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      Webinar Recordings Index Page   11/07/2017

      On-demand appliance repair training videos for Professional Appliantologist members Over 30 hours (and growing!) of original, high quality appliance training webinars developed and given by yours truly are at your fingertips, on topics you won't find anywhere else. Fill in those knowledge gaps, strengthen those areas of uncertainty, and boost your skills. Watch on mobile or desktop at your convenience whenever, wherever.  Ultra Short Primer on Basic Electricity, Circuits, Ohm's Law, and Schematic Reading (Length: 1:04:48) Basic Refrigerator Troubleshooting (Length: 1:10:45) Schematic Reading Workshop, 10/2015 (Length 1:19:08) Troubleshooting Strategies for Computer-Controlled Appliances (Length: 48:34) Semiconductors and PN Junctions (Length: 1:04:37) Appliance Temperature Sensing Devices & Technology (Length: 1:27:33) Voltage Measurements, Meters, Ghost Voltages, and Triac-controlled Neutrals (Length: 1:29:32) Troubleshooting with Tech Sheets, Part 1, 4/2016 (Length: 1:09:26) Troubleshooting with Tech Sheets, Part 2, 4/2016 (Length: 1:21:11) Tech Sheet Review, 4/9/2016: Bosch Speed Cooker, Amana Refrigerator, GE Glass Cooktop Range (Length: 1:22:58) Pulse Width Modulated (PWM) Switches used in Samsung Switched Mode Power Supplies (SMPS) (Length: 27:07) PWM Computer Cooling Fan in a Whirlpool Refrigerator (Length: 14:53) Understanding AC Split-phase Household Power Supplies (Length: 52:41) Troubleshooting a Samsung Electric Dryer without Disassembly using Live Tests and the Schematic (Length: 22:47) Troubleshooting a Bosch Dishwasher No-Heat Problem using the Schematic and Live Tests (Length: 15:38) Linear Motors and Linear Compressors (Length: 55:54) Bi-directional PSC Drive Motor Systems in Whirlpool VM Washers (Length: 56:52) Appliance Service Call Structure and Troubleshooting Strategies (Length: 1:00:16) The Ten Step Troubleshooting Tango and Workshop Exercises (Length: 1:35:39) Troubleshooting Ten-Step Tango Advanced Workshop (Length: 1:32:06) Ten-Step Tango Troubleshooting Workshop: Refrigerators (Length: 1:35:57) Whirlpool Duet Washer Schematic Analysis & Whirlpool Dryer Moisture Sensor System (Length: 1:03:04) Neutral Vs. Ground, Inverter Microwave, Digital Communications, Loading Down in DC loads, and more! (Length: 1:14:45) Gas Oven Service Call After a Parts Changing Monkey (Length: 36:04) AFCI and GFCI Circuit Protection Technology (Length: 41:26) Troubleshooting Samsung Refrigerators and more (Length: 1:29:58) 3-way Valves and Dual Evaporator Refrigerators (Length: 1:15:45) Split-Phase Compressors and PTC Start Devices (Length: 1:11:57) Gas Dryer Ignition Systems (Length: 53:50) Refrigerator Sealed System Thermodynamics, Part 1 (Length: 43:07) Refrigerator Sealed System Thermodynamics, Part 2 (Length: 1:09:09) Refrigerator Sealed System Thermodynamics, Part 3 (Length: 1:11:56) Refrigerator Sealed System Thermodynamics, Part 4 (Length: 37:45) Refrigerator Sealed System Thermodynamics, Part 5 (Length: 16:35) To access these webinars and all the other info-goodies here at Appliantology, become a Professional Appliantologist today. If you need cost-effective, time-flexible, state-of-the-art appliance technical training, check out the Master Samurai Tech Academy.
fairbank56

Calculating superheat

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fairbank56

  Ok, I've been doing some extensive reading about how residential HVAC works and how to determine if your system is operating properly. There's a lot of inaccurate garbage on youtube (yeah, I know) but I had been viewing some of this guys videos and he seemed to know what he was doing until I came across this one.

 

http://www.youtube.com/watch?v=sVvJbjWTiOY&feature=c4-overview&playnext=1&list=TLil43F4xsQn8

 

  Seems to me, he isn't using the sliderule calculator correctly. He is supposed to be seeing an 18° superheat and according to how he is using the calculator, it's about right on but according to his gauge readings, it's actually 4°. His suction line temp is 61° and vapor temp is 57°. Am I missing something?

 

Eric

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fairbank56

  Ok, nevermind, I misunderstood what he was saying. He never did give the suction line saturation temp, just the pressure which was around 68psi which is good for his required superheat.

 

Eric

Edited by fairbank56

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smasher711

I watched about 15 sec of the video and noticed that there is no water around the unit, Why do I bring this up? If you are going to get your Freon level right on the money by checking with Super heat and sub cool there are a couple of things you would want to check first, Evap coil clean ? If you have a thin layer of dust on your evap coil fins the Freon is not going to absorb heat properly and this will throw everything off right outta the gate. Check it. Of course put a new filter in , I use the cheap ones , they are not real restrictive and do a decent job, just be sure and change them about every 30 days for low to the ground return vents or 3-6 months for returns that are in the ceiling. Might as well give the blower wheel a gander with your insp. mirror, if there is  Dust built up in the cups of the fins will not move air well. And last wash the outside unit. Nowdays with the higher efficiency units a TXV valve installed will call for different charging procedures  and if you are a home owner I highly recommend calling a licensed Technician to help out , you could ruin a very expensive unit by trying to save a few bucks :wink:

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