I used to borrow a friends silent compressor, very similar size to that one, for displaying my engines at shows. An ex pub cellar compressor.
Invariably it stood on grass at most of them (steam rallies), and I used to run it 7 hours a day, none stop for up to 3 days. Never a missed beat. Only problem was the small tank used to be half full of water at the end of each days running because of the damp environment it was in. I knew it was time to empty the tank when the models started to run with more water than air in them.
I did that for about 10 years, and as far as I know, the compressor is still running OK today.
I honestly don't think you need to worry, unless you are doing that sort of running continuously.
Bogs