HBM SK12, Mounting Instructions, Page: 31 / 48

31
SK5, SK6, SK12
HBM A0842-2.0 de/en
19 Mounting (see also safety notes)
The slipring assemblies SK6 and SK12 have to be fitted, that rough dirt, dust,
humidity, oil, solvents and their gases can not reach the slipring or get into the
case. They could influence the slipring transmission or e.g. reduce the resi-
stance to ground of a connected measuring point.
19.1 Mounting with mounting plate (see Fig. 8.3)
1. Turn mark on ring (15) to position to the stop: brushes are lifted.
2. Loosen licking screw (9) at the front of slipring head.
3. Carefully pull away stator from rotor (14).
4. Unscrew the four Allan screws (2) at the inner front of the rotor and remove
mounting plate (1).
5. lf the rotor is fixed by the mounting plate suitable through holes for M5 or
M6 screws haveto be bored with proper countersinking. Note: Headsof the-
fixing screws shall be completely sunk in plate.
6. Fix the mounting plate properly centered and smoothly running to the front
of the shaft. lf a hollow shaft is used with the connection wires within the
shaft these should be brought out through the four slots (12) of the moun-
ting plate (1).
7. Connect rotor again with mounting plate with the screws, Slide on stator
with brushes lifted and fasten locking screw properly.
8. Prevent rotation of the stator with the mounting bracket (11). This must not
be rigidly fixed at some support because the slipring might be damaged if
the shaft beats Le. performs slight radial or axial move, ents. One either al-
lows the rnounting bracket to press against a stop or fixes it with some fle-
xible member. For fastening of the mounting grid only screws M 3 x 6 shall
be used, otherwise the inner parts of the slipring head might be damaged.
The air vents beside the mounting bracket shall point in that direction
where the least dirt comes from i.e. in most cases downward.