Renfert Silent compact Guide De Démarrage page 12

Operation
Switching the Unit On
EN
The extractor is switched ON and OFF at the On / Off switch (9).
When the unit is switched on:
♦ All 4 displays light up (the display carries out a functional control),
♦ The suction unit performs an automatic filter cleaning sequence (for approx. 8 seconds, loud vibrating
noise).
Select Operating Mode: automatic / continuous operating mode
• Automatic operating mode (20):
In order to function, the extraction unit is dependent on an electronic device connected to the power
socket (12).
• Continuous operating mode (22):
The extraction unit runs continuously.
⇒ Press the operating mode key (21).
♦ To change the operating mode.
If the suction to a connected electrical appliance (e.g. a handpiece) does not react as required
(e.g. does not activate, even though a connected device is in operation) then the switch-on thresh-
old for automatic operation must be adjusted. This is also possible whilst the suction is on.
Suction Level
⇒ Press the key suction level (23).
♦ Change between the two suction levels.
The extraction unit always starts with the last set suction level.
Operation with the SILENT flow sensor
If the extraction unit is operated in combination with a flow rate monitoring unit such as the SILENT flow
sensor, the following must be observed:
► If the flow rate is less than the defined threshold value for a certain period, this is detected by the
SILENT flow sensor, the corresponding indicator begins to flash, and a warning tone is output
every 30 seconds.
If the flow rate is too low at the suction point being monitored, safe operation is no longer guaran-
teed and the level of exposure to dust can be harmful to health!
In this case, the following measures must be taken:
⇒ Stop working at all suction points of the affected extraction unit. This applies to the individual suction
channels of any multi-workbench extraction unit as well as to all suction points operated via a Y-junction
or via extractor switches.
⇒ Determine why the flow rate is too low and resolve the issue.
Suction level is too low
Filter blockage
Cleaning the filter does not result in the expected
improvement.
Blockage in the suction point (suction mouth)
Blockage in the suction line
Leakage in the section of the suction line between
the SILENT flow sensor and the extraction unit.
Determining the cause and measures can be carried out in the order shown.
After every measure, you should switch on the extraction unit again and check whether the minimum flow
rate is again exceeded so that correct operation is possible again.
⇒ Work should only resume after the fault has been rectified and the minimum flow rate is exceeded
again.
Cause
- 4 -
Measure
• Choose a higher suction level
• Clean the filter.
• Replace the fine filter.
• For low-dust replacement of the fine filter, observe
"Change fine filter"
Chapter
• Disconnect the suction hose at the suction point and
check whether there is a blockage in the suction point;
remove where appropriate.
• Check the suction line at all disconnection points /
service openings section by section for blockages.
• Check the installation of the SILENT flow sensor in
accordance with its instructions.
.