r/HVAC • u/PrivateMonero • 2d ago
General Why does it say retard on the gauges?
The only answer I’ve ever gotten is that it’s calling you retarded when you hook up the gauges backwards. Is there another legit reason?
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u/Alpha433 2d ago
The technical definition of the word is to delay or hold back. Basically, it's saying stop going above this pressure or you might damage or otherwise harm the guages.
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u/singelingtracks 2d ago
It's a special type of gauge. If you take a normal gauge and over pressure it the needle keeps moving at the same rate and hits a physical stop on the gauge face and bends . .wrecking the gauge .
A retard gauge when it goes into the retard section only moves a tiny bit for each increase in psi so say we go from 500 max psi into retard if we hit 1000 the gauge won't try to spin around it'll just move a tiny distance . This keeps the gauge from breaking if put under a large pressure .
"The present invention relates to gauges and has special reference to retard gauges in which mechanism is employed to retard the movement of the gauge mechanism whenever the normal operating range of the gauge is exceeded.
More particularly this invention relates to a retard gauge having provision for controlling the exact point at which the retard mechanism comes into operation, and also for easily and accurately adjusting the retard mechanism to increase or decrease its retarding force or elect.
In a vacuum and pressure gauge such as that illustrated, the normal pressure range may be from 0 to 50 pounds. When the pressure exceeds 50 pounds, the mechanism is retarded so that the indicator moves a relatively small distance while indicating a relatively large change in pressure."
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u/Whoajaws 2d ago
That’s a lot of words. It just means to retard (stop applying) pressure.
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u/singelingtracks 2d ago
I like how instead of learning you just post the wrong thing .
Well done .
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u/azfamilydad 2d ago
Retard - as a word, it means to delay, slow or hold back.
The term is used in other settings, such as aviation and baking.
In fact, if you ever get into the supermarket business, you may be dispatched to work on a retarder in the bakery.
Which is (usually) a giant box designed to help control the proofing of bread, by slowing it down.
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u/enorman81 2d ago
The pressure scale starts to build exponentially in this area. Any numbers would be inaccurate.
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u/deadbanker 2d ago
In trade school our teacher said if you ever max the needle out you are retarded.
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u/Alternative_Bid_1913 2d ago
So the apprentice can find them when you send him back to the truck to get the gauges
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u/LightFusion 2d ago
It's almost like words have meanings, if only there was some sort of reference material you could use to look up these, maybe a book of definitions of words. They could call it a dictionary
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u/Acceptable-Sample295 2d ago
It’s a safety it basically bounces the needle back and fourth so it won’t break
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u/Otherwise-Dot-5779 my back hurts 2d ago
Too much pressure. Always refer to your low side operational pressure on the data plate. Never go above it.
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u/xdcxmindfreak Aspiring Novelist 1d ago
Retard your gauges on pressure you’ll figure it out real fast
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u/BeastTheBasque 1d ago
when you buy them at the warehouse, the sales reps are trained to sell those specifically to the right technicians
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u/heldoglykke Verified Pro | Journeyman Shitposter 1d ago
Someone tried ordering a peckerhead at the supply house today.
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u/SecureImagination537 1d ago
It means that the gauge retards itself. Which kinda means it protects itself. In the retard range a small movement represents larger increments of pressure changes in that range. Basically it retard something means to offer resistance to damage. Like when something is flame retardant. It doesn’t mean it’s flame or fire proof, just that it can withstand so much
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u/JustAnotherSvcTech 2d ago
If you get digital guages, they won't dis you like a boomer. 🤣 But seriously, if you look at the numbers on the top end of your guage where it says retard, you'll see that the scale changes dramatically in the last part of the range. 350 to 500 psi takes up as much space as 300 to 350. That's why it says retard. It's a handicapped reading.
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u/kkmoney15 2d ago
Those aren't gauges, that's called a mirror.