SICK GMS840 - Leak Tightness Checks; Checking the Leak Tightness of Sample Gas Lines; Checking the Leak Tightness of Purge Gas Paths

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8018429/1DWP/V3-0/2022-06| SICKADDENDUM TO OPERATING INSTRUCTIONS | GMS840
Subject to change without notice
5 MAINTENANCE
5.5 Leak tightness checks
5.5.1 Checking the leak tightness of sample gas lines
If the sample gas path was opened during maintenance work:
▸ Check the leak tightness of the connected sample gas lines after the maintenance work.
If it is suspected that the sample gas path could become leaky during operation (e.g. due to
special sample gas properties):
▸ Check the leak tightness of the connected sample gas lines in regular intervals.
5.5.2 Checking the leak tightness of purge gas paths
Only valid for versions with purge gas connections, see “Feeding purge gas for the
enclosure (option)”, page 16.
▸ Check the leak tightness of purge gas paths at least once a year.
▸ Check in the same manner as for leak tightness of sample gas lines (procedure
→ Operating Instructions “GMS800 Series”).
This check is an approval condition for the enclosures GMS841 (ATEX/ IECEx) and
GMS842 (
C
CSA
US)
, see “Main safety information”, page 7.
Leak tightness check procedure → “GMS800 Series” Operating Instructions