9
Malfunctions
Adapters AM/AQ./AL/EWH
Assembly and Operating Instructions – Gear unit series R..7, F..7, K..7, K..9, S..7, SPIROPLAN
®
W
159
9.2
Adapters AM/AQ./AL/EWH
Fault
Possible cause
Measure
Unusual, regular run-
ning noise
• Meshing/grinding noise: Bearing
damage
• Contact SEW
‑
EURODRIVE.
Oil leaking.
• Seal defective
• Contact SEW
‑
EURODRIVE.
Output shaft does not
turn although the motor
is running or the input
shaft is rotated.
• Shaft-hub connection in the gear
unit interrupted.
• Send in the gear unit/gearmotor for re-
pair.
Change in running
noise and/or vibrations
• Ring gear wear, short-term torque
transmission through metal con-
tact
• Change the ring gear.
• Screws to secure hub axially are
loose
• Tighten the screws
Premature wear in girth
gear
• Contact with aggressive fluids/
oils; ozone influence; excessive
ambient temperatures, etc. that
can change the physical proper-
ties of the ring gear.
• Contact SEW
‑
EURODRIVE.
• Impermissibly high ambient/
contact temperature for the girth
gear; maximum permitted tem-
perature: -20 °C to +80 °C.
• Contact SEW
‑
EURODRIVE.
• Overload
• Contact SEW
‑
EURODRIVE.
9.3
AD input shaft assembly
Fault
Possible cause
Measure
Unusual, regular run-
ning noise.
• Meshing/grinding noise: Bearing
damage.
• Contact SEW
‑
EURODRIVE.
Oil is leaking.
• Seal defective.
• Contact SEW
‑
EURODRIVE.
Output shaft does not
turn although the input
shaft is rotated.
• Shaft-hub connection in gear unit
or cover interrupted.
• Send the gear unit to
SEW
‑
EURODRIVE for repair.
21932786/EN – 05/2015