20
Messages
CHECK FILTER BAG
→
Change the filter bag (see page
166).
HS CHECK
→
No handpiece is connected or
the handpiece is faulty.
MAINTENANCE RECOMMENDED
→
After longer operation of the unit
(approx. 1 year, depending on how
much the unit is used), the ex-
change of moving parts, e.g. ball
bearings, washers and other parts
that will wear down in time will be-
come necessary. A maintenance by
an approved hadewe service agent
is recommended after a year.
The control system will determine
the period between the last mainte-
nance and shows a recommenda-
tion for a new service. Please con-
tact your distributor or an authorized
repair service, when this occurs.
In the display appears
“
Mainte-
nance recommended
”
. Press OK.
The display shows
“
Note off?
”
. If the
message should still appear, select
NO and the OK. If you do not want
this message to appear again dur-
ing the next 2 months, press YES
and then OK.
ERROR 1
→
The unit switches off when the
rotational speed of the handpiece
cannot be maintained.
ERROR 2
→
The unit switches off when the
speed of the suction motor cannot
be maintained.
ERROR 3
→
The unit switches off when if the
handpiece has been very heavily
used for a long period of time.