Opening And Closing The Housing Cover When The Power Supply Is Switched On - Siemens FDA241 Technical Manual

Mounting / Installation
5
Preparatory work
5.1.2
46
Building Technologies
Fire Safety
Closing the housing cover
 The size 2 Phillips screwdriver and the two screws are available.
 The power supply is switched off.
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.
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.
Opening and closing the housing cover when the power
supply is switched on
When the housing cover is open, the mini USB connection and the internal
indicators are accessible.
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.
NOTICE
Accidental triggering of an alarm
Triggering a false alarm
● When the housing cover is opened, the buzzer sounds. The relay outputs
remain active and the 4...20 mA analog output has been switched to fault
(0.5 mA).
● If the button is pressed, the buzzer switches off and the relay
outputs are deactivated. The 4...20 mA analog output remains on fault.
● Closing the housing cover automatically reactivates the relay outputs and the
4...20 mA analog output switches to normal operation.
A6V10334410_h_en_--
2015-09-29