
8
Inspection/maintenance
Inspection/maintenance work EDR..71 – 315, EDRN63 – 315 brakemotors
Operating Instructions – EDR..71 – 315, EDRN63 – 315
178
8.7.19
Replacing BE60 – 122 brakes of EDR..250 – 315, EDRN250 – 315 motors
ü
The motor and all connected options are disconnected from the power supply.
ü
The motor is protected against unintended restart.
1. Disassemble the following parts:
ð
Forced cooling fan and rotary encoder, if installed, see chapter
brake maintenance – preliminary work" (→
141).
ð
Fan guard with encoder mount [212] or fan guard [35], retaining ring [32]/[62]
and fan [36]
2. Unscrew the locking screws of the brake plug connector [698] and remove the plug
connector.
3. Remove the screws and brake (with brake endshield if necessary) from the stator.
ð
EDR..250 – 280, EDRN250 – 280 motors: Replace the O ring [1607].
4. If necessary, replace driver [70], key [71], and retaining ring [62], see chapter
spection steps for EDR..71 – 315, EDRN63 – 315 brakemotors" (→
5. Seal the shaft.
6. Replace the sealing ring [95].
7. Apply grease to the sealing lip, see chapter
"
Order information for lubricants, anti-
corrosion agents and sealants" (→
8. Position the new brake. Make sure the cable outlet and brake lining carrier gearing
are correctly aligned.
ð
Manual brake release option: It is important that the manual brake release is
positioned properly.
9. Refasten the brake using the screws.
ð
Cap screws [900]
ð
Tightening torque: 230 Nm
ð
Tolerance ±10%.
10. Insert plug connector [698] in the brake and fasten using screws.
ð
Tightening torque 3 Nm.
11. Remove the clamping strap [157] of the old brake. Attach the clamping strip [157]
to the sealing strip [66] of the new brake. Make sure that sealing strip and clamp-
ing strap are positioned correctly.
12.
DANGER!
No braking due to incorrectly set floating clearance "s". Severe or
fatal injuries. Make sure the floating clearance "s" is set correctly so that the pres-
sure plate can move up as the brake lining wears.
Manual brake release option: Set the floating clearance "s" using the adjusting
nuts, see chapter "Retrofitting the /HR, /HF manual brake release" (→
179).
13. Install the disassembled parts of the motor.
25896334/EN – 06/2019