User guide
page 61 of 102
The controller itself is maintenance-free.
Contamination of the pressure transducer or deposits will inuence the
accuracy of measurement.
➨ Attention: Never use a pointed or sharp-edged tool
to clean the pressure transducer.
➨ Never touch the ceramic diaphragm of the pres-
sure transducer with hard objects.
➨ Fill the measurement chamber with a solvent (e.g.,
benzene) and allow sufcient cleaning time. Observe
all regulations concerning usage and disposal of sol-
vents!
➨ Drain the solvent and dispose of in accordance with
regulations. Repeat cleaning if necessary.
➨ Rinse the measurement chamber several times with
alcohol in order to remove all solvent residues.
➨ Allow the pressure transducer to dry.
➨ Readjust the pressure transducer if necessary.
Readjustment of the VNC 2 controller
See section “Readjustment of VNC 2”, pg. 58.
Cleaning the pressure transducer
Please continue with part 2 of this manual.