8
GB
Problem
Possible cause
Solution
No function when On/Off Switch
(1) is operated
No power
Check power supply
Defective On/Off Switch
Have the On/Off Switch replaced by an authorised Silverline service
centre
Motor defective
Return the tool to an authorised Silverline service centre for repair
Motor turns when On/Off Switch
(1) is operated, but grinding
wheel does not spin
Grinding wheel fitted incorrectly
Refer to ‘Replacing the grinding wheel’
Spindle or motor defective
Return the tool to an authorised Silverline service centre for repair
Motor switches off whilst in use
Duty cycle exceeded. Thermal cut-out device in
operation to protect the motor
Turn off the tool and allow to fully cool. Follow instructions in ‘Duty
Cycle’
Tip of drill bit turns blue during
sharpening
Overheating
Reduce the amount of pressure and sharpening time
Cool bit in water between sharpening. Before continuing,
Make sure bit is completely dry.
One cutting edge is longer than
the other, and the point is not
centred
Uneven sharpening
To fix an unevenly sharpened bit, reinsert and sharpen the shorter side
for a little longer
To prevent this from happening sharpen both sides for the same
amount of time, applying the same amount of downward pressure
whilst sharpening
Unsatisfactory sharpening result
Grinding wheel worn
Replace grinding wheel
Drill bit type or material unsuitable for sharpening
with this device
Use alternative sharpening methods
Troubleshooting
127569_Z1MANPRO1.indd 8
24/03/2014 12:14