INSTRUCTIONS FOR USE
33015122(1)2006-02
29
TROUBLESHOOTING
The following table shows the most common problems that may arise during the use of the machine, the possible causes and
the suggested remedies to solve them.
For explanation or information, contact a Nilfisk-Advance Service Center.
PROBLEMS AND REMEDIES
WARNING!
The suggested remedies must be performed by qualified personnel, according to the instructions of this
Manual, if present, otherwise contact a Nilfisk-Advance Service Center, where it is possible to consult the
Service Manual.
Problem
Possible cause
Remedy
BROOMS
The brooms do not clean correctly
The brooms are not adjusted correctly
Adjust
The brooms do not rotate
Broom speed is not correct
Adjust the speed
Oil leaks from the hydraulic system
fittings/hoses
Repair/replace
Hydraulic motor failure
Replace
The accessory hydraulic pump does not
pressurize the oil in the circuit
Check the oil pressure in the hydraulic
system
SUCTION FAN
The suction fan is noisy
Not-lubricated fan bearings
Lubricate
Worn fan bearings
Replace
Hydraulic motor failure
Repair
The suction fan rotates but suction is not
efficient
Clogged dust filters
Clean
Clogged suction pipe
Clean
Cut/torn suction pipe
Replace
Broken or wrongly positioned gasket between
the suction inlet and the hopper
Replace/adjust
Lack of pressure in the suction fan motor
drive pump
Adjust the pump pressure
The suction fan does not rotate
Locked distributor
Repair
Motor failure
Replace
Pump failure
Replace
SUCTION INLET AND SKIRT
The suction inlet does not collect debris
efficiently
The suction fan is not engaged
Engage the suction fan
Suction inlet incorrectly positioned
Check the suction inlet and skirt height and
operation
The suction inlet does not lift
Locked distributor
Repair
Worn cylinder gaskets
Overhaul the cylinder
Lack of pressure in the hydraulic system
Check the pump pressure
The suction inlet does not lower
Lack of pressure in the parachute valve
Check the suction fan distributor pressure
The skirt opening force is not sufficient
Incorrect skirt opening pressure
Adjust the opening pressure
The skirt does not open/close
Deactivated switch
Activate
Burned solenoid valve
Replace
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