Troubleshooting (for the user)
PROBLEM
No power supply voltage
Insufficient voltage for unstable connections
Motor does not start
Faulty switch
Faulty capacitor
Faulty motor
Excessive cable length or unsuitable cross section
Unstable connections
Insufficient motor speed
Driving belt at a wrong tension
Faulty capacitor
Faulty motor
Excessive cable length or unsuitable cross section
Unstable connections
The drum speed is not
Driving belt too tightened
enough
Worn-out bearings
Faulty capacitor
Faulty motor
Wrong or unstable power supply
Excessive cable length or unsuitable cross section
Too much weight on the machine
Dirty motor
The thermal protection inter-
venes too much frequently
The fan is not turning properly
Faulty thermal switch
Faulty motor
The drum doesn't come off
The drum lifting rod not properly adjusted
enough from the floor
Unsuitable or worn-out abrasive
Insufficient drum pressure
The abrasive doesn't sand
Dust prevents adjusting the drum pressure
enough or its speed is not
Driving belt at a wrong tension
enough or it doesn't keep
the right place
Worn-out driving belt or pulleys or bearings
Worn-out drum
Faulty abrasive
Incorrect wheels adjustment
Bearings, pulleys or shafts dirty or faulty
The floor surface is not
Driving belt and wheels dirty, badly adjusted or faulty
regularly sanded
Drum surface dirty or faulty
Drum surface out of roundness
Worn-out or unsuitable abrasive
Scorching on work surface
Excessive pressure on drum
Dust bag more than 1/3 full
Dust bag dirty or with blocked pores
Insufficient dust collection
Vacuum ducts and/or pipes obstructed
Suction bearings and shaft in bad conditions
Paper bag put in the wrong direction
The paper bag breaks down
while working or while put-
Mistake while putting the paper dust bag on the ma-
ting it on the machine
chine
Paper bag more than 1/3 full
CAUSE
Bona Capricorn Manual
SOLUTION
Check power supply or try on a different job-site
Contact an authorized Bona dealer
Contact an authorized Bona dealer
Replace it
Contact an authorized Bona dealer
Use cables of suitable length and cross section
Contact an authorized Bona dealer
Set it at a right one
Contact an authorized Bona dealer
Contact an authorized Bona dealer
Use cables of suitable length and cross section
Contact an authorized Bona dealer
Set it at a right tension value
Contact an authorized Bona dealer
Replace it
Contact an authorized Bona dealer
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 autho-
rized Bona dealer
Contact an authorized Bona dealer
Contact an authorized Bona dealer
Adjust it at the right position
Replace the abrasive
Increase drum pressure
Remove the dust
Set it at a right tension value
Replace the belt or contact an authorized Bona dealer,
for pulleys and bearings replacement
Replace it
Replace the abrasive
Correct the wheels position
Clean them or contact an authorized Bona dealer, for
replacement
Clean, adjust or replace them
Clean, correct or replace the drum
Replace the drum and remember never to let the drum
laying on the floor while the machine is not working in
order to avoid ovality
Replace the abrasive
Decrease sanding pressure
Empty the fiber bag or change the paper bag
Shake out the dirt and wash the fiber bag or change
the paper bag
Clean air ducts
Contact an authorized Bona dealer
Change the paper bag direction: the side with the full
sign must be towards the drum
While putting the paper bag on the machine, stop
before the black ring: this must stay outside the paper
bag.
Change the paper bag
EN
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