50
Operating Instructions – AC Motors DR / DV / DT / DTE / DVE / Asynchrounos Servo Motors CT / CV
8
Inspection / maintenance of the BMG61/122 brake
Inspection / Maintenance
BMG61/122 brake without encoder mounting, set the working air gap
1. Isolate the motor and brake from the supply, safeguarding them against
unintentional power-up.
2. Remove the following:
– Remove the forced cooling fan, if installed (
→
Sec. "Preliminary work for motor
and brake maintenance")
– Flange cover or fan guard [27]
3. Push the rubber sealing collar aside [5]
– Release the clamping strap to do this, if necessary
– Extract the abraded matter.
4. Measure the brake discs [6], [10]:
If the brake disc
≤
12 mm, change it (
→
Sec. "Changing the BMG 61/122 brake disc),
otherwise
5. Loosen the setting sleeve [9] by turning it towards the bearing end shield
6. Measure the working air gap A (
→
following figure)
(use a feeler gauge and meausure at three points offset by 120° between the
pressure plate [13] and the magnet [14])
–
7. Tighten the hexagon nuts [16]
– Until the working air gap is initially 0.25 mm
8. Tighten the setting sleeves [9]
– Against the magnet [14]
– Until the working air gap is set correctly (
→
Sec. "Technical Data")
9. Refit the rubber sealing collar [5] and re-install the dismantled parts
01957AXX
A
.