42 A-96.250.571 / 050517
AMI Codes-II
Maintenance
6. Maintenance
6.1. Maintenance Schedule
WARNING
Stop operation before maintenance.
Stop sample flow.
Shut off power of the instrument.
If pH option is installed:
Daily (dirty water)
up to every
2 weeks (clean
water)
Check sample supply for dirt.
Clean all filters and strainers, if necessary.
Clean AMI Codes protection filter, if necessary.
Check sample flow (see also Troubleshooting, p. 64)
Every 2–4 weeks Clean reagent canisters and prepare new reagents.
Let instrument run for 1 h. Make 3 manual measure-
ments. Compare average value to displayed value. If nec-
essary, perform process calibration.
Monthly Recommendation: Check photometer with verification kit
Verification, p. 49
Yearly Exchange reagent pump tubes, see Tube Replacement,
p. 59.
By occurrence: E020, FOME dirty: Cleaning the Photometer, p. 54
E022, Reagent empty: Refill or replace Reagents, p. 44
E065, Reagents low: Refill or replace Reagents, p. 44
Weekly Perform a process calibration, see Process pH, p. 51.
Every 2 months: Perform a standard calibration, see Standard pH, p. 52.
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