MASTERFLEX L/S Variable-Speed Modular Drives Operating Manual
3-1
Masterflex
Section 3
Maintenance
NOTE:
Brushes should be checked every 6 months or 2000 operating
hours.
1. Place the FWD-OFF-REV 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 brush is less than 0.300" long from
base to point.
5. Screw brushes into brush holder on each side of motor.
6. Connect motor to rear panel connector on controller.
7
Connect AC line cord to AC receptacle.
NOTE:
115V units have an internal fuse. Unit must be returned for
servicing.
1. On 230V units, place the FWD-OFF-REV 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.
Motor Brush Check/
Replacement
Fuse Replacement
