GMC GGOS150 Traduction Des Instructions Originales page 12

Troubleshooting
Problem
No function when ON/OFF Switch (4) is operated
Motor suffers from cut-outs, loss of performance and produces sparks
and/or burning smells
No sanding action when ON/OFF Switch (4) is operated, despite the
motor running
GB
Slow material removal
Scratches on workpiece after sanding
Burn marks on workpiece
Excessive dust emission
Possible cause
No power
Defective ON/OFF Switch
Carbon brushes worn
Mode Selector Switch (2) in between settings; gears not engaged
Sanding disc too fine or worn
Tool speed set too low
Wrong sanding mode selected
Sanding disc too coarse
Not enough material removed
Sanding disc incompatible with material
Tool speed set too high
Too much pressure exerted on to the sander
Wrong sanding mode selected
Vacuum dust extraction system not connected, or extraction system
not switched on
Dust extraction not working; sanding disc not aligned with dust
extraction holes in the Hook and Loop Backing Pad (8); extraction
holes blocked
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Solution
Check the cable, plug and power supply. If there is power being supplied
to the tool and no function, consult an authorised service technician
Have the ON/OFF Switch replaced by an authorised GMC service centre
Have the brushes replaced by an authorised GMC service centre
Ensure the Mode Selector Switch is turned all the way, and locked in one
of the two possible positions
Fit new sanding disc with coarser grit
Increase tool speed
Change sanding mode as described in 'Selecting sanding mode'
Fit new sanding disc with finer grit
Continue sanding
Fit correct sanding disc
Decrease tool speed
Use less pressure whilst moving the machine
Change sanding mode as described in 'Selecting sanding mode'
Check connection of the vacuum hose, and ensure dust extraction system
is switched on
Realign sanding disc; unblock dust extraction holes; consult an authorised
GMC service technician if problem persists