Ok, so I just received my 80W machine this week, and was having the electrician come out and install the 220V line to supply it. However, they sent me 220V/50hz machine,as well as the water pump/air pump and exhaust fan ,all of which are 220V/50hz ,even though I asked for 60Hz . Im already having the 220V plugs installed, but Im concerned about the 50 vs 60 Hz ,especially on the laser machine..is this going to be an issue? if so, is there anything that can be done about it?