Maintenance and Troubleshooting
Hardware Installation and Maintenance Manual B
–23
The powder material in the scrubber efficiency indicator changes color from
turquoise to dark grey if there is any H
2
S breakthrough, as shown in Figure
B–20 on page B–25. Alternatively, regular validation of the system with an
appropriate gas standard will indicate when the scrubber needs to be replaced.
The system will activate a New Scrubber Alarm fault, which triggers the
General Fault Alarm to indicate when it is time to replace the scrubber and
scrubber efficiency indicator. Once the scrubber and scrubber efficiency
indicator have been replaced, reset the scrubber lifetime monitor with the New
Scrub Installed parameter and the General Fault Alarm with the Reset
option for the General Alarm
DO parameter (see “To change parameters in
Mode 2” in the Firmware Manual for your analyzer).
When specifying gas standards, indicate H
2
S in methane balance.
For a measured range of 0-20 ppm, a concentration of 4 to 16
ppm is recommended.
Figure B–18 Predicted scrubber lifetime based on
average H
2
S load
20
0
40
60
80
100
20
0
40
60
80
100
REMAINING CAPACITY (%)
0 100 200 300 400 500 600
DAYS
4 ppmv, 2” Scrubber
100 ppmv, 3” Scrubber
To Next Page
Loading...
Need help?
General
