Xylem Flygt 3069 - Remove the F-Impeller; Install the F-Impeller

6.7.1 Remove the F-impeller
CAUTION: Cutting Hazard
Worn parts can have sharp edges. Wear protective clothing.
1. Remove the nuts, the suction cover, and the seal sleeves.
2. Remove the impeller screw.
Prevent the impeller from rotating.
3. Remove the impeller and the sleeve.
6.7.2 Install the F-impeller
1. Prepare the shaft:
a) Polish off any flaws by using a fine emery cloth.
The end of the shaft must be clean and free from burrs.
b) Coat the inner conic and the outer cylindrical surfaces of the sleeve with a thin layer
of grease.
WS008329B
The correct lubrication is grease for bearings, for example Exxon Mobil Unirex N3,
Mobil Mobilith SHC 220 or equivalent.
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 39.
3. Install the suction cover:
a) Fit the studs on the pump housing.
Use Loctite 603 locking liquid to secure the studs.
6 Maintenance
Flygt 3069 Installation, Operation, and Maintenance Manual 47
EN