Mitsubishi Electric MDS-E Series Instruction Manual page 461

MDS-E/EH Series Instruction Manual
8 Maintenance
(2) Removal of the bellmouth inside the cooling fan unit
[1] Remove the bellmouth fixing screws (hexagon socket screws at four locations).
Bellmouth
(Note 1) Some spindle motors have the bellmouth fixing screws (hexagon socket screws) at two locations.
[2] Remove the bellmouth.
(Note 1) Perform it so as not to touch the edge part of the cooling fan unit or the end part of the bellmouth. Failure
to observe this may result in injury.
(Note 2) Do not let bellmouth fixing screws enter the cooling fan unit. Failure to observe this could lead to
breakage or faults of the cooling fan.
(3) Cleaning
[1] Check the situation of the cooling fan blade part and inside the case of the cooling fan unit by visual inspection.
Cooling fan blade part
IB-1501229-F
Cooling fan unit (before the bellmouth is removed)
Cooling fan unit (after the bellmouth is removed)
430
Hexagon socket screws
at four locations
Edge part of the
cooling fan unit
Cooling fan unit
Inside the case of
the cooling fan unit