Nilfisk-Advance SR 1100 P/B, Service Manual

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b b
b b)))) If the above mentioned fuse has blown, the cause must be discovered.
Check that the main broom up/down movement is not blocked by the
presence of cables, ropes or strips wrapped around the main broom hubs
c c
c c)))) If no obstacle is preventing the main broom up/down movement, check
the efficiency both of the jack motor (electric motor M
M M M6 6 6 6, microswitches C C C C5 5 5 5
and C C
C C6
6
6 6) and of the main electronic board S
S
S SK
K
K K3
3
3 3 (in fact the jack motor
controller is lodged inside the electronic board S S
S SK
K
K K3
3
3 3).
d d d d)))) If necessary replace the jack motor, and the microswitches and/or the
electronic board S
S S SK K K K3 3 3 3.
2.5- THE MAIN BROOM IS NOT TURNING (SEE ALSO PROBLEM 2-21: THE
MACHINE IS NOT SWEEEPING)
Additional observation: P1 (o P2) has been pressed and the Main broom
goes up/down
T T
T Trrrro
o
o ou
u
u ub
b
b blllle
e
e e ss s sh
h
h ho
o
o oo
o
o ottttiiiin
n
n ng
g
g g
a a a a)))) If the main broom electric motor (M M M M4 4 4 4) is turning correctly, check the
efficiency of the pulleys and of the transmission belt
b b
b b)))) If the motor is not turning, check the motor M
M
M M4
4
4 4 electric connection wires
c c c c)))) Check the efficiency of the motor M M M M4 4 4 4: it is possible to make a functioning
test using a 24 V battery, as shown in Drawing 1 (WARNING: use a fuse for
your protection); check motor M
M
M M4
4
4 4 current (Amp) draw according to what
specified in Table 5.1-1 in Section 5
d d
d d)))) If the motor M
M
M M4
4
4 4 is in order, the electronic board S
S
S SK
K
K K3
3
3 3 must be replaced.
W W W WA A A AR R R RN N N NIIIIN N N NG G G G
- during test the motor must be disconnected from the
electronic board
- during test the battery must be disconnected from the
machine
- use a protection fuse to prevent accident in the event
that the motor be failed in short circuit
Drawing.1