So the system prety much went live at the beginning of the month and has been running without a glitch ever since. Some times it gets turned off at night other times I end up just leaving it on (forget to turn it off).

Today we had our first power outage, no warning and everything just went off. I had actually had the compressor in the off mode for the last 3 days as had not been using it and had forgotten about it.
Power came back on and as everything in the workshop slowly started up the compressor kicked in replenishing the pressure back up to its set levels :)