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#21
They must be kidding mate I have never heard of such nonsense. Personally I would just go ahead and get yourself an anti static brush or even one of the cheap hogs hair brushes I use and with a can of compressed air just clean what you can.They said , we used to do that kind of cleaning with a blower and the authorities here does not allow it anymore...
So, they can't do it.
Now if you have access to an ordinary hair dryer and if it will blow cold then it can be used to blow out the dust
Now keep in mind that using the compressed air you need to be careful with any fans because it is possible to spin them faster than they were designed to go and maybe even wreck the bearing notwithstanding that spinning the fans has the potential of inducing unwanted voltages into the system and that is not good.