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Top 10 Circulator Pump Problems Found on Boilers!
WEBVTT Kind: captions Language: en
00:00:01.579 hey guys this is Craig me who I trade 00:00:03.37000:00:03.380 with EC silverstack and today we're 00:00:04.99000:00:05.000 going over are the top ten problems that 00:00:06.70000:00:06.710 occur with circulating pumps used for 00:00:08.70900:00:08.719 boilers problem number one is if you 00:00:10.95900:00:10.969 have air in the lines and it's actually 00:00:12.87900:00:12.889 not the fault of the circulating pump so 00:00:15.22000:00:15.230 the circulating pump could be running 00:00:16.68900:00:16.699 just like this so I don't know if you 00:00:19.45000:00:19.460 can hear that that noise right there you 00:00:21.22000:00:21.230 could actually put a stethoscope on the 00:00:22.90000:00:22.910 end of this or you can listen in with a 00:00:24.94000:00:24.950 screwdriver to allow transmission of 00:00:28.48000:00:28.490 that noise across the screwdriver over 00:00:30.64000:00:30.650 to your ear you would definitely not 00:00:32.58900:00:32.599 want to use a screw driver or anything 00:00:33.79000:00:33.800 like that if there is exposed parts that 00:00:36.46000:00:36.470 we're turning but everything's 00:00:37.45000:00:37.460 internally moving inside this pump right 00:00:39.67000:00:39.680 now and you can tell that the that the 00:00:42.04000:00:42.050 circulator pump is running where at 00:00:44.50000:00:44.510 least that the motor is running so then 00:00:47.11000:00:47.120 comes the problem of having to purge the 00:00:49.21000:00:49.220 air into the lines so in order to get 00:00:51.40000:00:51.410 the air out of the lines most boilers 00:00:53.47000:00:53.480 are going to have an automatic air bleed 00:00:55.18000:00:55.190 so such as this so as long as this calf 00:00:57.54900:00:57.559 is loose it's gonna automatically get 00:00:59.47000:00:59.480 the air out of the system if you find 00:01:01.66000:01:01.670 that this cap is tight on the boiler 00:01:03.45900:01:03.469 there may be a reason for that and that 00:01:04.84000:01:04.850 may be because the the valve at the top 00:01:07.05900:01:07.069 right here may be leaking water out 00:01:08.91900:01:08.929 instead of just purging the air and then 00:01:10.80900:01:10.819 stopping so in that case you may have to 00:01:13.41900:01:13.429 replace the the valve core in the inside 00:01:16.17900:01:16.189 here or go ahead and replace the 00:01:18.60900:01:18.619 automatic air bleed some are not fitted 00:01:20.98000:01:20.990 with a valve core and they just have a a 00:01:22.77900:01:22.789 piece of rubber that blocks the port but 00:01:25.20900:01:25.219 basically just valve that off take the 00:01:26.70900:01:26.719 pressure off and then you go ahead and 00:01:28.17900:01:28.189 replace this you could also have a venti 00:01:30.09900:01:30.109 that's inside the baseboard and 00:01:31.62900:01:31.639 basically at the top here you'd have 00:01:33.42900:01:33.439 either a Schrader valve or you'd have a 00:01:35.41000:01:35.420 key valve and when you what you do is 00:01:38.13900:01:38.149 you loosen that up if it's a key valve 00:01:39.99900:01:40.009 and it lets air out and water until you 00:01:42.96900:01:42.979 get a steady stream of water coming out 00:01:45.01000:01:45.020 then you go ahead and tighten it back up 00:01:46.08900:01:46.099 or it could just have a Schrader valve 00:01:48.39900:01:48.409 in it so so that's something that you 00:01:50.55900:01:50.569 could use to get the air out of the the 00:01:52.56900:01:52.579 lines up at the high points of the 00:01:54.60900:01:54.619 baseboard radiators you could also use 00:01:56.67900:01:56.689 your boiler drains say you have a boiler 00:01:58.95900:01:58.969 drain on the supply side in the boiler 00:02:01.26900:02:01.279 drain on the return side and say maybe 00:02:03.27900:02:03.289 have tsums 00:02:04.20900:02:04.219 what you can do is you can open up one 00:02:06.39900:02:06.409 hook it to a hose and then attach this 00:02:08.58900:02:08.599 to your cold water and you can force 00:02:10.78000:02:10.790 cold water through with the other boiler 00:02:13.24000:02:13.250 drain open and then base 00:02:15.04000:02:15.050 we are going to allow air coming out and 00:02:17.23000:02:17.240 you're going to allow the water coming 00:02:18.49000:02:18.500 out until the gurgling of water mixed 00:02:21.46000:02:21.470 with air stops so you just have a steady 00:02:23.05000:02:23.060 stream of water so you do that for each 00:02:25.45000:02:25.460 zone until you have all the air out of 00:02:27.88000:02:27.890 the lines you want to make sure that you 00:02:29.08000:02:29.090 don't exceed the max pressure while 00:02:30.85000:02:30.860 you're doing that on the system because 00:02:32.17000:02:32.180 you don't want the pressure at least to 00:02:33.43000:02:33.440 blow the other thing that you could do 00:02:34.93000:02:34.940 is if you have a boiler drain on the 00:02:36.61000:02:36.620 opposite side as the where the cold 00:02:39.37000:02:39.380 water feeds in you have this backflow 00:02:41.32000:02:41.330 preventor and pressure reducing valve 00:02:42.88000:02:42.890 you can just allow this to push the 00:02:44.59000:02:44.600 water in and then vent the air out of 00:02:46.93000:02:46.940 the other side with your boiler drain 00:02:48.13000:02:48.140 until you have a steady stream of water 00:02:49.41000:02:49.420 when you're done purging the air out of 00:02:51.43000:02:51.440 lines you want to make sure that you're 00:02:52.57000:02:52.580 back down to 12 to 15 psi G with a cold 00:02:56.50000:02:56.510 working pressure on that boiler when the 00:02:58.81000:02:58.820 boiler is hot it's probably gonna be 00:03:00.13000:03:00.140 around 18 to 22 psi G so this pressure 00:03:03.82000:03:03.830 reducing valve is what allows water to 00:03:06.52000:03:06.530 feed into the system to keep it at a 00:03:08.92000:03:08.930 steady cold water temperature of 12 to 00:03:11.77000:03:11.780 15 psi G Robin number two could be if 00:03:14.62000:03:14.630 you have some type of a blockage in the 00:03:16.45000:03:16.460 system and it's not allowing the water 00:03:18.37000:03:18.380 to flow freely so that could be a manual 00:03:21.76000:03:21.770 valve such as one of these right here it 00:03:24.25000:03:24.260 could be an automatic electrical valve 00:03:26.65000:03:26.660 or it could be something like this and 00:03:28.66000:03:28.670 this is a mixing valve and on the sides 00:03:30.91000:03:30.920 of some mixing valves you're gonna have 00:03:33.16000:03:33.170 a screen inside and that can end up 00:03:35.29000:03:35.300 getting clogged up so this is a washer 00:03:38.19900:03:38.209 with a screen a lot of newer ones don't 00:03:40.36000:03:40.370 have those but some do and so that can 00:03:43.27000:03:43.280 end up clogging up problem number three 00:03:46.03000:03:46.040 is if the motor is stuck and it's just 00:03:48.40000:03:48.410 not turning the impeller inside so this 00:03:50.80000:03:50.810 is probably one of the most common 00:03:52.30000:03:52.310 issues is when the bearings end up 00:03:54.16000:03:54.170 seizing up inside the system so this 00:03:56.68000:03:56.690 circular pump are going to take an amp 00:03:58.00000:03:58.010 draw and this one is working and then 00:04:00.49000:04:00.500 we're going to take a AM throw on 00:04:01.78000:04:01.790 another one that is not working so we 00:04:03.97000:04:03.980 have our ECM clamp clamped around one 00:04:06.25000:04:06.260 wire and it's reading 0.65 and also 00:04:09.67000:04:09.680 realizing that there's no load in here 00:04:11.25900:04:11.269 right now as far as the water goes this 00:04:14.86000:04:14.870 pump right here on the rating plate 00:04:17.34900:04:17.359 states 0.71 amps so this motor right 00:04:21.28000:04:21.290 here is stuck in is not turning the 00:04:22.99000:04:23.000 impeller will not turn and unfortunately 00:04:25.93000:04:25.940 there's no access in order to try to 00:04:27.67000:04:27.680 help it turn 00:04:28.66000:04:28.670 but that also means that the bearings 00:04:30.19000:04:30.200 are very seized up inside and they're 00:04:33.22000:04:33.230 just stuck in place so let's go ahead 00:04:35.26000:04:35.270 and take an amp draw and you can see 00:04:36.94000:04:36.950 that this amp draw is right about twice 00:04:40.09000:04:40.100 as much as this one was running it it's 00:04:42.94000:04:42.950 actually a little bit over that but it's 00:04:44.53000:04:44.540 at one point three five amps right there 00:04:46.69000:04:46.700 so you can actually hear the difference 00:04:48.58000:04:48.590 between a running pump such as this one 00:04:50.62000:04:50.630 right here and a non running pump so 00:04:53.23000:04:53.240 there is no water sloshing there's no 00:04:55.33000:04:55.340 noise at all other than just a humming 00:04:57.88000:04:57.890 noise because the windings are basically 00:05:00.49000:05:00.500 overheating and it's not working 00:05:03.76000:05:03.770 properly the rotor is not turning in 00:05:06.52000:05:06.530 reference to the crew and foss bumps you 00:05:08.23000:05:08.240 could use either a very wide screwdriver 00:05:10.30000:05:10.310 or you could use a quarter I like to use 00:05:12.46000:05:12.470 a pair of vise grips and then you can go 00:05:13.99000:05:14.000 ahead and turn it like that or you could 00:05:15.49000:05:15.500 also use the screwdriver with the vise 00:05:18.04000:05:18.050 grips just in order to press downwards 00:05:19.81000:05:19.820 and then you can go ahead and turn it 00:05:21.28000:05:21.290 like that but you don't want to use a 00:05:22.99000:05:23.000 thin screwdriver because you're going to 00:05:25.18000:05:25.190 end up marking up or bending this the 00:05:28.54000:05:28.550 screw right here and possibly damaging 00:05:30.79000:05:30.800 it and then not being able to turn it as 00:05:32.32000:05:32.330 you can see somebody has already done 00:05:33.67000:05:33.680 that on this screw so you can see in the 00:05:44.32000:05:44.330 end right here and you can actually get 00:05:45.94000:05:45.950 to the end of the rotor in order to see 00:05:48.01000:05:48.020 if it's going to turn or not so if it's 00:05:50.20000:05:50.210 if it's real hard or something like that 00:05:52.03000:05:52.040 and it's not turning very well that 00:05:54.34000:05:54.350 could be an issue right there or if it's 00:05:56.38000:05:56.390 just not turning it all and it's 00:05:57.40000:05:57.410 completely stuck so this right here you 00:06:01.27000:06:01.280 can get to from the end and also if you 00:06:03.70000:06:03.710 took these four bolts off you can get to 00:06:05.89000:06:05.900 the full rotor assembly in order to be 00:06:07.84000:06:07.850 able to turn them so you gonna notice a 00:06:09.67000:06:09.680 rubber o-ring right here and that is 00:06:11.95000:06:11.960 actually holding the water in there 00:06:13.45000:06:13.460 because water does come into there in 00:06:15.76000:06:15.770 order to help the sleeve bearings 00:06:18.13000:06:18.140 operate so you want to be aware of that 00:06:20.68000:06:20.690 before opening this up now show you what 00:06:24.19000:06:24.200 this one looks like in a second because 00:06:26.05000:06:26.060 what we'll do is we'll unscrew these 00:06:28.51000:06:28.520 four bolts right here and we'll be able 00:06:31.06000:06:31.070 to take this motor right off of here and 00:06:33.73000:06:33.740 we'll be able to check the impeller on 00:06:36.49000:06:36.500 this right here 00:06:38.32000:06:38.330 you should have valve somewhere as close 00:06:40.33000:06:40.340 to the circulating pump if you need to 00:06:42.13000:06:42.140 replace 00:06:42.70000:06:42.710 the motor instead of the actual pump 00:06:46.48000:06:46.490 housing but on these water will come out 00:06:49.99000:06:50.000 when you go to replace that motor right 00:06:51.93900:06:51.949 there so you want to go ahead and valve 00:06:53.62000:06:53.630 off on both sides so go ahead and 00:06:56.62000:06:56.630 unscrew these they're not going to be 00:07:00.43000:07:00.440 that that tight so you should be able to 00:07:02.05000:07:02.060 get them loose fairly easily you have to 00:07:07.93000:07:07.940 unscrew them all the way out I'm just 00:07:09.31000:07:09.320 breaking them loose right now 00:07:17.84000:07:17.850 now this just fell apart but just one 00:07:20.85000:07:20.860 tap with a flathead screwdriver and this 00:07:22.74000:07:22.750 should come apart and as you can see 00:07:25.26000:07:25.270 right here we have our impeller and it 00:07:27.42000:07:27.430 is not turning at all okay so it's it's 00:07:32.10000:07:32.110 frozen solid 00:07:33.21000:07:33.220 so that's your bearings and your sleeve 00:07:35.85000:07:35.860 right there or holding on to that axle 00:07:40.73000:07:40.740 here's another one right here and you 00:07:42.84000:07:42.850 can see that this one spins freely so if 00:07:47.73000:07:47.740 you have the circulating pump out such 00:07:49.74000:07:49.750 as this right here you can just go ahead 00:07:52.17000:07:52.180 and take a screwdriver in there and see 00:07:54.06000:07:54.070 if you can push on the empower and see 00:07:56.70000:07:56.710 if you can get it to spin so as you can 00:07:58.71000:07:58.720 see it's fairly easy to replace a 00:08:00.09000:08:00.100 circulating pump motor off of a 00:08:02.46000:08:02.470 circulating pump flange such as this so 00:08:05.13000:08:05.140 what you want to do is you want to go 00:08:06.51000:08:06.520 ahead and valve off before and after the 00:08:08.82000:08:08.830 circulating pump and then under your 00:08:10.65000:08:10.660 four bolts you pull this off and you 00:08:12.66000:08:12.670 want to replace this little o-ring right 00:08:15.18000:08:15.190 here then you bolt your new one on and 00:08:17.01000:08:17.020 then you got to turn your electrical 00:08:18.50000:08:18.510 power off and replace your electrical 00:08:21.51000:08:21.520 wiring and then you're ready to go and 00:08:23.28000:08:23.290 then you can go ahead and turn the 00:08:24.06000:08:24.070 system back on again so after you 00:08:25.95000:08:25.960 replaced the motor if you get your water 00:08:27.96000:08:27.970 level all the way up to here then all 00:08:30.57000:08:30.580 you have to do is purge this amount of 00:08:32.07000:08:32.080 air out versus this amount of air that 00:08:34.92000:08:34.930 would be a lot harder so it just depends 00:08:37.50000:08:37.510 on where your air bleeds are at in the 00:08:40.05000:08:40.060 system as far as how hard it is to get 00:08:42.45000:08:42.460 your air out now you could have a larger 00:08:45.09000:08:45.100 circulating pump such as this and you 00:08:47.37000:08:47.380 have bearings multiple bearings that you 00:08:48.93000:08:48.940 need to wheel on this twice a season so 00:08:51.30000:08:51.310 right here is an oil port here's an oil 00:08:53.34000:08:53.350 port and here's an oil port and either 00:08:56.25000:08:56.260 the motor could go bad or you could be 00:08:59.04000:08:59.050 over here in this assembly where the the 00:09:01.86000:09:01.870 motor attaches to the impeller acts a 00:09:04.47000:09:04.480 lot so any of those bearings could be 00:09:07.20000:09:07.210 the problem but they do have to get 00:09:08.97000:09:08.980 wheeled on on a circulating pump such as 00:09:11.67000:09:11.680 this problem number four can be if you 00:09:14.70000:09:14.710 have something jammed up inside the 00:09:16.59000:09:16.600 impeller area so something could be 00:09:19.11000:09:19.120 breaking loose from inside the system 00:09:21.39000:09:21.400 and in this case you see it is a rubber 00:09:23.31000:09:23.320 o-ring that's stuck in the impeller in 00:09:26.61000:09:26.620 there so that would stop the motor from 00:09:29.31900:09:29.329 turning or stop it from turning as 00:09:31.50900:09:31.519 quickly so that could be an issue 00:09:33.81900:09:33.829 as you can see the impellers are not 00:09:37.09000:09:37.100 tight up against the inside of here so 00:09:40.61900:09:40.629 it really takes something large in order 00:09:43.47900:09:43.489 to stop this from from turning so 00:09:46.05900:09:46.069 there's a lot of free space in there so 00:09:49.60000:09:49.610 this is more of a rarer instance but 00:09:52.35900:09:52.369 it's still something that can happen 00:09:53.72900:09:53.739 problem number five is if you are 00:09:56.07900:09:56.089 leaking water out of the side where the 00:09:58.38900:09:58.399 motor mounts over to the impeller flange 00:10:01.29900:10:01.309 assembly so as you can see right here 00:10:03.91000:10:03.920 there's a rubber o-ring rate along the 00:10:06.30900:10:06.319 inside here sometimes it's set back in 00:10:08.76900:10:08.779 this instance it's right along the edge 00:10:10.72000:10:10.730 and on this one you can see that the 00:10:13.90000:10:13.910 water was leaking outside of it and you 00:10:17.07900:10:17.089 see that this rubber o-ring right here 00:10:19.50900:10:19.519 had fallen off and broke so this can 00:10:22.23900:10:22.249 happen just due to that the each or the 00:10:25.47900:10:25.489 titanosaur or something like that and 00:10:27.66900:10:27.679 you just need to replace the o-ring 00:10:29.97900:10:29.989 itself another thing could be just that 00:10:32.91900:10:32.929 these screws are not tight enough and 00:10:34.86900:10:34.879 that could have been the problem the 00:10:37.98900:10:37.999 same thing on this circulating pump do 00:10:39.60900:10:39.619 you have a gasket right along the inside 00:10:41.65000:10:41.660 here and that could have worn down or 00:10:44.53000:10:44.540 the the bolts may not have been tight 00:10:46.17900:10:46.189 enough so it could be leaking water out 00:10:47.71000:10:47.720 of there you could also have a problem 00:10:50.22900:10:50.239 such as at these gaskets right here and 00:10:52.96000:10:52.970 right here these would be outside of the 00:10:54.54900:10:54.559 pump assembly but what could have 00:10:56.16900:10:56.179 happened is maybe one of these bolts and 00:10:58.56900:10:58.579 that's where tighten down to hard 00:11:00.10000:11:00.110 compared to the other side or maybe this 00:11:01.53900:11:01.549 got squished and cracked over time or 00:11:03.97000:11:03.980 maybe the cast iron cracked and broke 00:11:06.97000:11:06.980 because the the bolts were too tight or 00:11:09.24900:11:09.259 maybe the nut has loosened up over time 00:11:11.49900:11:11.509 so that's a variety of things that that 00:11:13.74900:11:13.759 could allow water to leak out of this 00:11:16.47900:11:16.489 gasket area problem number six could be 00:11:19.11900:11:19.129 that even though your thermostats 00:11:20.59000:11:20.600 calling for heat you may not have power 00:11:23.22900:11:23.239 getting to your circulating pump so you 00:11:25.60000:11:25.610 could have incorrect power or no power 00:11:28.32900:11:28.339 at all to your circulating pump and 00:11:29.85900:11:29.869 that's why you don't have any hot water 00:11:31.35900:11:31.369 so on aqua stat relay such as this these 00:11:34.65900:11:34.669 contacts inside could be pitted so when 00:11:37.98900:11:37.999 this is calling for the circulating pump 00:11:40.74900:11:40.759 to run to circulate your Heat 00:11:43.21000:11:43.220 it's supposed to suck this relay down 00:11:44.77000:11:44.780 and these contacts become pitted and 00:11:46.75000:11:46.760 sometimes you'll have a high resistance 00:11:48.34000:11:48.350 value across them and then you won't 00:11:49.72000:11:49.730 have your power coming in here and going 00:11:53.26000:11:53.270 over to here so this this relay right 00:11:56.11000:11:56.120 here is stopping your hop from 00:11:57.79000:11:57.800 connecting to the hop that comes out of 00:11:59.68000:11:59.690 this aqua Staten goes to your 00:12:02.26000:12:02.270 circulating poem you can also have 00:12:04.90000:12:04.910 something like this and this is a zone 00:12:06.91000:12:06.920 control relay right here and the 00:12:09.58000:12:09.590 circulating pump is powered via this end 00:12:12.28000:12:12.290 switch down here so the switch is 00:12:14.47000:12:14.480 exactly what it is it's it's a switch 00:12:16.57000:12:16.580 it's a normally open switch so that's 00:12:18.76000:12:18.770 the extra end switch and this is the 00:12:20.71000:12:20.720 main end switch so you come into here 00:12:23.53000:12:23.540 with power and you connect it to your 00:12:25.48000:12:25.490 transformer so that this board can be 00:12:27.73000:12:27.740 powered first of all then you have a 00:12:29.77000:12:29.780 power coming out and then going over to 00:12:32.65000:12:32.660 this switch and then coming out of the 00:12:35.50000:12:35.510 switches the hot that goes to your 00:12:37.09000:12:37.100 circulating pump and so this switch will 00:12:39.88000:12:39.890 not close the electrical circuit until 00:12:42.91000:12:42.920 the thermostat calls so you have 24 00:12:46.06000:12:46.070 volts going to a thermostat coming back 00:12:48.40000:12:48.410 to the board right here 00:12:50.98000:12:50.990 sending a call for heat then you have 00:12:53.08000:12:53.090 your zone valve you see 2 to 3 either 00:12:57.04000:12:57.050 has to have continuity or 3 to 4 has to 00:12:59.05000:12:59.060 have continuity in order for this board 00:13:01.87000:13:01.880 to send power there to the circulating 00:13:04.09000:13:04.100 pump that confirms that the zone valve 00:13:07.60000:13:07.610 is mechanically open and the water will 00:13:11.38000:13:11.390 flow if your circulating pump turns on 00:13:13.23000:13:13.240 so you can have an issue with this 00:13:15.79000:13:15.800 you could have an issue with bad 00:13:17.80000:13:17.810 contacts and your aqua stop or just the 00:13:20.35000:13:20.360 aqua stat itself is not sending power 00:13:22.21000:13:22.220 over to your circulating boat but you 00:13:24.79000:13:24.800 can measure for your voltage right here 00:13:26.65000:13:26.660 by turning your multimeter on to voltage 00:13:28.96000:13:28.970 and then you can put one probe in one 00:13:31.75000:13:31.760 wire nut and one on the other one in 00:13:33.16000:13:33.170 order to read if you're reading 120 00:13:35.29000:13:35.300 volts or not problem number seven could 00:13:37.69000:13:37.700 be if the motor electrical windings are 00:13:39.85000:13:39.860 bad so a way to check that is you just 00:13:43.18000:13:43.190 turn the power off you disconnect the 00:13:45.49000:13:45.500 electrical wires and they can check the 00:13:46.87000:13:46.880 resistance value of the electrical motor 00:13:49.60000:13:49.610 windings so right now right now we have 00:13:52.72000:13:52.730 the multimeter set on ohms and we're 00:13:54.82000:13:54.830 reading 42 00:13:55.95000:13:55.960 2.2 ohms of resistance so if we read oh 00:13:59.58000:13:59.590 well like we do right now then that 00:14:01.68000:14:01.690 means that the windings have burnt apart 00:14:03.68000:14:03.690 likewise if we check right over here to 00:14:06.78000:14:06.790 the ground we should have no resistance 00:14:09.03000:14:09.040 whatsoever if we did and that means that 00:14:10.83000:14:10.840 the motor windings have burnt apart and 00:14:13.17000:14:13.180 are touching the the metal ground frame 00:14:17.75000:14:17.760 so you can see that that motor is good 00:14:22.25000:14:22.260 now just because our wire is connected 00:14:26.52000:14:26.530 to the capacitor it's in a buck 00:14:28.29000:14:28.300 connector you don't have to cut that out 00:14:30.12000:14:30.130 in order to check your resistance value 00:14:31.71000:14:31.720 we are checking the true resistance 00:14:34.65000:14:34.660 value right now of 42 ohms it's taking 00:14:37.68000:14:37.690 the path of least resistance that's why 00:14:39.36000:14:39.370 it's not going through that capacitor so 00:14:41.55000:14:41.560 I'll show you that so on this one right 00:14:43.68000:14:43.690 here the buck connector is cut out and 00:14:45.72000:14:45.730 you see that we're still reading roughly 00:14:48.15000:14:48.160 42 ohms of resistance on this one is 00:14:49.89000:14:49.900 reading 41.3 ohms so this motor is good 00:14:53.91000:14:53.920 problem number eight could be a bad 00:14:55.71000:14:55.720 capacitor so what I did to replicate 00:14:58.14000:14:58.150 that as I unwind this from the buck 00:15:00.15000:15:00.160 connector between the black wire the red 00:15:02.31000:15:02.320 wire and the white wire so this is 00:15:04.59000:15:04.600 disconnected and we're gonna go ahead 00:15:06.09000:15:06.100 and put our our multimeter on our hot 00:15:09.54000:15:09.550 wire right here and it's set on amperage 00:15:11.55000:15:11.560 right now and we're gonna go ahead and 00:15:12.75000:15:12.760 turn the power on and see what happens 00:15:14.31000:15:14.320 when you have either a back capacitor 00:15:16.68000:15:16.690 that where the capacitor is not attached 00:15:18.81000:15:18.820 to a PSE motor for a circulating pump so 00:15:23.79000:15:23.800 right now we're reading 1.5 amps and we 00:15:26.73000:15:26.740 do not see the impeller turning so this 00:15:30.15000:15:30.160 is the same ampere treating we read when 00:15:31.77000:15:31.780 the bearings were locked and the 00:15:33.60000:15:33.610 capacitor was good now the power is off 00:15:36.96000:15:36.970 I'm going to go ahead and wire this 00:15:39.36000:15:39.370 black wire right back in 00:15:50.95000:15:50.960 and then we'll go ahead and turn the 00:15:53.21000:15:53.220 power back on and now you see we're only 00:15:57.35000:15:57.360 drawing 0.7 amps and the motor is 00:16:00.08000:16:00.090 running so in order to test the 00:16:06.38000:16:06.390 capacitor you want to shut the power off 00:16:07.85000:16:07.860 and go ahead and disconnect the wires 00:16:10.10000:16:10.110 and then what you do is you cut the buck 00:16:12.74000:16:12.750 connector that was connecting these 00:16:14.78000:16:14.790 three wires cut that out and then you 00:16:17.00000:16:17.010 can go ahead and take your capacitor 00:16:19.07000:16:19.080 wire in order to read the UF reading on 00:16:21.83000:16:21.840 the capacitor you have to short the 00:16:23.63000:16:23.640 capacitor out so you take this wire and 00:16:25.52000:16:25.530 you touch the other end of the wire down 00:16:27.08000:16:27.090 here and once you do that we can go 00:16:31.07000:16:31.080 ahead and read it with our multimeter so 00:16:34.94000:16:34.950 we're going to turn our multimeter on 00:16:37.85000:16:37.860 and we're going to go ahead and hit the 00:16:39.23000:16:39.240 Select until we get to UF so then we 00:16:44.12000:16:44.130 take one probe that has the alligator 00:16:47.90000:16:47.910 clip we'll connect it right on there 00:16:49.39000:16:49.400 make sure it doesn't touch any other 00:16:51.32000:16:51.330 wires and then we'll touch the metal 00:16:53.09000:16:53.100 part where it's connected down there in 00:16:54.91000:16:54.920 order to get our MFD reading so on this 00:16:58.79000:16:58.800 one we're reading 2.01 and on the 00:17:03.26000:17:03.270 capacitor it says it's a 5 UF so the 00:17:06.80000:17:06.810 motor may run but it's not as healthy 00:17:09.26000:17:09.270 for the motor to have this capacitor in 00:17:12.43900:17:12.449 place because this this is definitely 00:17:14.68900:17:14.699 less or actually it's it's more off than 00:17:17.60000:17:17.610 5% so it's it's less than half of what 00:17:21.11000:17:21.120 the rating is now go ahead and short 00:17:23.44900:17:23.459 this one just like we did the other one 00:17:24.77000:17:24.780 so we just go ahead and touch this wire 00:17:26.21000:17:26.220 down in here and then we'll put our 00:17:28.61000:17:28.620 alligator clip on and make sure our 00:17:34.52000:17:34.530 probes are not touching anything other 00:17:35.87000:17:35.880 than the wire and you see that that 00:17:38.48000:17:38.490 one's reading 4.9 2 3 so that one is 00:17:41.48000:17:41.490 good that's within 5% of the reading so 00:17:44.09000:17:44.100 it's the same same reading on this one 00:17:45.77000:17:45.780 says 5 UF plus or minus 5% problem 00:17:51.98000:17:51.990 number 9 could be if the axle is broke 00:17:54.98000:17:54.990 off and so that the motor rotor is not 00:17:57.77000:17:57.780 connected to the impeller 00:18:00.10000:18:00.110 so you know this is the inside rotor 00:18:02.53000:18:02.540 assembly that goes inside the stator and 00:18:05.02000:18:05.030 this is inside of this motor so what 00:18:09.07000:18:09.080 could happen is this could end up 00:18:10.90000:18:10.910 breaking so you see that this should not 00:18:13.09000:18:13.100 be able to turn as this turns these 00:18:16.84000:18:16.850 these stay still and this should turn 00:18:20.20000:18:20.210 just like this and that's how it works 00:18:22.47000:18:22.480 so you see that now though that this is 00:18:25.48000:18:25.490 broken on the inside here so that could 00:18:29.95000:18:29.960 happen so this right here is not metal 00:18:31.84000:18:31.850 on these you see this right here it 00:18:37.27000:18:37.280 could just snap so that could be an 00:18:39.01000:18:39.020 issue now on a pump such as this right 00:18:41.53000:18:41.540 here you could have separation between 00:18:43.72000:18:43.730 the motor and the impeller so if you 00:18:46.72000:18:46.730 look in here you'll see the coupling 00:18:49.15000:18:49.160 that attaches both axles right there and 00:18:51.64000:18:51.650 you see the springs that are attached 00:18:52.90000:18:52.910 now you could have the rubber mount 00:18:54.82000:18:54.830 inside going bad and and basically 00:18:58.66000:18:58.670 breaking the the coupling assembly 00:19:00.61000:19:00.620 because the axles are out of line or you 00:19:03.25000:19:03.260 could have a weak spring or something 00:19:05.14000:19:05.150 like that and they snap and then it's no 00:19:07.84000:19:07.850 longer connected so that could be the 00:19:10.15000:19:10.160 problem so you just rectify that by 00:19:12.01000:19:12.020 taking these bolts off in order to 00:19:14.50000:19:14.510 replace the coupling assembly and 00:19:15.91000:19:15.920 possibly the rubber mount inside 00:19:18.18000:19:18.190 problem number 10 could be a loud noise 00:19:20.50000:19:20.510 coming from your circulating pump now 00:19:22.42000:19:22.430 it's typically not from your impeller 00:19:24.16000:19:24.170 it's typically from your bearings unless 00:19:26.08000:19:26.090 you hear water gurgling or if that's the 00:19:28.90000:19:28.910 kind of noise but if it's a squealing 00:19:30.46000:19:30.470 noise it's typically the bearings inside 00:19:33.34000:19:33.350 inside the the motor assembly now in 00:19:36.67000:19:36.680 this case right here these have to be 00:19:38.23000:19:38.240 oiled so if you don't wheel these 00:19:39.67000:19:39.680 bearings those bearings are going to 00:19:42.07000:19:42.080 deteriorate and you're gonna hear a 00:19:43.36000:19:43.370 squealing noise from those if you hear 00:19:45.22000:19:45.230 like a chattering noise something like 00:19:48.13000:19:48.140 that that could be from the coupling 00:19:50.86000:19:50.870 assembly that's inside of here so that 00:19:53.38000:19:53.390 wouldn't need to be addressed if you're 00:19:54.76000:19:54.770 looking for the multimeter I use in the 00:19:56.02000:19:56.030 video or the other tools I use out in 00:19:57.46000:19:57.470 the field I have them all linked down in 00:19:59.14000:19:59.150 the description section below if you 00:20:00.91000:20:00.920 want to help support this HVAC our 00:20:02.32000:20:02.330 training channel click here if you want 00:20:03.70000:20:03.710 to subscribe click here and if you want 00:20:05.05000:20:05.060 to see another HVAC our training video 00:20:06.64000:20:06.650 click right here hope you enjoyed 00:20:08.20000:20:08.210 yourself and we'll see you next time at 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