*2274306*
2274306
English
45
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
Possible cause
Action to be taken
The service indicator shows
nothing.
The PRCD isn’t switched on.
▶
Check that the PRCD is
functioning and switch it on.
Interruption in the electric supply.
▶
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.
Water in the motor.
▶
Allow the diamond core drilling
machine to dry out completely
in a warm, dry place.
The service indicator lights.
The carbon brushes are worn out.
▶
Replace the carbon brushes.
8.2
The diamond core drilling machine is in working order
Malfunction
Possible cause
Action to be taken
The service indicator blinks.
The motor has overheated.
▶
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.
The service indicator lights.
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.
▶
Have the carbon brushes
replaced at the next opportunity.
The carbon brushes have been
changed and must be run in.
▶
Run in the carbon brushes by
letting the machine run under
no load for at least 1 minute
without interruption.
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