D-FL 200 / Rev. 6
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Industrie Elektronik GmbH & Co KG
(Fig. 26) Measuring in high temperature applications
13. Maintenance
The D-FL 200 is designed to require little maintenance. Maintenance intervals are long, typical several
months. The exact length of an interval will vary from site to site. In addition to this, however, the
monitoring system should be routinely inspected every three months.
Maintenance should be performed in the following sequence:
1. Cleaning of the external components of the transmitters and the evaluation unit.
2. Inspection of the purge air system and hose connections. Personnel should check for any leaks and
verify that the hoses are firmly in place.
3. Visual inspection of the pre-filter. The pre-filter must be emptied out as soon as the dust reaches
the level marked on the pre-filter. No tools are required to empty the pre-filter. The filter element of
the main filter can be cleaned multiple times before being replaced.
4. The maintenance intervals of the filters are dependent on the quality of the incoming air.
5. Cleaning of the transducers: The sensors may be pulled out from the flanges after the quick-release
hasps have been opened. A clean cloth should be used to clean the sensors.
