WARNING
Maintenance and repair work may only be carried out by authorised service workshops.
Problem
Required vacuum
is not attained,
indicator on the
vacuum gauge [1-
2] in red sector.
Insufficient
vac-
uum during opera-
tion.
The vacuum pump
does not start.
12
Cause
Vacuum gauge faulty
Vacuum pump faulty
Hose and/or pipe connections are not
tight
Air filter partly blocked
More than 6500 ft (2000 m) above sea
level
Slide valve worn
Clamping unit not connected
Secondary hose not conntected/addi-
tional clamping unit 10 minutes has been
removed.
Clamping unit not seated correctly on the
base surface.
Unsuitable base surface (not airtight or
flat)
Rubber seal underneath the contact sur-
face shows signs of damage.
Foot valve faulty
Vacuum hose faulty or leaking
Vacuum pump faulty
Clamping unit does not form a seal with
the clamping plate.
Suction cup on the workpiece not com-
pletely sealed
Rubber seal underneath the contact sur-
face shows signs of damage.
Vacuum pump faulty
Mains cable is too small or too long.
Troubleshooting
Solution
Have the vacuum gauge replaced (Fes-
tool Service).
Have vacuum pump repaired or serviced
(Festool Service).
Check connections for leaks.
Replace the air filter.
Usage prohibited. Vacuum cannot be
attained, expect device malfunction!
Have the slide valve replaced (Festool
Service).
Connect the clamping unit.
Close the shut-off valve (see Preparing
for use in the ).
Position the clamping unit correctly on
the base surface.
Use a suitable base.
Replace the rubber seal.
Have the foot valve serviced.(Festool Ser-
vice).
Replace the vacuum hose; replace the
hose connector if necessary.
Have the vacuum pump repaired or
replaced (Festool Service).
Immediately stop working and remove
the workpiece;
Check the clamping plate and suction
cup.
Replace the rubber seal.
Have the vacuum pump repaired or
replaced (Festool Service).
Use a mains cable with sufficient dimen-
sions.