American Sanders American 8 Drum Sanders - Manual (Page 14)

Page 14 Clarke ® American Sanders American 8 Floor Sander Operator's Manual
Sander Adjustment Procedures
DANGER: Electrocution could occur if maintenance and
repairs are performed on a unit that is not
properly disconnected from the power source.
Disconnect the power supply before attempting
any maintenance or service.
DANGER: Moving parts of this machine can cause serious
injury and/or damage. Keep hands, feet and
loose clothing away from all moving parts of the
sander.
Sanding Pressure
To adjust the sanding pressure follow this procedure:
1. Screw the sanding pressure knob down to increase the sanding
pressure when making the roughing in cut.
2. Screw the sanding pressure knob up to decrease the sanding
pressure when making the finishing cut.
Drum Rates
The machine can be operated at two rates. To change the speed of
the drum, follow this procedure:
1. Remove the belt cover.
2. Remove the fan belt.
3. Loosen the motor bolt.
4. Remove the hex nuts at the front of the motor.
5. Using the 5/32” Allen wrench, lower the motor locating screws.
6. Slide the motor forward.
7. For high drum rates, install drive belt in larger diameter of the
grooves available on the motor pulley and in the smaller diameter
of the two grooves available on the drum pulley. For lower rates,
install drive belt in smaller diameter of the grooves available on
the motor pulley and in the larger diameter of the two grooves
available on the drum pulley.
8. Tighten belt and secure motor to chassis.
9. Install the fan belt.
10. Install the belt guard.