Sterling 0, 882, 238 Replacing Motor Brushes, WEAR SAFETY GLASSES BEFORE performing this procedure

6-2 Replacing Motor Brushes

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.

WARNING! HAZARDOUS ELECTRICAL CURRENT PRESENT. Secure the machine BEFORE servicing!

WEAR SAFETY GLASSES BEFORE performing this procedure!

Use a stable platform if working above floor level.

Removing Old Motor Brushes

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.

Replacement and Reassembly

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

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