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 cutting wheel into the impeller.
c) Fit the outer sleeve onto the lubricated impeller screw.
d) Fit the impeller with the cutting 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.
Pressure class Phase Hz Distance
LT 1 60 43.5±0.3 mm
(1.71±0.01 in.)
LT 3 50, 60 46.0±0.3 mm
(1.81±0.01 in.)
HT 1,3 50, 60 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
Flygt 3102 Installation, Operation, and Maintenance Manual 59
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