Operation
8.7 Faults in operation
WOGeneric TEAAC / 2008
Siemens AG Operating Instructions 1.03 1RQ671...-Z 43
Electrical faults
Table 8-1 Electrical faults
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Possible causes of faults Remedial measures
(1)
X X X X Overload Reduce the load.
X Interruption of a phase in the supply
cable
Check the switches and cables.
X X X X Interruption of a phase in the supply
after switching on
Check the switches and cables.
X Mains voltage too low, frequency too
high
Check the power supply conditions.
X Mains voltage too high, frequency too
low
Check the power supply conditions.
X X X X X Stator winding incorrectly connected Check the winding connection.
X X X X Winding short circuit or phase short
circuit in stator winding
Determine the winding and insulation
resistances. Make repairs following
consultation with the manufacturer.
X Wrong direction of rotation of the
separately driven fan
Check the connection of the separartely
driven fan.
X Separately driven fan is not running Check the separately driven fan and its
connection.
(1)
As well as eliminating the cause of the fault (as described under "Remedial measures"), you must also rectify any
damage the machine might have sustained.
Mechanical faults
Table 8-2 Mechanical faults
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Possible causes of faults Remedial measures
(1)
X Rotating parts are grinding Establish the cause and realign the parts.
X Reduced air supply, direction of rotation of
separately driven fan possibly incorrect
Separately driven fan is not running
Check the ventilation path; clean the machine.