NOTICE:
Surplus grease can cause the impeller to become loose. Remove surplus grease
from conical and/or cylindrical surfaces of shafts and/or sleeves.
2. Mount the impeller:
a) Fit the conical sleeve onto the shaft.
b) Fit the cutter wheel into the impeller.
c) Fit the outer sleeve onto the lubricated impeller screw.
d) Fit the impeller with the cutter wheel onto the shaft with the impeller screw.
Do not tighten the impeller screw.
3. Adjust the impeller:
a) Use a straightedge and a vernier to measure the distance between the vanes of the
impeller and the shoulder for the pump housing on the oil housing bottom.
The correct distance for pressure class LT and HT is 43.5±0.3 mm (1.71±0.01 in.).
b) Slide the impeller on to the shaft until you reach the correct distance.
6 Maintenance
56 Flygt 3085 Installation, Operation, and Maintenance Manual
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