This is pretty simple and werqs for me.
https://www.youtube.com/watch?v=_grx5p_R8D4&ab_channel=VasilisA
Don't forget the rest of the stuff though.
I have two YH compressors bought the second as a backup for the first as I fergot to turn on the coolant pump several times and overheated it until it smoked. I added a switched outlet to the system so it turns the pump on before the compressor will power up to keep me from doing that from now on. The second one, my back up unit, died in about two months bad QC from the factory. Cost me a $12 part and an hour to repair it. The #1 unit that I was worried about just kept on filling my guns and tanks till I got #2 repaired and retired it.
I do not fill past 4200psi as when I do, all too often, I blow a burst disc.
Keep them cool, the oil topped off and don't fill past their spec which I think is 4350psi, I think a little less is better than the max, and the Yong Heng should last for years unless you get a bad one.
The "simple version" least expensive does not have a water separator you need one.
The "auto stop" version shuts off near 3000psi.
So you likely want the "Hardcover" or 'Set pressure' versions.
The temperature sensor only measures head temperature so running it much over 20-30 minutes can overheat the motor and other parts even if ice is used in the coolant. Ice, or a container of it, in the coolant is a good idea especially if you do not use the full five gallons of water as suggested in the manual.
Keep your water supply level with the compressor to be kind to the pump and assure a good supply of coolant goes through the compressor.
Keep your moisture filters, guns and tanks being filled above the compressor to help keep moisture out of them.
Purge the system of moisture for a couple of seconds every five minutes.
Change out your small YH filter every twenty minutes and set the old one out to dry and use it later.
Add a better filter to be sure more moisture is removed from the system. Many of us use this Tuxing three media filter although, if you feel the need, you can change media types at any time.
https://www.aliexpress.com/item/32891898253.html Bleed the pressure before you turn the unit off and let it run a few seconds to get the better part of the moisture out of the system. I have found that I blow less burst discs as well if I do this religiously.
Let the coolant pump run for a few minutes after shutdown to cool things off.
