*2274306*
2274306
English
47
Malfunction
Possible cause
Action to be taken
The handwheel can be turned
without resistance.
The shear pin is broken.
▶
Replace the shear pin.
The diamond core bit can’t be
fitted into the chuck.
The core bit connection end or
chuck is dirty or damaged.
▶
Clean and grease the connec-
tion end and/or the chuck or
replace these parts.
Water escapes at the water
swivel or gear housing.
The water pressure is too high.
▶
Reduce the water pressure.
The rotary shaft seal is worn out.
▶
Replace the rotary shaft seal.
Water escapes from the
chuck during operation.
The diamond core bit isn’t securely
tightened in the chuck.
▶
Tighten the diamond core bit
securely.
▶
Remove the core bit. Rotate the
diamond core bit approx. 90°
about its own axis. Refit the
diamond core bit.
The core bit connection end /
chuck is dirty.
▶
Clean and grease the connec-
tion end and/or the chuck.
The seal at the chuck or at the
connection end is defective.
▶
Check the seal and replace it if
necessary.
No water is flowing.
The water channel is blocked.
▶
Increase the water pressure or
flush the water channel clear
from the opposite direction.
Clean the water inlet and outlet
aperture.
The drilling system has too
much play.
The diamond core bit isn’t securely
tightened in the chuck.
▶
Tighten the diamond core bit
securely.
▶
Remove the core bit. Rotate the
diamond core bit approx. 90°
about its own axis. Refit the
diamond core bit.
The core bit connection end /
chuck is defective.
▶
Check the connection end and
chuck and replace them if
necessary.
The connection between the dia-
mond core drilling machine and the
carriage or spacers is loose.
▶
Check the connection and,
if necessary, refasten the
diamond core drilling machine.
The carriage has too much play.
▶
Adjust the play between the rail
and carriage.
Screws / bolts on the drill stand are
loose.
▶
Check the security of screws
/ bolts on the drill stand and
tighten them if necessary.
The drill stand is inadequately fas-
tened.
▶
Fasten the drill stand more
securely.
9
Disposal
Most of the materials from which
Hilti
tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to
Hilti
for recycling. Ask
Hilti
Service or your Hilti representative
for further information.
▶
Do not dispose of power tools, electronic equipment or batteries as household waste!
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