How To Test Ac Clutch Cycling Switch
nickb2
Wrench. Diagnostic Tech.
- #4
Hullo Jack. Since this is not my area of specialty, doesn't this audio like an overcharged organisation? Or peradventure an orifice tube trouble or expansion valve?
What where depression and high side pressure level readings? Ambient temp was quite high. Indexing for humidity.
How does humidity touch on a AC arrangement. For the organisation to freeze upwardly similar that, something definitely jammed up.
Not my writing, just constitute this on a random google search.
Suction Command Valves For Not-Cycling Compressors
General Motors has used various control valves, the STV (Suction Throttling Valve), the POA (Pilot Operated Absolute) valve, and the V5 compressor control Valve. They control and cycle the minimum pressure in the evaporator, there by controlling and cycling the minimum temperature. The aftermarket states that yous should exist adjusted back 3 to 4 PSI with R-134a in gild to achieve the same temperature. This is because the pressure level temperature relationship of R-12 and R-134a is different. For instance at 25 °F the force per unit area of R-12 is 24.6 PSI and the pressure of R-134a is 22.1 PSI.
Pressure Temperature Tabular array
Virtually valves volition have a lock nut and an adjustment screw on the inlet end. One eight plow counterclockwise lowers the low side force per unit area approximately 2 PSI and 1 quarter lowers the low side pressure level approximately four PSI. I accept not heard of whatever mention of the V5 compressor command valve, which changes the compressor displacement acording to temperature.
CLUTCH CYCLING SWITCH
Recommendations From A/C Shops and Aftermarket:
Lower the adjustment of the clutch cycling switch to 21 to 22 PSI. This is considering the pressure temperature relationship of R-12 and R-134a is dissimilar. For example at 25 °F the force per unit area of R-12 is 24.6 PSI and the pressure of R-134a is 22.ane PSI.
Pressure Temperature Table
If information technology is adjustable there volition be an adjustment screw between the 2 terminals. One viii turn counterclockwise lowers the cutting out pressure approximately two PSI and one quarter lowers the cut out pressure approximately 4 PSI.
nickb2
Wrench. Diagnostic Tech.
- #5
This for me was interesting. Since I alive in a common cold country, AC is not my forte. Good to know 1/viii back off will affect retrofits.
I had no thought!! 2 to 4 psi departure can affect big time on low pressure side.
Cool fox. Thanks for your experience and advice. I learned something new today.
nickb2
Wrench. Diagnostic Tech.
- #half-dozen
Now I experience like an idiot.
I should have known this. An old dominate did pay for me to written report this. I guess I forgot that chapter and was to enthralled with hotel room and dinner was superb. The scrambled eggs not so much. I think they where powdered eggs. Yuck!! I was probably hungover at that moment in time.
All I got was a Cfc certification and didn't how to use it. Joke at this indicate.
Which reminds me, I probably demand to re-certify. Just some other useless card in my wallet.
nickb2
Wrench. Diagnostic Tech.
- #vii
I think someone way more intelligent than me wrote something to this effect.
"oestrus is just an absenteeism of cold" Probably einstein. Heat e'er gravitates toward common cold. Humidity reverses this effect essentially. Condensation acts like a bulwark. An isolation so to speak.
Why exercise evaporators freeze?
I institute this overnice commodity
http://www.aa1car.com/library/ac98.htm
nickb2
Wrench. Diagnostic Tech.
- #8
I read a book the other twenty-four hour period. It talked well-nigh how pride and ego become hand in paw.
My linear thinking gets in the way. Bruce Lee in one case said that the fastest to signal A and B is a straight line. That stuck in my head. I applied this to electronics. It was easy to comprehend an electron searching a home ground indicate.
When I was diagnosed OCD, I did non desire to believe the physician. I nevertheless pass up the diagnosis. Neurons and synapses fire to quick in my head, I get confused. And when that happens, I feel like at a stand up still.
Not a quiet place in my head. Then I smack my caput to center the thinking. The only comforting that helps, tools.
I don't smoke crack or cocaine or any. The anti anxiety pills the doc prescribe, I threw back at him. Useless and brings me down more he thought. So at present, I just cope.
When I see a schematic I get focused. Weird in some sort of way. And so then I read one of my GF's books. How to learn algebra in your sleep.
Fibonacci code and what not.
I read this and was more confused than before.
Title of book, Algebra in bed, how to sympathise Ten and Y to get more intelligent.
The beauty of this unproblematic book, was in essence the beginning paragraph. I don't recall I needed to read more. Here information technology is in french.
Ces deux conceptions opposees sont trop caricaturales. En effet, le plus irrectubile enemie des chiffres ne peut pas etre seduit par la beaute d'une chose aussi simple et fascinant que la suite de Fibonacci lorsqui'il observe la nature.
nickb2
Wrench. Diagnostic Tech.
- #10
Yeah, forgot most that link. Good info there as well. In that location is so much astonishing stuff on internet when a proper search is done. Makes a caput spin at the wealth of info ppl accept stored in the neuron difficult bulldoze.
nickb2
Wrench. Diagnostic Tech.
- #12
Since I am on the topic of how to better brainwash oneself, who actually invented the net??
I was 6 or seven yrs erstwhile and using a tandy computor. Never crossed my mind to enquire myself that question.
Ok, since that was an like shooting fish in a barrel question, Vint Cerf and Bob Kahn.
Who would always had imagined this would exist so huge.
Global network that started with a binary code.
Amazing.
nickb2
Wrench. Diagnostic Tech.
- #fourteen
Ok Dan, you won on that one.
I can't even brainstorm to depict the weird stuff you pulled out of your hat. Nasty is most peradventure the just style to describe this allure.
Tin can nosotros focus on the lower lesser left corner and actually inquire what that is?? Looks like engine oil with a straw.
Fifty-fifty simply thinking about what might exist in that container also brand me gag.
nickb2
Wrench. Diagnostic Tech.
- #xv
Dan, plz remind myself to never play poker with you. I would probably have the shorter hand.
Source: https://batauto.com/threads/r134a-a-c-retrofit-and-low-pressure-cycling-switch-adjustment.13959/
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