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Furnace Motor & Capacitor _ Repair and Replace

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Language: en

00:00:02.060
[Music]
00:00:11.290 00:00:11.300 hi I'm Vance and welcome back to repair
00:00:15.259 00:00:15.269 and replace in this episode I'll show
00:00:18.200 00:00:18.210 you how to replace the blower motor in a
00:00:20.420 00:00:20.430 gas furnace when the burner is lit the
00:00:27.890 00:00:27.900 blower fan is too late from running to
00:00:29.900 00:00:29.910 allow the heat exchanger to warm up this
00:00:32.749 00:00:32.759 prevents the furnace from circulating
00:00:34.639 00:00:34.649 cold air the blower fan then pushes the
00:00:38.180 00:00:38.190 air over the heat exchanger and
00:00:39.860 00:00:39.870 circulates it around your home if the
00:00:43.010 00:00:43.020 blower motor is receiving power and
00:00:44.900 00:00:44.910 still won't turn then the motor might be
00:00:47.450 00:00:47.460 seized or burnt out some motors use a
00:00:51.170 00:00:51.180 capacitor to energize the axillary
00:00:53.299 00:00:53.309 winding this creates a magnetic phase
00:00:56.959 00:00:56.969 shift providing the torque needed to
00:00:58.910 00:00:58.920 turn the rotor
00:01:03.930 00:01:03.940 weaken or fail over time preventing the
00:01:06.359 00:01:06.369 motor for running or starting properly
00:01:08.280 00:01:08.290 so it's recommended to also replace the
00:01:10.980 00:01:10.990 capacitor when replacing a motor to
00:01:15.240 00:01:15.250 begin you might need a socket wrench or
00:01:17.550 00:01:17.560 nut driver an adjustable wrench and
00:01:20.300 00:01:20.310 gloves
00:01:26.859 00:01:26.869 when working on your furnace always shut
00:01:29.630 00:01:29.640 off the power at closed gas valve remove
00:01:34.490 00:01:34.500 the top cover panel many furnaces use a
00:01:37.550 00:01:37.560 push lock or twist lock but some
00:01:39.889 00:01:39.899 furnaces will require a screwdriver or a
00:01:42.710 00:01:42.720 socket wrench
00:01:45.039 00:01:45.049 now remove the blower cover panel when
00:01:54.260 00:01:54.270 accessing the blower assembly it's best
00:01:56.510 00:01:56.520 to wear cut resistant gloves sheet metal
00:01:59.240 00:01:59.250 can have sharp edges so be careful next
00:02:03.199 00:02:03.209 unscrew the mounting screws you might
00:02:08.029 00:02:08.039 have to
00:02:08.700 00:02:08.710 move the control board if it's mounted
00:02:10.590 00:02:10.600 in front of the blower first take a
00:02:13.530 00:02:13.540 picture so you'll know how to reconnect
00:02:15.780 00:02:15.790 the wires afterwards now disconnect the
00:02:19.710 00:02:19.720 motor wires unscrew and set the control
00:02:25.080 00:02:25.090 board off to the side now slide the
00:02:30.540 00:02:30.550 blower assembly out first loosen the
00:02:38.250 00:02:38.260 screw that secures the blower wheel to
00:02:40.620 00:02:40.630 the motor shaft now flip the assembly
00:02:44.160 00:02:44.170 over
00:02:51.140 00:02:51.150 always assume capacitors are charged as
00:02:54.089 00:02:54.099 there is a risk of a serious electrical
00:02:56.580 00:02:56.590 shock
00:02:57.380 00:02:57.390 you can place a resistor or screwdriver
00:03:00.780 00:03:00.790 with an insulated handle across each
00:03:03.360 00:03:03.370 terminal this will short out and
00:03:05.670 00:03:05.680 discharge the capacitor
00:03:08.650 00:03:08.660 now disconnect the wires and remove the
00:03:11.740 00:03:11.750 capacitor the capacitance expressed in
00:03:16.570 00:03:16.580 micro farad's is a rating of how much
00:03:18.940 00:03:18.950 energy can be stored in capacitor this
00:03:21.730 00:03:21.740 should be matched exactly
00:03:25.040 00:03:25.050 the voltage rating refers to the maximum
00:03:27.500 00:03:27.510 voltage that it can handle you can use a
00:03:29.990 00:03:30.000 capacitor with an equal or higher
00:03:31.640 00:03:31.650 voltage rating but never with a lower
00:03:34.280 00:03:34.290 rating as this can result in capacitor
00:03:36.710 00:03:36.720 failure
00:03:41.410 00:03:41.420 next use a socket wrench to remove the
00:03:44.929 00:03:44.939 mounting screws holding the motor to the
00:03:47.300 00:03:47.310 housing now remove the motor
00:03:55.310 00:03:55.320 take note and mark the position of the
00:03:58.680 00:03:58.690 motor in the mounting bracket unscrew
00:04:03.900 00:04:03.910 the bracket screws and remove the motor
00:04:13.370 00:04:13.380 the motor nameplate is the key for
00:04:16.080 00:04:16.090 finding a replacement as it lists the
00:04:18.090 00:04:18.100 model number and electrical specs of the
00:04:20.340 00:04:20.350 motor in some cases the model number can
00:04:23.250 00:04:23.260 be used to find an OEM motor or a direct
00:04:26.160 00:04:26.170 cross reference if needed you can still
00:04:28.920 00:04:28.930 use the motor specifications to find a
00:04:31.320 00:04:31.330 proper replacement first match the
00:04:34.920 00:04:34.930 physical specs this includes the motor
00:04:37.470 00:04:37.480 diameter shaft size and mounting type
00:04:40.460 00:04:40.470 then match the electrical specs which
00:04:43.950 00:04:43.960 includes horsepower voltage amps rpm
00:04:48.409 00:04:48.419 rotation motor type and capacitor size
00:04:59.600 00:04:59.610 slide the new motor into the bracket and
00:05:02.629 00:05:02.639 align the position with the mark
00:05:09.800 00:05:09.810 now tighten the bracket screws
00:05:16.660 00:05:16.670 slide the motor shaft into the blower
00:05:19.730 00:05:19.740 wheel now align the holes in the
00:05:23.600 00:05:23.610 mounting bracket and tighten the screws
00:05:29.380 00:05:29.390 Center the blower wheel and align the
00:05:32.030 00:05:32.040 flat side of the motor shaft and tighten
00:05:35.540 00:05:35.550 the setscrew now reconnect the ground
00:05:40.220 00:05:40.230 wire and replace the capacitor align the
00:05:51.230 00:05:51.240 rails and slide the blower assembly into
00:05:53.750 00:05:53.760 place next secure the control board and
00:06:00.940 00:06:00.950 reconnect the wires now tighten the
00:06:07.730 00:06:07.740 mounting screws
00:06:15.170 00:06:15.180 many furnaces have a switch that cuts
00:06:17.850 00:06:17.860 power to the furnace if the blower cover
00:06:20.100 00:06:20.110 is open so make sure that the panel is
00:06:22.650 00:06:22.660 properly aligned and secure now replace
00:06:27.090 00:06:27.100 the upper cover
00:06:31.260 00:06:31.270 next open the gas valve now turn on the
00:06:36.250 00:06:36.260 power to your furnace the furnace should
00:06:40.150 00:06:40.160 be running normally if you like this and
00:06:45.580 00:06:45.590 want to see more tutorials and
00:06:47.260 00:06:47.270 informational videos then subscribe to
00:06:49.750 00:06:49.760 our Channel and if you need help you can
00:06:52.420 00:06:52.430 call or visit a name relocation to talk
00:06:55.240 00:06:55.250 with our knowledgeable staff thanks for
00:06:58.060 00:06:58.070 watching
00:07:05.820 00:07:05.830 you

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