Maintenance - Burkert 8626 Instructions De Service

MAINTENANCE

The MFC and MFM are in principle maintenance-free when operated according to
the notes given in these Instructions, so that routine recalibration is unnecessary.
If after prolonged operation with contaminated medium, large quantities of particles
were drawn in, with Types 8626, 8006, 8716, 8706, 8712 and 8702 the easily
accessible stainless steel filter can be cleaned or replaced after removing the
flange plate on the inlet side (see Appendix B).
In the case of Types 8710 and 8700, this is not possible since the prefilter forms a
constructional unit with the flow division insert.
If the sensor is contaminated by the operating gas, the device may exhibit large
deviations from the required flow after prolonged operation. Cleaning and
recalibration in the factory will then be necessary.
ATTENTION!
NOTE
32 - MFC/MFM
The device must not be opened!
Inside the device there are further elements for flow
conditioning. Interference with the device, e. g. for cleaning, is
not permitted since the resulting changes in the sensor signal
would require recalibration in the factory!
Recalibration should be performed only in the factory, since it
requires very precise flow standards and a digital communication.