for human contact during normal operation is
minimized.
14 Troubleshooting
Problem
Power tool bumps/
does not run smoothly
over the surface.
Power tool does not
stop at ceiling.
Excessive material re
moved from workpiece.
Surface quality is not
optimal.
Scratch marks on the
surface.
Extraction power of the
power tool is insuffi
cient.
Possible causes
Suction power is set incor
rectly.
Interface pad is damaged or
deformed.
Speed is set incorrectly.
Suction power is set incor
rectly.
Grit on abrasive is too coarse. Select a finer grit, e.g. P240, P320.
Extraction power is insuffi
cient.
Suction power of the power
tool is too strong.
Grit on abrasive is too coarse. Select a finer grit, e.g. P240, P320.
Speed of the power tool is too
high.
Spackling paste with a high
percentage of filler/soft filler.
Incorrect abrasive grit.
Drying times of the spackling
paste not observed.
Suction power of the power
tool is set incorrectly.
Spackling paste with a high
percentage of filler/soft filler.
Backing pad is placed down
on the surface at an angle.
Backing pad brake is worn.
Holes in the interface pad or
backing pad are clogged.
Incorrect abrasive.
Abrasive hole pattern does
not match the interface pad
hole pattern.
Remedy
Adjust the suction power until the cause has
been rectified, see Section 8.5.
Replace the interface pad, see Section 8.3.
Increase the speed.
Increase the suction power, see Section 8.5.
See measures in the section entitled "Extraction
power ... is insufficient."
Reduce the suction power until the cause has
been rectified, see Section 8.5.
Reduce the speed, see Section 8.1.
Reduce the speed, see Section 8.1.
Select a finer grit, e.g. P240, P320.
Read the technical data sheets and manufactur
er's recommendations.
Adjust the suction power until the cause has
been rectified, see Section 8.5.
Select a finer grit, e.g. P240, P320.
Place the backing pad parallel to the surface.
Have the backing pad brake replaced by an au
thorised customer service workshop.
Vacuum the interface pad, backing pad and ex
traction channels.
Always use original Festool abrasives with the
matching hole pattern.
Apply abrasive correctly, see Section 8.2.
English
21