LSB german_french_english 771076129 - Water Solutions

Installation, Operation and Maintenance InstructionModel LSBUsing the jack screws provided (901.42), separatethe Back Pull Out Assembly from the casing.8.5 Removal of ImpellerNotice attached "Mounting Instruction for ShaftSealing".pic 8Pull up screw driver only so far as is absolutelynecessary to insert the guard plate into thewindow. If the guard plate doesn´t stick fast inthe window after installation:Dismantle guard plate once again, flatten it andinstall again.8.4 Removal of the Back Pull OutAssemblyThe back pull out assembly consists of all pump partsexcept the volute casing (102V). As the pumps areconstructed in block design, the volute casing (102V)can remain on the foundation and in the piping, if it´snot the volute casing itself, which must be repaired. Drain volute casing (102V) via drain plug (912.11). Loosen screws of existing sealing or flushingpipings. Loosen screws of support food (183) from thefoundation (not existing on all sizes). Hang the Back Pull Out Assembly onto a liftingdevice, so that it won´t sink down or press into thevolute casing during the dismounting. Examplesee picture 9 for lifting recommendations.If the impeller has back vanes check the axialclearance "a" between the impeller (230) andcasing cover (161) before you continue thedismounting. Refer to sect. 8.8.1.Loosen impeller nut with a sensitive hit on thewrench (right-hand thread). If necessary back upwith a pry bar in the cross boring of the stud shaft(in clamp area).Draw off the impeller (230) with two screw driversor pry bars (picture 10). Remove key (940.31).Be sure to locate pry bars under impeller vanesto prevent damage to the impeller.For further dismounting, and for installation, theBack Pull Out Assembly should be placed in avertical position. Prevent assembly from tipping!pic 108.6 Removal of Shaft SealingBefore you remove casing cover notice "MountingInstructions for Shaft Sealing".Unfasten hexagonal nut (902.32) (not available onall pump sizes) and take casing cover (161) out ofbearing bracket (344).pic 9Loosen hexagen head bolt (901.11) from thecasing.8.7 Removal of Stub ShaftLoosen screws (920.41) and pull motor with stubshaft (210) out of the motor lantern (341).Loosen radial stub shaft screwing (904.41 and904.42) (stud bolts) and deduct stub shaft (210)from motor shaft. For support (break loose) youcan insert a solid screw driver into the crossboring, press it against the front face of the motorand move both shafts against each other.LSB 100-english page 84 Revision 02Artikel Nr. 771076129 Ausgabe 01/2010