Quote Originally Posted by routercnc View Post
Hi Jazz,
OK, thanks for that. I can make the fan quieter with a bit of acoustic treatment.
Why bother can't hear the bloody thing when machines cutting and when not using turn it off.?

Personally I would be getting onto them and insisting on the 2.2Kw just for the fact it gives larger cutter choice and if replacement was faulty then I'd be asking for my money refunded and buying else where. You have done nothing wrong running 1.5Kw with a 2.2Kw VFD provided you used the correct parameters for the spindle and infact your running the VFD well within it's capabiltys so better for them as it's less likely to be stressed.!