8
Inspection/maintenance
Inspection/maintenance work EDR..71 – 315, EDRN63 – 315 motors
Operating Instructions – EDR..71 – 315, EDRN63 – 315
155
•
If there is gear oil, have the motor repaired by a specialist workshop.
6. If there is moisture inside the stator:
•
With gearmotors: Remove the motor from the gear unit.
•
With motors without a gear unit: Remove the A-flange.
•
Remove the rotor [1].
•
Clean the winding, dry it and check it electrically, see chapter
34).
7. Replace the rolling bearing [11], [44] with permitted rolling bearing types, see
chapter "Permitted rolling bearings" (→
205).
Push or pull the inner ring of the bearing.
8.
EDR..250 – 280, EDRN225 – 280 motors
with
/ERF or /NS option, or with
EDR../
EDRN315 motors
•
Fill the rolling bearing with grease until it is two-thirds full, see chapter
139).
•
Notice: Before installing the bearings, place the oil seal flange [608] and [21]
onto the rotor shaft.
•
Mount the motor vertically starting on the A‑side.
•
Place the springs [105] and lubrication ring [604] into the bearing bore of the
flange [7].
•
Hang the rotor [1] onto the B-side thread, and guide it into the flange [7].
•
Fasten the oil seal flange [608] to the flange [7] using the hex head screws
[609].
9. Reseal the shaft:
•
A-side: Replace the oil seal [106].
•
B-side: Replace the oil seal [30].
Coat the sealing lip with grease (Klüber Petamo GHY 133).
10. Reseal the stator seat:
•
Seal the sealing surface with duroplastic sealing compound (operating temper-
ature -40 °C to +180 °C), such as "SEW‑L‑Spezial".
•
For
EDR..71 – 132, EDRN63 – 132S
motors: Replace the seal [392].
•
For
EDR..71 – 132, EDRN63 – 132S
motors: Replace the O-ring [1480] if it is
deformed or damaged. Instead of the O‑ring, you can use "SEW‑L‑Spezial" for
example.
11. Install the motor and options.
25896334/EN – 06/2019