Maintenance and Troubleshooting
Hardware Installation and Maintenance Manual B
–25
5. Tighten all new fittings 1-1/4 turns with a wrench from finger tight.
For connections with previously swaged ferrules, thread the nut to
the previously pulled up position, then tighten slightly with a wrench.
6. 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).
7. Restart the SCS.
8. Check all connections for gas leaks. SpectraSensors recommends
using a liquid leak detector.
9. Re-validate the system with an appropriate gas standard following
the instructions under “Validating the Analyzer” in the Firmware
Manual for your analyzer.
10. Purge the scrubber and scrubber efficiency indicator assembly with
nitrogen to remove all flammable gas and cap the inlet and outlet.
H
2
S scrubbers and scrubber indicators contain Copper (II) Oxide
[CAS# 1317-38-0] and basic cupric carbonate [CAS# 12069-69-
1], which are harmful if swallowed and toxic to aquatic organisms.
Handle with care and avoid contact with the internal substances.
Figure B–20 H
2
S scrubber efficiency
indicator before and after breakthrough
AFTER BREAKTHROUGHBEFORE BREAKTHROUGH
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