Operation Manual

20
Troubleshooting
Handpiece vibrates, is very noisy
and/ or becomes warm in the
front part
Use of bent burs/ tools  Use a dif-
ferent bur/ tool to test this. The
bur/tool itself can be tested with the
hadewe Bur Shaft Tester (Art. No.
(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 (i.g. bur, capper and instru-
ment) manufacturers handling de-
tails.
Bur/tool can be inserted only with
difficulty, or not at all.
Use of bent burs/ tools  Use a dif-
ferent bur/ tool to test this. The
bur/tool itself can be tested with the
hadewe Bur Shaft Tester (Art. No.
4990) to see, if it is bent).
Chuck is dirty  Clean the chuck
according to the instructions in the
manual.
Bur does not clamp, or does not spin
Chuck is not tightened well  Tight-
en the chuck firmly according to the
instruction in the manual.
Knob of the handpiece can not be
moved easily
Chuck is dirty  Clean the chuck
according to the instructions in the
manual.
Rubber under the knob is tilted
 turn rubber about 90°
Unit does not work at all.
Check, if the main switch of the unit
is turned on at the side of the unit.
Footswitch 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 lev-
els at different sites of use
The sound level varies according to
the surroundings of the unit. If you
set up the unit directly 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
(appr. 1 sec) when turning unit on
In very rare cases this effect did
appear. It will not harm or damage
the device.
Suction function doesn't work
The suction motor will turn off automati-
cally if it overheats. Let the device
cool down before using it again.
Send the device off for inspection if
this occurs repeatedly.