7
Inspection/maintenance
Inspection/maintenance work for DR..71 – 315, DRN63 – 315, DR2..56 – 80 brakemotors
Operating Instructions – AC Motors
162
7.6.15
Replacing the brake disk of BE05 – BE122 brakes
In addition to the brake elements listed in column "BE brake", see chapter "Inspection
and maintenance intervals" (→
119), check the hex nuts [61] for wear when you re-
place the brake disk. You must always replace the hex nuts [61] when you replace the
brake disk.
INFORMATION
•
With DR..71 – 80, DRN71 – 80 motors with BE05 – 2 brake, the brake cannot be
removed from the motor because the BE brake is directly installed on the brake
endshield of the motor.
1. Disconnect the motor and all mounted options from the power supply before start-
ing to work, and secure the motor against unintentional power-up.
2. Remove the following:
•
Forced cooling fan and rotary encoder, if installed, see chapter "Motor and
brake maintenance – preliminary work" (→
123).
•
Fan guard with encoder mount or fan guard [35], retaining ring [32]/[62] and fan
[36]
3. Remove the brake cable
•
BE05 – 11:
Loosen the terminal box cover and unfasten the brake cable from
the rectifier.
•
BE20 – 122:
Loosen locking screws of the brake plug connector [698] and re-
move plug connector.
4. Remove the rubber sealing collar [66]
5. Remove manual brake release if necessary.
•
Adjusting nuts [58], conical springs [57], studs [56], releasing lever [53], conical
seat [255], spherical washer [256]
6. Loosen the hex nuts [61], carefully pull off the magnet body [54] (brake cable!) and
take out the brake springs [50]/[276]/[1312].
7.
BE05 – 11:
Remove the damping plate [718], pressure plate [49] and brake disc
[68]
BE20, BE30, BE60, BE120:
Remove the pressure plate [49], pole sheet [63] and
brake disk [68]
BE32, BE62, BE122:
Remove the pressure plate [49], brake disk [68a] and [68b],
and the brake plate [52].
8. Clean the brake components.
9. Install new brake disk(s).
10. Brake parts are installed as described in chapter "Working steps for inspecting
DR..71 – 315, DRN63 – 315, DR2..63 – 80 brakemotors" (→
148).
•
Except for the fan and the fan guard, because the working air gap has to be set
first, see chapter "Setting the working air gap of BE05 – BE122
brakes" (→
11. In case of manual brake release: Use the adjusting nuts to adjust the floating
clearance "s" between the conical springs (pressed flat) and the adjusting nuts
(see chapter "Retrofitting the /HR, /HF manual brake release" (→
25851535/EN – 02/2019
Содержание DR 315 Series
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