/ News & Press / Video / Preventing Corrosion on Aluminum Evaporators
Preventing Corrosion on Aluminum Evaporators
WEBVTT Kind: captions Language: en
00:00:00.060 we have a six-year-old goodman with 00:00:03.67900:00:03.689 aluminum evaporator and it has a leak is 00:00:07.78900:00:07.799 the first aluminum evaporator leak I've 00:00:11.62900:00:11.639 seen and I wanted to show why it's 00:00:14.83900:00:14.849 leaking it has to do with the waterline 00:00:19.49000:00:19.500 which is about a half inch up and then 00:00:24.05000:00:24.060 the aluminum tube being underwater now 00:00:28.04000:00:28.050 this one wasn't leaking on this side but 00:00:30.01900:00:30.029 you can see some pretty serious 00:00:32.47000:00:32.480 corrosion going on there how the leaking 00:00:37.19000:00:37.200 tube is right on the bottom in the back 00:00:39.50000:00:39.510 there 00:00:42.40000:00:42.410 it's almost disintegrated you can see it 00:00:58.56900:00:58.579 you see it right there 00:01:02.02000:01:02.030 bobaloo Goodman was one of the first 00:01:09.13000:01:09.140 aluminum evaporators and so they've had 00:01:13.78900:01:13.799 the aluminum below the waterline I wind 00:01:16.58000:01:16.590 looked at a bunch of other units carrier 00:01:20.74000:01:20.750 mounts their coils above the waterline 00:01:24.34000:01:24.350 train you can see right there they're 00:01:27.89000:01:27.900 above the waterline all style notice 00:01:33.77000:01:33.780 they did don't populate the tubes so 00:01:36.85900:01:36.869 that it stays above the waterline ream 00:01:41.56000:01:41.570 above the waterline notice the expansion 00:01:44.89900:01:44.909 valve is below the waterline that's 00:01:47.45000:01:47.460 going to corrode out so if you ever saw 00:01:49.99900:01:50.009 that you want to grab that and just lift 00:01:51.95000:01:51.960 it up above that water is corrosive so 00:01:58.24000:01:58.250 the Goodman didn't the replacement coil 00:02:02.45000:02:02.460 they didn't update it so I'm going to 00:02:05.33000:02:05.340 show how to manually raise it above the 00:02:07.78900:02:07.799 waterline by adding some sheet metal 00:02:09.80000:02:09.810 below they are caught 00:02:13.23000:02:13.240 now since I'm raising the coil up an 00:02:16.12000:02:16.130 inch I need to close it in 3/4 of an 00:02:20.50000:02:20.510 inch so that is not too wide at the 00:02:23.98000:02:23.990 bottom and that's why I'm going to cut 00:02:28.33000:02:28.340 this back with my nifty cutters here 00:02:42.61000:02:42.620 we want to be careful don't have your 00:02:45.05000:02:45.060 steel cut your aluminum anywhere now 00:02:49.91000:02:49.920 since I'm raising the coil 1 inch up I'm 00:02:53.21000:02:53.220 going to make a channel which is 2 and 00:02:56.42000:02:56.430 1/4 wide which is the coil and then to 1 00:02:59.30000:02:59.310 inch lip I'll cut that out and fold it 00:03:05.86000:03:05.870 so there you go 00:03:08.17000:03:08.180 Zuma coil is going to stay high and dry 00:03:12.61000:03:12.620 now you can get some blow-by remember to 00:03:16.72900:03:16.739 lower pressure on the outside of the 00:03:19.43000:03:19.440 coil here so it's going to want to kick 00:03:22.00900:03:22.019 water splashing out like maybe want to 00:03:29.09000:03:29.100 splash that way so all you got to do for 00:03:32.57000:03:32.580 your blow by just put some little wall 00:03:35.80000:03:35.810 let's just throw some pieces of sheet 00:03:38.33000:03:38.340 metal in there don't have it rub on your 00:03:41.21000:03:41.220 aluminum pipe it's fine to touch your 00:03:43.81900:03:43.829 aluminum fins because they have a lot 00:03:46.31000:03:46.320 more distance for corrosion so I noticed 00:03:50.81000:03:50.820 one other thing just for good measure 00:03:54.64000:03:54.650 we got aluminum really close to the 00:03:58.78900:03:58.799 galvanized metal on the bottom row I 00:04:02.50000:04:02.510 just put a few layers of line set tape 00:04:05.80000:04:05.810 on the channel and so we're going to 00:04:10.10000:04:10.110 have no aluminum touching 00:04:12.52000:04:12.530 galvanized anywhere where it's important 00:04:16.65900:04:16.669 so there you have it took about an hour 00:04:19.64000:04:19.650 but it's also making a video and that 00:04:24.35000:04:24.360 does not speed getting the fit these 00:04:27.95000:04:27.960 will catch a blow by drop on my back 00:04:30.46900:04:30.479 into the pan don't worry you Nova's a 00:04:34.21900:04:34.229 splashing here's the coil mounted in the 00:04:37.70000:04:37.710 unit so you can see not going to corrode 00:04:42.50000:04:42.510 anymore yeah I wanted to show Goodman 00:04:46.43000:04:46.440 redesign their condensate pan that is on 00:04:50.24000:04:50.250 their newer hair handler unit 00:04:52.34000:04:52.350 and though the pan is totally has 00:04:55.94000:04:55.950 aluminium totally out of the water on 00:04:59.84000:04:59.850 both sides high and dry that's the way 00:05:08.60000:05:08.610 to do it even if you mouth horizontal 00:05:10.54000:05:10.550 the aluminum is not going to be in 00:05:12.80000:05:12.810 standing water so they figured that out 00:05:15.50000:05:15.510 pretty fast that you want to keep that 00:05:18.38000:05:18.390 aluminum out of the water I do like 00:05:21.32000:05:21.330 these coils nice and shiny I hope you 00:05:28.19000:05:28.200 liked watching the video thanks for 00:05:29.57000:05:29.580 watching
Office location
Engineering company LOTUS®
Russia, Ekaterinburg, Lunacharskogo street, 240/12