SEW-Eurodrive MGFAT1-DSM-C/PE, Operating Instructions Manual, Page: 64 / 124

7
Service
Malfunctions of the mechanical drive
Operating Instructions – MOVIGEAR
®
classic
64
7 Service
NOTICE
Improper work on the drive units can lead to damage.
Possible damage to property.
• Note that only qualified personnel is permitted to repair drives from
SEW‑EURODRIVE.
• Consult SEW‑EURODRIVE Service department.
7.1 Malfunctions of the mechanical drive
The following table shows troubleshooting options for malfunctions of the mechanical
drive:
Fault Possible cause Measure
Unusual, regular running
noise Meshing/grinding noise:
Bearing damage Consult
SEW‑EURODRIVE Service
Knocking noise: Irregularity
in the gearing
Unusual, irregular run-
ning noise Foreign objects in the oil Stop the drive and contact
SEW‑EURODRIVE SER-
VICE
Oil leaking from the gear
unit cover Gear unit cover seal leak-
ing Consult
SEW‑EURODRIVE Service
Oil leaking from the con-
nection box Internal seal defective Consult
SEW‑EURODRIVE Service
Oil leaking from oil seal
at output end
1)
Oil seal defective Replace oil seal
Too much oil Correct the oil quantity
Drive installed in the wrong
mounting position or
breather valve installed in
wrong position Install the breather valve
correctly
Output shaft does not
turn even though the mo-
tor is running Shaft-hub connection in the
gear unit interrupted Send in the drive unit for
repair
Drive unit does not start Supply cable interrupted Check connections, correct
if necessary
Fuse blown Replace fuse
Motor protection tripped Check motor protection for
correct setting, correct fault
if necessary
Frequency inverter defect-
ive, overloaded, incorrectly
wired, or incorrectly set Check frequency inverter,
check wiring
25805134/EN – 07/2018