Nilfisk-ALTO RS 850 - Manual (Page 159)

USER MANUAL ENGLISH
RS 850 33014576(4)2008-02 A 45
Problem Possible cause Remedy
HOPPER AND RELEVANT LID
The hopper does not lift/dump The control valve assembly is stuck Repair
Open push-button Replace
The fuse is blown Replace
Open safety push-button Replace
Activated broom switch Deactivate
The hopper does not return to horizontal
position/lower The cylinder gaskets are worn Overhaul the cylinders
The fuse is blown Replace
Open push-button Replace
Open safety push-button Replace
Relay board failure Replace
Burned solenoid valves Replace
HOPPER AND RELEVANT LID
The hopper lid does not open/close Lack of tension in the actuator Repair the electrical system
Open control push-button Replace
Misadjusted actuator cams Adjust the actuator cams
The actuator is faulty Replace
DUST CONTROL SYSTEM NOZZLES
No water from the nozzles The water fi lter is clogged Clean/replace
The nozzles are clogged Clean
No water to the nozzles The water pump relay is burnt Replace
The pump is not operating Repair/replace
The water pump switch is deactivated Activate
The fuse is blown Replace
The water pump relay is burnt Replace
The water pump does not stop The fl oat is stuck Repair
Incorrect installation of the fl oat Install correctly
STEERING SYSTEM
The machine does not move straightforward Misadjusted rear axle toe-in Adjust
The steering is hard The power steering is faulty Replace
The priority valve is faulty Replace
The steering wheel drive hydraulic cylinder is
faulty Replace
BRAKE SYSTEM
The machine brake system is not effi cient The brake fl uid level is low Check the brake fl uid level
The braking masses are worn or greasy Replace
There is air in the line Bleed the system
The drum brake cylinder is faulty Replace
The brake fl uid pump is faulty Overhaul
The parking brake is not effi cient The brake is misadjusted Adjust
STABILITY
When the machine moves the stability is
reduced The tyre pressure is incorrect Check the tyre pressure
WHEELS
The rear wheels are noisy The wheel bearings are worn Replace