Service item Action
Zinc anodes If applicable, replace the zinc anodes.
Anodes are replaced when the anode mass is reduced to a selected fraction of its
initial mass. The recommended interval for the selection fraction is 0.25–0.50 (25–
50%).
8.2.2 Major overhaul
The basic repair kit includes O-rings, seals, and bearings.
For a major overhaul, do the following in addition to the tasks listed under Inspection.
Service item Action
Support and main bearing Replace the bearings with new bearings.
Mechanical seal Replace with new seal units.
8.3 Drain the liquid from the stator housing
Item Label Description
1 INSP Inspection plug for inspection and drainage
Figure 5: Inspection plug
1. Remove the inspection plug.
2. Pump out the liquid.
8 Maintenance
Concertor
™
6020 Installation, Operation, and Maintenance Manual 37
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