Does the middle pressure gauge suppose to hold pressure after use? I see it held over night and don't see a bleeder valve for it like on the output side.
No its disconnected from any air source but the gauge reads 2 Mpa (275 psi) first stage. I thinking this is normal but I'm going to check with Altaros.
Altaros said that is normal depending on where the piston stops at shutoff kind of what I thought. Very nice unit other then the wall wart kind of sucks.
Yeah I thought the same about the wall plug. Having lived outside of the US for a couple years, Im understanding of this though. For those that don't own one, the plug is male EU, so Altaros supplies an adaptor to fit our US female wall outlets. The combination of the male EU + the adaptor for US is a bit unsightly. Also, initially I felt the power supply cord was pretty small gauge, but hasn't been a problem, I think the small gauge wire is fine b/c the unit isn't using much electricity, nearly all the "work" is done by the shop compressor air.