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Samurai Appliance Repair Man's Blog



What does the run capacitor do in split-phase compressor circuits?

compressor, refrigerator and 2 more...

The run capacitor is wired in series with the start winding. When the compressor first starts, the run capacitor is shunted by the closed PTC (or whatever start relay or device is being used) so current just flows through the main and start windings which are in parallel with each other. The start winding is there to create that split-phase magnetic field that's out of phase with the main winding field that rotates around the stator. This rotating magnetic field is what starts the rotor turning from a dead stop.

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After the compressor has started and is up and running, the PTC opens which removes the shunt from the run capacitor. Now the run capacitor and start winding are in series with each other and both are in parallel with the main winding.

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At this point, the run capacitor does a couple things:

1) limits current flow through the start winding

2) smooths out the back EMF pulses from the main winding.

The net effect of the run capacitor is to reduce the current draw of the compressor while running (which also helps it run a bit cooler) and to help the compressor run smoother and more efficiently.

If the run capacitor were shorted (ie., replaced by a wire), the compressor would still start but the compressor would draw A LOT more current, run very rough, and quickly kickout on thermal overload.

I have never seen a run capacitor fail short.


Learn more about refrigerators and how to troubleshoot them in the Refrigerators training course at the Samurai Tech Academy.




Source: Sub Zero 632-S S/N prior to 1810000


Learn Appliance Repair Online at the Samurai Tech Academy - Limited Time Tuition Discount!

Posted by Samurai Appliance Repair Man, in Appliance Repair Training 06 July 2015 · 506 views
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Learn appliance repair at the best online appliance repair school on the web! Act now to take advantage of this limited-time offer for a 14% tuition discount. Offer ends July 11, 2015. Use the coupon code FREEDOM14 on the Enroll page: http://mastersamurai...ine-enrollment/

Check out all our appliance repair training courses here: http://mastersamurai...repair-courses/

http://mastersamuraitech.com/


Basic Electricity Demonstrated on the Hoary Cliffs of Moher

cliffs of moher and 3 more...
In this video, filmed on the hoary Cliffs of Moher in Ireland, I demonstrate basic electrical principles, like voltage and current path, using an electric cow fence charged with 5,000 volts. See, even when I'm on vacation, I'm thinking of ways I can explain this stuff to y'all!




The Advanced Schematic Analysis and Troubleshooting training course is now available!

Posted by Samurai Appliance Repair Man, in Appliance Repair Training 24 May 2015 · 515 views
appliance tech training, ASAT and 2 more...
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At last, your wait is at an end: The Advanced Schematic Analysis and Troubleshooting (ASAT) training course is now open for enrollment!

In the ASAT course, you will delve deeply into sophisticated and esoteric appliance circuit troubleshooting techniques. You'll learn how to use timing charts together with the schematic to troubleshoot problems; how to use Ohm's Law as a powerful troubleshooting tool to give you a clear understanding of how a circuit works; how to troubleshoot deceptive and tricky open neutral problems; and how to troubleshoot appliances with control boards, including multiple control boards and microprocessor boards.

But wait-- incredibly, there's more! You will also put your newly-found schematic reading and troubleshooting skills to the test in a challenging series of schematic exercises where you're given a tech sheet and schematic and then asked a series of quiz questions about them. The quiz is graded instantly.

These schematic exercises are a powerful component of the ASAT course because you get to apply the principles you've learned in the screencasts on different tech sheets and schematics. The exercises use the actual tech sheets from real appliances and cover various brands (Frigidaire, GE, Whirlpool, Samsung, Bosch, and Wolf) and appliance types (washer, stacked laundry, range, dishwasher, dual fuel range, and refrigerator). The idea is not to give you monkey training on specific appliances, but rather to give you practice at applying the troubleshooting principles taught in the course.

The ASAT course requires a solid understanding of electricity, circuits, and troubleshooting, which can be learned from the Fundamentals of Appliance Repair training course or the Basic Electricity Boot Camp (BEBC). The BEBC course is designed for the experienced appliance tech who wants to take the ASAT course but needs the prerequisite thorough training in basic electricity, circuits, and schematics. It is not offered as a stand-alone course, only bundled with the ASAT course.

Click here to enroll in the Advanced Schematic Analysis and Troubleshooting course today!

We've been getting slammed with new enrollments from techs who've been asking for this course as well as techs who are interested in it and want to know more. Here are some of the common questions folks are asking us about the ASAT course:

Q. Will this course help me work on Samsungs, or Bosch, etc??

A. Absolutely! But maybe not for the reason you may think. You will learn troubleshooting principles and techniques that apply to any brand. The point of the ASAT course is not to give you monkey training on specific appliances but rather to teach you advanced technical skills and to give you practice at interpreting schematics and applying the troubleshooting principles taught in the course.

Q. How much about electricity do I need to know to take the ASAT course?

A. You should have a good working understanding of basic electricity and series and parallel circuits and already have some familiarity with reading schematics. You would get a solid foundation in these skills in the Fundamentals of Appliance Repair training course or the Basic Electricity Boot Camp.

Q. I've already taken the Fundamentals course how will the ASAT course help me beyond that?

A. The ASAT course kicks it up to 11 and gives you in-depth instruction on tricky troubleshooting situations that commonly befuddle techs such as how to troubleshoot deceptive and tricky open neutral problems and how to troubleshoot appliances with control boards, including multiple control boards and microprocessor boards.

Q. How long will it take to complete the course?

A. The ASAT course is a combined total of 17 lessons and schematic exercise units.

The lessons consist of 12 Samurai-original presentation videos, almost 5 hours of viewing time, some you'll need to watch more than once. Each lesson has a quiz where you'll apply what you've learned in the presentation.

In addition, the course has 6 schematic exercises (more may be added over time) where you're given a tech sheet or service manual and asked a series of questions requiring you to read the schematics and interpret specifications in various troubleshooting scenarios.

How long will all this take? That's up to you! The course is entirely self-paced and the time it takes for you to complete it depends on how much you work at it. And you can start the course any time you like after you enroll.

Q. How long will I have access to the course?

A. As with all Samurai Tech Academy courses, you have lifetime access to any course you are enrolled in, even after you graduate! This includes access to any new material added to the courses (as we frequently do) to keep them fresh and up to date.

Q. How much is the tuition for the ASAT course?

A. Tuition is $350 but we're offering a 10% discount coupon good through the end of the month. Just enter ASATLAUNCH in the coupon slot on the enroll page. BTW, that coupon is good for 10% off any of our courses and it expires at the end of this month so...

Click here to enroll in the Advanced Schematic Analysis and Troubleshooting course today!

If you have any other questions, post 'em here or contact me through the Academy's contact form.


Appliance Tech Training Scholarships For Military Veterans

Posted by Samurai Appliance Repair Man, in Appliance Repair Training 24 May 2015 · 568 views
scholarship, veterans, military and 1 more...
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Just in time for Memorial Day, the Samurai Tech Academy and ApplianceZone.com team up to offer a scholarship opportunity for free training to military veterans who have the desire to enter the highly rewarding field of appliance repair. It's our way of saying "THANKS!" to all military veterans for the sacrifices they've made for us by serving in the armed forces.

Learning a skilled trade, like appliance repair, is a great way to ease the transition back into civilian life if you're just coming off active duty. Skilled appliance techs are in great demand with lots of employment opportunities. It's also a great way to start your own business and be self-employed.

Scholarship recipients will have ½ of their tuition paid at the start of the Fundamentals of Appliance Repair training course at the Samurai Tech Academy, with the remaining tuition costs being reimbursed to the recipient pending completion of the course. The course must be completed within 90 days to fulfill the scholarship criteria for reimbursement.

ELIGIBILITY REQUIREMENTS:

Applicant must be retired, honorably discharged, active duty, or a member of the National Guard or Reserve.

Learn more about the veteran's scholarship program and apply at ApplianceTechScholarship.com






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Appliance Tech Training Scholarships for Veterans

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