2. If the motor is force cooled (FV) on the
commutator side, dismantle the FV (LSK 1122
to 1604) and the inspection doors B, D or A.
3. Two labels (counter-sunk on the brush-holder)
locate the brush-holder in relation to the flange
(see fig. 10). These two labels should be set
opposite an inspection door B, D or A.
4. Loosen cables 1 & 2 for connection to the brush-
holder, inspection doors A and D.
5. Loosen screws 3 & 4 which hold the brush-
holder:
- CHC 6*16 for LSK 1122, 1124 & 1324,
- CHC 8*20 for LSK 1604,
- CHC 8*60 for LSK 1804.
6. Replace the brushes located opposite inspection
doors B, D and A.
7. Rotate the brush-holder by 90 degrees so that
brush C is accessible via inspection door B.
8. Change these brushes.
9.
Reposition the brush-holder in its original
position and check the position of labels 1 and 2.
10. Tighten screws 3 & 4 to hold the brush-holder
in position.
11. Tighten the connection, cable screws 1 & 2.
12. Run the brushes in following the running-in
procedure described in section 5.2 page 3 of the
general manual.
Once running-in is complete, check that :
• the brushes move freely in the brush-
holder casing;
• the brushes are 100% run in (the whole
surface coming into contact with the brush should
shine);
• check all the brushes in the line located
above the grindstone depending on the direction of
rotation.
• clean properly : blow through dry grease-
free compressed air.
13. Reassemble the forced ventilation unit and the
inspection doors.
8
LSK
D.C. motors
C
A
D
B
Screw 1
Screw 2
Screw 4
Screw 3
Cable 1
Brush-holder
Mark 1
Mark 2
Cable 2
▼
Brush-holder position
Flange seen from NDE side (transparent)
Fig. 9
Fig. 10
▼
Position of inspection doors, motor seen from
opposite side of drive (NDE flange)
