Renfert 2921-0050, Manual

Page: 22 / 195

EN - 4 -
2.5 Automatic Mode
Automatic Mode, LED (C).
In automatic operation suction only starts when the
electric device connected is switched on responsible
is operated.
Selecting the automatic mode:
• Switch the
Silent TS
on (Fig. 2b)
- LED comes on
- The automatic mode has been selected.
or
- LED comes on
- Continuous operation has now been selected
and the extractor starts.
- Press the „D“ key
- LED comes on
- The automatic mode has been selected.
The extractor starts as soon as you begin operating
the dust-generating device.
After the dust-generating device is switched off, the
Silent TS continues to run for approx. 5 sec., then
stops automatically.
2.6 Adjusting the Automatic
Start Feature
In the automatic mode, the Silent TS is switched on
and off by an automatic start system.
This automatic start feature reacts to the current con-
sumed by an electronic equipment plugged into the
unit power outlet (N, Fig. 4).
If the current exceeds the activation threshold set at
the Silent TS , extraction starts. If the current drops
below this activation threshold, extraction stops.
The factory set parameter for the start-up
threshold enables the Silent TS to react
correctly for most electrical dental equim-
ent. Should this not be the case for a partic-
ular piece of equipment (eg. a handpiece),
then the start-up threshold can be adjusted
accordingly.
To change the activation threshold:
1. Switch Silent TS on.
2. Press and hold for 3 sec.;
- LED and flash.
- A “0” flashes on the display.
3. Switch electronic equipment off. For units
equipped with a standby mode, switch them to this
mode (e.g., for units equipped with handpieces,
only switch the controller on without activating the
handpiece).
4. Press the key.
- A “1” flashes on the display.
5. Switch the electrical appliance on, i.e. activate the
hand piece at the speed at which the
Silent TS
is
required to start up.
6. Press the key.
- An audible signal confirms that the adjustment
has been successfully performed.
The Silent TS returns to the operating mode (contin-
uous or automatic operation) which was set for the
automatic start function prior to the adjustment.
2.7 "Change Filter" - Indicator
LED (K) coming on indicates that either the dust bag
or the fine particle filter needs to be replaced.
An acoustic signal will also sound three times in this
case. In this case, follow the instructions given in the
“Cleaning / Maintenance” section to replace the dust
bag or the fine particle filter.
If the dust extractor continues to be used
after the “Change Filter” indicator goes on,
it will automatically stop once the airflow
drops below a predefined minimum value.
The LED display blinks (K).
The indicator can be turned off by switching
the Silent TS OFF and ON, thus restarting
extraction.
Operating the unit with a blocked filtration
system can result in hazards and damage to
the extractor. Filters must be replaced if the
extractor stops due to a full filter.
2.7.1 A
djust thE sEnsitivity of thE
„r
EplAcE
filtEr
“
indicAtor
.
It may be necessary to reduce responsivi-
ty if the suction support of the connected
appliance has a smaller diameter than the
Silent TS. (<< 32.5 mm).
The „Replace filter“ sensitivity can be adjusted within
limits.
To do this:
• Switch the Silent TS off;
• Switch the Silent TS on, and in doing so keep the
button firmly pressed until the display begins to
blink. (5=factory set parameter)
• Press button ,
- Reduce level of sensitivity,
-
„Change filter“ signal will appear later.
- ==> Dust bag will get very full
• Press button ,
- Increase level of sensitivity,
-
„Change filter“ signal appears more quickly.
- ==> Dust bag will get less full
• Press button ,
- Accoustic signal confirms successful
adjustment.
2.7.2 A
ctivAting
/
dEActivAting thE
„r
EplAcE
filtEr
“
indicAtor tonE
The „Replace filter“ indicator tone can be activated or
deactivated.
To do this:
• Switch the Silent off;
• While holding down the and keys, switch
the Silent back on and wait for the indicator tone
- Brief indicator tone: acoustic signal deactivated.
- Longer indicator tone: acoustic signal active.