How to Check the Charge in Superheat for Fixed Orifices! SMAN460 WB & DB
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- Опубликовано: 30 июн 2024
- In this HVACR Training Video, I show how to use the SMAN460 Digital Gauge Set to Check the Refrigerant Charge on an R-22 System with a Piston Fixed Orifice. We use the Superheat Method and I show how to Manually Input the Indoor Wet Bulb and Outdoor Dry Bulb Temps as well as how to Wirelessly read the WB and DB in order for the SMAN to calculated Target Superheat.
I show correct charge and describe low charge and overcharged scenarios. Supervision is needed by a licensed HVACR Tech while doing this as Experience and Apprenticeship garners Wisdom and Safety.
Tools Used In The Video
Refrigerant hoses with valves - amzn.to/2aBumVI
FieldpieceSMAN480V Digital Manifold Set - amzn.to/2ytvGZL
SDMN6 Dual Digital Water Column Manometer with Pump: amzn.to/2UGclNv
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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. ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬
#hvacr #hvacr #hvactrainingvideos #hvactraining #hvactraining101 #acservice #acservicetech #manifold #digitalmanifold #piston #orificie #wetbulb #drybulb #temperature #superheat #meteringdevice #lineset #gauge
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For those that are looking for the tools used in the videos: (Linked Below)
Here is the Fieldpiece SMAN460 Digital Manifold Set- amzn.to/2nB4Fe6
Here is the Fieldpiece SMAN360 Digital Manifold Set- amzn.to/2BdoaD4
Here is a link to Refrigerant hoses with valves used in the videos amzn.to/2aBumVI
Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos amzn.to/2aenwTq
Here is the Yellow Jacket Manifold Gauge Set including standard hoses- amzn.to/2vLVkV9
Here is the Yellow Jacket 4 Port Brute Manifold with Hoses- amzn.to/2BkuGIq
Here is the Compact Ball Valve Attachment for the end of the Refrigerant Hose- amzn.to/2KUisW8
Here is the Quick Disconnect 90 degree attachment for the end of the refrigerant hose- amzn.to/2MMtVcg
Here is the link to the Appion Valve Core Removal Tool- amzn.to/2uYr8WL
Here is a link to the JB 6 CFM Vacuum Pump amzn.to/2nqbvo8
Here is the Link to the Appion Blue 3/8" to 1/4" Vacuum Hose- amzn.to/2uYlVyc
Here is the Link to the Appion Red 3/8" to 1/4" Vacuum Hose- amzn.to/2uYg6Ro
Here is the link to the Yellow Jacket 1/4" by 1/4" heavy duty hose straight- amzn.to/2umtcod
Here is the link to the CPS Vacuum Micron Gauge- amzn.to/2v1nM3O
Here is a link for RectorSeal Bubble Gas Leak Detector amzn.to/2ckWACn
Here is the link to the Fieldpiece ST4 Dual Temp Meter- amzn.to/2wc1ME3
Here is a link the Nitrogen Regulator amzn.to/2bXdR5f
Here is a link to the Nitrogen Flow Meter amzn.to/2brvoBg
Here is a link to the Digital Refrigerant Scale used amzn.to/2b9oXYl
Other tool links can be found in the video description section.
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AC Service Tech LLC
Hello,
Do you know if the SDP2 is compatible with the sman380v? I’m having trouble connecting the two
Excellent video. Definitely a one of kind teacher. Thanks for sharing
Thanks a lot Dean Martin 1966!
Really well explained thanks
Thanks Pedro!
Great video thanks a lot
Great video thank youuuuu
excellent video thank you
Thanks Noeisy1!
I'm already on to my next ticket
Great video Craig. I really learned a lot. I have one question for you. Would it be possible to take subcooling readings as well as superheat readings without hooking up your gauges to the condensor unit. I took a HVACR class about 8 years ago and my instructor said that was one of his biggest mistakes he saw technicians doing. He said that you should first take your superheat and subcooling readings first, figure what the system is doing, and what it should be doing. Once that is established then you can proceed to connect your gauges. By hooking up your gauges each time you are constantly introducing air and non condensables into the system. If you have one technician after another doing this. You will cause other problems to the a/c system. What are your thoughts on this? Thanks for all you do.
Thank you
Hi, great videos. What I would like ton know is what if your indoor wet bulb and ambient end up x ( no number) spot on the chart? What's your superheat then?
Could you make a video on how to properly use the digital gauges?
fieldpiece must LOVE you you might make more money selling tools
Really good information.
Just wondering about how much refrigerant would you remove to change the superheat by one degree.
I guess you would weigh it in ounces as you remove it.
Thank you.
Yes use a scale and it may be as small as a half ounce.
AWSOME
Thanks Armando!
I have a fixed orifice r22 system that was just changed over to r407, would I determine the superheated and charge level any differently?
Also had this been a variable orifice system would the target subcool be that is specified on the name plate for r22.
Yo A.C I recently bought the Sman 460 . I'm having doubts when I use it for a vacuum though as in im not sure why when I shut down my vaccum and valves why my micron reading keeps climbing way above 500 . Could you make video on the Sman 46o and all its functions . I think field piece is this best .
Hey Sean, I have heard of others saying the vacuum gauge leaks. I honestly do not use the SMAN460 or any other manifold gauge set when vacuuming. I keep them out of the equation for the very reason you are speaking of. I think of the SMAN460 more for the availability of using wireless indoor wet bulb readings compared to the built in micron gauge. Otherwise I would just use the SMAN 360, thanks and you should call Fieldpiece about that in order for them to rectify it. Thanks and let me know how you make out.
Putting dielectric grease into the shutoff valves will stop the leaking.
Good
Thanks
Do you use the same gauges on different refrigerant? Is so what do you do to keep them clean
With the yellow jacket gauge sets yeah we usually keep one set for use with each type of oil but I don't expect people to have 2-3 of the SMAN460's. You could blow it out with nitrogen for each use or keep two sets of hoses, one set for POE and one for Mineral oil. We do what we can without going crazy, thanks David!
hi, r410a system ( with fixed orifice) with equalized pressures of around 200psig. But once compressor starts the low side drops to 50 psig while the high side goes up to 300psig. I checked superheat was like 80F and subcooling was 2F. Does this mean the system has leaked out all the refrigerant? Does the 200psig equalized pressures means there's refrigerant in the system? thank you.
ac service tech this is a little off topic. I was reading modern refrigeration and AC and it stated " the liquid recovery method should not be used on all systems. Do not use liquid recovery on either heat pump systems or systems with less than ten pounds of refrigerant. " Can you interpret that for me ? Not understanding why that would be an issue at all....
I believe they are just talking about about recovering with a self contained recovery unit. Three things, it may not be worth recovering as a liquid only since there is a small amount of it in the system compared to larger systems. Also there is quite a bit of liquid in the accumulator which is not connected to the liquid port. Most smaller recovery machines can't handle liquid recovery only but just saturated refrigerant but larger recovery machines would work for liquid recovery. It makes sense to recover liquid out first on systems that have several hundred pounds of refrigerant inside but not on small units with less than 10. Anyway, that is what I think they mean without reading the context around the statement, thanks Jacob!
hi, my r22 suction saturated temp. is below 32F (around 20F). i tried to add some refrigerant to bring it up past 32F, but it won't go up. The low side pressure remains the same BUT the high side pressure rises. Do you think my filter drier is blocked? i see frost on the output of drier but not on the input side. i tapped at the drier and the low pressure drops to 0 on the low side. the unit has a piston . thanks.
Is the superheat wet bulb chart that is usually by the rating plate at the condenser on split systems universal? Because there has been times when I see them rubbed off due to weathering.
Yeah they are very close with the target superheat. If you don't have one then just use a generic chart. Have you seen "acservicetech superheat chart" ? Thanks
First I just want you to know I can't count how many times your videos provided me the information to over come A/C problems. Thank you very much for taking the time and doing these. As to this specific video I have not but as soon as I get off work I will! 👍🌡️🔥❄️
Can you make a video on mini splits? Inverter and non inverter. Thanks
Edgar, I plan on doing more on minisplits, thanks for letting me know what you would like to see!
@@acservicetechchannel superheat
I use a SDP2 with a SMAN460 for wireless IDWB. Can I sync another wireless Fieldpiece instrument for ODDB and what would it be if possible.
Yes I use the SC660 as shown in the video.
Here is a link to the Fieldpiece SC660 Wireless Multimeter- amzn.to/2gWDUhc
@@acservicetechchannel I just did the firmware update and I cant get my sc660 to sync.
Hi. I had an instance today that was confusing to me while trying to determine required superheat. Indoor WB=58 degrees; Vapor PSIG=60; Vapor line temp=47 degrees, outdoor dry bulb (temperature around condenser) = 96 degrees. There is no intersection of 58 WB and 96 dry bulb on the chart that gives a required superheat. I was using a Testo 550 digital gauge set. Domestic unit has fixed orifice. Am I missing something? Thanks.
you can use superheat calc android app approved by ashrae ,in your case it is 2.15 degree F
what clamp meter are you connecting to the sman 460
Do they still make systems with fixed orifices? Every modern system I come across has a TXV valve
Older systems are still running fixed orifice. Let's hope everything hasn't been replaced yet?
Will the Spd2 work on 5ton split units ?
Like the comfee , GE, Trane etc
Sure, it is not limited by the size or manufacturer, thanks!
What if your unit is wall mounted aircon how to get the indoor Wb temp. °f?
Hi Steven,
I just. Has some one install a new Ac Armstrong. 16 seers. It said quiet operation .but when the unit run the fan was so loud and also the compressor was noisy too.
Can you tell me what can I do.?!.
Thanks!
16 seers 3ton
It may be possible to install a compressor jacket around the compressor on the inside of the unit. It is basically fiberglass insulation inside two pieces of black plastic this forms a bag that is Velcroed around the compressor to quiet it. The compressor uses the refrigerant flow to cool the compressor so it won't hurt to cover it. There is not much to do with the fan unless it is unbalanced or the metal is rattling, thanks
@@acservicetechchannel .Thank so much. If the fan not balanced what 's I such do..?. I did paid 3,800 and I 'm not satisfied it. Can you has any idea what I such do.
Thanks..Again. !..
JIMMY TRAN why not take your concerns to the person who you paid 3800 instead of asking somebody else ?
@@user-ng4dx1sv4s .
Hi Thomas ,
Well just because I ready don't know much about Ac that why I ask if Steven . Because he an expert. .!.but thank for your command.
So you cant use delta t 16-20? On systems with a piston 410?
This is about my thermostat. You have some videos on them but cant find one about mine. My thermostat keeps resetting back to 85 and I dont know why. Been messing with it and it want stay on what i set it to just resets back to 85.
Is it a programmable one? If it is then the hold button needs to be on in order to override the program, thanks
@@acservicetechchannel it worked tysm
I had a big issue with a furdown (pancake) unit that nobody could helped me...i even called two a/c companies...called few of my old bosses VERY LOW super heat...i over charged system...i under charged system...i replaced compressor ... replaced dryer filter...vacuumed system...checked inside coil from access panel 1'x1' was able to see only one side of coil (clean)so the last resort was to replaced the inside coil and guess what ...when i removed the motor the fans and the wheels squirrel that's when i found out the issue... 70% of that side of the coils FULL of MOLD ...between parts and time 5,000$ down the drain..ps im not a master technician but felt good finding the problem after so much research...MOLD A TOPIC NOT MUCH COVER ON A/C VIDEOS...🤔
looks like hi side line is leaking at fitting adapter
Thanks Mike!
6. 2. We 1
Couple of pocket thermometers
Too much
I understand it is quite expensive, I just figured I would put out some videos for those that have them or are looking at getting them. People have been asking, thanks!