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Periphery components for ESSER FACP
4
Maintenance
Devices like automatic fire detectors, manual call points / MCP, alarm devices and transponders are
manufactured, configured and delivered as per the applicable standards and guidelines. Over time, use in
different ambient conditions can lead to the accumulation of dirt on the detector sensors of automatic fire
detectors due to air pollution such as aerosols, grease, dust etc.
For this reason, to ensure fire detectors are always ready for operation, it is necessary for them to be tested and
serviced on a regular basis (see DIN VDE 0833-1).
•
Before a fire detector is removed from the detector zone for servicing, it should be disconnected
from the fire alarm control panel.
•
In addition, note down the installation location and serial number.
A detector zone that is disconnected/in test mode cannot raise an alarm in case of an event!
•
Fire alarm systems must be tested regularly by fire alarm specialists. The details of such tests and all actions to
be carried out can be found in standard DIN VDE 0833-1 and VdS guideline 2095. In addition, other
accompanying standards (e.g. DIN 14675) must be complied with when fire alarm systems are serviced.
Servicing includes all actions on the protection and restoration of the nominal conditions and on the
identification and assessment of the actual status of the technical modules of a system.
Structure of maintenance process
Servicing
In addition, DIN 14675 provides information about requirements for maintenance with notes referring to various
detection measures and detector technologies.
However, detailed test instructions are not given. Therefore, the manufacturer has a duty to formulate relevant
instructions or to make compliant test equipment available.
For further informations refer to technical Information (Part No. 798654.GB0).
Depending on the technology used, fire alarms such as standard detectors can be equipped as detectors with
decentralized or centralized intelligence.
Through distributed intelligence, a detector can monitor its own specific values that correspond to the reference
values with adjusted response to an authorization value in accordance with EN 54.
By compensating reference values based on analytical self-monitoring, such intelligent fire alarms can give
readings that can be read and visualized with the service and programming software tools 8000. On the basis of
stored specific comparative values, this software can assess whether cleaning or replacement of the fire alarm
is required.
With standard detectors or fire detectors without analytical self-monitoring, a maintenance engineer will have no
choice but to act upon the fire alarm with the fire parameter being monitored, that is expected in the course of
the fire according to the fire loads. This criterion (smoke, heat, gas) should be recognized by the fire detector to
be tested in a given time, which is to be evaluated as a confirmation function of the detector.
Contaminated standard detectors usually display a greater insensitivity, meaning that the detection time of a
contaminated fire detector is considerably extended. These fire detectors can usually be cleaned, but it is not
possible to provide proof of regaining functionality according to EN 54.
8
Maintenance
Inspection
Repairs
Improvements
TI 798960.GB0 / 04.20
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