Elmo Rietschle V-VCE 25/40 - Manual (Page 24)

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Maintenance and repair
7.2.4 Coupling
The coupling rubbers (Fig. 9/k) are subject to wear
and und must be checked regularly (at least once a
year).. You can tell when the coupling rubbers are
worn by a knocking noise when the pump starts up.
CAUTION
Defective coupling rubbers
Defective coupling rubbers may lead to the rotor
shaft breaking
To check the coupling switch the motor (Fig. 9/
m) off and ensure that it cannot be switched
on again.. Undo the screws (Fig. 9/s
5
) on the
motor fl ange (Fig. 9/n) . Remove the motor axi-
ally with the half of the coupling on the motor side
(Fig. 9/q) and suspend with the lifting device. If the
coupling rubbers (Fig. 9/k) are damaged remove
the retaining rings Fig. 9/l) from the coupling bolts
(Abb. 9/r) and replace the coupling rubbers (Abb. 9/
k). Leave the spacer ring (Fig. 9/p).
Check and if necessary replace the coupling bolts
(Fig. 9/r): Remove the retaining ring (Fig. 9/l
1
). Re-
move the coupling (Fig. 9/q
1
) and the fan (Fig. 9/v)
from the pump shaft. Undo the nuts (Fig. 9/w) and
the washers (Fig. 9/u) and replace the coupling
bolts.
NOTICE
Frequent start up and high ambient tempera-
ture
The service life of the coupling rubber (Fig. 5/k) is
reduced by this.
Re-assemble in reverse order.
Fig. 9 Coupling
k Coupling rubber
l
1
Retaining ring
m Motor
n Motor fl ange
p Spacer ring
q Coupling half on the motor side
q
1
Coupling half on the pump side
r Coupling bolt
s
5
Screw
u Washer
v Fan
v
1
Fan cover
w Nut