Siemens OOH740-A9-Ex - Maintenance and Repair; Detector Performance Checks

7
Maintenance / Repair
Performance check
60
Building Technologies A6V10367521_h_en_--
Fire Safety 2015-02-02
7 Maintenance / Repair
7.1 Performance check
The selftest automatically subjects the detectors to an extensive electrical
performance check. Nonetheless, a manual function check needs to be performed
on the detectors regularly.
The manual function check can be undertaken using the following tools:
l Test gas
l Hot air
Recommendation:
l Check the devices every year.
l Replace heavily soiled or damaged devices.
l All point detectors should be replaced after 6 to 8 years of service, depending
on the ambient conditions.
See also
2 Testing detectors [➙ 61]
7.1.1 'Technical Ambient Supervision Message' performance
check
You cannot test whether the 'Technical Ambient Supervision Message' is
functioning correctly with test devices.
Checking can only take place indirectly:
w You must know the current ambient temperature.
l Enter the following parameters in the 'Cerberus-Engineering-Tool' software:
- A hysteresis range of 5 °C.
- A temperature threshold which is at least 10 °C below the current ambient
temperature.
- Alarming when value falls below threshold
a The detector sends a signal to the control panel.
a The 'Technical Ambient Supervision Message' is working correctly if the control
panel displays an alarm.