Renfert SILENT flow sensor Guia De Inicio Rapido página 16

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Checking leak-tightness
♦ The SILENT flow sensor is connected to a socket.
en
♦ The green operating indicator (9) lights up.
♦ The yellow indicator for the defined threshold value lights up (5, 6, 7).
⇒ Switch suction on.
♦ The green operating indicator begins to flash.
♦ The yellow indicator for the defined threshold value lights up.
⇒ Close the suction mouth with your hand so that air is no longer drawn in through the suction mouth.
⇒ Pay attention to noises that could indicate leakage.
Green indica-
tor
Light is on
Flashing
Checking function
After assembly, check the leak-tightness of the suction route and the function of the SILENT flow sensor.
♦ The SILENT flow sensor is connected to a socket.
♦ The green operating indicator (9) lights up.
♦ The yellow indicator for the defined threshold value lights up (5, 6, 7).
⇒ Switch suction on.
♦ The green operating indicator begins to flash.
♦ The yellow indicator for the defined threshold value lights up.
⇒ Close part of the suction mouth with your hand so that the flow rate drops below the defined threshold
value.
♦ After a short time, the indicator for the corresponding threshold value starts to flash.
♦ The warning tone is output after approx. 30 seconds.
⇒ Pay attention to noises that could indicate leakage.
⇒ Release the suction mouth again and continue to suction for approx. 30 seconds.
♦ The indicator for the corresponding threshold value lights up steadily.
♦ The warning tone is no longer output.
⇒ Switch off the extraction unit.
Operation
Operation
If the flow rate is less than the defined threshold value for a certain period, 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, the level of exposure to dust is
harmful to health!
⇒ Stop working at the suction point.
⇒ In the case of multi-workbench extraction units (SILENT TS2 / TC2 / EC2), you must stop working at
all suction points. This also applies for suction points of the multi-workbench extraction unit that are not
equipped with a SILENT flow sensor.
⇒ Determine why the flow rate is too low and resolve the issue.
Yellow indi-
cator
Light is on
Leak-tight / no leakage
Light is on or
Leak between the suction mouth and the SILENT flow sensor / check the
flashing
suction route between the suction mouth and the SILENT flow sensor,
in particular whether the inlet nozzle IN (1) has been fully and securely
screwed into the sensor.
Result / measure
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Silent