1. Check that all bolts and screws have been tightened
2. Run in the fan and the bearings for 24 hours. Most noises disappear after this time
Modified on: Mon, 22 Dec, 2014 at 9:02 PM
1. Check that all bolts and screws have been tightened
2. Run in the fan and the bearings for 24 hours. Most noises disappear after this time
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