21
Operation manual STORNELLO
®
Emergency situations (for the user)
PROBLEM
CAUSES
SOLUTIONS
The motor does not start
No power supply voltage
Check power supply or try on a
different job-site
Insufficient voltage for unstable
connections
Check power supply or try on a
different job-site
Faulty switch
Contact an authorized K&T dealer
Faulty motor
Contact an authorized K&T dealer
Insufficient motor speed
Excessive cable length or unsuitable
cross section
Use cables of suitable length and
cross section
Unstable connection
Check power supply or try on a
different job-site
Faulty motor
Contact an authorized K&T dealer
Insufficient speed disc
Excessive cable length or unsuitable
cross section
Use cables of suitable length and
cross section
Unstable connection
Check power supply or try on a
different job-site
Worn-out bearings
Contact an authorized K&T dealer for
replacement
Faulty motor
Contact an authorized K&T dealer
Disc does not touch the working
surface
The height of disc is not correct
Add shim rings between the plate and
white nylon washer
The inclination of disc is not correct
After adjusting the height adjust the
pressure of the disc acting on the
handwheel control pressure
The abrasive smoothes not
enough or its speed is not
enough, or does not remain in the
correct position
Consumed or unsuitable abrasive
Change the abrasive
Insufficient pressure on the disc
Increase pressure on the disc
Sanding dust not allow the
adjustment of the pressure on the
disc
Remove sanding dust
Consumed sanding disc
Replace the sanding disc
The working surface is not
regularly sanded
Faulty abrasive
Change the abrasive
Wrong adjustment of the spherical
wheels
Adjust the spherical wheel in the
correct position
Faulty or dirty motor shaft
Clean it or Contact an authorized K&T
dealer for replacement
Dirty, incorrectly adjusted or faulty
spherical wheels
Clean, adjust or replace them
Dirty or faulty disc surface
Clean or replace the disc
The working surface turns
scorching
Consumed or unsuitable abrasive
Change the abrasive
Excessive pressure on the disc
Decrease pressure on the disc
The dust collection is not enough
Dust bag more than 1/3 full
Empty the bag
Dust bag dirty or with blocked pores
Shake out the dirt and wash the cloth
bag or change it
Obstructed vacuum ducts and/or pipe
Clean them
The motor shaft or suction chamber is
damaged
Contact an authorized K&T dealer for
replacement
The assembly of bust bag is not
correct
Check the assembly of dust bag
Summary of Contents for STORNELLO 7699950001
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