Hey thanks for watching this video is demonstrating how to clean barred and marv air wall hung units and those are just brand names. I'm sure there are some other brand names of wall mounted units, but those two are quite common and you see them in applications like schools, telecom, shelters anywhere that you have portable type buildings. They mount on the outside they're very Hardy pieces of equipment, but they do tend to get dirty quite often and I'm not 100 % sure why it is. I think it's mostly because they have smaller coil surface area, it's a flat panel coil and they have pretty high air velocities.

So what we find is that they get dirty pretty quick. They require a decent amount of maintenance, especially on the condenser coil. We think that the venom packs from refrigeration technologies are a great fit for cleaning these units, one because the venom packs are very small, so people who are doing a lot of cleanings you can keep a lot more cleaner, it's very concentrated, and so one packet of The venom packs is gon na do multiple gallons of normal, cleaner, also, it's very safe. So when you're gon na be cleaning coils a lot, you want to make sure that it's going to be safe for the workers say for any occupants and also that it's not going to damage any of the coatings on coils, you'll notice, sort of this reddish gold.

Phenolic looking coating on this particular condenser coil, it helps make sure that you're not going to strip anything off another thing that makes it really nice is it gives you a lot of flexibility in what you use. You can see. Some technicians prefer to use a spray bottle. Spray bottle works great with the venom packs, because the little fill nozzle on the venom packs fit fits nicely into a spray bottle.

The tips for cleaning these well, a couple things to consider one is: is that the air comes in the side and then is discharged out that main surface of that coil that you see so the big flat surface, you're looking at the air, is actually coming. The opposite direction: it is helpful to pull apart, so you can clean both sides, but one advantage is that you can actually wash these from the outside in again very important that you use very mild cleaners because, as you're washing outside in you're gon na get a Lot of that onto the compressor, we do recommend that you pull the fan off, as shown here good afternoon. We're gon na do some coil cleaning. I've got my barred unit, pre disassembled gold, the fan shroud out and, as you can see, that gives me access to the back of the coil and the one thing I like to do is put these clip connects on both ends.

Just so, I'm not having to wire that up every single time we do disassembly. Quite often we go ahead and mix up the cleaner, I've gone ahead and add the cleaner first. That way is it's getting filled up it kind of mixes it in there already yeah. I like how we use Spade connectors that way, it makes it easier to service and remove it more readily, not that you necessarily have to do that every single time.

In some cases, even water might be appropriate. But if you are going to use cleaners - and you want to get in there to that back side - that's gon na be helpful. Now again, keep in mind that that air comes in the side and then it's discharged out the main surface of that coil. So if you're gon na backwash, you can backwash from that main face, also allow dwell time with these cleaners when you spray the cleaner on, allow it to sit and dwell again depending on what cleaner you use and how strong you mix it based on the instructions Of course, you may or may not get a lot of foaming action, but either way you want to allow the cleaner to work on that soil before you rinse it on these, especially because they do tend to have a little smaller coil surface area.

With that flat panel, even a slight amount of dirt can impact their efficiency, and if you read the service manuals for this equipment, it focuses on the importance of cleaning number one. Changing air filters number two cleaning, condenser coils, you can use the evap cleaner and get in and wash that evaporator coil. But just do it very carefully to make sure that you don't have spillage into the electrical components. Generally speaking, a soft bristle brush along with some of the evap cleaner from refrigeration technologies, is gon na, be a really good fit for washing those evaporator coils.

If you need to so that's it when you're cleaning, barred and marv air wall-hung units use very mild cleaners. Make sure that you're, using a good amount of water flow to do the rinsing, make sure to get them fully rinsed and it's your best bet to periodically pull them apart. So that way, you can make sure that you clean both sides of that coil. Keeping in mind the direction of airflow hope, you found that helpful to find out more about the venom packs from refrigeration technologies.

Go to refrig tech comm, if they're not carrying them at your local supply house. Yet talk to your territory, manager about bringing in venom packs. Thanks for watching.