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7
Maintenance/repair
7.3
Maintenance
)
Note!
Brakes with defective armature plates, cheese head screws, springs or flanges
must be replaced completely.
Please observe the following for inspections and maintenance operations:
| Remove impurities through oil and grease using brake cleaning agents, if
| After replacing the rotor, the original braking torque will not be reached until
7.3.1
Checking the rotor thickness
}
Danger!
The motor must not run during the check.
1. Stop motor and control system!
2. Remove the motor cover and seal ring, if mounted.
3. Measure the rotor thickness using a caliper gauge.
4. Compare the measured rotor thickness with the minimally permissible rotor thickness
(^ 15).
5. If necessary, replace the complete rotor. See ^ 43 for description.
7.3.2
Check air gap
}
Danger!
The motor must not run during the check.
1. Stop motor and control system!
2. Check the air gap "s
using a feeler gauge (^ 15).
3. Compare the measured air gap with the maximum permissible air gap "s
15).
4. If necessary, adjust the air gap to "s
necessary, replace brake after finding out the cause of the contamination.
Dirt deposits in the air gap between stator and armature plate impair the
function of the brake and must be removed.
the run−in operation of the friction surfaces has been completed. After
replacing the rotor, run−in armature plates and flanges have an increased
initial rate of wear.
" near the fixing screws between armature plate and stator
Lü
" (^ 26).
Lürated
j | BA 14.0197 | 11/2010
i
" (^
Lümax.
41
Capítulos
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