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7.2.3 Coupling
Fig. 11 Coupling
k
Coupling sprocket
m
Motor
n
Fan housing
2
q
Coupling half on the motor side
s
Screws
5
v
Fan
m
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s
5
v
q
k
The coupling sprocket (Fig. 11/k)) is subject to wear
and must be checked regularly (at least once a year).
CAUTION
Defective coupling sprocket
Defective sprockets may lead to the rotor shaft
breaking.
To check the coupling switch the motor (Fig. 11/m)
off and ensure that it cannot be switched on again.
Undo the screws (Fig. 11/s
Remove the motor with the coupling half on the
motor side (Fig. 11/q) from the fanhousing (Fig. 11/
n
) axially and suspend using a lifting tool. If the
2
sprocket (Fig. 11/k) is damaged or worn, then re-
place it. The fan (Fig. 11/v) should also be checked
for damage from time to time and replaced if neces-
sary.
NOTICE
Frequent starting up and high ambient tem-
perature
The service life of the sprocket (Fig. 11/k) is re-
duced.
Re-assemble in reverse order.
Maintenance and repair
n
2
) on the motor flange.
5
|
25
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