Operating Manual
3KXG165002R4201_2021_04
ABB PROPRIETARY INFORMATION 12
GLA531 Series LGR-ICOS™ Gas Analyzer
N
2
Purge
WARNING!
PRESSURIZED ENCLOSURE. PROTECTIVE GAS IS NITROGEN. THIS
ENCLOSURE CONTAINS INERT GAS AND MAY BE AN ASPHYXIATION
HAZARD. THIS ENCLOSURE ALSO CONTAINS A FLAMMABLE
SUBSTANCE THAT MAY BE WITHIN THE FLAMMABLE LIMITS WHEN
EXPOSED TO AIR.
REMOVE POWER BELOW 0.5 MBAR, 0.2 INCH OF WATER COLUMN.
DO NOT OPEN THE ENCLOSURE UNLESS THE AREA IS KNOWN TO BE
NON-HAZARDOUS, OR UNLESS ALL DEVICES WITHIN THE
ENCLOSURE HAVE BEEN DE-ENERGIZED. POWER MUST NOT BE
RESTORED AFTER THE ENCLOSURE HAS BEEN OPENED UNTIL THE
ENCLOSURE HAS BEEN PURGED FOR 36.4 MINUTES AT THE
SPECIFIED FLOW RATE. THE SAFETY OF THIS EQUIPMENT RELIES
ON THE PROVISION OF PROPER PURGING AND PRESSURIZING WHEN
USED IN HAZARDOUS LOCATIONS. IT MUST NOT BE PUT INTO USE
WITHOUT SPECIAL PERMISSION FROM THE INSPECTION AUTHORITY
HAVING JURISDICTION WHEN USED IN HAZARDOUS LOCATIONS.
Burn Hazards
The analyzer is designed to receive high-temperature gas up to 105 °C at the inlet gas bulkhead. The ICOS
Module is heated, and its internal temperature is maintained during normal operations. If controller malfunction or
temperature over-run occurs, the ICOS Module heaters may reach approximately 90 °C. The temperature set-
point of the ICOS Module depends on the measured gas species. Burn hazard labels are located near the inlet
gas bulkhead (as applicable) and the ICOS Module to help identify burn hazards inside the analyzer.
WARNING!
Allow the system to cool down before performing any maintenance work.
Burn hazards may be present during replacement or service of the ICOS
heaters, filters, thermocouples, and solenoid valves.
Figure 2 Burn Hazard Label and Location
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