EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
177
13
Maintenance
Safety instructions
DANGER
Explosion hazard
There is a risk of explosion if the device is opened in a
potentially explosive atmosphere.
Please take note of the following information before opening
the device:
• A valid fire permit must be present.
• Make sure that there is no explosion hazard.
DANGER
Risk of explosion during maintenance of the device
While the device or its components are being
maintained/serviced, there is no explosion protection.
• ensure that no potentially explosive atmosphere can
occur.
WARNING
Risk of injury
Risk of injury due to maintenance work being carried out
incorrectly.
The work described in this chapter require special knowledge
and may require work to be done on the gas analyzer while it
is open and under voltage!
• Maintenance work on the gas analyzer should be
performed by qualified and specially trained personnel
only !
Use in Potentially Explosive Atmospheres
The inspection and maintenance of the explosion-protected
version of the gas analyzer requires special knowledge.
• Repairs and replacement of parts on the device may only be
done by ABB service.
• For information on returning the device, refer to
on page 176.
Inspection
Regular inspection
Proceed according to the checklist under
page 102.
Check leak tightness of the gas paths
The leak tightness of the sample gas path and, if applicable, the
reference gas path must be checked at least once a year during
operation.
The leak tightness of the sample gas path must always be
checked after the sample gas path has been opened inside the
gas analyzer (see
Measures to take after each opening of the
gas paths within the gas analyzer
If incoming measured values are creeping during operation
(e.g. after test gas is switched on) or implausible measured
values appear, a leak in the sample gas path is the possible
cause.