Conductivity was checked with the handheld at multiple points to verify hmi accuracy.
Found air and discoloration of water in the sight glasses.
Bled the softener and carbon tanks of air and turned the system back on. The system ran to drain because the conductivity was too high reading 27.5.
Swapped out the softener tanks and thoroughly flushed them with no change to the conductivity, the carbon tanks were changed and thoroughly flushed and bled of air bringing the conductivity down to 15.5. the system was put back online.
Note: new softeners we also installed on day shift around 2pm, about 5 hours before alarm
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