Question regarding ARB compressors

Hi, I couldn't think of where else I should ask this so here goes:
I have a 1st gen tacome, I bought an ARB compressor (

$310 CKMA12 On-Board Air Compressor High Performance 12 Volt for Air Locker Differentials and Tire Inflation

CKMA12) to air my tires up when needed, don't have lockers and its mounted under my hood
1) It has a little air tank that gets pressurized and shuts off at whatever pressure, my question is, is it bad if I have it pressurized and then turn it off and go about my day or should I depressurize it every time I'm done using it, which would mean having to turn off the switch in the car, go back to it and let all the air out while the line is still attached
2) The thing gets pretty hot, does it have some sort of safety shut off? I feel like it should be fine to just fill up my 4 tires but last time I also had to fill up a friend's and I dont know how much is too much heat
Thanks!

 

Yes, it has a safety shutoff. If it gets too hot, it'll shut off automatically.

As far as depressurizing it, that's kind of up to you. You can if you want, but I don't see a point in doing that, it's meant to stay pressurized just like any other tank system. You may want to periodically drain it because condensation tends to build up, and you should drain that out. Hopefully you have a drain valve at the lowest point on your tank to do that...

How big is your tank? If all you're doing is filling up tires, there isn't much of a need for a tank, especially the smaller ones typical for on board air systems. I have a 125psi 5 gallon portable tank, and it will barely fill a single 32" tire form 18 to 35 psi.

 

Good to know about the safety switch, thanks!
And I don't have a separate tank, I just mean the tiny soda can sized thing that comes attached to the arb compressor

 

Oh I gotcha. Yeah, I guess technically that's a "tank" lol, but it holds just enough air to pressurize a locker, but that's prety much all it's good for.

I have a Viair portable compressor (400P) and that thing gets fairly warm, but it's never shut off, even inflating my buddy's 4 35's.

So if all you're doing is inflating tires with it, the little tank thing and the pressure switches are kinda useless. That does make it so you don't have to flip the switch on to inflate your tires, you just hook up the air chuck and start inflating and the pump will almost immediately turn on, and stay on until after you're done inflating the tire. So that's kinda handy, actually.