Troubleshooting - GMC GSDS800 Manual

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 (4 & 6)
Chisel mode not breaking material
Drilling performance poor with masonry
Bits not fitting easily into SDS Plus Chuck (11)
Possible cause
Excessive pressure on tool at the point of breakthrough 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 (7) faulty
Faulty motor
Tool is overheating
Carbon brushes worn
Internal moving parts excessively worn
Material too dense or thick
Chisel tip worn
Hammer mode not selected
Drill bit tip worn or damaged
Very dense material
Debris and dirt getting into chuck
11
Solution
Reduce pressure before breakthrough
Ensure hammer mode is off to prevent damage to cutting
teeth and reduce possibility of jamming
Ensure the core drill max speed and diameter are compatible
with the drill
Regularly empty this 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 the fuse blows after replacing or the circuit
breaker trips 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 let it cool down to room temperature.
Inspect and clean the ventilation slots
Contact an authorised service centre to have the carbon
brushes replaced
Contact an authorised service centre
Drill not suitable for material or thickness
Replace chisel
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
(12) is used to prevent debris entering chuck
GB