GB
Troubleshooting
Problem
While core drilling the core
drill has locked/jammed in the
material
Drill is uncomfortable to use due
to vibration
Tool will not start
Slow rotation speed
Slow rotation speed or no
rotation plus possible visible
sparking from motor vents
Vibration or abnormal noise
Chisel mode not breaking
material
Chisel tip is rotating
Drilling performance poor with
masonry
Bits not fitting easily into SDS
Plus Chuck (1)
10 10
Possible cause
Excessive pressure on tool at the point of break-
through in the material
Hammer mode is on
Core drill is not suitable for drill
Large build-up of debris inside core drill while
operating
Tool is being used for too long
No power, fuse blown or circuit breaker tripped
Power cable damaged
On/off trigger switch faulty
Faulty motor
Tool is overheating
Carbon brushes worn
Gearbox low on grease
Internal moving parts excessively worn
Material too dense or thick
Chisel tip worn
Tool incorrectly set
Hammer mode not selected
Drill bit tip worn or damaged
Very dense material
Debris and dirt getting into chuck
Solution
Reduce pressure before breakthrough
Ensure hammer mode is off to prevent damage to cutting teeth and to
reduce possibility of jamming
Ensure the core drill max speed and diameter are compatible with the
drill
Regularly empty the build-up of debris to ensure safe operation
Take frequent breaks and read the sections in this manual regarding
vibration
Check and replace fuse if necessary or reset circuit breaker. In the
event of the fuse blowing after replacing, or the circuit breaker tripping
again, immediately contact an authorised service centre
Contact an authorised service centre
Contact an authorised service centre
Contact an authorised service centre
Switch off the tool and allow it to cool down to room temperature.
Inspect and clean the ventilation slots
Contact an authorised service centre to have the carbon brushes
replaced
Add or replace grease
Contact an authorised service centre
Drill not suitable for material or thickness
Replace chisel
Select roto-stop mode
Enable hammer mode
Replace SDS Plus drill bit
Drilling speed will be slow in such material. A smaller pilot drill can be
drilled first to speed up the drilling process
Clean out chuck by facing downwards and vacuuming while operating
the chuck as if to insert bits. Ensure dust guard is used to prevent
debris entering chuck