Bona Belt UX Manual De Funcionamiento Y Mantenimiento página 27

Troubleshooting (Cont.)
PROBLEM
The thermal protection inter-
venes too much frequently
The drum release lever is too
hard or doesn't stop at the high
position
The drum doesn't come off
enough from the floor
The abrasive belt
doesn't stay in its
position
The abrasive doesn't
sand enough or its
speed is not enough
The floor surface is not
regularly sanded
The floor surface turns
scorching
Insufficient dust collection
CAUSES
Wrong or unstable power supply
Excessive cable length or unsuitable
cross section
Too much weight on the machine
Dirty motor
The fan is not turning properly
Faulty thermal switch
Faulty motor
Release pin and spring not enough lubricated or
damaged
Lever sector plate or lever stop pin dirty, not
enough lubricated, damaged, worn-out or
broken
Wheels joint, between the two parts of
the drum lifting rod, not properly adjusted
Dust is locking the wheels support
Tensioner not properly adjusted
Spring of the tensioner not working properly
Excessively or irregularly worn tensioner
Worn-out or unsuitable abrasive
Drum pressure is not enough
Dust prevents adjusting the drum pressure
Driving belts at a wrong tension
Tensioner dirty or too worn-out
Worn-out driving belts or pulleys or bearings
Faulty abrasive belt
Not correct wheels position
Bearings, pulleys or shafts dirty or faulty
Driving belts and wheels dirty, badly adjusted or
faulty
Drum surface dirty or faulty
Worn-out or unsuitable abrasive
Excessive pressure on drum
Dust bag more than 1/3 full
Dust bag dirty or with blocked pores
Vacuum ducts and/or obstructed pipes
Suction bearings and shaft in bad conditions
SOLUTIONS
Try the machine on a different job-site
Use cables of suitable length and cross section
Remove any possible additional weight on the machine
Check if the motor is well clean and remove all
the possible dirt
Check if the fan is well screwed or contact an authorized
Bona dealer for fan bearings replacement
Contact an authorized Bona dealer
Contact an authorized Bona dealer
Lubricate them or contact an authorized Bona dealer for
replacement
Clean or lubricate them, or contact an authorized Bona
dealer for replacement
Adjust it at the right position
Clean it
Adjust it (check the alignment with the rubber drum)
Contact an authorized Bona dealer
Contact an authorized Bona dealer for replacement
Replace it
Increase the drum pressure
Remove the dust
Set them at a right one
Clean it or contact an authorized Bona dealer for
replacement
Replace the driving belts or contact an authorized Bona
dealer for replacement of pulleys and bearings
Change it
Adjust the wheels at a right position
Clean or contact an authorized Bona dealer for
replacement
Clean, adjust or replace them
Clean, correct or replace the rubber-coated drum
Replace the abrasive
Decrease sanding pressure
Empty the bag
Shake out the dirt and wash the bag
Clean air ducts
Contact an authorized Bona dealer
EN
Bona Belt UX Manual
27