OPERATION
Nobles
Tuff Scrub
3300 (09–9
21
TROUBLESHOOTING – Continued
PROBLEM
CAUSE
SOLUTION
Poor Scrubbing Performance
Scrubbing speed too fast
Scrub at a slower speed
Worn or improper brushes/pads
Replace or use proper brushes/pads
Debris caught in brushes/pads
Remove debris
Low battery charge
Charge batteries
Incorrect brush/pad pressure
Readjust brush/pad pressure
Poor water pickup
Recovery tank is full and float shut–off
screen has been activated
Empty recovery tank
Float shut–off screen inside recovery
tank is clogged
Remove screen and clean
Clogged squeegee
Unclog squeegee
Dirty squeegee blade
Clean squeegee blades, presweep
floor
Worn squeegee blades
Replace squeegee blades
Loose squeegee thumbscrews
Tighten thumbscrews
Vacuum hose connections are loose
or hose has a hole
Push hose cuffs firmly on connections.
Replace hose if damaged
Clogged vacuum hose
Remove clogged debris
Recovery tank inlet is obstructed
Empty recovery tank and tilt tank side-
ways to access inlet hole, remove ob-
struction
Worn tank lid gasket
Replace gasket
Loose drain hose plug
Tighten plug
Recovery tank lid not in place
Properly position lid
Loose vacuum motor
Contact Service Center
Battery charge level is low
Charge batteries. Do not run machine
when battery meter is in the red zone
Scrubbing speed too fast
Reduce scrubbing speed
Short run time
Batteries not fully charged
Charge batteries
Defective batteries
Replace battery
Batteries need maintenance
See BATTERY MAINTENANCE
Faulty charger
Repair or replace battery charger
Heavy brush/pad pressure
Reduce brush/pad pressure
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