Elmo Rietschle V-KTA 140/4 - Manual (Page 23)

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Maintenance and repair
m
l k p r
s
5
l
1
q n
v u w
The coupling rubbers (bb. 9/k) are wearing parts
and should be checked regularly. When the coupling
rubbers are worn this can be detected by a knock-
ing sound when the pump is started.
CAUTION
Defected coupling rubbers
Defected coupling rubbers can cause extensive
damage and even in some extreme cases break
the rotor shaft.
To check the coupling, stop the motor (Fig. 9/m) and
isolate. Remove the screws (Fig. 9/s
5
) on the motor
fl ange (Fig. 9/n). Pull off the motor together with the
motor side coupling half (Fig. 9/q). If the coupling
rubbers (k) are damaged remove the circlips (Fig. 9/l)
from the coupling bolt (Fig. 9/r) and exchange the
coupling rubbers (k). Leave the spacer (p) in place.
Check the coupling bolts (Fig. 9/r) for any wear and
replace if necessary. To replace, remove the circlip
(Fig. 9/l
1
), pull off the coupling and fan (Fig. 9/v)
complete from the pumpshaft, remove the nut
(Fig. 9/w) with washer (Fig. 9/u) and exchange the
coupling bolts.
NOTICE
Frequent starting up and high ambient tem-
perature
The service life of the coupling rubbers (Fig. 9/k)
is reduced.
Re-assemble in reverse order.
Abb. 9 Coupling
k Coupling rubber
l Circlip
l
1
Circlip
m Motor
n Motor fl ange
p Spacer
q Motor side coupling half
r Coupling bolt
s
5
Screws
u Washer
v Fan
w Nut
7.2.4 Coupling