Siemens FDO241 - Page 37

2BStructure and function
20BFunction
3
37 |
138
Building Technologies
007004_t_en_--
Fire Safety
2015-11-04
Information
displayed on the
detector
exchanger and
tester
Meaning
Measures
'No deviation' Normal, no fault is present
The detector is fully functional
None
'maybe excha.'
1
Observe information
The detector is fully functional
For
FDOOT
:
Slightly soiled
Clarify cause during periodic maintenance
'advice excha.'
1
Replacement recommended
Detector is still functional, in spite of minor
problems
For
FDOOT
:
Average soiling
Untypical sensor values caused by
environmental influence
For
FDO
:
Average soiling
Remedy the cause during the next
maintenance
Replace detector if necessary
'needed excha.'
1
Replacement necessary
Detection possibly restricted; alarming is still
possible
For
FDOOT
:
Heavily soiled, failure of one optical sensor
Failure of one or both thermal sensors
For
FDO
:
Heavily soiled
Perform maintenance service
Replace detector