9
Malfunctions and remedies
AM/AQ./AL adapters
Assembly and Operating Instructions – Explosion-Proof Gear Units
191
9.2
AM/AQ./AL adapters
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
•
Spider wear, short-term torque
transmission through metal con-
tact
•
Change the spider.
•
Screws to secure hub axially are
loose
•
Tighten the screws
Premature wear of
spider
•
Contact with aggressive fluids/
oils; ozone influence; excessive
ambient temperatures, etc. that
can change the physical proper-
ties of the spider.
•
Contact SEW‑EURODRIVE.
•
Impermissibly high ambient/con-
tact temperature for the spider;
maximum permitted temperature:
-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.
9.4
Adapter with AR slip clutch
Fault
Possible cause
Measure
Unusual, regular run-
ning noise
•
Meshing/grinding noise: Bearing
damage
•
Contact SEW‑EURODRIVE.
Oil leaking.
•
Seal defective
•
Contact SEW‑EURODRIVE.
24804134/EN – 05/2018
