boom travel in this instance to my left and now he's gon na hoist the load down. Once I get the load a little bit lower on the roofline that I have an idea where I need to have him move it all stop, and now I'm gon na have him lay the boom down. I want the load to travel with the boom, so I'm not having him hoisted up, he's just dropping the boom.
Now I'm going to have them hoist down and we're gon na set down the fan on to the roof. I give him a hand signal. Let him know I'm gon na step away for a minute all stop in a perfect world. I have multiple people on the roof to help me on this job.
I had one guy on the ground and it wasn't easy enough, lift that I could handle it by myself. So I'm gon na go ahead and rig the new fan up or you know, take the straps out of the new fan, put them onto the old fan and rig it up and get it ready to lift all by myself. But you know you always want to be careful and made sure that you don't get yourself into a position that you're gon na get hurt or anything like that. Like I said this, one was fairly easy, so I can kind of handle this myself.
A really important thing right here, too, is we are using straps. These straps are very heavy-duty, so you can literally lift this entire fan with just one end: one strap, but in this situation just to make it a little bit easier, I went ahead and used it. You know and you'll see the way that I lift this fan. So I have four points of contact on the hook, but you got to make sure number one that the straps are the exact same length and that you have them placed evenly on the fan.
So that way, when it lifts up, it doesn't lift up. In a weird angle, or a different direction, this goes for anything that you lived and I've had crane operators give me straps and, like you know, two of them are longer than the other ones, and it's like hey bro. You know I need four straps that are in the you know, I'm sorry, two straps that are identical or if you're dealing with the big load, four straps that are identical. It's very important to make sure that the key gives you the exact same length, because you don't want to lift something unsafe.
Okay, at this point, I'm going to have him lay the boom down, while lifting or hoisting the load, because I'm trying to travel the hook forward so as he lays it down, I don't want the hook to hit the ground. Now he went a little bit high, but all stop and then now we're gon na hoist the load down again all stop and then we're gon na go ahead and travel the load. In my case to my right and then we give him the all stop and then at this point I'm going to go ahead and hook it up and because everything I set it up and they were all the same length as it was. This should be an easy lift, but I had to make sure that I centered the hook or the ball directly over my fan. That way. It's not lifting out an angle and potentially damaging something, and also you got to make sure that when your straps lift they're not going to grab onto conduits alright we're going to go ahead and hoist the load up now, nice and slow. Once I see that I have a nice clear, even lift, then I'm happy and once he sees the load, I make sure that he can see it. Then I give him I get his attention.
Give him a thumbs up, the stop, tell them we're good to go, but I have to make sure that the load is off of the roof notice. How I'm gon na stand here and watch it, because I want to see that load and he can still see me, but I want to make sure that load is completely off the roof all right. We got our new fan. The cranes out of here we're just gon na set this guy on there, and then we got some work to do conduit, hinge and all that good stuff.
So we'll get to it all right. So this fan is that's why we use their claims. We say I'm gon na set it on there. It's gon na be big for the curb see how I want to position.
It think about saving a good, because it has to be able to hinge so sit down. Try to like predict what it's going to do when the hinge. I think I got it figured out little Milwaukee danceOn, all right, so we've got all the while we need I just kind of measure you're gon na fish, the wire through the conduit, which shouldn't be hard. So what I do is I take the end of it.
So that way, it fish is through really easy. Sometimes I get lucky and it'll push through. Sometimes I might have to disconnect the conduit okay, okay, so, okay, I'm just trying to get an idea. What we need yeah.
This looks easy we're just gon na. Do you know one thing I need to learn proper terms. I have my own name for all this stuff call these four connectors, nice and snug always pull on them. After make sure they're nice and tight there's no power hooked up, it's turned off and I always take my receptacles and or switches.
So that way you can pull them out while they're live next time, you don't have to worry about them. Getting shorted out it's one of those things think about the next guy yeah we're gon na leave that pulled out, because we want to be able to actually know we can test for a draw down here so notice. I'm gon na put it in okay, even though I have these locked out and powered off, I still treat them like they're hot, be careful, they're, hot and treat them like that. So that way, just in case you don't get a surprise I'll leave those untape. So I can check voltage, switches off and you go downstairs, turn power on and will come up and test operation. So if this thing doesn't blow up in my face nothing's in the wheel, let's see there's a paper, so I stick my hand in there make sure. There's nothing there we're gon na turn it on and we got to check rotation and there's an arrow and it's rotating the correct direction. Watch your eyeballs blows crap when it turns on this.
One has one of those stupid, Rhea stats and I can't take it off because it's a main fan and they have to be able to balance it, but I hate those real stats. In my opinion, they ruin the motors alright. Well, we got to do the hinge kit now it's running well test current here in a little while I ended up having to redo everything, because I put a hinge kit on here and the conduit where I had to put the hinge kit on the other side. So so we've got a hinge kit.
So now this exhaust fan can hinge all the way up. One hand, nice and good. So we're good on that, but we're gon na do the startup now so this guy I was just getting down in here on the motor nameplate down there, it says 9 amps is what we're allowed to run. So we're going to start this guy up and test the current.
First and foremost, we got to check voltage 121 point 7 volts. So we're good on that and then now we're going to fire it up and see what happens. The initial end rush gosh. This thing takes a long time to get out eleven amps, so we're over amping we're gon na give it some time.
Let it run for a minute and then we'll probably slow it down. It's actually already slowed down. That's why I was running high amps. That makes more sense, so I sped it up all right.
That's at max speed. Eight point, four three, eight point, four. So we're good. As far as our current draw goes, I'm gon na leave it at max speed and we're gon na.
Let the balance guys adjust the speed accordingly. All right, we are finished up. I just have one last thing to do: is just seal up those holes with some silicone from the old hinge kit, so we don't get water down in the thing, but yeah everything's, good fans, running customers happy all right, hopefully that video didn't turn out to be A disaster I kind of wanted to show the whole crane hand signals thing yeah. I don't know if I quite like the way that it turned out, but I think you guys get the gist of it.
So we had an exhaust fan that the motor and the internals of the fan basically came apart. The motor had come unbolted. It was starting to damage the shaft of the motor. Looking at the fan, it was a relatively inexpensive fan.
I went ahead and gave the customer a quote to replace the motor and they decided to go ahead and replace the fan. Now. This particular customer actually replaces their own fans, they buy their own equipment, so they just shipped me. The fan and I put on a hinge kit fixed the Elector, you know, did the electrical and started it up, so you guys saw that in the beginning of the video I had it all set up, but then I realized again. I didn't just walk away from the fan once I had it all wired up. I put the hinge kit on and then I hinged it and realized that the electrical whip that I had made was not long enough, so I had to redo everything. Okay, it's very important that you're testing every feature of this fan. When you put hinges on them, you open close them open close them.
You know you turn the light. You know the power switch on and off on and off. You know you just test. Every single feature you do a proper, startup and commissioning on it.
Okay, now I did find I did mention in the video that this one has what I call those stupid. Little rheostats, the speed controllers, but it's not anything. It just basically reduces the voltage. It's not a fan of these little rheostat speed controllers.
You will often see him on 115 volt motors this believe it or not, is a three-quarter horsepower 115 volt exhaust fan, which seems so silly to me what a waste of electricity, but they would have been much better off going three-phase on the roof. This is, I think, one of the only restaurants I have that has a single-phase, 115 volt main exhaust fan. I see those on like little restroom exhaust fans all the time, but whatever blew my mind but anyways I was you know. I went through everything, but I pointed out the fact that that little rheostat I hate those things because, in my opinion, they ruined motors and what happens is that people go and slow them down and don't test current.
And then it just you know, ends up burning up the motor if at all possible, I like to cut them out, but being that this one is on a mainline exhaust fan, the the balance company has to come out and adjust the air balance on it and They need to make sure that they have it set up correctly, so I had to leave it on for now at least that's pretty much it guys. I really appreciate you guys taking the time to watch this. Video leave me some feedback, I'm sure I'm gon na get a lot of feedback on this one because of the crane hand, signals and stuff, but let me know, let me know what you think, I'm always looking for criticism feedback, anything! Okay. I really appreciate it.
Remember I do live streams Monday evening 5:00 p.m. Pacific time work permitting, of course, but with the whole you know health thing we got going on across the world right now, you know works pretty slow. So hopefully I should be there on Monday. Alright really appreciate it and we will catch you guys on the next one: okay,.
Are the back draft dampers not code there? Just wondering I’m in Missouri and we have to have them.
Done that many times!
The only thing I would add is a tag line. But I'm used to lifting hundreds of feet not 10s. Thanks for the video.
My God I hate all of your after video commentary or in this case your prolog. You're talking to either other professionals who don't need all of your hand gestures or persons who only, enjoy watching all of your hands on work. YOU ARE NOT HOWARD STERN!!!!!!! Stop making 1/3 to 1/2 of your videos about your needing to talk down to people or just reiterating everything you said during your service call. If you are popular you will be able to sell your products. I hate people who constantly are trying to sell their swag. The best channels do not need to point out that they have shelves of product. Perhaps just comment that you're constantly running out of swag and then people will be interested.
Spending 2000 for a crane is stupid for a 500 dollar exhaust fan.
When the crane call cost more Vs remplacement fan call .
Are you using rotators for some of these jobs. Are you in Barrhaven ?
I call them terminal lugs.
Is pdi atlanta a manufacturer's of loren cook upblast roof fans or does pdi order them from loren cook are they a subsidiary i got mine new from a city discount in Georga to pull steam out of my hobart conveyor dish washer i called loren cook cause it said it was a pdi fan but my sales pink slip says its a loren cook i needed a part so i called loren cook but it says it comes up pdi atlanta but acity discount told me to contact loren cook my fan is on a old middle schools hobart dish machine that is now a special needs school and recreation facility that i own it was replaced because they previous school boards maintenance nevertheless kept it up but is loren cook have anything to do with pdi atlanta or is that just they equipment supplie houses brand and they get them from loren cook
Hey Chris, those rheostats give you job security!!!
Hmm I've worked on a roof truss carne truck for years now and I as the operator have never took a class let alone a class on signals
So different kind of video cool
Training class was not all that bad
Having a speed controller that increases current with reduced speed does seem wrong. Where does all the extra power go?
We call those "Strops" in Britain
Why choose to change the whole fan?
what are these fan things for? i click on your video to see what this is. i love your detailed explanation to what you are doing but i am not so sure about everything 😊
Funny thing came to mind from the hand signals. Truck driver asked me to signal him to reverse out of a narrow path with extra wide load, which he had just taken on his truck bed by the hiab-crane he had on the same truck. I was happy to help and did it with Finnish army signals, which are basically done with fully extended arms and are very clear. As the truck got out of the hardest section, one of our crew members got to me and said my signals were wrong and was not happy at all for what i did. Just a minute later the truck driver got out and came to say "wow, that was easy, no one on the construction sites uses that clear signals" 😀
Always assume the circuit is live even if you know it can't be… capacitors can hold charge for a while and you can't be sure it's not powered just because it is disconnected
Personally, I'd have taken the speed controller out and used that box for the power switch and let the Balance Company adjust the A/C and/or Make-up Air Units to Balance the Building…
But that's just me and like you, I don't like the speed controller on that particular Fan because the motor Over-Amps at anything below 90% or so of Max.
That broken safety latch on the hook.
there is textbook correct and real world correct.
Are you not required to have a license electrical contractor do the electrical in your area or state? Are you in Ottawa ?
In Europe you'd often see knuckleboom crane (hiab is one brand) used for this type of job. Part would be transported with the same truck, and likely crane operator would remotely control the crane from the roof. Also I've seen typically crane operators do the rigging themselves. Or if they have customer help them they'll instruct and verify the rigging.
(I just want to point out I commented this just as a curiosity – I don't claim one way would be better than another) Service area Barrhaven??
I like the hinge kit. NICE
I like how you tape the connectors. SAFETY for the next guy
I unbolt it and throw them off the roof. Making sure NO ONE is in proximity of the landing of the fan.
NO crane rental
we are about to do our shutdown at work for 2 months of RTU replacements and repair. We will take 8 units off the roof because we have a 300 ton chiller and a huge TRANE AHU that was installed 3 years ago but never active. Started it up this year and we have MAJOR issues already.
I have worked in the maintenance industry for 20 years. Your hand signals are correct. Everyone should be trained in the same manner. There is a GOVERNMENT Standard. I have been trained the same way on every job.
New exhaust fans (for applications like kitchen, bathroom, dishwasher, etc, etc.) could take time because you have to set the motor pulley sheave, match the size with the new drive pulley to the old pulley, and match the new idler pulley to the old one. (Only applies to the belt drive exhaust fan.) If this is a direct drive exhaust fan, you have to set the speed using a solid state speed control to match the speed of the old exhaust fan. If the new exhaust fan has a different centrifugal blower wheel size, the adjustments will have to be a little different.
I own a beat up cherry picker. It's got a bunch of problems. But it's never off tangent.
Dear OSHA: my safety harness when climbing is a noose around my neck.
Too much talkie talkie.
To simplify the hand signal issue is every time we use a crane, I have a mandatory meeting with the operator an the guys to go over common am basic signals together. Makes life way easier Service area Kanata??
Here in buffalo NY we only use cranes for rtu replacements everything else we use a scissors lift . Even tho using a crane for a 30+lb. Exhaust fan is way over kill working smarter and not harder is the way to be. Great video
No retention cable so the fan isn't stressing the flex? I'm not sure of the strength of that particular product. I've used aircraft cable to hold the fan to the curb when it's hinges open, it's cheap.
There's nothing like doing a crane yourself, at least it wasn't a package unit or make-up-air all by yourself.
You are a dying breed my friend……..part of why I retired. Very few techs give a s*&t
Hahahaha bro you need a crane to hoist a exhaust fan 😂😂😂😂🤣🤣🤣🤣
Man I love your videos!! So informative so in depth! Wish I could get my guys to fall in with the big picture diagnosis. I have to call it cover your ass to get it across to them. Because in covering your ass you check everything and are less likely to have a call back. Great work and keep it up!!
What type of hinges do you use ? Service area Orleans??
I'm so glad I stumbled upon your videos. going into school soon for hvacr and will be in the field shortly and your videos are amazing! I love your dual zip tie trick, thats such a good idea
Had a few crane lifts. First step in any crane left; communication, communication, communication, let me repeat;communication, you make sure that the one directing the crane guy (and only that person is directing the crane operator) is talking the same Swahili hand signals the operator is. (Doesn't matter what the bureaucrat says) and you exaggerate your motions to be sure that the crane gets that message. I've also poured a few hundred yards of concrete. biggest bitch drivers had was the person directing them was barely using their hands (like they were self conscientious or embarrassed)
Second point is let the crane set the load. that's what its there for. Worked a home depot job lifting 20 ton units even thoghit was supposed tombe mt job my supervisor was a on the roof and
I know your in California so I don't know if this would would because of the heat but get a GoPro with an accessory kit. Lol wanna see everything your doing. Anyway your videos help me alot. Your one of the best on here. Keep them coming. Are you in Orleans ?
The day you assume it’s dead is the day you die cause it’s live. Service area Nepean??
Fork connectors —> "What are spade connectors?
Spade terminals, also known as spade connectors, are a type of wire terminal that may be either crimped or soldered to the wire for electrical connection. A spade connector may be either a male or female spade connector. Spade terminal sizes are based on both the size of compatible wire and the width of the spade."
When you thread the cable through the flexible conduit, bend the leading end over on it's self. Tape it so you have a loop and flatten it. The cable will thread through the conduit easy as
Thanks for sharing with us brother