Nilfisk RS 502 Betriebsanleitung Seite 159

Problem
Alarm buzzer
Always on continuously
Never on continuously in case of alarm
Always on
Never on
Steering system
The machine does not move straightforward
The steering is hard
Brakes
The parking brake is not effi cient
The parking brake is engaged but it is not
indicated
The machine brake system is not effi cient
Stability
When the machine moves the stability is
reduced
Possible cause
There is an alarm in the system
The display output is damaged/shorted
The display does not work
The buzzer is damaged/disconnected
The F3.5 electronic board fuse is open
The safety electronic board is damaged/shorted
The parking brake is not engaged when the key
is turned to ON and the operator is not on the
driver's seat
The parking brake microswitch is damaged/open
on safety electronic board
The driver's seat microswitch is damaged/open on
the safety electronic board
The buzzer is damaged/disconnected
The F3.5 electronic board fuse is open
The parking brake input on safety electronic board
is always present
The driver's seat microswitch input on the safety
electronic board is always present
The rear axle toe-in is incorrect
The power steering is faulty
The priority valve is faulty
The steering wheel drive hydraulic cylinder is
faulty
The brake is misadjusted
The warning light is off/always on because it has
not been adjusted or the microswitch is faulty
The brake fl uid level is low
The braking masses are worn or greasy
There is air in the line
The drum brake cylinder is faulty
The brake fl uid pump is faulty
The tyres are not properly infl ated
RS 502
USER MANUAL
Check the alarm/reset
Replace/reset
Replace
Replace/connect
Replace
Replace/reset
Engage the parking brake and the operator
must sit on the driver's seat
Replace/connect
Replace/connect
Replace/connect
Replace
N is shown on the display
Check the driver's seat microswitch
Adjust
Replace
Replace
Replace
Adjust
Adjust or check the connection (display)
Check the brake fl uid level
Replace
Bleed the system
Replace
Overhaul
Check the tyre pressure
33019741(2)2009-12 A
ENGLISH
Remedy
47