Elmo Rietschle V-VC 400/500/700/900/1100/1300 - Manual (Page 21)

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Maintenance and repair
7.2.1 Coupling
The coupling rubbers (Fig. 5/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. 5/
m) off and ensure that it cannot be switched
on again.. Undo the screws (Fig. 5/s
5
) on the
motor fl ange (Fig. 5/n) With base fi xing also undo
the screw (Fig. 5/s
6
). Remove the motor axially with
the half of the coupling on the motor side (Fig. 5/q)
and suspend with the lifting device. If the coupling
rubbers (Fig. 5/k) are damaged remove the retaining
rings Fig. 5/l) from the coupling bolts (Abb. 5/r) and
replace the coupling rubbers (Abb. 5/k). Leave the
spacer ring (Fig. 5/p).
Check and if necessary replace the coupling bolts
(Fig. 5/r): Remove the retaining ring (Fig. 5/l
1
).
Remove the coupling with the fanFig. 5/v) from the
pump shaft. Undo the nuts (Fig. 5/w) and the wash-
ers (Fig. 5/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. 5 Coupling
k Coupling rubber
l Retaining ring
l
1
Retaining ring
m Motor
n Motor fl ange
p Spacer ring
q Coupling half on the motor side
r Coupling bolt
s
5
Screw
s
6
Screw
u Washer
v Fan
w Nut