BUCHI Rotavapo R-220 SE - Manual (Page 39)

5 Putting into operation
39 R-220 SE Operation Manual, Version F
Adjustment instructions
• Make sure the foam sensor is installed correctly. Remove the white plastic screw a to get access
to the sensor adjustment screw.
• Allow sufficient foam formation.
• As soon as the foam touches the sensor housing, the LED at the sensor must switch active,
causing the aeration valve to open for an instant. The valve makes a noticable *click* sound!
➥If the sensor does not detect the foam use a small flat head screw driver to adjust the sensitivity
of the sensor.
➡ Check, if the LED switches off as soon as the foam collapses. If not, slightly decrease the
sensitivity and start a new adjustment cycle.
a
b
NOTE
The foam sensor can only be used at decending glassware setups!