Nilfisk-Advance SR 1100 P/B, Service Manual

Page: 83 / 120

17
2.1- THE MACHINE IS NOT MOVING IN FORWARD OR REVERSE
Further observations:
- only traction is not working (all other functions are responding to controls)
- the pedal is correctly pressed
- the forward gear (or reverse gear) is correctly engaged with the
multifunction lever M
M
M MA
A
A A/
/
/ /M
M
M MIIII
T T T Trrrro o o ou u u ub b b blllle e e e S S S Sh h h ho o o oo o o ottttiiiin n n ng g g g
a a
a a)))) Check the function and electric connections of microswitch C
C
C C2
2
2 2 lodged
inside the seat
b b
b b)))) Check the function and electric connections of microswitch C
C
C C3
3
3 3 lodged
inside the accelerator pedal box
c c c c)))) Check the function and electric connections of microswitches M M M MA A A A and M M M MIIII
lodged inside the multifunction lever (see table 5.5-1 in Section 5)
d d
d d)))) Check the adjustment of the acceleration potentiometer P
P
P P1
1
1 1 (see the
acceleration potentiometer P P P P1 1 1 1 setting values and its reset procedure in
paragraphs 5.2 and 5.3 in Section 5)
e e
e e)))) If all previous inspections didn’t allow the failure removal, check the drive
motor M
M M M5 5 5 5 efficiency (see drawing 1 and table 5.1-1 “electric motors
current draw specifications”)
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