3. Grease the threads of the impeller screw and the washer.
The proper lubrication of the screw and washer is lubricating grease for assembly of
bolts etc., for example, Kluber ALTEMP Q NB 50 or equivalent.
4. Check that the impeller screw is clean and easy to screw into the shaft end.
This is to prevent the shaft from rotating with the impeller screw.
5. Assemble the upper conical sleeve and the upper impeller onto the shaft.
6. Mount the diffuser parts and tighten.
7. Mount the suction cover with its O-ring and tighten.
Tightening torque: 76 Nm (57 ft-lb)
6 Maintenance
46 Flygt 2190, 2201 Installation, Operation, and Maintenance Manual
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