Pump Drives Operating Manual 3-1Cole-Parmer
Section 3 Maintenance
Motor Brush
Check/Replacement
WARNING: Remove power from the pump before attempting any
maintenance.
1. Place the ON/OFF SWITCH in the off position.
2. Disconnect the AC power input line cord from the AC receptacle.
3. Remove the screws from each side of the housing and lift off the
housing.
4. Carefully unscrew each brush cap. Withdraw the brush, and examine it
for wear.
NOTE:
Replace both brushes, if either brush is less than 7.6 mm (0.300 in)
long from base to point.
5. Insert brushes and install brush cap.
6. Install housing and secure with the screws on each side.
7. Connect the AC power input line cord to the AC receptacle.
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