Nilfisk RS 851 Instructions D'origine page 161

Problem
SUCTION FAN
The suction fan is noisy
The suction fan turns but it is not effi cient
The suction fan does not turn
SUCTION INLET AND SKIRT
The suction inlet does not collect debris
effi ciently
The suction inlet does not lift
The suction inlet does not lower
The suction inlet does not shift sideways
The skirt opening force is not suffi cient
The skirt does not open/close
Possible cause
The fan bearing are not lubricated
The fan bearings are worn
The motor is faulty
The closed pocket fi lter is clogged
The suction hose is clogged
The suction hose is cut/torn
The gasket between the suction inlet and the
hopper is broken or misadjusted
There is no pressure at the suction fan motor
drive pump
The distributor is stuck
The motor is faulty
The pump is faulty
The engine is over revving
The suction inlet position is not correct
There is an open in the electrical contact
The distributor is stuck
The cylinder gaskets are worn
There is no pressure at the hydraulic system
The fuse is burned
Open lifting push-button
There is an open in the joystick safety push-
button
The relay electronic board is faulty
The solenoid valve is burned
The suction fan is off
There is no pressure at the parachute valve
Lack of pressure in the distributor solenoid
valve
The fuse is burned
The broom switch is off
Open lowering push-button
There is an open in the joystick safety push-
button
The relay electronic board is faulty
The solenoid valve is burned
Lack of pressure in the cylinder because of
worn gaskets
The fuse is burned
Open left shifting push-button
Open right shifting push-button
Open safety push-button
The relay electronic board is faulty
The solenoid valve is burned
The skirt opening pressure is incorrect
The switch is off
The solenoid valve is burned
RS 851
USER MANUAL
Lubricate
Replace
Repair
Clean
Clean
Replace
Replace/adjust
Adjust the pump pressure
Repair
Replace
Replace
Decrease the engine speed to 2,050 rpm
Check the suction inlet and skirt height and
operation
Repair the electrical system
Repair
Overhaul the cylinder
Check the pump pressure
Replace
Replace
Replace
Overhaul
Replace
Turn on
Check the suction fan distributor pressure
Check the pressure
Replace
Turn on
Replace
Replace
Overhaul
Replace
Overhaul the cylinder
Replace
Replace
Replace
Replace
Replace
Replace
Adjust the opening pressure
Turn on
Replace
33018305(3)2010-01 A
ENGLISH
Remedy
45