Xylem Pump Flygt 3102.930

5.2 Estimate zinc anode replacement intervals

Remove, weigh, and reinstall one or more of the exterior zinc anodes before starting up the pump

After two months, remove and weigh the same zinc anode or anodes again

Enter the lapsed time in days between the initial and second weighing

Enter the anode weight loss in grams

Calculate the anode consumption rate (days/gram)

Calculate future replacement intervals based on the selected fraction of zinc remaining (recommended 0.25–0.50)

Estimate zinc anode replacement intervals

Measure the current anode consumption rate

Select the remaining fraction for replacement

Calculate the actual replacement interval

Is the calculated replacement interval less than 1 year?

If yes, schedule an earlier replacement

Recommend intervals for periodical inspection and overhaul

Was the inspection performed within the first year of operation?

6.1 Precautions — Maintenance guidelines

Perform these tasks during maintenance and before reassembly

Ensure existing index markings are in line during reassembly

Insulation-test the reassembled drive unit

Test-run the reassembled pump before normal operation

Perform a ground (earth) continuity test after service

Check for water in the oil housing

Does the oil contain too much water?

If the oil contains too much water