Dust deposits
can make the balancing filter 13 of level indicator FMN 113 ineffective after a long operation time:
- Clean the dust collectors regularly (if necessary replace them).
Sharp edged filling material
can cause abrasion of the diaphragm:
- Regularly check the diaphragms(if necessary replace them).
Exchanging diaphragms:
- Detach and remove the screws of the diaphragm guard ring 2(3).
- Exchange diaphragm 4(5).
The plane surface on the diaphragm must be outside.
- Plug the screws into the holes of the new diaphragm and the guard ring and tighten adequately.
The bolt circle on the flat diaphragm is deliberately a little larger than the guard ring. Thus the initial tension of the diaphragm isn't too high.
- Readjust the level indicator afterwards.
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