Airbrush compressor info needed

My Paasche D500 compressor arrived today. Airbrush not delivered yet.
The compressor has a pressure regulator and moisture trap installed. No
tank. Do these compressors run all the time they are plugged in? Or do
they shut off when they reach pressure? If they run constantly, do they
just divert the extra air pressure if I am spraying at 30 pounds? I
have used canned air [Propel] in the past, so this is new to me.
Reply to
harrym
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I'm NOT familiar with that particular compressor, but they come in mainly three types.
1) Run ALL the time, controlled by a manual switch. Usually these will overheat after a while if allowed to run against a 'stall' condition (no air flow).
2) Run ALL the time, with air pressure controlled by a 'bleeder' valve (internal or external), really just a controlled 'leak' that lets some air flow all the time. The bigger the leak the lower the pressure. Note that this can control the pressure, but NOT 'regulate' it. Also helps reduce compressor overheating by allowing some air to pass all the time.
3) Compressor controlled by a presure switch, and turns itself on and off as needed. Works best with a pressure storage tank.
All compressors will work best with a small 'surge' tank in the line somewhere. This evens out the compressor's air pulsations. some compressors, including some Paasches, have a small integral surge tank in the compressor head casting.
All air compressors generate heat, both in the compressor and in the motor. Generally, they should not get so hot that you can't briefly touch them, but they will get more than warm.
Dan Mitchell ============
Reply to
Daniel A. Mitchell
Question for anyone with a Paasche D500 compressor. Is there any reason NOT to reverse the head on the air piston so the outlet hose points away from the unit instead of being right above the unit. I am asking because reversing it would allow the regulator/moisture trap to be vertical instead of horizontal. It seems to fit either way, so I have changed it from the direction it was when I got it.
Daniel A. Mitchell wrote:
Reply to
harrym

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