Manual

72 3-phase stepper motor
8 Service, maintenance and disposal BRS3
0198441113730, V2.02, 03.2011
Cleaning
Clean dust and dirt off the motor at regular intervals. Insufficient heat
dissipation to the ambient air may excessively increase the temperature.
Motors are not suitable for cleaning with a pressure washer. The high
pressure may force water into the motor.
When using solvents or cleaning agents, verify that the motor and en-
coder cables, cable entry seals, O rings and motor paint are not dam-
aged.
Checking/running in the holding
brake
Occasional braking while the load moves helps to maintain
the holding torque of the holding brake. If the brake does
not work mechanically for an extended period of time, parts
of the holding brake may corrode. Corrosion reduces the
holding torque.
The holding brake is factory run in. If the brake does not work mechan-
ically for an extended period of time, parts of the holding brake may cor-
rode. If the holding brake does not have the holding torque indicated in
the technical data, it must be run in again.
쮿 The motor is dismounted. The holding brake is applied.
왘 Check the holding torque of the holding brake using a torque
wrench.
왘 Compare the value to the specified holding torque of the holding
brake when it was delivered. See Table 3.1 "Technical data holding
brake" in chapter 3.10.1 "Holding brake"
왘 If the holding torque of the holding brake considerably differs from
the specified values, manually rotate the motor shaft by 25 rotations
in both directions.
왘 Repeat the process. Contact your sales office if you cannot restore
the original holding torque by repeating the process 3 times.
Replacing the rolling bearing The customer must not replace the rolling bearing. The motor will be
partially demagnetized by this procedure and lose power.
@ WARNING
UNEXPECTED MOVEMENT
If the approved ambient conditions are exceeded, external sub-
stances from the environment may penetrate and cause unexpected
movement or equipment damage.
• Verify that the ambient conditions are met.
• Do not allow seals to run dry.
• Keep liquids from getting to the shaft bushing (for example in
mounting position IM V3).
• Do not expose the shaft sealing rings and cable entries to the
direct spray of a pressure washer.
Failure to follow these instructions can result in death, serious
injury or equipment damage.