Renfert 29340000, Faq

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EN
FAQ - English
For information on operating elements, see Fig. 1 and Fig. 2 on page 2 of this document.
For chapter indications, refer to the complete instruction manual on the internet.
Trouble Possible Cause Corrective Action
When the device is
switched on, there is a
loud vibration noise for
approx. 8 seconds.
• The suction unit performs an auto-
matic filter cleaning sequence.
• This is functional and requires no inter -
vention.
During an interruption in
operation, an acoustic
signal occurs 3 times and
then the filter cleaning
function is carried out.
• After 16 hrs. constant operation (tur -
bine running time) without having
been switched off in between, the
filter cleaning function is carried out.
• Always switch appliances off at the on /
off switch at the end of the working day
(9, Fig. 1 ).
When the unit is switched
on, the display dust drawer
(24, Fig. 2 ) lights up and
an acoustic signal occurs
3 times.
• The time period for emptying the dust
drawer has elapsed and the dust
drawer has not yet been emptied.
• The emptying of the dust drawer has
not been confirmed.
• Empty the dust drawer and confirm by
pressing the key (25, Fig. 2 ). .
• Empty the dust drawer and confirm by
pressing the key (25, Fig. 2 ). .
Display error (26, Fig. 2 )
lights up and an acoustic
signal occurs 3 times.
• The automatic switch-on function
cannot be set. The difference be -
tween the chosen rpm at the hand -
piece and the stand-by current is too
low.
• The automatic switch-on function
cannot be set.
• Adjust the switch-on threshold to a higher
speed on the handpiece.
• Use the unit in continuous operating
mode.
The error message
(26, Fig. 2) blinks.
• The electronic device has become
too hot.
• Switch the device off and allow it to cool
down.
• Ensure sufficient cooling, e.g. with:
- Chapter 4.2 installation instructions.
- External ventilation (see chapter 4.6).
- Change fine filter.
The suction performance is
insufficient.
• The set suction performance is too
low.
• There is a blockage or leak in the
suction tube.
• Dust drawer is not airtight.
• The fine filter is full.
• Select higher suction level.
• Check suction tube.
• Please observe the points in chapter 4.4
• Check the dust drawer is in the correct
position (chapter 6.2).
• Switch the unit off and back on in order to
initiate the filter cleaning function.
• Change the fine filter (see chapter 6.3) (if
there is no improvement in suction perfor-
mance after the filter cleaning process).
Dust drawer is over full. • The time period for “empty dust draw -
er” has been set too high.
• Adjust to a lower time period (see chapter
6.2.1).
The signal to empty the
dust drawer shows even
though the dust drawer is
not yet full.
• The time period for “empty dust draw -
er” has been set too low.
• Adjust to a higher time period (see chap -
ter 6.2.1).
The electronic device con-
nected to the unit power
socket cannot be operated.
• Suction is not switched on. • Switch the suction on.
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