Xylem LCP - Manual (Page 20)

Installation, Operating and Maintenance Instruction Model LS, LC, LCP
LS 100-english page 18 Revision 02
Artikel No. 771073402 Issue 01/2010
8.4 Removal of Impeller
Note attached "Mounting Instruction for Shaft
Sealing".
Loosen impeller nut (28) (right threaded) by fixing
the rotor at the coupling end.
Draw off the impeller (1) with two screw drivers or
pry bars (picture 10). Remove key (PF1).
pic 10
Be sure to locate pry bars under impeller vanes
to prevent damage to the impeller.
For further dismounting the Back Pull Out
Assembly should be placed in the vertical position
(with vertical shaft, see picture 11). Attention:
Precautions should be taken to prevent the Back
Pull Out Assembly from tipping!
pic 11
8.5 Removal of Shaft Sealing
Before you remove the casing cover (18..) notice
"Mounting Instructions for Shaft Sealing".
8.6 Removal of Bearing
Remove coupling with a coupling puller (picture
12), remove coupling key (PF2).
pic 12
Remove the flinger (73).
Loosen and remove hexagon screws (S5) resp.
hexagon nuts (M5), remove the lantern (11).
Only for bearing bracket 100S: Unscrew the
hexagon nuts (M8) and demount the bearing
cover (12/P).
Loosen and remove the hexagon screws (S6),
remove the bearing cover (12).
Move the shaft (24) with the pair of angular
contact bearings (K2) and the inner ring of the
roller bearing (K1) with haps by a wood or plastic
hammer with caution to the drive end (picture 13).
picture 13
Demount the roller bearing (K1) (cage) off the
bearing bracket (10).
Bend up the lock washer (SB), unscrew the
bearing nut (50) (right threaded), remove the lock
washer (SB).
Heat up the angular contact bearings (K2) and the
inner ring of the roller bearing (K1) and remove it
with qualified tools (e.g. with hook proof-puller)
from the shaft (24).
8.7 Reconditioning
After disassembly all parts must be cleaned and
checked for wear carefully. Worn or damaged parts
must be replaced by new parts (spare parts).
When reassembling the pump it is recommended to
replace all seals (flat gaskets, o-rings and radial shaft
seal rings).
All sealing materials of PTFE resp. Graphite are
intended for being used only once.
In most cases it make sense, if damaged absolutely
necessary, to renew the mechanical seal and the
bearings.
Deposits on the impeller (1), on the volute casing (4)
or on the casing cover (18) must be removed.