Testing The Indication Of Faults On The Front Indicator/Internal Indicator - Siemens FDA241 Technical Manual

Commissioning
7

Testing the indication of faults on the front indicator/internal indicator

7.4
86
Building Technologies
Fire Safety
Testing the indication of faults on the front
indicator/internal indicator
To test the indicator, the housing cover can be opened so that the fault indicator
flashes. The 'internal indicator' is visible. When you close the housing cover, the
fault indicator goes out. See also chapter 'Opening and closing the housing cover
when the power supply is switched on [➙ 46]'.
NOTICE
Electrostatic discharge
Damage to electronic components in the aspirating smoke detector
● When working on the open aspirating smoke detector, use anti-static floor
mats and anti-static work surfaces.
● Ground yourself immediately before opening the housing, e.g. by touching a
ground point or wearing an anti-static belt.
1
Opening the housing cover
Opening the housing cover
 The housing is free from dust.
1. Remove the two screws on the top of the aspirating smoke detector using a
size 2 Phillips screwdriver (step 1).
2. Slide the housing cover in the direction of the arrow until it snaps into place
(step 2).
 The housing cover is open.
 Opening of the housing is logged in the modification memory.
 The fault indicator flashes and the buzzer is switched on.
 The relay outputs remain active and the 4...20 mA analog output has been
switched to fault (0.5 mA).
3. Press the
 The relay outputs are deactivated.
 The 4...20 mA analog output remains on fault.
 The housing cover is open.
2
button to switch off the buzzer.
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2015-09-29