Hilti DD 200 / DD-HD 30 Manual De Usuario página 53

Transport the diamond core drilling machine, the drill stand and the core bit as separate units.
Use the wheel assembly (accessory) as an aid when transporting the equipment.
▶ Open the water flow regulator before putting the diamond core drilling machine into storage.
8 Troubleshooting
▶ If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
8.1 The diamond core drilling machine is not in working order
Malfunction
The service indicator shows
nothing.
The service indicator lights.
8.2 The diamond core drilling machine is in working order
Malfunction
The service indicator blinks.
The service indicator lights.
*2274306*
Possible cause
The PRCD isn't switched on.
Interruption in the electric supply.
Water in the motor.
The carbon brushes are worn out.
Possible cause
The motor has overheated.
The carbon brush wear limit has
almost been reached. The diamond
core drilling machine will continue
to run for a few hours until it shuts
down automatically.
The carbon brushes have been
changed and must be run in.
2274306
Action to be taken
▶ Check that the PRCD is
functioning and switch it on.
▶ Plug in another electric tool or
appliance and check whether it
works.
▶ Check the plug connections,
supply cord, power supply line
and main supply fuse.
▶ Allow the diamond core drilling
machine to dry out completely
in a warm, dry place.
▶ Replace the carbon brushes.
→ page 44
Action to be taken
▶ Wait a few minutes until the
motor has cooled down or
allow the diamond core drilling
machine to run under no load
in order to speed up the
cooling process. When normal
temperature is reached the
indication in the display goes
out and the diamond core
drilling machine activates the
restart interlock. Switch the
diamond core drilling machine
off and then on again.
▶ Have the carbon brushes
replaced at the next opportunity.
▶ Run in the carbon brushes by
letting the machine run under
no load for at least 1 minute
without interruption.
English 45