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USER MANUAL
12 33014817(2)2006-06 A
PROBLEMS AND REMEDIES
The following table shows the most frequent problems that may arise during the use, the possible causes and the suggested
remedies to solve them.
PROBLEMS AND REMEDIES
WARNING!
When applying a recommended solution, always follow the instructions relating to it.
NOTE
Do not hesitate to contact Nilfisk-Advance if a problem cannot be solved by following the instructions
provided.
PROBLEM CAUSE REMEDY
Heavy material not collected/traces of dirt left
behind during use
Excessive drive speed Decrease drive speed
Light print Adjust trace
Worn out broom Replace brooms
Broom bristles bent or tangled with steel wire,
ropes etc.
Remove any tangled material
Excessive amount of dust left on the ground or
coming out of skirts
Fan off Switch on the fan
Clogged filters Clean filters
Material is thrown forward Broken skirt gasket Replace
Engine fails to start See Troubleshooting in the engine Manual
Machine power is reduced
Insufficient pump oil feed
Check by-pass screw tightening
Check pump pressure (16 to 20 Bar)
Overhaul motor
Worn motors Overhaul pump
The machine fails to run
Open by-pass Check by-pass screw tightening
Faulty pedal control Check pressure/replace pedal
No power to pump or motors
Overhaul motor
Overhaul pump
Machine fails to brake
No brake fluid Top up fluid tank
Brake fluid pump failure Overhaul pump
Air inside the system Bleed system
Jaw cylinders failure Replace cylinders
Worn or greasy brake lining Replace brake lining
Steering unit hard to control Locked power steering Replace power steering
Model with hydraulic steering Priority valve failure Overhaul/replace priority valve
Hopper fails to lift/lower
Locked distributor Check distributor
Locked solenoid valve Check voltage, check operation
Worn cylinder gaskets Replace gaskets
Waste loss from hopper Broken hopper gasket Replace
Filter shaker fails to operate
Broken push-button Replace
Blown fuse Replace
Excessive motor absorption causes:
– Worn carbon brushes
– Dirty or worn bearings
– Burnt armature or winding
Replace
Replace
Replace
Blown filter shaker fuse
Excessive motor absorption (see above)
Faulty fuse Replace
Shorted cables Check system
Noisy fan Hydraulic motor failure Overhaul motor
Fan fails to operate No pressure to pump Check pump pressure
Hydraulic model
Locked distributor Check distributor
Motor failure Overhaul motor
Skirt fails to open
No pressure to cylinder Check cylinder
Locked linkage Check linkage
Skirt gasket lifted by broom Skirt gasket too long Shorten/replace
Poor suction
Clogged pipe Clean pipe
Poor pressure to fan motor Check pressure
Motor failure Overhaul motor
Clogged or broken closed pocket filter Clean/replace filter
Brooms fail to turn
No pressure to motors
Check gear pump pressure (replace gear
pump)
Locked distributor Check/replace motor
Check distributor