12
GB
Troubleshooting
Problem
Possible cause
Solution
No function when ON/OFF Switch (4) is operated
No power
Check the cable, plug and power supply. If there is power being supplied
to the tool and no function, consult an authorised service technician
Defective ON/OFF Switch
Have the ON/OFF Switch replaced by an authorised GMC service centre
Motor suffers from cut-outs, loss of performance and produces sparks
and/or burning smells
Carbon brushes worn
Have the brushes replaced by an authorised GMC service centre
No sanding action when ON/OFF Switch (4) is operated, despite the
motor running
Mode Selector Switch (2) in between settings; gears not engaged
Ensure the Mode Selector Switch is turned all the way, and locked in one
of the two possible positions
Slow material removal
Sanding disc too fine or worn
Fit new sanding disc with coarser grit
Tool speed set too low
Increase tool speed
Wrong sanding mode selected
Change sanding mode as described in ‘Selecting sanding mode’
Scratches on workpiece after sanding
Sanding disc too coarse
Fit new sanding disc with finer grit
Not enough material removed
Continue sanding
Burn marks on workpiece
Sanding disc incompatible with material
Fit correct sanding disc
Tool speed set too high
Decrease tool speed
Too much pressure exerted on to the sander
Use less pressure whilst moving the machine
Wrong sanding mode selected
Change sanding mode as described in ‘Selecting sanding mode’
Excessive dust emission
Vacuum dust extraction system not connected, or extraction system
not switched on
Check connection of the vacuum hose, and ensure dust extraction system
is 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
Realign sanding disc; unblock dust extraction holes; consult an authorised
GMC service technician if problem persists
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Summary of Contents for GGOS150
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