Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control - Manual (Page 365)

Component Definition and Maintenance 6-61
7000 “A” Frame 7000A-UM150F-EN-P –June 2013
Impeller Removal from Motor Shaft
The fan impeller is held onto the motor shaft with a split tapered bushing.
This bushing is positioned on the motor shaft and through the center of the
impeller. Two capscrews, when tightened to 10.2 N-m (7.5 ft-lbs.), lock
the bushing onto the motor shaft and the impeller to the bushing.
Safety notes
The impeller is fragile. Do not allow the impeller to support the weight of
the motor.
If vertical, the impeller and bushing may fall when loosening capscrews.
Physical injury or component damage may result.
A
B
C D E
A – Taper surfaces
B – Capscrews
C – Split in Taper Bushing
D – Key
E – Threaded Hole for Separating Tapers
DO NOT LUBRICATE
CAPSCREWS, BORE,
OR BUSHING BARREL
Figure 6.50 – Cutaway View of Fan Impeller and Bushing
Impeller Maintenance
(DC Link / Fan Section)