Completely unscrew the external safety bolts that block the fan and partially unscrew the internal bolts, if
you want to rotate the fan by a range of 60 ° in the current position. Completely unscrew the internal bolts
if you want to position the fan rotated of 90 ° from the standard position.
After positioning the fan according to the installation requirements, reposition the rear casing with the fan
on the machine.
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