HVAC CONTACTOR Operation, Types, Ratings, Problems, Testing!
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- Опубликовано: 22 сен 2023
- In this HVAC Training Video, I Show How Contactors Function, Where they are Installed, the Different Types, Common Problems, and Testing Methods! The Safest Way to Test HVAC Contactors is by Measuring Electrical Resistance! Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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⚠️ Disclaimer:
Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #contactor #operation #testing
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This man is the goat of HVAC/R
Another great video, Craig. Between you, Bryan and Ty, the homeowner and techs have a great arsenal of information to make informed decisions. Thanks for being there.
I'm thrilled to hear that you find our content valuable! Thank you for watching our content!
even after i graduated back in may, i still rewatch and review my notes after work or on weekends. never stop learning
I was looking for This video last night, life saver on my way to a service call right now where the contractor might be the issue
Love your dedication to teaching! Thank you Craig!
You the man ! Couple of years in the trade and your videos have helped me a lot thank you
Thank you for learning me more❤. Mechanic learning electrical here.
Thank you for all your knowledge and sharing it with everyone!!!
Awesome video man! I always refer new Techs to your channel. You are the best!
Well explained, good job Craig!
Another great video. Thanks for showing the drop/diff in voltage across the contacts. You must have a team of techs just looking for bad parts to bring you for future videos.
Great video Craig. I always look forward to your teaching. Thank you.
I'm glad you enjoyed our video! Thank you for watching!
Very thorough and well-done! Many thanks!
Glad you enjoyed it!
Thank you for the video about contector
As always I like your videos your one of the best technician….
Thanks for watching & supporting us!
Craig you're worthy of a statue 🗽 I love the trade but have issues with people thinking energy is free. The price will be going up. Stay strong. Your looking good 💪🏻
Excellent video will show it to my technicians. Wanted to add that something I've found many times is the contactor blowing the fuse at the air handler when calling for cooling. When that happens usually de resistance of the contactor is like between 1-7 ohms. Ohms should read between 9-17 most of the times.
Yeah, was disappointed he didn't show more of that.. these contactor coils are causing problems these days, with shorts. You ohm out the coil and it's generally around 1 or so, a lot of techs don't know about to do that.
Good info! Thanks for sharing 👍
Excellent video, thank you sir!
Glad it was helpful!
I wanted to add, the details shown in the video is excellent and gives greater understanding of the electrical components of the HVAC system. Please sir if you would I like more information on the electrical components in your future post and thank your time and teaching
Thanks for sharing & we will take your request to heart!
I love these videos
Thank you!!
Thank you 👍
Informative and easy to understand.
Glad you liked it!
Very good ...watching you from Gh
Thank you sir!
very good thank you
very informative every time👍
Thank you for watching!
Great Video. Is there a reason contactors cannot be sanded or chemically cleaned? Can it be a short-term solution maybe?
Amazing video 👍🏼
Thank you! 👍
What should be the resistance reading on the coil for a 2 pole and 3 pole Contactor ?
)ربي زدني علمآ)May God increase me in knowledge
Nice
On the voltage drop test, what do i need to set my meter to? I keep seeing 120v?
My outside a/c unit fan runs constantly whether the compressor is on or off, and when off, the fan runs at a slower speed. So the unit is still cooling, but when the compressor shurs off, the condenser fan still runs. Faulty contactor switch?
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👍👍
When checking the coil resistance, Do you have to disconnect the two wires?
No .
@@94OaxEm Thanks!
I just ask around when im looking to find a contractor.
LRA locked rotor amps: the rotor is "locked" and not rotating at all. Anything higher than the LRA, the contact will be rendered useless. (Burned up).
OK
The voltage drop across the contacts is not convincing. You need current flowing to really demonstrate the problem. Using Low-Z on the meter may well have brought the apparent voltage drop down to zero given there was no current flow through the contacts. Also it would have been worth pointing out the first contactor had one permanently connected pole in addition to the single switched pole (sometimes called a shunt or one and a half poles)
I definitely agree with everything you said there, but for us seasoned technicians, we already knew that. But for those that learning, that would have been the better way to explain it.
How close to LRA rating could a load be allowed to run without potential problems
Should be at RLA
@@maness2112 my wording here was wrong. What I meant to say is how close to LRA on startup would a load like a compressor be too high. For example I got 102 inrush amps with a LRA of 105 on a compressor
@@mrgreen9086 In that case, I would replace the contactor with a high LRA overhead and most likely install a hard start kit. 5-2-1 is the ideal hard start that I install, i don't do the two wire cheap units. But you are still within spec at 102 of 105 but I can't see I see many LRA units as low as 105. Usually, it is 150-200 for the models that I buy and install for my clients.
Wow. Even a little voltage drop or resistance could mess up your contactors.
،🐝🔧🥰💪
Speaking in AMERICAN English ?