24
Troubleshooting
Handpiece vibrates, is very noisy
or becomes warm in the front
part.
Use of bent burs/tools.
→
Use a
different bur/tool to test this. The
bur/tool itself can be tested with
the hadewe Bur Shaft Tester
(art. 4990) to see if it is bent.
Maximum allowed speed of the
tool was exceeded, which
caused a stronger vibration.
→
Pay attention to the tool (e.g.
bur, capper and instrument)
manufacturers handling details.
Bur/tool can be inserted only
with difficulty or not at all.
Use of bent burs/tools.
→
Use a
different bur/tool to test this. The
bur/tool itself can be tested with
the hadewe Bur Shaft Tester
(art. 4990) to see if it is bent.
Chuck is dirty.
→
Clean the
chuck according to the instruc-
tions in the manual.
Bur does not clamp or does not
spin.
Chuck is not tightened well.
→
Tighten the chuck firmly accord-
ing to the instruction in the man-
ual.
Knob of the handpiece cannot be
moved easily.
Chuck is dirty.
→
Clean the
chuck according to the instruc-
tions in the manual.
Unit does not work at all.
Check, if the main switch of the
unit is turned on at the side of
the unit.
Foot switch is used constantly or
faulty.
→
Pull out the socket of
the foot switch to see if this is
the cause.
Pull out the mains plug to reset
the device.
The unit shows different sound
levels at different sites of use.
The sound level varies accord-
ing to the surroundings of the
unit. If you set up the unit direct-
ly in front of a wall, the sound is
reflected stronger, as if it would,
while standing further away from
a wall.
Handpiece motor stutters shortly
(approx. 1 sec) when turning unit
on.
In very rare cases this effect did
appear. It will not harm or dam-
age the device.
Suction function doesn't work.
The suction motor will turn off
automatically if it overheats. Let
the device cool down before us-
ing it again. Send the device off
for inspection if this occurs re-
peatedly.
For descriptions of the messages
on the device display, see page
20.
