Makita DBM230 Operating Instructions Manual page 28

In case of malfunctions
In case of malfunctions switch the tool off and pull the mains plug.
Repairs on the electric parts of the tool may only be performed by
an electrical specialist.
Troubleshooting
Malfunction
Tool does not
operate
Motor runs- drill
bit does not turn
Drilling speed
decreases
Motor switches
off
Water leaks from
transmission
housing
Possible cause
Line voltage interrupted
Power cable or plug
defective
Switch defective
Transmission defective
Water pressure/water
throughput too high
Drill bit defective
Transmission defective
Drill bit polishes
Engine stops
Tool overheated
Overload protection
activated
Gland rings defective
Plug in other electric tool,
check function
Have them checked by
specialist, replace if needed.
Have it checked by specialist,
replace if needed
Have the tool repaired by an
authorized service point
Regulate water throughput
Check drill bit for damages,
exchange if needed
Have the tool repaired by an
authorized service point
Sharpen drill bit on oilstone with
water flushing running
Hold tool in a straight position
Disengage tool and put it back
to operations by activiting the
switch
Have the tool repaired by an
authorized service point
27
Repair