Yong heng Temperature

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Okay I seem to notice a whole wide range of temperatures. I also noticed that the temperature gauge is not installed and neither is the probe. The instructions do not give you a picture for placement of the temperature probe where is everyone putting their probe? 

Is everyone putting it in a different location? This maybe the reason there are so many differences ?

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Allen
 
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Okay I seem to notice a whole wide range of temperatures. I also noticed that the temperature gauge is not installed and neither is the probe. The instructions do not give you a picture for placement of the temperature probe where is everyone putting their probe? 

Is everyone putting it in a different location? This maybe the reason there are so many differences ?

Allen
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Im assuming that it's in the water jacket. Right now it's about 81f in my house.
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Ah, I wonder what pressures everyone is going to! I'm sure that has a large affect on how much work the compressor is doing! Plus if one were to pump a large tank only at high pressures that would cause a lot of heat vs. a bottle on a airgun where it only spends minutes at the higher pressures.



Allen
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I was told it can fill a tank but there would be a lot of cooling breaks in between. I was also told it may struggle at the upper end of the fill.
 
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Well I have a fill tank already and my hand pumps can fill the smaller airgun tanks but the 700cc air gun tanks and the big fill tank takes a bit longer. If I'm going to get a yong heng compressor I think I will be using it only for the filling the fill tanks from 3000 to 4500 and use the hand pumps when convenient.



Allen
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I seen a Y.H. on fleabay for $248 and change with free shipping, supposedly more than one in stock. I didn't really look at the ad well, so not sure if it a legit Y.H.
 
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@thereprobate just try to concentrate as much air as possible to the back of the YH where it’s fan is and that should help. I k know what you mean about the wind - here in central Texas we’ve had three weeks or so of 15-20 mph wind gusting higher for the last 3 weeks or so. What part of Nebraska?
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@mikeallen south central part between kearney and grand island. wind has been going a solid 2 weeks and looks to keep it up for another 10 days or more. i think someone fell asleep with their forehead on the wrong button because i can't remember in all my 49 an april so windy for so long.

@imadman thanks for the additional info, i appreciate it. looking at Mike's setup from above i've gotten a cart and i'm going to do a similar get up. a little duct fan like his pictured shouldn't cost too much and it will give me something to do to stay occupied while i'm waiting for the wind to knock it the hell off
 
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The temperature gauge of my Yong Heng failed once already. It stopped going up or down at all. So I bought several more. But I still don't totally trust it.

I added a radiator and two fans to my Yong Heng. They sit on top of a 4.5 gallon drywall bucket that probably has about 3 gallons of distilled water and a pint of water wetter in it. The bucket is sealed. I don't change the water. I used ice and frequent water changes several times but I think my radiator does a better job of keeping the temperature down. I normally pump my 45 minute SCBA tank from about 3000 psi to about 4000 psi, sometimes a little more. It takes about 20 minutes. Temperature stays below 60 C in the winter, will go a little higher this summer. I may try a fan on the YH, that seems like a reasonable way to add a little more cooling.

Tap water and softened well water have minerals and chemicals in it that distilled water does not. But distilled water still needs something to slow down corrosion, that is one purpose of the water wetter I use. A little antifreeze should also work.

I shut my YH down when I get to 4000 or so on the tank unless the YH indicates the temperature is going over 65 degrees C. Hasn't happened with the radiator.

I also shut down after my YH has run 15-20 minutes. I trust time as much or more than I trust the YH gauge. Filling a gun should never be close to this - they do not have 66 cubic foot capacity.
 
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Just picked up a Scott 60min. My YH is about 3wo. Filled 2 30min from empty, topped it from 3200-4400 probably 10 times. On the 30min tanks, temp never went above 50. But the 60min tank is putting the YH to work, I started with a 10min or 400ps, bleeding in between 200psi or a few minutes, ten got into the 55, ran the 10min intervals 3 times. After 3600 psi, been doing a 5min intervals or 200psi, temp hovered around 56-60. I’m on the last 200psi now. Also letting the YH rest 5-10min in between. I’m really amazed with the YH so far.
 
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Well guys ice/no ice, fan/no fan, distilled water/tap water, water wetter, anti-freeze, ice and fan and water wetter... whatever water we want we wind up winding down with way short duty cycles. I can get a Kral PB Silent from 100 bar to 200 and from starting temp of about 18 to 60. That spread of temp will get me there. That spread of temp will not take my Priest 2 from 100 bar to 300, my Blitz from 100 bar to 250, or my Impact mkii from 125 to 250. Seems like it will only go for about that long before having to be shut down. It never stabilizes at a given temp settling down for a longer duty cycle... my duty cycle is from whatever temp it starts, watch the temp the whole time as it goes up rapidly, shut it down when it approaches 60 or 65, allow it to cool off for 15 minutes, start it up again for another 2-3 (maybe 4) minute duty cycle and shut it down again. @jimd i'd be interested in seeing your radiator setup. I think I better get a backup compressor... walmart.com here i come - at least they'll back them should they fail. 
 
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TheReprobate,

I’m not sure what’s going on with your YH, but you seem to have more problems with heat than most. My set-up above, which I think is kinda extreme, would stabilize below 40 degrees, all the way to 4300 psi. What oil are you using? I’m wondering why such excessive heat compared to most…as I’m sure you are too. 
 
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@Scotty1 indeed I am wondering. It never settles down at any temperature it just starts to heat up as its working and keeps right on going. I have to monitor it the whole time I'm filling and pop the air bleed screws and shut it down after it reaches about 60 or 65. I'm using Harbor Freight compressor oil and there has never been anything in it but that. Even with adding a fan blowing directly on it I cannot say that I have an appreciable improvement in performance. The coolant tubes are clear of obstruction and I seem to get pretty good flow through the block. I just thought this was normal until I landed on this discussion so I never brought it up to the seller or bothered to reach out to the manufacturer. And now I'm beyond the time in which it would do any good to do so. So I think the obvious conclusion is that there is something wrong with this unit. I got it from eBay so I'm stuck. I'll get a back-up from walmart.com that way I can contact them if there is a problem and they at least will stand behind their guarantees. I'd still be interested in the radiator setup that @jimd mentioned but I think the writing is on the wall and I need to plan for a backup... a radiator may prolong its life some but I think it's clear that there is something wrong and this thing will eventually grenade itself. 
 
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Because everyone seems to have so much fun with the YH, I have to say I've been itching to try one. I just got mine in the last week or so and not done much with it. 

What I did do after initial setup was to run the motor unloaded and just monitor the temperature. First time starting the motor would buz before actually spinning. I started the unit unloaded several times so if there was any binding it could break in a bit. I did that and let the temp get up and each time the Temps would stabilize a little lower temperature. First time it went up fast to 60 c within about 2 minutes, I would shut down, let it cool and start it back up, then it would climb a little slower. So far it has got to the point where it would hover about 61 c, it has gone up to 62 and actually went back down to 59 and stayed around that temp. I did a couple quick fills with my 700cc impact and with my 210cc uragan. Both filled quickly well less than 5 minutes. Almost too fast. I want to fill my fill tank but have not got the hang of opening and closing the valves fast enough before the autostop kicks in. Hopefully when I get the large volume water trap it will be easier. From what I gather it's best to run ice water and a good pump to keep temps down. I believe a good oil will also keep the friction (and thus heat) down. Too bad the water jacket does not extend to the lower cylinder. 

I have to say I'm a bit lazy and don't like to fill a 5 gallon bucket or even put blocks of ice in. I don't even like putting the reusable blue ice blocks back into the frig when I'm done with them. So my work involves me lifting the unit (OMG this thing is heavy!) to the side of the swimming pool and sticking the suction cups of the waterpump down on one of the tiles. It has plenty of cold water and if this keeps the Temps down ill be okay with that.

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I do plan on replacing the husky synthetic oil with the Mobil Rarus 827 (?) That I ordered off of ebay in hopes to control the heat output more. That should come in some time this next week. I'll update if gives any improvements.



Allen
 
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I wonder if you’re getting detonation from that Harbor Freight oil, and if that is adding to the heat load. 
I just looked for the sds for that oil, and it doesn’t seem to be available. If it is petroleum based, it will have a flashpoint that is too low for this use. Maybe try a proper oil…or at least a full synthetic oil and see if that helps. 
 
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Has anyone compared the temps on the unit via a handheld temp gun while running? My unit is at 29.8-31 celsius, just sitting and not running. I've only filled guns only, taking it from 2000psi to 3000psi. It reaches 58-62 degrees celsius, during that time period. I got my unit 2nd hand so just making observations compared to what others have been getting. The oil was clean on my very first fill with it. I'm assuming it was some type of ISO 46 oil. After filling a gun from 2000psi to 3000psi the oil was dark. I pulled the crankcase cover off and completely drained the oil. As others have mentioned, the bolt for the drain has some type of sealant on it, which stays in the threaded portion of the case after removing the bolt. So if you are trying to drain the unit and barely any oil comes out, this is more than likely the cause. So the only ISO 100 compressor oil I could find locally was Amsoil. I filled it just above the red dot. I filled 2 guns from 2000psi to 3000psi and the oil is still very clean. Temps were pretty much the same though, even though I used maybe 3 gallons of water and 3/4 gallon block of ice. Think I'm may borrow a temp gun and compare temps on my next fill.
 
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IMADMAN,

You make a great point, I seriously doubt these temp gauges could be considered well calibrated. If the whole compressor cost around $300, them temperature gauge can’t be more than a dollar or two, maybe less. I suppose if it reads close to ambient temps when it’s been at rest for some time, that could at least give you a bit of info. 
 
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