Operating instructions

Clearing Malfunctions
GMS810-/GMS811-FIDOR · Operating Instructions · 8013911 V1-0 · © SICK AG 65
Subject to change without notice
8.4 Failure
Should a malfunction occur, the FIDOR switches automatically to “Failure”.
In this state:
● The red status indicator lights.
● A status signal is set.
● The sample gas path (including sampling probe) is purged with zero gas.
● A relevant error message is displayed on the operator panel and entered in the logbook.
 If you cannot clear the error: Contact SICK Customer Service.
If it was possible to clear the error without switching the FIDOR off, the FIDOR switches
automatically to Measuring mode.
8.5 FID does not ignite/burn
Malfunction Possible cause Information
FID does not ignite Fuel gas supply not available or
pressure too low
Ensure correct fuel gas supply.
Air in the fuel gas line Ignite repeatedly until the flame is
burning.
FID goes out “repeatedly” Fuel gas contaminated or pres-
sure varies
Ensure correct fuel gas supply
(clean tubes).