And if I were to open a dive centre in Greece, I would first look at the electrical power availability (in 3 phase 380-400 volt 50Hz and the amps available on the breaker) at the building premise location and second the numbers of cylinders I am required to fill in a day (especially if I had the notion of even the hope of using a Coltri for this application) .
Third I would consider the location of the compressor air intake in relation to any other buildings works or roads nearby and finally any consideration if say its got a hotel next door and I'm up till three in the morning jamming tanks all night for the next days diving on a Coltri MCH 6 or alternativly looking for the parts I dropped on the floor off the Paramina or Alkin as it shakes itself to death after 400 hours running from new. Hope dies last. Just sayin LOL