Siemens FDA241 Technical Manual page 47

Building Technologies
Fire Safety
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.
Closing the housing cover
 The size 2 Phillips screwdriver and the two screws are available.
1. Slide the housing cover in the opposite direction to the arrow (step 2) until it
reaches the end position at the bottom.
2. NOTICE! Connection cable clamped between the back box and the housing
cover. Damage to the cable! Be aware of the connection cable when closing
the housing cover.
 Closing the housing cover automatically reactivates the relay outputs and
the 4...20 mA analog output switches to normal operation.
 Closing of the housing is logged in the modification memory.
 The fault indicator
3. Screw the housing cover to the housing base with the two screws. Tighten the
screws by hand (step 1).
 The housing cover is closed.
2
button to switch off the buzzer.
goes out and the audio warning is switched off.
Mounting / Installation
Preparatory work
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