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) Insert the sleeve into the impeller.
b) Lubricate the threads of the impeller screw.
Always use a new screw.
c) Fit the impeller to the shaft.
d) Fit the impeller screw to the shaft.
e) Tighten the impeller screw.
Prevent the impeller from rotating.
For tightening torque, see Torque values on page 37.
3. Install the suction cover:
a) Fit the studs on the pump housing.
Use Loctite
™
603 locking liquid to secure the studs.
b) Fit the seal sleeves, the suction cover, and the nuts on the studs.
c) Tighten the nuts gradually until the suction cover touches the impeller.
Alternate between the nuts in a circular pattern.
4. Adjust the suction cover:
a) Raise the pump to an upright position.
b) Check that the impeller can rotate freely.
If necessary, then loosen the nuts.
c) Measure the clearance.
Final clearance: 0.2–0.8 mm (0.008–0.03 in)
6 Maintenance
Flygt 3069 Installation, Operation, and Maintenance Manual 45
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