INTORQ BFK455, Руководство по эксплуатации

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Maintenance/repair 7
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j
| BA 14.0196 | 05/2013
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7.3.2 Checking the air gap

Danger!
The motor must not run during the check.
1. Stop motor and control system!
2. Measure air gap ”s
L
” near the fixing screws between armature plate and stator using a
feeler gauge.
3. Compare the measured air gap with the maximum permissible air gap ”s
Lmax.
”,

16.
4. Always replace both rotors if required.
7.3.3 Rotor replacement

Danger!
The brake must be free of residual torque.
1. Switch off voltage!
2. Disconnect the supply cable.
3. Loosen the screws evenly and remove them completely.
4. Remove the complete stator from the end shield. Observe the supply cable.
5. Pull the complete rotor off the hub.
6. Check hub teeth.
7. Replace the hub as well if worn.
8. Check the friction surface at the end shield. In case of strong scoring at the flange,
replace the flange. If scoring occurs at the end shield, re-finish end shield.
9. Measure rotor thickness (new rotor) and sleeve bolt head with a caliper gauge.
10. Calculate the gap between the stator and the armature plate as follows:
Gap = rotor thi s
LN
- head height
”s
LN
”

16
11. Unscrew the sleeve bolts evenly until the calculated gap between stator and armature
plate is reached.
12. Install and adjust new rotor and stator,

23.
13. Reconnect the supply cable.