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8.10.5
Faults at the external fan
The following table shows the possible causes of and remedial measures for faults on forced-
ventilated machines.
Table 8-4
Cooling system faults
↓ High temperature rise with load
Possible causes of faults
X
Wrong direction of rotation of the external fan
X
External fan is not running
X
Reduced air flow
SIMOTICS FD 1LN1
Operating Instructions 01/2019
Remedial measures
Check the electrical connections to the external fan.
Check the external fan and its connections.
Check the air ducts; clean the machine.
Operation
8.10 faults
123
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