Stock These Run CAPACITOR SIZES in the Residential HVAC Service Truck! Why?!!
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- čas přidán 14. 07. 2023
- In this HVAC Training Video, I Show Which Run Capacitors are the Most Commonly Used When Servicing Residential Furnaces, Air Handlers, Air Conditioners, and Heat Pumps! I Explain Why and Where Each Capacitor Size is Needed and How to Make the Correct Capacitor Size Needed if You Don't Have it in order to Fix the System! Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.
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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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Craig is an absolute legend in our field. Keep up the great work! 👊🏽💪🏽
Thanks for video. One of the techs with best teaching ability in the biz IMO
Thank you, I was wondering this and magically just popped up in my feed, awesome!
Great info. Thanks Craig
I’ve seen older lennox units blower motors using 40mfd capacitors crazy
Thank you for sharing this videos. Helpful.
Nice this one answered my question
Craig hits it out of the park --AGAIN!!!! Many thanks for the GREAT content.
Glad you enjoy it!
Thank you for the explanation on all these capacitor all your videos are very helpful
You are welcome!
Thank you for sharing!
My pleasure!
A lot of good information
Great video!
Good job
We like your channel, and subbed!
AmRad's seem to be the best caps on the market right now, made here in the states. Their "Turbo" universal dual caps are pricier, but can be wired to accomodate nearly all of the MFD ratings on motors, it eliminates the neeed to stock your truck with all of the individual dual run sizes, especially if you have a small truck/van that doesn't have a lot of room. In the event you run into a unit with an uncommon rating such as a 40/10 or a 35/7.5, as Craig said you'll be able to get the customer up and running. I also like the CPT (compressor protector terminal) feature AmRad has that works good with hard start kits, in the event the potential relay fails to take the HSK out of the circuit when the compressor starts, this feature will blow open like a fuse and save the compressor.
Run the Turbo 200s. Universal motor-run & the mini universal fan motor-run caps. Made in USA. Good warranty. Pass the cost on to end customer. Simplify stocking.
That’s what I do, most likely you will change the unit before the capacitor again.
I have transitioned my van stock to primarily Turbo 200’s in all three sizes. So much simpler and I never need to run to a parts house because I don’t have the right cap.
also, remember the relationship to know how the power of the capacitor affects the changes in voltage or frequency of the nominal design. Q1/V1=Q2/V2.
Do not use titan caps what so ever. Unless you want to go back and change them every single year. Mars premium caps or turbo 200s. That’s all I’ll ever use. If I even see a titan I change it out because there fail rate is that bad.
Cause they're built so cheap. Dual cap is only like $5. Company I work for buys titan cause they're so cheap to maximize profit. But I guess they want to kill customers motors...
Not true yes they are inferior quality compared to the titan pro or armad caps but I’ve installed ones on systems and they last just as long as manufacturers cap i means it’s multiple variables that can cause a capacitor to fail besides build quality. Now I do install and recommend amrad or titan pro caps but I give the customer the option of paying a lesser amount for a capacitor that comes with a weak warranty vs the other ones that comes with a 5 year. That’s like saying the cap is bad because of the brand and the new one you put in that’s a better brand will not fail and you come back a year later because it was something else causing that cap to fail
The Titan Pro caps are total junk. Might get a year or two out of them.
Thank you! I haven't had a chance to deal with them since they came out. Good to know.
I work for a company called Marr’s and new techs thought we had our own capacitors as a company
excellent video and class. Please in the next video, Can you explain the relationship between amp vs pressure?
They're two different things. Amperes are a measure of electrical current flow, but pressure is a mechanical measurement.
Turning electrical power (amps times volts) into pressure and flow is pretty complex, and depends on the efficiency and design of the compressor.
Does that help at all?
Formula for capacitors are: In Parallel increase capacitance C = C1 + C2, and In Series decrease capacitance 1/C = 1/C1 + 1/C2. Example 1/5 + 1/7.5 = 0.2 + 0.13333333 = 0.3333333333 and 1 over this gives 3 MFD.
Craig what causes a sweaty blower cage. I see water drops and condensation underneath the snail.
Question. I monitor our home's wattage with a Sense unit.
My A/C was ruining smoothly, ie. the wattage was flat and smooth and unwavering.
The capacitor failed, and a the tech replaced it and the A/C runs again.
However I noticed the Wattage meter is reading a fluctuation in current then the A/C is running now.
It fluctuates as much as 1,100 watts now.
The tech came back out to check with amp meter and said it was within specs.
Is this an issue? What would cause this, wrong sized capacitor?
Thanks.
Can I use a dual run in place of my single run on my air handler?
The capacitor reactance[ohms] is figured 1/(2*3.14[pi]*60[hertz]*farads.
or 1/(377*farads)
Microfarads is Farads*10^-6.
i.e. 5mf capacitor = 1/(377*.000005)=530 ohms Xc
so if you connect a 5mf capacitor across a 120V 60Hz AC source, it will draw 230ma
120V/530ohm=.230amp. Since the current and voltage are out of phase, it will consume no power…therefore 120V*.230A or 27.6VA.
I’m curious too which brand you think is the best or last the longest?
Most techs like the USA made ones, like the AmRad.
amrad
AMRAD AND TRADEPRO
COMAP FROM ITALY.
Which brand do you recommend?
Is Amrad any better?
Mars premium caps!
I've had 3 or 4 bad Mars capacitors in a row. I'd recommend something else.
Dear all,I have a question which capacitor should be used when there is no detail on capacitor that the burn,so does anyone have the formula please suggest me ,I asked everyone but no one has a proper answer
General question for anyone: Do manufacturers pair compressors & fans with capacitors to avoid going much larger on those components?
Capacitor mfr make what equipment mfr needs. More efficient outdoor fan motors use 7.5 instead of 5, so now we stock dual caps with 7.5. It was not necessary 25 yrs ago for residential anyway.
Remember, you can put a 5 and a 7.5 µF capacitor in series to make a 3 µF capacitor. Of course you need to have room to install two capacitors, wrap them up and secure them properly.
If in series that would be 12.5 mfd capacitor?
C1 X C2/ C1 + C2 = capacitor when wired in series@@theprofessor5584
I just wish the turbo 200 wasn't like $80
I have a 4 ton two speed compressor that quit a few days ago in the extreme heat wave in N. TX. A few months prior, I took off the service cover on the condensor to see what cap it had so I could buy one as a backup, while waiting for what could be hours to a day or more for a service tech. I was *very surprised to see a **_30 / 5 µF dual run capacitor_** as the only one in the cabinet* The bad one tested 17.4 on the Herm, so I knew it was bad. Grabbed my spare and was back in business in 15 minutes or less. LRA is 105 amp, but drops to 11.5 Amp (on the low speed) running after startup.
Thus, why would such a large unit only need a 30 µF run / 5µF fan CAP?
I would check mfr recommendations. Sounds low.
Tell us what the make and exact model off the label of your AC outdoor condenser. I will lookup the proper capacitor from the factory. I wouldn't be surprised if it should be a 45/5 or 40/5. But anything is possible.
@@Balticblue93 Amana ASXC160481BE . Two speed scroll compressor. I think the newer model is a 17 seer. I was unable to find the specs. It's been running fine last 2 weeks with 30 / 5 µF +/- 6%
@@Balticblue93 Amana ASXC160481BE . Two speed scroll compressor. I think the newer model is a 17 seer. I was unable to find the specs. It's been running fine last 2 weeks with 30 / 5 µF +/- 6%
I've had to change 370/440 45/5 dual run capacitor 2 times
1st it lasted a month
2nd time it lasted a week
I checked windings for both the compressor and cfm which tested fine both times and amp draws were both within range of the data plate. Condenser coil is clean and cfm bearings are good spin freely
What's something that I am missing or not checking resulting in the capacitors going out?
If you have repeated capacitor failures annually and you’re buying good quality capacitors that cost $15 or more, then you might have a compressor going bad.
@@rv10flyer84 That's what I'm thinking too both times I replace the capacitor they were completely dead. I've noticed that on the top shell on the compressor showed signs of overheating. For context this very same unit had a leak at the high pressure switch which blew out the charge I repaired and charged it accordingly. The only thing I haven't done yet was an insulation test, but since I replaced that capacitor customer hasn't called back since.
Possible power issues? Surge or spike from nearby lightning?
If you put the same brand cap in you may have just gotten a bad batch of capacitors. Of course, make sure you are not using a start capacitor in place of a run capacitor. Using a start capacitor in place of a run capacitor will fail.
@@OnusBones maybe
My last comment I said that my run capacitor failed. I got it replaced and the air conditioner works again, but that's not the end of the story. The capacitor that failed was NOT the original one that came with the air conditioner. How do I know? The failed capacitor was a 55/5 MFD capacitor. After some research, I found out that my air conditioner was only rated for a 35/5 MFD capacitor.🤦🤦🤦
damn, somebody messed up. Did you check label on condenser fan and the label on the compresser for capacitor specs.
@@Franklinveterinarycenter1of3 Yes. I did, but only after I looked online and saw that the capacitor was rated for 35 microfarads and I'm like wait a minute, the capacitor's been oversized this whole time?!
Two takeaways:
First, now I'm glad that the capacitor went out, or else I wouldn't know that.
Second, I'm surprised that the compressor didn't burn out, especially since it's a 20 year old unit.
@@eric01406This is not to imply bigger is better, because a capacitor that is too large can cause energy consumption to rise. In both instances, be it too large or too small, the life of the motor will be shortened due to overheated motor windings.
10uf 2000volt cpstr give me
UGH..NAH MAN....JUST STOCK 2 TURBO CAPS.....YOU NOT TO BRIGHT
The larger metal with higher rated voltage and BETTER QUALITY will probably last to the next century.
If the homeowner changes the filter regularly 😅
@@hotfeva9843
I'm writing about the capacitors, they will be still in good condition after everything else is gone.
Maybe capacitors made 30 to 40 years ago. I haven’t seen any capacitors made in the last 20 years that will outlast the unit. And yes, I’ve had to go back and replace Amrad capacitors after 5 to 7 years.
@@rv10flyer84
Okay, I believe you have more experience than me 👍