This video demonstrates cleaning and testing a ductless system including pulling the blower wheel and washing the evaporator with the Rectorseal Desolv kit.
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and find our handy calculators at https://www.hvacrschool.com/
This is Jesse with kalo services. Today we will be going over a preventive maintenance process with a ductless system, we're at a customer's home, we're doing the ductless maintenance, as well as the central a/c, we're primarily going to focus on the preventative maintenance on the ductless system. Using a couple new products as well we'll just get right into it. First, we're gon na just get set up.
I like having the tool pouch with me, so today we're gon na use the dissolve kit. That's gon na be for cleaning the coil and everything like that, this one in their maintenance agreement. We agree to pull and clean the actual blower wheel every visit, but also we're going to use the dissolve kit to really get that evaporator coil in the housing of the system perfectly clean for them it's in their master bedroom. So that's a really high priority for this customer all right, so just a basic pump, sprayer disolve kit I'll hook up the shop back to the condensation line at the outdoor unit.
That's going to help me when I take the unit apart to prevent any water coming out of that drain pan. So here's the outside unit, it's a gravity drain on this particular system. That's what our copper when drain line is in so our drain line is gon na stick out right here behind this bush, so I'm gon na go ahead and hook up the shop back to that it'll be a little bit noisy and then we'll go inside. First.
We're gon na do the inside portion of the maintenance and then we'll come out here and do the run test and complete the maintenance on the outside. So first I'm going to set up our drop, cloths stepladder and then we'll bring in the dissolve kit and go from there. So here's our dissolved kit, it's really nice, so the design on this is once we take it. Apart we're gon na pull and clean the actual blower, then we're able to hook up this bib and actually use our pump sprayer and completely clean the coils without pumping the system down removing the whole indoor unit.
You know which could be a five hour process. This helps eliminate having to go through all of that. It's gon na come with the cleaner. You can dilute it up to four to one, so that would be one part: cleaner, four parts water today, I'm gon na do about 50/50.
Then it's going to have the support bracket and this actually hooks up to the back portion of the ductless unit. Then we're gon na have our bib. Actually, in comes a little cleaning brush that you can use kind of, helps clean it out, and then this bucket is actually used. So once we actually have the bib up after cleaning it and everything spraying it down.
All the dirty water is gon na flow into the bucket itself. Then you can just carry that out: dump it out and you're good to go. First, I got to take the unit apart, remove that blower wheel and then we'll go from there all right. So I'm just gon na go ahead and start taking everything apart.
I like to take everything apart and actually bring it outside and clean it pretty basic. These you're gon na got clip on either side top part. Pops off you've got ta. Have your two washable filters? Those are definitely ready to be cleaned now this one too, I don't know if you can see it or not, but all right. So then, here you're gon na have your veins see little tabs pop out. Then you have your housing plates here and here, big stink. Don't lose these poor clips on the upper portion here here here and here this one there's enough room on the top, where you can actually fit your hand on the top portion? If you can't, you can always reach through here and kind of push down as you pull out again all these parts I'm taking off, I like to actually bring outside and spray down with the cleaner. So here's your drain, pan so you're gon na have a clip kind of here here and here this comes out and this whole portion actually slides out.
So, even though I vacuumed that there's still a little bit of moisture in here, not a lot, we had a conference trips that fell down, but you know we got a waterproof drop cloth here. That's why that's so important to have, even if you're being careful, there's always the potential for a little bit of water to splash around than here. If you want to bring the angle in a little bit closer, so you can kind of see the condition of it. The actual blower wheel and the coil you know in the dirt and stuff that's on there, so there's a decent amount of buildup on the actual blower wheel itself.
And then, if you look closely, you can actually see some build up on the evaporator coil itself, which just happens. You know that's normal. Alright, so in here is our set screw loosen up that set screw we're gon na lift up on this portion. You're gon na have your little bearing for the blower and, at this point we're pretty much ready just to pull the blower wheel out itself.
We're gon na just take that out and clean it in the yard, with some cleaner as well. At this point we can go ahead and put the dissolve kit on and actually clean the evaporator coil. You could see that it does definitely have some algae and growth on it. So we'll clean that in place so right now we're going to mix our cleaner and then bring out the components outside and actually clean, the blower wheel, the whole cabinet, the filters and the louvers and veins once those are clean, we'll set them out.
Let them kind of dry come in here, use the dissolve kit and actually clean the rest of this portion. Here when I clean the inside here, I'm going to put this back in place and actually hook up the shop back on the outside that way. As I'm cleaning it we're getting all that cleaner going through our drain pan and getting sucked out so here's our water level here, like I said, I'm gon na, do it 50/50, so we're I'm just under a gallon, so we're going to gallon and a half. So here you can kind of get a better look at the actual blower wheel on some of the dirt buildup in there all right. So then we have our housing, vanes and blower wheel. So we'll start with the blower wheel, we're just gon na spray that one down with a little bit of cleaner, sit for a little bit and then we'll spray down the veins and the housing as well. So you got a little bit of build up there's this! Never gets terrible, but you get a little bit of build up in here, that's normal! So then, that one's clean I'll see growth in here I have to straighten it down with cleaner and just getting it off, get perfectly clean like new again so this one's before you get that you know County have that dirt and stuff in there. Okay.
So now we have all that work really clean. I like to leave the blower wheel actually sitting the longest with the cleaner on it. It really helps break it up just a little bit more. You know it's only been a couple minutes to three minutes whatever it may be.
So while this is drying we'll finish, cleaning the blower wheel, so my favorite thing to do as far as cleaning because is actually spray it like this. Just like you would with a paint roller and you can see all the debris coming out here on the ground. You got all this debris here, that's it so now you can see perfectly clean, there's an amazing job. So here you have the piece the slide behind the unit, this slides up behind the unit on the top as a support, so pretty straightforward this one.
You want to start by just putting it right there in the middle this one here you got here and then you see this kind of slides behind the unit boom and on this side same thing, slides behind the unit. At that point, you want to tighten up these red strings and then also tighten up this one, which is going to support this from pulling apart. So this one's a little loose. So then you just pull this down slide it.
It's got a little adjustable pieces. There same thing with this one: just pull it up, tighten it, and you have this one here now. This is keeping it in these two red ones. Keep it up, then you're gon na take this piece here.
It's got a little clip. That's gon na hook up to your metal support up top. Okay, that's! What's gon na keep this upward catching all the water, so you get that whatever supporting factor you want there we go and there's your frame. So what did that? Take 35 seconds 40 seconds? It's really not too bad all right and we're gon na get our design back.
So then you'll take this wedge. What that does, is you can take this plastic and actually take it with this and wedge underneath in behind the unit, depending on how tightly that mounting brackets on there, it's gon na okay and your let's bring this part now into the bucket. So a good portion of this is actually running through the drain: pan. Okay, so at this point I'll just a little bit more and then we'll fill this pump sprayer up with water to completely rinse the whole evaporator coil of any cleaners that it may have, and you get any finer dust and dirt that we didn't get out out. But I'm gon na, let that sit and kind of clean the coils for a while should be good there and shut that off. So here we're just doing the final rinse down come through a couple jugs here all right. So now we can just take the bib off stow it in the bucket and should be good to go and off the last couple trips here. So we have all of our cleaning materials, so we're gon na just go ahead and put everything back together.
First, we're gon na start with the actual blower wheel, we're gon na stick that back in we got the bearing on the end there you're gon na. Even this out make sure you get it down on the right section all right. So we completed the preventative maintenance. Use the dissolve cleaning kit and now we're just testing the system operation confirming everything's correct, so we don't want to use gauges on this system.
The amount of refrigerant that they hold is such a you know. A couple ounces is going to affect the operation of it. So we know we have everything dialed in from when the system was originally installed. So what we're gon na do is we're gon na use our 6:05 eyes factor and look at the spec sheet factor in the cubic feet for a minute that we're moving, which, on this particular one and the high-speed, is gon na be 420, so we're at 420 Cubic feet per minute and we're gon na use, our 605 is on the return side and the supply side and get delivered capacity and that'll just give us confirmation that we're delivering the appropriate amount of BTUs those really basic, I'm gon na take these we're gon na Put one here in the supply and then just right here on the top on the return side, so we're gon na leave it there for about 5-10 minutes.
Let the system run and then look at look at the readings confirmed. We have the proper cooling power for this particular unit, but really simple, my favorite way of checking it. You know you don't even have to hook up the ages to it. You know it's functioning.
All right, cleaned out now put our cleaner on the other bib. That comes with it and the racket and everything back in it good to go that old, old bib, we'll just throw that out and not have to worry about cleaning it out and thinking all right. So we got our bracket for the bib bucket, then comes with a secondary bib, we'll use that on the next one. So, on the outside we're going to get the line temperature of the section line, as well as the expansion line, so on the ductless systems, you'll notice, you only have to one hookup again.
You know we're not wanting to hook up gauges, because this thing total charge is two pounds: nine ounces and that per additional five feet is one point: six, two ounces. So what we'll do is check our suction line. Temperature, with your suction line, is going to be the larger one which is going to be the bottom one and then the smaller one. A lot of people get that confused as a liquid line, but that's actually going to be your expansion line. If you didn't have the 6:05 eyes and you really needed to check your suction pressure and superheat, even though that's not an accurate way of actually checking the charge on it, but if you were to use anything to actually look at the pressure, I would recommend you Know something like this: this is the 549 eye. That way, you don't have any loss of charge and the actual hoses, and it can just hook up right here and you don't have to be too concerned about losing refrigerant. But again, if you have the test of 6:05 s, you can get delivered capacity and you don't even have to worry about that. So right now we know we're delivering the appropriate amount of cooling capacity.
We already checked our expansion line temperature, our suction line temperature. I just doesn't get it kind of amp draws on the entire system, then the ant draws on the interior system as well. So the indoor unit is pulling point two amps, the entire system, the outdoor unit, including the indoor unit, which is pulling the point two amps is pulling two point: five, nine amps. These are incredibly efficient units all right.
We have the whole outdoor unit cleaned up again. We didn't have to hook up to the refrigerant circuit, to know that everything is working properly button it up, set it back up to the desired temperature and we'll be good to go. Last thing we want to do is confirm proper drainage, yeah, nice, steady, drip, that's good. Hopefully that was helpful.
I was a lot of fun digging through it. You know pulling it cleaning the blower wheel, checking the delivered capacity with the test. Oh 6:05 eyes after looking at the specs and you know, cubic feet delivered and also using that dissolve kit being able to clean that evaporator coil in place and really eliminate any dirt and debris that it's stuck in that coil with minimal mess. You don't have to worry about the walls getting soaked.
You know the dresser below we always are gon na use drop plugs. That's that's the best practice, but I think it was a good success. Thanks guys catch you next time.
Not a 100% cleaning process, dirt still there inside the evap fins and at the back secondary drain.
It is cheating way of cleaning, i say so because i am technician… Service area Orleans??
Better video than most thank you! It would have been better if you camera man wasn't a room away shooting the video! Personally move the furniture out from under the equipment and cancel the elevator music!
Oh, wow! You guys clean the wheel every single visit? Must be a decent chunk of change for all that labor.
I didn’t know Casey Frey did HVaC 😂
I would love a more hands on learning doing this because the speed of the film video was too quick and I learn better by actually doing it. What do they usually get for this type of maintenance charge per unit head? Are the brands all pretty much the same technique? You make it look so easy, Brian is lucky to have such good techs.
Man I know that was hard to explain while working that hard! Great job tho and it is appreciated!
Why not clean the blower wheel in place on the indoor unit?
Why didn't you move the dresser so you can be closer to your work? you should never….. never never never put your feet on ANY Furniture.
Such an awesome job inside, balanced against an absolute crap job cleaning the condenser.
This is for HVAC School, have you ran into any mini-splits where you can’t take blower wheel off? Because I ran into a Fujitsu the other day and I couldn’t figure out how to take that wheel off.
Did you clean the out door condensor coil ? Is that required on these units or did you see it was clean already. Thanks for very informative video. This was not covered on my HVAC course at all.
Why is the smaller liquid line actually the expansion line ?? Please explain this. Thanks Service area Ottawa??
Too much time and work when you have 6 more maintenances to do in 1 day but this is the right way to do it….
Thanks for this vid, it's nicely done. I'm retired hvac tech (residential 1970's-1980's, commercial/industrial 1980's-2018). Installed my first Sanyo mini-split in 1985 in an medical office and haven't worked on many since. Now I'm installing them in my home and I see they have changed (A LOT!). Not too proud to say I need some refresher schooling on these but I'm having trouble finding any place to get that. To make it worse, I bought and installed a DuctlessAire 2 ton HP from Home Depot and it has worked great for 2 years but I'm now seeing a noticeable decrease in cooling capacity. Home Depot refused to give me a warranty at the time of purchase because I'm no longer with a contractor (they told me that after the purchase). DuctlessAire refuses to give technical support for the same reason. Really pisses me off because after almost 50 years of working in the field, I've forgotten more than most of them ever knew. Nevertheless, this is life, so I'm looking for any tips on servicing or schooling I can get. You can teach an old dog new tricks. Service area Nepean??
How often would this need to be done? I know reusable filter can be often, but how often would you need to use the desolv kit?
I had my unit cleaned this way, but now i get these white flakes when i use the unit. What is that?
Excellent and Professional 👏💯 Thank you
I cleaned a 12 year old Fujitsu that had never been cleaned. The video is too disgusting for YouTube! The blower wheel and the channel it's in had the look of a black asphalt roof shingle before cleaning.
Got to move that stinking dresser man in the way. Nobody wants to move stuff out of your way
Using a Client's furniture as a work surface is A Big No No! This service tech would have been asked to stop work and leave!
I got very dizzy watching this video.
Where can I buy that spray kit?
What would it cost a customer to get this service done?
I liked the fact you went in deeper.
I was disappointed that you skipped filming for removal of fan and access to coil rear/under.
Showing yourself flipping electrical switches was totally unnecessary. Please would you mind showing how you remove the fan.. perhaps get your little assistant to film while you get deeper than the filters.
Good idea but lack of filming where it differs from the others brings the rating down.. persevere
What would you say about moldy smell coming from the system? Are you in Nepean ?
Greatest cleaning video ever! A million thanks. No pointless intro, no meaningless blabbering.
Where do you guy the cleaning unit from?
Gee all this is soo unnecessary on a domestic system.
Thanks for your nice video.
It is nicer and more effective to do more with lighting and camera man for your next video or remaking this one.sometimes is you blocking all important details that can help lot of people that you try to reach. Or camera does not zoom in to show how you unlock or remove parts.all we can see your hands moving or tools get close to the unit.placing the camera and use it accordingly can help a lot of beginners in this field.
NICE!!!! how much would this cost in this exact mini split application?
Great job. Thanks for the video. Love this company. All employees are amazing.
I seriously hate minisplits. You got a really easy access to this one but I've seen ones that are in the most god forsaken spots possible that make just getting to the indoor a huge safety concern. Literally some are above staircases 12 ft in the air where hooking this cleaning kit would be a pain in the ass and on some you HAVE to remove the coil to get to the blower! Wth!
Thorough inside cleaning. But my mini has fine fins on the outside coils that a brief hose spray will do nothing for. That job is only half done.
Any thoughts on how much of that cleaner you use per System?
The constant banging during the video sucks !!! Service area Barrhaven??
I cleaned mine for the first time since it was installed two years ago. My blower wheel had caked on crud! It's not that bad a job.. actually hardest part was getting the cover off. Those clips are tough! Are you in Barrhaven ?
that was a very professional service. I dont have alot of experience with minisplits and I would like to learn to service them better. your video was very helpful thank you very much
Seems like a lot of work when the evaporator spray will do just as good without the haste of that bib.
Nu-Calgon 4171-75 Evap Foam No Rinse Evaporator Coil Cleaner, 18 oz.
Thx for the informative video! Eventually I'll have a Daikin 3 zone ductless and will be servicing them myself. Very helpful!
I Hope you charge at least $600 for this. A lot of movements.
What if you removed the screw holding the blower wheel in place but it still wont come out?…Do you have an idea why? Are you in Kanata ?
This has helped me alot, thank you. Are you in Orleans ?
Great video. I’ll just do it myself now and save some money.
Very professional clean and tidy,love it