BUCHI Rotavapo R-220 SE - Manual (Page 36)

5 Putting into operation
36 R-220 SE Operation Manual, Version F
5 .3 .1 Level sensors
Description of function:
The capacitive level sensors are recommended for setups with two receiving flasks to achieve unin-
terruptible evaporation over a longer period and for larger product volumes. The sensitivity of the
capacitive level sensors must be adjusted to safely detect the liquid level between different products.
Installation instructions:
• Mount the sensor at the vessel and connect it at the rear-side connection panel a.
• Fill in some solvent.
• Shift the sensor until it is located below the liquid level.
➥ The red LED at the sensor should now be off.
• If the sensor does not safely detect the liquid:
➥ Use a small screwdriver to set the sensitivity (with the small adjustment screw) b of the
sensor.
NOTE
• The sensor detects a liquid when the red LED is
off. The message "Level 1" or "Level 2" is
displayed on the Rotavapor display, depending on the tested sensor loop.
LEVEL 2 LEVEL 1
ቢ
Front view
Rear view ➡ The crosshair marks the sensitive area
Status LED
Adjustment screw
b