Filters 101 with Joe Hunt – Dusty Jobs Podcast – S2 E5

by Erin Long | Sep 7, 2021 | Uncategorized

Donovan interviews our new guest Joe Hunt for this episode of the Dusty Jobs Podcast. Joe talks about his history in the filter industry. Joe goes over the different parts of a filter and how to spot a cheap filter. He also explains the difference in filter medias and what to look for when picking a filter for your application.

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Narrator: Welcome to the Dusty Jobs Podcast from Imperial Systems, industry knowledge to make your job easier and safer.

Donovan: Hello, welcome to another episode of the Dusty Jobs Podcast. Glad to have you with us today. In the studio is Joe Hunt. How are you doing Joe?

Joe: Fantastic today, Donovan. Thanks for having me here.

Donovan: Great. Joe’s actually our very own Imperial Joe here. And Joe, tell us about yourself. You’ve been helping out with filters for, man, how long now? How long have you been doing this filter game?

Joe: Now you’re going to date me Donovan, come on now, you know, I’ve been in the industrial air filtration market for over 25 years, going back to the nineties

Donovan: Yeah, so you have a little bit of knowledge in this field.

Joe: A little bit of knowledge on the filter side of the business here, for sure.

Donovan: And that’s what Joe’s here talking to us about today he is going to be talking about I think we’re going to call this Filters 101.

Joe: I like that.

Donovan: Yeah. Just, for anybody out there, who’s trying to maybe understand a little bit more about the filters that are going into their dust collector. Maybe you’ve been tasked with getting a new set of filters or something like that. We’re going to try to help give you a little bit more knowledge of what you’re looking at because man, this, this doesn’t come up often for a lot of people maybe once a year or every two years. Right?

Joe: Yeah, it could be anywhere from six months to a year or two and sometimes in gas turbine, we’ve seen them run for eight to 10 years and it’s a little bit of a different industry, but those filters are being used there as well

Donovan: Right. So, if this is your first time buying or you’re just trying to figure out what you’re looking at that’s what this we’re going to be talking about today. So, Joe, tell us a little bit more about yourself. You’re here, you came on board with Imperial and you’re really helping. What aspect are you helping out with here?

Joe: I’m working on really a business development working on a channel distribution, trying to expand that portion of the business with Imperial, for aftermarket, dust collection filters. My experience goes back to… I started out with Donaldson and that was more of the media side of the business. Worked there for seven years in and took a job with Clarcor and started up their cartridge business at Clark filter. And that’s where really the cartridge portion of the aftermarket really started to grow.

Donovan: Yeah. So, you mentioned that you used to do media. So, when we’re talking about media, we’re not talking about, you know television or things. We’re talking about filter media.

Joe: Filter media, filtration media.

Donovan: That’s right. So, that’s the actual material that goes in the filters. That’s what’s doing the filtering.

Joe: Correct.

Donovan: But there’s gosh, how many different types are they out there?

Joe: Many, many different types, you start off with a paper type of media, and then you can go all the way up to different types of exotics, you know, where you go from low temperature, low efficiency to high temperature, high-efficiency types of exotic materials that are out there. So, different ones that are coming out each year.

Donovan: So, exotics would be for a very specific application?

Joe: Right, very niche market.

Donovan: Gotcha. So, probably if you’re buying that filter, you’d know a little more about that. So, let’s just talk about what are the basic medias that people might be run into? When someone’s out there, like I said, maybe they’re trying to buy a filter for the first time, or they’re looking at a collector and they’re trying to decide what’s best for their application. What are some of the more basic ones that people get into?

Joe: What we see mainly are what is considered a paper type filter, and this would be a filter made of 80% cellulose and 20% polyester. Okay, and then you have different variations of that. So, you have the 80/20 paper and an 80/20 FR, which is fire retardant. And then from there that is the lower level that’s more of a commodity type media, and then you go from there and you start upgrading. And from that point, that’s the lowest cost, but the lowest efficiency as well, and the lower performing filter from there, we start stepping up, we go from there to a nanofiber, nanofiber with FR and then that’s for more tougher applications.

Donovan: So, you’re saying nanofiber?

Joe: Nanofiber.

Donovan: I mean, what is that? What does that mean for somebody who doesn’t know what that means at all?

Joe: Nanofiber is a coating that they put over the top of a certain type of substrate, which would in this case be an 80/20 paper. So, what it is a very fine nylon fiber that goes over… It’s invisible to the human eye. So, it’s only a couple of microns wide. And what it does is it really puts a surface coating on that media.

Donovan: So, wait, let me ask you a question really quick. When you say micron now, that’s I mean, I know that’s a unit measurement, but give me something to compare a micron to.

Joe: All right. So, a coarse human hair is about 80 microns. So, if you take your hair, pull it out and look at it. It’s about 80 microns. These, fiber diameters are maybe two-micron, one micron. So, you can’t see it with…

Donovan: Almost 80 times smaller than your hair.

Joe: Yes, yes.

Donovan: Okay. All right. So, we have our basic paper and then we’re putting this material that is so small you couldn’t even see it without a microscope on top of it.

Joe: That’s right

Donovan: And that’s called nanofiber.

Joe: It’s nanofiber coding.

Donovan: And it does?

Joe: Well, what it does is it protects that paper. It keeps the dust from penetrating into your paper. So, all of these filters that we manufactured, the collectors that we manufacture are back pulsing style collectors. And what we want to do is we want to keep that dust on the outside of the filter. So, when we’re back pulsing, the dust blows off, drops down into the hopper.

Donovan: So, the pulse goes on the inside of the filter and knocks everything.

Joe: Knocks all the dust off.

Donovan: Okay.

Joe: So, what this does is it allows a natural dust cake so that the particles don’t penetrate the paper. And it’s kind of like your Teflon frying pan. You know what I mean? Your egg is an there it slides around. It’ll keep that dust on the outside pulse boom. Drop it in.

Donovan: So, you’re saying if I, if I got the nanofiber material on it, it’s going to help that filter clean off better, and hopefully lasts a little longer.

Joe: It’ll definitely last longer than a standard commodity 80/20 paper.

Donovan: Right?

Joe: Absolutely.

Donovan: So, if there’s somebody out there and they’re seeing really short life out of their filters, possibly this could be a solution to help them have a longer life out of it.

Joe: Oh yeah, absolutely. Absolutely. It’s one of the best available technologies we have out on the market right now in filtration media. Now that’s not to say we’re not working on new medias to bring to the market, but right now the nanofiber is very useful for many different applications.

Donovan: So, what’s some, dust that I would say, I don’t want to use this regular 80/20 paper on, but I should definitely be thinking about doing this nanofiber and what would be an example of something that would be, oh man, you don’t want to use regular 80/20?

Joe: Well, the 80/20 is great for general uses. You know, when you have particle sizes that are much larger. So, you’ve got wood dust, cement stuff where you have very large particles. Now, when you get into welding, weld fume, plasma, laser cutting that’s where you’re going to have smoke, which is very, very small particle sizes. And the nanofiber is head and shoulders performance level over an 80/20 in those types of applications. So, if you have a sub-micron anything less than 10-micron particle size, you definitely want to use a nanofiber.

Donovan: So, not only is it clean and better, but it’s helping capture better also.

Joe: Your emissions go way down.

Donovan: Oh, wow.

Joe: Yep. Absolutely.

Donovan: Now, okay. So, we got those two, now you’re talking about, now I’ve heard this term out there and a lot of people ask me about it and it’s MERV, the MERV of the filter. Now there’s a MERV rating on filters. And I know this is a term that gets thrown around a lot in the industry and maybe you can unpack what that means for someone who’s just trying to figure this out for the first time.

Joe: Yeah, so, the MERV rating, I mean, it goes back to the ASHRAE 52.2 test and it is a static test and it was really developed more for the residential type of HVAC type of filters. Where they are non-pulsable filters, so, it’s a static test where you have a media and you present air, and then you present particles into the air stream. And then you test how efficient the filter media performs against those different sized particles. So, the less efficient you have a lower MERV rating.

Donovan: Okay.

Joe: So, it starts down at a low MERV six, and then as you move upwards in efficiency where our media is like a commodity type 80/20, like we talked about earlier. That’s going to be about a MERV 10, somewhere around there, nine and 10. And then as you move into the nanofibers, there are different varieties out there, but our nanofibers, are MERV 15. So, the efficiency definitely takes a rise when you add that coating of nanofiber to the filter.

Donovan: So, the larger, the MERV rating,

Joe: The more efficient…

Donovan: The more efficient it is.

Joe: Yes.

Donovan: The lower the MERV rating,

Both: The less efficient.

Donovan: So, like when I get my furnace filter in my house.

Joe: Yes.

Donovan: That’s going to be like a six or a seven, just kind of in a catch that cat hair and the lint going through.

Joe: Correct.

Donovan: But if I’m trying to get weld smoke …

Joe: Yes.

Donovan: That furnace filter is not going to do it for me.

Joe: Nope. It’ll go right through it.

Donovan: Right. So, that’s where they came up with this standard of MERV to try to help…

Joe: Minimum efficiency rating value is what it stands for.

Donovan: Now, something else you said that when they test this, it’s on just a static system. It’s just how much can actually get caught in it. It’s not…

Joe: Yeah. So, it’s not actually like our filters are being back pulsed during the life of the system of the filter itself. This test is just a static, where there is no back pulsing taking place. So, it gives you a good initial efficiency rating, but it doesn’t give you that true look into how that filter is going to perform in the field.

Donovan: So, is there not to get too deep into the weeds? Cause we’re on 101, not getting into the advanced levels here.

Joe: That’s right.

Donovan: Is there other…?

Joe: There is an ASHARE, 199 out there that will test, a filter based on the performance in a dust collector.

Donovan: Okay. So, this would be a separate test, a separate form of measurement.

Joe: Yes.

Donovan: To give you a rating on maybe of a dust collector filter, as opposed to just like a…

Joe: It, could give you the performance of the collector and the filter.

Donovan: Got it. So, it’s kind of has, it’s like a hand in glove situation.

Joe: Yes.

Donovan: I got you,

Joe: Yes.

Donovan: So, if you’re really getting into it maybe when Joe comes on next time if we do a 102, we can do a…

Joe: 102.2.

Donovan: That’s right.

Donovan: We’ll get a little more into the weeds on that. So that’s great, that’s great. So, okay now I know if I’m going to buy a filter for the first time. I know what kind of material I’m looking at. I kind of understand my ratings now. Now I want to know when I’m looking at … I mean, I’m talking for someone who’s never bought a filter before, possibly. How are they going to know whether this filter that’s a is better than filter B or maybe this one’s $10 more than this one? How do I even tell what I’m getting and why should I pay more, 10 more dollars for it possibly?

Joe: Well, I mean, when you start.

Donovan: How do I evaluate that?

Joe: When you start looking at the filter, you’ve got end caps,  you’ve got expanded metal inside, outside, you have bands you have different types of Plastisol.

Donovan: Wait, wait, wait.

Joe: Urethane,

Donovan: Slow, slow down. We got people here who probably never, ever heard. Maybe they’ve never seen a filter. So, you’re, you’re starting to talk about all…these are all the parts of the filter?

Joe: The components of the filter,

Donovan: Okay

Joe: The anatomy thereof.

Donovan: So, when someone’s looking at it, let’s, let’s start at the top and move down through. So, the first thing, if I’m looking at a filter is going to be the?

Joe: You’re probably going to look at the gasket.

Donovan: Okay.

Joe: You’re gonna look at the gasket first and there are different types of gaskets.

Donovan: Now, that’s simple. That’s going to be the seal on the top.

Joe: That the filter is going to seal into the tube sheet against,

Donovan: Or press against another filter.

Joe: Or press against another filter.

Donovan: Ok so we are going to look at that. So, when I’m looking at that, what am I looking for?

Joe: So, there are different types. Polyisoprene is a standard, but what you want to see is you want to see a nice closed pore gasket.

Donovan: Okay.

Joe: Something that’s going to have some good memory to it. All right, something, that’s not gonna, once you push it against that tube sheet, it’s not going to form a very small and tight gasket. You want a very nice seal. You want that to expand. You want to be able to pull it out in that gasket to still have some expansion to it absolutely. The next thing you’re looking at is the end caps.

Donovan: Okay. That’s what the gasket going on? That’s the piece of metal.

Joe: That’s the gasket sitting on a piece of metal, that’s holding the filter together. Okay. And the filters that we make here all have metal end cap end caps on either side. And what that does is it allows the paper or the media inside the filter to be potted.

Donovan: Okay.

Joe: So, you’ve got a cap on either side. Now, while we can get into all the different types of caps out there each OEM really has a different style.

Donovan: I got you.

Joe: And that’s a tough part of being in the aftermarket is we have to specialize in all these different types of filters that are out there, but getting back to the, to the caps. You know, to see a good filter, you want a nice heavy cap. You know, there are, there are, there are ways to save money while manufacturing. But one thing Imperial does is we, we go all out, we are building tanks here. So, we have nice deep caps so that we can get the potting compound in there and we’re not skimping on that potting compound. You’re seeing the media.

Donovan: So, we’re talking about the end cap. And then, so it’s kind of like a rim around the top.

Joe: A rim around the top.

Donovan: And the bottom, and now you’re using this word potting compound.

Joe: Correct

Donovan: That now what is that? Is that the…?

Joe: So, we’re using a urethane. It is a glue. You can think about it. It’s a urethane that we take the cap and now we fill the cap up with urethane. And then we put the media down into the cap.

Donovan: It’s like planting the media into the thing. So, potting compound, I don’t know if that’s where they came up with that.

Joe: It’s like potting a plant.

Donovan: Yeah. Like potting a plant.

Joe: There you go.

Donovan: Potting the media.

Joe: Absolutely.

Donovan: I got you. I’m with you. I’m tracking. Okay. So then, there’s one that goes on the top. There’s one that goes on the bottom and then this potting compound. I mean, can I even tell, like how would I know what I’m looking at? Or is there something I should be looking at when I see that?

Joe: Well, you just want to make sure, like, what we do here is we put plenty of potting compound in there. You want to see it rise to the top of the cap because it has to enclose each pleat of that media or else, you’re going to get bypass. And that’s what happens with some of these filters, they’ll go into the field and they won’t be potted correctly either they’re using, you know off-brand caps or they’re not putting enough either plastisol or urethane in their potting compound. And you can get bypass, we’re talking about, you know airstreams with sub-micron particles in it. You have to make sure that that filter is potted on both ends and that all those pleats are secure held in there so that there’s no leakage.

Donovan: So, that’s, that’s just another place that everything needs to be sealed up. Well, so it’s a potential fail point, I guess. So, to make sure if you’re looking at a filter for the first time, it’s your job, you’re out there and they’re saying, well, is this a good filter? That’s something you could look at, look down into the caps, looked into the pleats and see if there’s gaps. Or maybe it doesn’t look like it’s filled up all the way.

Joe: Correct.

Donovan: Those would be some good telltale signs…

Joe: That you have a good quality filter.

Donovan: Or you don’t.

Joe: Or you don’t.

Donovan: That’s right. So, then we have the top, we have the bottom and the middle is the…

Joe: The media, that’s the heartbeat. It’s the heartbeat of the filter. That’s the portion of the filter that’s doing all the work. So, that’s the filtering mechanism.

Donovan: Okay. But there’s, I mean, if there’s just media there, wouldn’t that filter just collapsed, is there anything that’s holding, giving it some structure?

Joe: It will because that media is, like you said, if it didn’t have any support mechanism, it would just collapse on itself. So, what we have is expanded metal, expanded steel on the inside because remember these things are getting back pulsed, but they’re also getting a lot of negative pressure.

Donovan: Oh, that’s true.

Joe: So, all that air, that dirty air is hitting the outside of the filter, the clean air is coming through the inside and going out through the system. So, yeah, we have expanded metal on the inside and it gives a nice sturdy …it’s like a spinal cord to the filter.

Donovan: I got you.

Joe: Yeah, absolutely.

Donovan: Yes, the rigidity.

Joe: The rigidity of the filter. And, that’s very important to have a nice heavy interior core, what we call an inner core of the filter. Now you talk about the intercore we got to talk about the outer. Cause again, you’re getting that negative pressure, which could collapse a filter, and then you’re having these filters back pulse with 90 sometimes you’ve ramped up to a hundred PSI. So, you need something to keep that filter from ballooning. Gotcha. So, we talk about expanded inner, we have expanded outer as well. And then we’ve got other options where we have a nice cording, a helix cording machine that puts a cord around it. Some more open than an expanded steel outer. So, it allows the filter to clean a little better, but what it does is it keeps the filter together and allows for it to still clean without ballooning and exploding.

Donovan: Now I’ve seen that on, on the filters here. It’s almost like a shoelace, it like wraps it around so that it keeps it, but it’s still you’re right. It leaves a lot of the material exposed so that you can …now some of them have, I’ve seen them with bands.

Joe: Correct.

Donovan: That’s another method.

Joe: That’s another method. You can have a polyester nylon woven bands on the outside.

Donovan: Okay.

Joe: Yes.

Donovan: And then there’s the actual metal, like you said too now is the reason for doing it one way or the other, could that come down to the application if someone’s saying, well, how do I know which one do I need?

Joe: Yeah. It is more application specific. The outer expanded normally is used in an application where you have finer dust. When you get to a more fibrous dust, you want to use something that’s more open and that’s where you would use the banding or the cording. And really in all honesty, you could use the cording all the time.

Donovan: Okay.

Joe: I mean, it does give that good support and it allows it to clean. I think in what we have seen here, it cleans better than the outer expanded.

Donovan: Well, that’s good news because the cleaner, your filter is the longer it’s going to run. Right?

Joe: Yeah. Well, we don’t want them to last too long Donovan.

Donovan: Well, that brings up a great question. How do I know when it is time to change my filter? I mean, should I open the door and look at it? Is that going to help me? What’s the way to tell?

Joe: Most places will have a PM set up and they’ll change at a certain pressure drop. So, as these filters are being loaded over a certain period of time pressure’s building up in the system. So, they are, they start out clean. So, it’s a low pressure drop over time, the dust is building up. The filter is losing its performance and your pressure drop will rise. And some, companies will have it set at eight inches of water gauge to change the filter out or 10. Normally we see between six and eight is where you would change your filter. But in reality, when you really want to change your filter to some of those gauges, we’ve seen in the past have gone off. Where your pickup point is, this is very important when you are not picking up. So, if you have a grinding or, or a welding application and you are not evacuating that dust or smoke, or it’s very little evacuation, that’s when you want to seriously start looking at changing your filter.

Donovan: Now when you’re talking about looking at that pressure, am I looking at that when the machine is running, when it’s not running, like before it cleans, after it cleans when do, I actually… When’s the best time to evaluate that?

Joe: When it’s running.

Donovan: Okay.

Joe: Absolutely.

Donovan: And then, when it’s cleaning or when it’s not cleaning, when it’s done cleaning

Joe: Well however, the equipment is set up whether it’s on time or it’s on demand. Once that cleans, I mean, that’s just a millisecond time of a shot of 90 to a hundred PSI. So, that gauge is only going to move a little bit. It’s not going to drop from eight to four, you know, over time it could change. But after a quick cleaning cycle, it’s like a shotgun blast.

Donovan: I gotcha. I gotcha. So, if there’s a maintenance person out there listening to this and they’re thinking, oh man, I gotta, I put these new filters in and they open the door and they look at them and they’re like, I just heard it clean. And these things are covered in dust still is there something wrong with their filter? Are they using machine operating wrong or?

Joe: No? And we’ve, talked about this and we’ve had both of us have had calls before saying, hey, look at my filter’s dirty. These were supposed to be cleaned off. You know, you’re saying once it’s pulsing it’s supposed to clean off. Even when the filter’s in there and it’s in there for a certain period of time, it’ll establish a dust cake. So, it’s going to look dirty. The filter will look dirty and it’s just a natural dust cake on top of it and that’s kind of how it performs. And that helps along with say you have a nanofiber; you’ve got a natural dust cake on top of the nanofiber. It keeps those larger particles from penetrating and getting inside of the media itself.

Donovan: So, it’s actually helping the filter to work better. Once it gets, I know we call it seasoned or it has a little bit of the dust on it. That initial dust gets on it and it actually makes it work better.

Joe: It’ll get more efficient. Absolutely. Absolutely. Even a MERV 15, it will be more efficient once it gets what we’re talking about, seasoned or pre-coated or coated in the system. Absolutely.

Donovan: So, if you’re listening out there and you, and you got a brand-new filter and you open the door and you’re, you’re worried, don’t have a heart attack.

Joe: Its working.

Donovan: That’s right. That’s what it’s supposed to look like.

Joe: Absolutely.

Donovan: So, then basically your pressure and your pickup is going to let you know when you need to get a new filter, right?

Joe: Yes.

Donovan: So, those are the two key indicators if your operators are saying, hey, this thing is just not doing what it’s supposed to anymore, or if you’re watching your pressure gauge or monitoring that daily, that’s going to also give you a good key indicator on that specific unit.

Joe: Yeah. I mean, that’s, that’s what it’s there for. It is to give you that heads up, like, hey, it’s time to change the filters. And your owner manual will tell you normally when that is, and each collector is different. Each application is different.

Donovan: Well, Joe, I just want to say thanks for coming on. I appreciate it. I know you got way more knowledge that we’re just scratching the surface here. So, if you’re listening to this and you have other filter questions or other, or need a filter feel free to call in we have a whole team of people here with a lot of knowledge and we’d be glad to help answer any other questions you have or if you need anything else. Like Joe said, we do build them here. We sell them here. So, we have a lot of knowledge in what we can help you out with. And that’s it just saying, thanks for coming on today.

Joe: No thanks. I can’t wait to come back for 102.2

Donovan: 102.2.

Joe: I’m really excited about the ice cream as well.

Donovan: That’s right.

Joe: You promised me ice cream.

Donovan: It’ll be coming after the show.

Joe: So, awesome Donovan, thank you.

Donovan: But I just wanna encourage everybody if you’re not doing it already to follow us on Instagram, Facebook, LinkedIn, Twitter you can find us on iTunes and all of our old episodes are on YouTube also. So, I encourage you to like, and subscribe us there. So, until then stay healthy and stay safe. And we’ll talk to you next time.

Joe: Hit that like button

Narrator: Thanks for listening to the Dusty Jobs Podcast. Breathe better, work safer.

Trade School with Mercer County Career Center – Dusty Jobs Podcast – S2 E4

by Erin Long | Aug 31, 2021 | Uncategorized

For this episode of the Dusty Jobs Podcast we had three visitors come from the Mercer County Career Center. They all gave us their thoughts on the Trades and how important they are to the growth of our country. We also talked about how it makes sense to come out of the Career Center with a trade and into a huge job market and start making money right out of high school.

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Narrator: Welcome to the Dusty Jobs Podcast from Imperial Systems. Industry knowledge to make your job easier and safer.

Donovan: Hello and welcome to another episode of the Dusty Jobs Podcast. Today joining us is Lori Stainbrook, and she’s joining us from the Mercer County Career and Technical Center. Hi Lori, how are you doing today?

Lori: Great, great. How are you?

Donovan: Great. We were talking before this and your career title, your job title is so long, I just figured I’d let you introduce yourself. What do you do in there again?

Lori: I’m the Cooperative Education Coordinator at the Mercer County Career Center.

Donovan: Okay, and that means what? What are doing?

Lori: So essentially what I do is the students that are in their shops, they’re learning their skills and usually by their senior year, they’re prime and they’re ready to go out and find work. So we get them in and we address the soft skills. We get their resume together, their cover letter and we put it out there and find them a job.  Sometimes they find their own job. So what I do is I just transition them into the work force, essentially.

Donovan: You’re taking them from- they’ve been learning these skills the whole time while they are at the Career Center, and you help them actually get out there into the real world?

Lori: Correct. 

Donovan: So it’s that step, That first step possibly into somebody’s first adult careers, huh?

Lori: Correct, right.

Donovan: You’re helping them with that. That’s great. Now how long have you been doing that?

Lori: One year.

Donovan: One year?

Lori: I did it part time the year prior too, and of course we had COVID last year, so it was kind of an interesting year. But we got about forty students out in spite of of it being COVID.

Donovan: But you’ve been with the school for longer than that haven’t you?

Lori: I have, yes.

Donovan: How long have you been with the school?

Lori: Probably… it’s been twenty-four years.

Donovan: Oh, my goodness.

Lori: Twenty-four years.

Donovan: So, you have a ton of experience with helping out with kids learning trades, and, and things like that.

Lori: Well, mainly health care. So, I’m an uh, RN by trade, so I started teaching with the LPN Program which is the adult, nursing program License Practical Nursing. That was part time and I started with the high school students in ’97, and so that’s the health careers program, and it prepares for really any career in the healthcare field. They get their nurse aid, they get a bunch of healthcare certs, so they can hit the ground running and get in healthcare.

Donovan: Right, so that’s great stuff too- I mean, we need more nurses every day.

Lori: Indeed

Donovan: So, over the last twenty years-so, I don’t know, I feel like there’s been a little bit of a shift in the mentality of how people look at trades. So, if you would go back twenty years when you started this what do you think the mentality was back then or how people looked at trades. Do you think it’s different than today? I’ll let you speak to that.

Lori: I think it’s definitely changed. I did a lot of PR work for my program, so I would go into the high schools and I would talk about healthcare and there are varying levels of healthcare. So, you can get out iamb essentially have no education and be working in healthcare. You can get a two-year degree. You can get a four-year degree. So, the Career Center was kind of a hard sell because most of the counselors at that time were under the impression that most students need to go to four years of college to be able to come out and be successful in really any field, and you know, the healthcare field for sure. So, nowadays I’m seeing that counselors are a little bit more open to students maybe coming to the Career Center-and even higher-level academic students.

My daughter, in fact, started at Penn State Behrend in engineering, and decided to come to the precision metal program, her senior year to get some hands-on experience. So, she did that and you know was very successful and then was able to do an internship. The last two months of her senior year which really kind of opened up, you know, employment and she was able to get some hands-on experience as well. 

Donovan: Yeah, yeah. And that’s, that’s something you typically won’t find in a standard education setting, you know, is that this hands-on experience. You can get internships, you can get placements, and we have some students here that have come from Mercer County Career Center. Now they’re working with us and they came through that same process where they started in, and now they’re actually working for us. But we can get to that in a minute. So, I also felt that way like, back in the nineties-maybe there was a, maybe a little bit of people looking down their nose at some trades.

Lori: A stigma, sure.

Donovan: There was a stigma about it. And I don’t know, I think our culture has seen a shift in which, trade jobs…I don’t think they are a low paying job anymore.

Lori: No.

Donovan: I think you can make a good living at it these days. I think it has become a little bit more of a, I don’t know, a field of people who are able to accomplish things with their skill and with their hands as…looked upon in a little bit of a higher light than it used to be.

Lori: Most definitely, and then you get out there and you are an entrepreneur and you start your own business. I mean, those are the people that are successful for this day in age.

Donovan: And you can do it when you go to a school like yours. You can do it with little to no debt because of the ability to start right out of high school with an education that’s provided by the county. Okay, so that’s where we were. Am I summing this up pretty good? You can speak more to it if I’m missing anything.

Lori: Well definitely, I think, and the counselors are the gate keepers for our, you know population at the career center. I  think they’re a little more open to the fact that there is a success level with the students that come to the Career Center. I mean we’re placing them in jobs. They are making a good living, you know. The hours are good and like I said they are able to go on and possibly form their own business and become very successful.

Donovan: So that’s kinda this-where we are at right now with the trades. Where do you, you know as someone who’s seeing and you guys probably have a lot of knowledge on this. Where do you see the trades are gonna go in the future?  Do you see them slipping backwards? What do you think the future of trades is gonna be?

Lori: Well, college is expensive. It really is and there is a definite need for people to be working in the trades. So, the jobs are there. We need to fill them, so I think it’s really important that we train and, you know, that’s where the jobs are – that’s where the money is.

Donovan: Are you guys still seeing a real uptick in job openings for thing? I mean like we have welders here in that.

Lori: Yeah. We, we couldn’t fill the job openings. I have a hiring board at the school and, you know, we don’t have enough students that were career ready to fill those positions.

Donovan: Let me get this right, you have more jobs right now than students that are able to fill them. 

Lori: Correct.

Donovan: So, I mean that’s great. So, a student could come, come to the school, learn how to do a skill, come straight out of high school and you guys would move them directly into a job.

Lori: Most definitely. Now there are a lot of jobs that have pre-apprenticeship programs whereby those employers would, you know, continue their training on but, yeah, a lot of them are career ready.

Donovan: That’s great. I mean, that’s great in this day in age that you could move right out of high school and right into a good paying job too.

Lori: A good paying job, right.

Donovan: I know, uh, a lot of welders get into a shop where they have not only, you know, good pay, possibly full benefits, 401K. There’s a lot of those opportunities out there. And I think it’s great that you guys are able to help and get people on that path very early in life.

Lori: It’s rewarding. It really is. I enjoy it.

Donovan: Are you guys seeing anything with robotics or automation? Do you think that’s going to effect anything in the future?

Lori: Possibly, you know, we have people getting injured on the job, you know, you have back injuries, repetitive motion injuries, and technologies come a long way so I’m sure, we may have robots to fill some of those repetitive nature type of positions.

Donovan: That’s true yeah.

Lori: But, uh you know, we have to have maybe somebody to run that, so we do have two computer programing, and the one’s new, at the Career Center, so.  

Donovan: So you guys are even on board for getting people ready for that?

Lori:  Correct.

Donovan: That’s great. I know if you go back to one of our previous episodes we talked to a gentleman named Paul and he actually does robotic welding. So he handles that. So you could go back and listen to that episode at some point if you haven’t heard it out there, and he talked about how even though you have someone whose running that welding robot, you still need a welder who knows what that weld is supposed to look like. They might be there supervising a robot, or checking on a robot, but that person still needs to know what a welding is supposed to look like, what it’s supposed to do, so I think we are going to see some of these welders transition into supervising possibly two welding robots where they know what that weld is supposed to be like because they’ve done it themselves, and they have that knowledge and can speak from experience.

Lori: Sure, sure, you have to have that background and then you can move into the higher tech positions.

Donovan: Right, exactly, exactly. So, we’ve worked with you guys on a couple people who have come work for us. So, what’s that like? Tell me what that’s been like working with Imperial on getting some students in the Career Center.

Lori: Well I have to say, you guys are great as far as getting the students, you know, in here. I had a student. She was a female welder. So I called up and I said, “Hey,” you know, “she’s ready to go out,” and you guys were really gracious, you know. You made the transition really easy. You made my job easy. That was the good part. She was a little intimidated to come out into the work force, and she was actually thinking about, continuing her welding education after the Career Center. So, the counselor and I sat down and even the welding instructor said, “You’re ready, you, need to go out.” So she started here, and I guess she’s doing great things.

Donovan: Yeah, yeah, I think she’s fit in real well in the shop and I see a lot of people who are older, older guys in the shop who have been welding for a long time and they’ve really, not only her, but the other people from the Career Center that have come in, they take these young people and they…I think they have an appreciation for people their age coming in. They pull them under their wing and they want to make sure that they are doing a good job because it’s something that they’ve been doing their whole life, and I think they want the next generation to appreciate it as much as they do.

Lori: And that’s what it takes, and that’s so important. You’ve got to train them because those people will be retiring and we need a whole new crew. 

Donovan: And that’s what you guys are doing, helping to get that next generation ready, to keep America moving and make it so we can still build things in America, so we can produce stuff here and we need the people to be able to do that with the knowledge and skills.

Lori: Definitely.

Donovan: That’s what you guys are doing out there at the Career Center. Is there anything else you want to share? Is there anything else you want to talk about at the Career Center. 

Lori: Well, there are fourteen other programs. Any student that’s thinking their on the fence as far as a career, come visit us. Like I said, we have a range of different programs. We have the soft skills and we have what’s called the heavy shop with automotive, diesel, welding, etc, entrepreneurial. So, it’s a great way to explore different careers and just kind of get your feet wet and maybe it will branch out into something permanent. 

Donovan: Yeah, that’s our hope. Lori, thanks so much for coming on. We really appreciate you sharing your time and information with us about the Career Center and how students can get involved. How you guys are working to shape the future of a lot of working class Americans to get them on the right track, to making a good living and helping build our country. 

Lori: Thank you for supporting us as well. We really appreciate having you in the community. 

Donovan: Now we have joining us Avery Lockwood. How are you doing today Avery?

Avery: Pretty good. How about you?

Donovan: Good. Thanks for asking. So you actually are now working at Imperial, but you started at the Career Center, correct? 

Avery: Yeah. I went there for two years, and I loved it there. I didn’t know if I wanted to go on to more schooling. I’ve been at Imperial for two months. I started doing co-op. My welding instructor knew I had it in me just to go straight into work instead of going on to more school. 

Donovan: Now, co-op…that’s where you are still in school but they let you come to work for a little bit. Is that right?

Avery: Yeah, that’s where I go to my home school for the beginning of the day or even in the afternoon, however the school does it. Then I would go to work for the other half of the day.

Donovan: Do you feel that really helped you gain some confidence to be able to move into the working world?

Avery: It definitely helped me, because I got comfortable here before I started here full time. I mean, I could have kind of gone anywhere with it and then come here, but I’m glad I stayed here. I was comfortable with the people. I knew who the people were and that kind of stuff.

Donovan: So what’s your experience been like so far here at Imperial? How do you like it?

Avery: It’s pretty good. I’m definitely getting used to some of the stuff that I’ve never done before like driving the forklift or even the cranes. It’s simple stuff that I was never taught. I enjoy that. 

Donovan: So, who is teaching you that here? 

Avery: Kind of pretty much everybody. I mean, all the guys are extremely helpful. I can go up to any of them and they’re extremely supportive. I know how many times the guys have asked, “What got you into welding? You’re a girl. What got you into it?” I’m just like, “I don’t know. It wasn’t really anything. I just love getting my hands dirty and having fun with it.”

Donovan: I mean, was that it? Did you know somebody else that was a welder, or did you just decide this all on your own? Like, “This is something I want to do.”

Avery: I actually had a buddy of mine…me and my family have a pulling truck. So there’s this family friend, and he’s just like, “Hey, I’ve got to fix some stuff. Do you want to come try it out?” At that time, like three years ago, I had absolutely no clue what I wanted to do. My older sister was going to nursing school. My family kind of wanted to push me to go to more school, but I still had absolutely no clue. So I’m like, “Give it a try.” So I went and welded some stuff up for him on his pulling truck and he’s just like, “You actually have a pretty good knack for that,” and I’m like, “Okay, guess that’s my skill.” So that’s just what I started to pursue. 

Donovan: And so far you’ve been enjoying it?

Avery: I’ve been enjoying it, yeah. Very much so.

Donovan: So what all do they have you doing here at Imperial? What are the welding tasks you’ve been given?

Avery: A lot of different positions, and how to weld. Normally at VoTech it’s just the same stuff. At VoTech you just did a little plate of whatever and then here it’s just absolutely everything. Like, I’ve done stock work. I’ve done stuff that is actually going to be shipped out. I’ve been enjoying it.

Donovan: How do you like actually seeing something turn into something?

Avery: That’s something I’ve actually seen myself be proud of because I’ve never really had to build anything and it goes somewhere else. It’s always just like you cut a piece and then you throw it away. So seeing something actually be put into something else and then it working out.

Donovan: Yeah, and I mean I think it’s neat. I’m not in your guy’s department. I don’t do the welding and fabricating. For me, I think it’s great that we’re building something that not only helps keep people safer, but keeps people healthier. I think it’s cool to see those go out the door, to see our equipment go out the door and know that it’s going to go to another place where it’s going to improve people’s lives. It’s not just the next cool thing that someone’s going to have or it’s going to wear out but it’s actually a safety thing that helps people feel that it’s going to be better and help other people who are welders and who are in the trades that it’s going to make their lives better and be healthy when they go home to their families at night. I really appreciate what you guys do out there and I think everybody out in the shop, including yourself just puts out a really great quality product. So, we’re super glad to have you on our team. Do you have anything else you want to say to anybody who is listening out there who is thinking about getting into welding, who is thinking about going to the Mercer County Career Center? 

Avery: Just do it.

Donovan: Just do it?

Avery: If it’s something that you want to do, and even if you don’t even have any slight interest or anything before that experience, just try it out. I mean at the Career Center you don’t have to pay for anything. It’s not like schooling that you would have to go for two more years. Just do it. 

Donovan: Just do it. 

Avery: Just do it.

Donovan: Well, thanks so much for coming on. I appreciate it.

Donovan: Hello, and welcome to another episode of the Dusty Jobs Podcast. Today we have Grant Gilhousen from the Mercer County Career Center with us today. How are you doing Grant?

Grant: Good.

Donovan: Good. So, what’s your role over there at the Career Center?

Grant: I’m the lead welding instructor at the Career Center.

Donovan: So how long have you been over there doing that?

Grant: I just finished my eighth year and this upcoming year will be my ninth started. 

Donovan: Wow. So you’ve got a little bit of experience…

Grant: Little bit, yeah.

Donovan:…bringing these young kids up in the trades.

Grant: I try to do my best.

Donovan: There you go. Well, we know you’re doing a good job because we’ve got a couple of them in the shop here and they’re doing a great job. You haven’t always been over at the school, right? Did you go to the school prior to teaching there?

Grant: No, I actually graduated from Franklin High School in Venango County. So, I went to Venango County VoTech for welding there. 

Donovan: I got you. Then you moved into actually welding for bit?

Grant: Right. The day after graduation I started in the trades.

Donovan: Right into it?

Grant: Right into it.

Donovan: So you didn’t have to do any job searching or nothing. They got you right into it.

Grant: Yep.

Donovan: That’s interesting how that happens when you go to the trades. Sometimes you can start right out of high school making money in a good job. So how long were you there?

Grant: I started at Witherup Erection & Fabrication and I was there for probably six months or so and go laid off, went to another tank company, was there for another six months or so, got laid off. So, I knew I had to get something a little more stable. I went to work at Joy Mining Machinery in Franklin and I was there for five and half years until I started teaching.

Donovan: I have to imagine that time actually being out in the field, being at a couple locations, actually welding has to come into a huge part of being able to teach these young kids what it’s actually like out there in the real world.

Grant: It is. It’s nice to be able to tell them that if they’re doing something I’ll say, “You know, this isn’t going to fly in the real world, in a real shop. Those guys are going to eat you up if you act like you are.” That’s one thing you can actually tell them. That’s not going to work in the real world. You really have to have your head screwed on straight. Safety, horseplay – none of that will ever fly. As well as learning the little tricks and secrets from the older guys that have been there for years on years. 

Donovan: That’s interesting. That’s a good point. You’re not just teaching these young people about the skills that they’e going to need but it’s about how to be safe in an environment, how to interact with others in an environment because in a shop it’s not just you. You’re usually working with a team or other people, right? That’s almost as much of a skill as actually welding.

Grant: You have to be able to communicate and work well with others. I tell them all the time. Those old boys in the shop, or women, they’re going to take you under their wing if they like you and they’re going to show you everything they know. If you don’t do that, those guys can make you look real bad real quick.

Donovan: So that’s great to know that if you go to the Mercer County Career Center you’re not just going to learn about welding, you’re going to learn about social interaction in the shop.

Grant: Right, soft skills.

Donovan: Soft skills.

Grant: A lot of soft skills in there too.

Donovan: That’s a new term for me. I’m going to keep it. I’m going to tell my kids at home that they have to learn some soft skills. That’s great. So, coming from working in the trades to where it is now. You started in probably 2007, working in the trades?

Grant: Yes, yeah.

Donovan: Now it’s 2021. How have you seen the transition from maybe the mentality of how people looked at the trades or how that interaction with what it meant to be a welder then and what it means to be one now. What’s been your journey been through that process.

Grant: Even whenever I was in school, if you went to VoTech you weren’t one of the smart kids and the people that stayed at the home school, they were the ones that were going to college to make all the money. It’s still the same mentality these days, but what’s funny is in the long run those people that don’t go to VoTech, that stay for their core classes and that, they’re usually the ones looking for a job and they’re however many thousands of dollars in debt. If you go to the VoTech or a trade school like that you can go right into work and start making your money. So, I mean there’s always that mentality that the people that are staying at the home school are going to be better in the long run but time and time again it shows that it’s not true.

Donovan: We’re around the same age and I can remember people saying, “Go to college. Go to college.” I think that mentality is actually driven a lot of people out of the trades and now we have this huge gap. We have this space where we need a lot of people to do this work and not a lot of people that know how to do it and not a lot of people with a lot of experience in it. So, its almost a deficit and it’s not helping our society. We need people who are going to come back and work in America and make American made products. 

Grant: Right.

Donovan: I think that’s what you guys are doing over there. Not only have you helped teach the next generation to do it, you’ve been out doing it. So, there’s that gap. We were talking a little bit before we got on the camera here about how I think there has been a little bit of a shift in how people view what people used to work as factory work or welding work or that kind of stuff. I think it’s become a lot more of a respectable profession within our culture and community. It probably should have always been but we’re starting to see a little bit more people come around. Is that something you’re seeing with the young kids coming in, that they’re viewing it that way?

Grant: Yeah, I think that people are finally seeing that the trades are not a bad thing. It’s not the old dusty, gloomy look of the fifties and sixties. Things are a lot healthier nowadays. The pay is great in most situations. Everybody is trying to make things come back to America, you know, American made. The only way to do that is for people to go out and work in those industries. 

Donovan: Do you think that’s going to be the future of where we see things going? You think we’re still going to see a need demand for skilled trade laborers?

Grant: I definitely think so, especially when every year more and more baby boomers are retiring and leaving the area. They might go down to Florida or something. We definitely need people to fill those spots. I mean I started whenever I got out of high school and started working. You could see the older generations guys go in flocks of ten or fifteen every year retiring. I’m sure it’s still like that, you know. You might have guys that are sixty and seventy years old retiring. 

Donovan: It’s that crew of guys that’s been working together almost their whole career and when one of them goes they’re all about ready to go. Man, I can only imagine that it’s not only a big gap in the actual work force, but a gap in the knowledge that those guys have built over the years. These younger people being able to get in while those people are still there and gain as much as they can. You know, that’s another thing that’s really interesting about the trades. You can learn a lot of basic skills when you’re in school but once you’re on the job site like you’re saying that’s a continual education that you’re getting paid for. Your employer is like, “I want you to learn more and be better at your trade.” They’re willing to help basically take another person who has been there for a long time and say, “Mentor this young person,” because they know it’s good for them. Instead of you paying for that education, your employer is paying for it by continuing to help you along. I know that’s encouraged in our shop for the older guys to help the new people coming in to get them along because that’s just better for everybody in the long run. So, one of the things we always talk about is the health and shop environment. You know, we build dust collectors here, but I mean, I’m sure you’re probably seeing that hopefully there is less of a concern from young people coming in to the trades that there is a better, healthier environment to go work in. Is that a concern people are still having or do you see that that is something that is maybe going away?

Grant: Especially with welding, I think there is still the concerns, and, “Oh, you’re breathing in this and that.” Those are the people that have never stepped into a shop before, especially a newer age shop. It’s not like it was back in the fifties or sixties where you walk into a building and you can’t see the other end of it. Theres so much technology and smoke suckers and respirators and that now. Everything has been upgraded so much. Really, if you wear all your PPE there’s very minimal health concerns. 

Donovan: So, if there’s a young person out there listening to this or if there are parents listening to this and they’re a little bit hesitant about their kid getting into the trades because of health hazards, I think, like you said, we’re getting better at that every day. 

Grant: Everything has advanced so much, even since I’ve been in the shop working. I mean things have just been crazy how they’re advancing. 

Donovan: Well, just as a closing thought here, do you have anything else if someone is out there listening to this and they’re thinking about getting into the trades or getting into welding, what would be some words of encouragement or anything you’d want to say to them as they’re trying to weigh what they should do with their future.

Grant: I think to anybody that is on the fence of going to a VoTech or a trade school or staying in their home school, think about the long run. Don’t think about…I mean, you’re going to have to make some sacrifices, obviously. You might not be able to do choir, or you might not be able to do band, or something like that, but think of it in the long run about what you can better do for yourself. I mean, you have the opportunity of a free education for a two or three year program through a VoTech that if you graduated and took the same type of program, a year and a half program at a satellite trade school somewhere, you’re looking at $20,000 at least. So, I mean $20,000 compared to maybe changing a couple classes or doing something different in high school to a better look into your future, to me that’s a definite benefit.

Donovan: To be able to come out of your high school career debt free with a skill under your belt ready to make some money and walk right into it, that is a big leg up these days.

Grant: Yes.

Donovan: Well, hey, thanks for coming on. We appreciate you taking a minute. We appreciate all the students you’ve taught over the last couple years and all the great work they do here. So, if you are out here listening, we just want to say stay healthy, stay safe. Follow us on Instagram, Facebook, LinkedIn, Youtube , and Twitter and we’ll talk to you next time. Thanks.

Narrator: Thanks for listening to the Dusty Jobs Podcast. Breathe better, work safer.

Weld School Chooses CMAXX Over Snorkels to Breathe Easier

by Erin Long | Aug 31, 2021 | Uncategorized

A career center in West Virginia needed efficient ventilation to create a weld school in their existing facility. While many companies had suggested installing snorkel arms, this would rely on students to move and properly use the arms. The school needed a better solution. They wanted to effectively remove weld fume without extra effort from the students or administration.

The Situation with Fumes in a Weld School

A school district in West Virginia was preparing to convert a childcare training area into a weld school. This was happening at their Career and Technical Center to fill the local demand for trained fabricators and welders.  Imperial Systems’ territory manager Mitch Augustine was tapped by a sales partner in the weld gas supply industry to meet with the school’s team looking for ventilation systems.

The Evaluation

During initial discussions, Mitch quickly identified the team’s desire to capture the smoke and fume effectively at the source. They intended on relying on the snorkel arms that Lincoln Electric, Miller Electric, and others had proposed. However, there’s an issue with using extraction arms. Because the effective capture area is limited, students must keep the arms in the capture zone. This creates a reliance on the students to consistently maneuver the flexible arms as they focus on their tasks.  It was important for the administration to keep the space clean and clear of smoke and haze. But they didn’t want to rely on their instructor to “police” the students’ proper use of the extraction arms.

Mitch took this into consideration and suggested that the school consider weld fume hoods instead of fume arms. These hoods allow the students to focus on their tasks without the worry and burden of adjusting fume arms. Weld fume hoods are oftentimes the solution for a more immediate capture than an ambient collection system provides.

The Solution

Imperial was awarded the project and fabricated custom hoods with LED lighting and offset overhead fume extraction. This keeps the smoke and fume out of the operator’s breathing zone. Most importantly, It requires no adjustments or action from either the student or instructor at the weld school.  Ultimately, 24 hoods, a Spark Trap, and a 16-filter cartridge CMAXX Dust & Fume Collector were supplied. Professional installation was done by Imperial’s own OSHA-trained field crew. The Spark Trap ensures that any sparks collected by the hoods are eliminated before reaching the dust collector and filter media.

Weld School Success in Extracting Manual Weld Fume

After several months of active training in the weld school, the space remains clean and smoke-free.  The instructor reported that the installed system is both effective and easy to use. “Simply turn the thing on when we get started and the room stays clear and smoke-free. This system is so much easier to use than any of the other portable-type units with the flex arms that I have always used in the past.  I guess it is best to leave the fume extraction to the real experts and let the welding guys supply the welders!”

CMAXX Rids Stumble Hazards from Tumble Blasters

by Erin Long | May 6, 2021 | Uncategorized

A customer in the Oil and Gas industry needed a new dust collector to replace their old one. The old collector was inefficient and creating workplace hazards. The customer needed a more efficient solution that would properly gather the dust created by their tumble blasters while reclaiming the shot for later use.

The Situation

This major supplier to the Oil and Gas industry needed to replace an aging dust collector installed on three tumble blasters, their surface preparation machines.  A new dust collector was needed because the system was not sized properly. Further, it was pulling too much air in certain places and not enough in others.  Their dust collector and ductwork were also just completely worn out.  The customer had shot media falling on the floor due to holes in the duct.  This was causing slip and fall hazards.

Tumble blasters use a process of tumbling parts within a housing that spins to expose all sides of a part.  On the side of the housing, there are typically multiple wheels.  They rotate at high speeds and sling abrasive shot media into the housing. This is how they clean or prep the outside edge of a part.  The shot creates dust from the part and the blast media breaking down.

A dust collector is needed in the process to ensure the dust is removed and allows the reusable shot to flow through and back to the wheel.  When done properly, this process saves the end-user a significant amount of money on replacement shot media. They also get a more desirable surface on their part.

The Evaluations

The company contacted Tri-State Industrial Contractors, a local contractor, to specify the best dust collection system for the project.  They in turn brought in Scott Davis of Air Solutions, Inc., an independent manufacturers’ rep firm. They specialize in industrial ventilation solutions and represent Imperial Systems.  When he arrived on site, he learned that they already had been quoted a 9,000 CFM Donaldson Torit replacement system.

Instead of taking that Donaldson Torit quote and offering a similar size dust collector, Scott reviewed the system to ensure that Air Solutions was providing the right equipment for the job.  While reviewing the system requirements, it was determined that Donaldson’s quote did not include enough air for all the drops. This system required 11,000 CFM.  When selecting and sizing a new dust collector, it is very important to give the system adjustability.  There must be enough air to clean the dust from the shot, but not too much suction that reusable shot is pulled through the system to the dust collector.

The Solution

Air Solutions did the most thorough evaluation of the customer’s needs including replacement ductwork and a new dust collector.  Education was provided for the customer regarding the blast machine dust collectors and included a review of several requirements for a successful blast filtration project:

• All drops should be balanced with air bleed-in fittings. This allows the end-user to reduce the air at the blast machine by bleeding air into the duct.  This process maintains the duct velocity in the trunk line to ensure settling of dust does not occur.
• The conveying velocity in the duct needs to be high enough that the dust and spent shot do not settle in the duct. This is a significant safety concern.  If conveying velocity is not maintained and materials do settle in the ducting, the ductwork could collapse or fall due to excessive weight endangering personnel and processes below.
• Energy savings are realized by using a VFD airflow controller. The VFD allows the dust collector to run at a consistent designed static pressure in the ductwork to maintain the same airflow when the filters load and the pressure drop increases through those filters.  When the filters are new, the customer saves energy because the fan does not have to consume as much electricity to draw the required air volume.

Dust Collection Masters for Those Tumble Blasters

Ultimately, the customer selected Air Solutions and Imperial Systems to provide a CMAXX Dust & Fume Collector.  The CMAXX is a perfect fit for multiple reasons.  The absence of external hardware and the domed roof offers a leak-free design.  These features combined with the lifetime warranty gave the customer the peace of mind to install the dust collector outside.  Robust, heavy-duty construction also ensures a long life for the machine in an abrasive blast application.

The CM012 model was selected for this project. The CMAXX was sized for 11,000 CFM with an air-to-media ratio (AMR) of 2.62:1.  An integral 40 HP, top-mounted fan was used to provide the design air volume at 12” w.g. static pressure.  This dust collector was installed during the summer of 2018 and at publication has only required one filter change.