Colasit CMVpro 125, Operating Instructions Manual, Page: 57 / 76

Repair | 11
Operating instructions CMVpro 125-400 | Version 1-en 57 / 76
Fault Possible cause Fault discovery Remedy
Winding damage on
the electric motor. Winding measure-
ment. Repair or replace elec-
tric motor
_
Chap. 11.7 [
}
64].
Electric motor bearing
damage. Turn electric motor by
hand.
Damaged cable, faulty
cable connection. Measurement, visual
inspection. Replace cable.
Strong vibra-
tion. Deposits on impeller,
imbalance. Visual inspection, vi-
bration measurement. Clean impeller
_
Chap. 10.3.3 [
}
53].
Balance impeller
_ Chap. 4.1 [ } 21].
Adjust cleaning inter-
val.
Damaged or mal-
formed impeller due to
(prohibited) conveyed
medium. Visual inspection. Replace impeller
_
Chap. 11.5 [
}
61].
Points to observe:
_ Chap. 2.2.1 [ } 8]
and
_ Chap. 2.2.2 [ } 10].
Clarify composition of
conveyed medium and
plastic resistance.
Measure temperature
of the conveyed
medium. Adjust operating con-
ditions to intended use
_ Chap. 2.2.1 [ } 8].
Check operating point.
Check environmental
conditions.
Ductwork connected
directly to fan casing. Adjust connection
(sleeve) and ductwork
distance appropriately
_
Chap. 6.8 [
}
35].
Change in length of
ductwork due to ther-
mal expansion.
Loose impeller. Can the impeller be
moved axially on the
motor shaft? Adjust impeller posi-
tion
_ Chap. 11.8 [ } 65]
Clamp down clamping
adapter
_
Chap. 11.5 [
}
61].
Impeller dips into con-
densate at bottom of
casing. Type K: visual inspec-
tion. Drain condensate
_ Chap. 4.3.5 [ } 24].