4.1.1.1 Illustration
1
2
4
3
5
6
7
8
9
10
130BC429.11
11
Illustration 4.1 Brake and Rotor
1
Rotor width, minimum 5.5 mm
2
Air gap, maximum 0.45 mm
3
Fastening screws
4
Armature plate
5
Magnet
6
Springs
7
Hub for rotor
8
Rotor
9
Friction Plate
10
Hollow screws
11
Brake Cover and nuts
Table 4.2 Legend to
1.
Open the brake completely by turning the brake
cover nuts (11) counter-clockwise.
2.
Loosen the fastening screws (3) completely by
turning them counter-clockwise.
3.
Remove the installed brake and rotor from the
hub of the rotor (7).
4.
Assemble the new brake and rotor on the hub of
the rotor (7).
5.
Tighten the fastening screws (3).
6.
Close the brake cover and tighten the covering
nuts.
CAUTION
Even after the exchange of the rotor, the complete braking
torque will only be effective after the brake linings at the
rotor have been run in.
Check the brake cover seal before closing it and exchange
the seal if any damage is detected.
4.1.2 Adjusting the Nominal Braking
Torque and Replacing the Springs
The nominal braking torque can be adjusted and broken
springs can be replaced. Follow the instructions in
4.1.1 Replacing the Brake and Rotor
to open the brake as
reference for the nominal braking torque:
Nominal braking torque in Nm
Number of springs
10
7
7
5
6
4
4
3
Table 4.3 Nominal Braking Torque
4.2 Inspection during Operation
Changes in relation to normal operation, such as higher
temperatures, vibrations, noises etc. tend to indicate that
the function is impaired. To avoid faults which could lead
directly or indirectly to injury to persons or damage to
property, inform the maintenance staff responsible. If in
any doubt, switch the geared motors off immediately.
Carry out regular inspections during operation. Check the
VLT
®
OneGearDrive at regular intervals for anything
unusual.
Pay particular attention to:
•
Unusual noises
•
Overheated surfaces (temperatures up to 70 °C
may occur in normal operation)
•
Uneven running
•
Strong vibrations
•
Loose fastenings
•
Condition of electrical wiring and cables
•
Poor heat dispersion
In the event of irregularities or problems, contact Danfoss
Service.
Service and Maintenance
VLT
®
OneGearDrive Operating Instructions
MG75C302 - VLT
®
is a registered Danfoss trademark
17
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