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7. Inspection and maintenance<br />
7.1.3 Bearings<br />
The bearings are permanently lubricated and are maintenance<br />
free. However, if operation of the motor becomes louder<br />
and louder, the bearings should be inspected. Problems<br />
can be confirmed if the rotor is difficult to turn by hand or<br />
when turning the rotor / impeller by hand it is noticed that<br />
the rotation axis is not exact (rotor is not firmly in place). If<br />
this is the case the entire pump must be refurbished.<br />
7.1.4 Impeller<br />
In cases where the performance of the pump decreases, the<br />
condition of the impeller should be checked for wear and<br />
tear. Before placing the Aqualift F Pumpstation in service or<br />
if the Aqualift has not been in service for an extended period<br />
of time, the impeller should be turned by hand to make<br />
sure it rotates smoothly.<br />
162 Suction cover<br />
210 Pump shaft<br />
237 Impeller body<br />
230 Impeller<br />
321-01 Upper bearing<br />
321-02 Lower bearing<br />
355 Bearing holder<br />
410 Profile seal<br />
412-01 O-ring<br />
412-02 O-ring<br />
412-03 O-ring<br />
412-04 O-ring<br />
433-01 Rotating mechanical seal<br />
433-02 Rotating mechanical seal<br />
476 ge Ring bearing<br />
500 Ring<br />
561 Grooved dowel pin<br />
561-02 Grooved drive stud<br />
81-59 Stator<br />
818 Rotor<br />
821 Rotor package<br />
834 Cable inlet<br />
81-96 Cable connection<br />
903 Threaded pin<br />
914-01 Hexagonal threaded screw<br />
914-02 Hexagonal threaded screw<br />
914-03 Hexagonal threaded screw<br />
914-04 Hexagonal threaded screw<br />
914-06 Hexagonal threaded screw<br />
932-01 Securing ring<br />
932-03 Securing ring<br />
932-05 Securing ring<br />
970 ID Plate<br />
7.2 Control unit<br />
• The batteries in the control unit should be inspected at least<br />
once per year and replaced if necessary. Replacement batteries<br />
should be identical to the originals. Dispose of old<br />
batteries properly.<br />
• The motor protection switch is considered a wear and tear<br />
part and should be checked every year and replaced if necessary.<br />
Please replace with the identical switch (see<br />
Chapter 9) and dispose of the old switch properly.<br />
• Please make sure the see-thru cover of the control unit is<br />
properly closed and tightened.<br />
• Repairs of the control unit should be undertaken by the manufacturer<br />
only.<br />
7.3 Pump Disassembly<br />
Disassembly of an Aqualift pump may be undertaken only by<br />
a qualified licensed KESSEL customer service partner.<br />
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