30
FAN BELT REMOVAL AND REPLACEMENT
The Ecogrinder incorporates two drive fan belts (an inner and an outer) to power the fan
assembly. If the unit is not removing the dust, you will need to inspect the fan belts, fan
assembly, and dust bag to find the cause of the problem.
NOTE: This Ecogrinder makes use of a flat fan belt and pulley system that is self-centering
due to the barrel shape of the pulleys. If the fan belt is worn or dirty it can rotate off
the pulleys, this will be indicated by a loss of suction.
TESTING THE UNIT FOR FLOW
1. A simple test can be done to see if the fan unit is working correctly.
2. Disconnect the hose and back-flow preventer from the tool and stand the grinder up
so it is resting on the protective housing and the top handle. Point the fan exhaust in
a direction away from you or anyone else.
3. Turn the unit on and hold a piece of paper over the exhaust port. Paper should extend
and stand up straight when unit is turned on.
..
4. If the test indicates a weak or no flow condition, the fan belts, pulleys, and fan unit will
need to be checked to find the cause of the problem.
Figure-33
Figure-34
Fan Unit Test
OFF
ON
