Dmd Lever - Disassembly / Assembly - Emerson Leroy-Somer FFB Series Maintenance Manual

Brake motors
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6.3 - DMD lever
- Exploded view
- Parts list
Item
Description
7
Fan
8
Fan thrust washer (item 7)
9
Locking circlips (item 7)
13
Fan cover
27
Cover fixing screw (item 13)
1406
Cover closing hatch
1407
Fixing screw (item 1406)
1500
Stud (rep.1501)
1501
DLRA calliper
1502
DLRA control rod
1503
Spiral spring under nut
1504
Locknut
• Operation
For brakes fitted with a DMD, supply the brake coil separately
from the motor. Once the brake is released, supply the
electromagnet on the latch control plate. Once the latch
contact is triggered, power off the brake coil then the control
plate. The brake is maintained in the released position. When
brake power is restored, locking drops automatically and the
brake is operational.
• Disassembly:
- Disconnect the electromagnet plate 1700.
- Unscrew the control rods of the levers 1502 and 1605 (if
mounted on their base).
- Unscrew the screws 27 from the cover, remove the metal
cover 13.
- Remove the fan 7 by removing the axial holding circlips 9.
- Extract the fan 7 using two screwdrivers as levers.
- Unscrew the screws 1701 from the electromagnet plate
1700, then remove the plate.
To remove the latch (DLM) refer to § 6.2 and the (DLRA) refer
to § 6.1.
FFB Brake Motors Maintenance Guide
5287 en - 2015.04 / a
OPTIONS
1500
1502
1505
1600
1603
1501
1503
1504
1601
Qty
1
0 or 1
1
1
3 or 4
1
4
2
1
1
2
2
1605
1702
1602
1703
1704
1700
0008
1701
Item
Description
1505
Return spring (item 1501)
1600
Stud (item 1601)
1601
Latch mecanism
1602
Rotation axis (item 1601)
1603
Locknut
1605
Control rod (item 1601)
1700
Electromagnet plate assembly
1701
Plate fixing screw (item 1700)
1702
Contact pallet
1703
Washer under screw (item 1704)
1704
Pallet fixing screw (item 1702)
• Reassembly:
Reverse the removal procedure.
- When refitting the mechanical link between the latch and
the plate, adjust the contact pallet 1702 using the screw and
washer 1703, 1704.
Adjusting must be done with the rod in; check that the pallet
1702 actually activates the microcontact of the electromagnet
plate 1700. Lock the fixing screws 1703.
- Refit the fan...
After any loosening operation, check that the
brake is in the applied position once the
maintenance operations are performed.
Working position of the DMD lever:
Locking
direction
1605
Item 1605
unlocked
0007
0013
0027 1406
1407
0009
Qty
1
1
1
1
1
1
1
3
1
1
1
1502
1605
Item 1605
locked
29

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