VESDA VESDA VLF-500-UL 7Ed Product Guide
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Electrostatic discharge (ESD) precaution
Note: Several maintenance functions require that the front cover be removed and the system disabled.
Prior to carrying out any work or maintenance on the VESDA VLF take the necessary steps to
advise the monitoring authority that power may be removed and the system disabled.
Precaution: Electrostatic discharge precautions need to be taken prior to removing the front cover from the
detector otherwise damage may occur to the unit.
Legend
A 9 Pin DB9 PC COM Serial
extension cable (male)
B Cutaway, exposing the RS232
Serial Port (female)
Figure 2-1: 9 pin connector and RS232 serial port
Remove the Fascia
1. Turn off the 24V DC power to the detector.
2. Remove the two screws along side the door hinge, as shown below in Electrostatic discharge (ESD)
precaution.