Motor Brush Check/Replacement; Fuse Replacement; Cleaning The Drive/Controller System - Cole-Parmer MICROPUMP 75211-20 Notice D'utilisation

Motor Brush Check/Replacement

Note: Brushes should be checked every 6 months or 2000 operating hours.
1. Place the OFF-ON switch in the OFF position.
2. Disconnect the AC line cord from the AC receptacle.
3. Disconnect the drive motor cable from the receptacle on the rear of the controller.
4. Carefully unscrew each brush holder on opposite sides of the motor. Withdraw the brush, and examine it for wear.
Note: Replace both brushes if either is less than 0.300 in long from base to point. The replacement brushes
(set of 2) is P/N 07520-04.
5. Screw brushes into brush holder on each side of motor.
6. Connect motor to rear panel connector on controller.
7. Connect controller to primary power source.

Fuse Replacement

1. Place the OFF-ON switch in the OFF position.
2. Disconnect the AC line cord from the rear of the unit.
3. Remove and check the fuse located on the rear panel below the AC power connector and replace if defective.
4. Reconnect AC line cord.
TYPICAL PUMP-TO-MOTOR CONFIGURATION

Cleaning the Drive/Controller System

Keep the Drive Motor housing and the Controller enclosure clean by using a mild detergent. Avoid immersion and
excess fluid.
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