Heidolph ROTAVAC Vario pumping unit - Manual (Page 49)

page 49 of 61
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
The controller itself is maintenance free.
Contamination of the pressure transducer or deposits will influence the accuracy of measurement.
Attention: Never use a spiky or sharp-edged tool to clean the pressure transducer.
Clean a contaminated pressure transducer as follows:
➨
Disconnect vacuum connection.
➨ Fill the measurement chamber with a solvent (e. g. benzene) and allow sufficient cleaning time. Ob-
serve all regulations concerning usage and disposal of solvents!
➨ Drain the solvent and dispose of in accordance with regulations, repeat cleaning if necessary.
➨ Rinse the gauge head chamber several times with alcohol in order to remove all solvent residues.
➨ Allow the pressure transducer to dry.
➨ Assemble vacuum connection.
➨ Readjust the pressure transducer if necessary.
10 Cleaning the pressure transducer
vacuum
connection
NOTICE