Sterling 0 User Manual

Note:  Make sure that you replace motor brushes before the brush 

shunt touches the commutator. Replacements and spares 
are available from the manufacturer. 

 

Powder hopper loader vacuum motor brushes require periodic 
replacement. Maintain a supply of motor brushes, and establish a 
preventive maintenance program to reduce downtime. 

 

Make sure that you properly seat replacement brushes to 
achieve maximum service life. Unseated brushes may fail 
prematurely and increase your maintenance workload. 

 

 

 

1.   If you haven’t already done so, disconnect the hopper 
loader from the electrical supply! 

2.  Disconnect motor and blowback connection receptacles at 
the control enclosure. 

3.  Release the latches that secure the cover assembly. Lift off 
the cover assembly by the edges. 

Remove the motor from the cover assembly by carefully 
releasing the springs. Springs are under tension, so be very 
careful! 

5.  Remove the brush end cap, then the two brush clips from 
the brush holder. 

6.  Remove the two brushes from the brush holder, and replace 
with new brushes. 

 

1.  Re-attach the brush clips and the end cap after you make 
sure that the brush assembly is properly seated.