Mafell LO 55 Traduction De La Notice D'emploi Originale page 34

Machine stops while milling
Speed decreases during milling
Wrong speed
Excessive speed, soft start or
speed control missing, braking
no longer possible
Unclean milling pattern
Milling cutter moves up/down in
the collet or stops
Burn marks on the milled
surfaces
Machine does not brake
Excess temperature
No mains voltage
Defect at the machine
Cause must be determined by
the customer service.
Overload switch-off
Excessive chip removal
Feed rate too fast
Blunt milling cutter
Wrong speed level set, speed
reduction button is pressed (LED
display flashes)
Defective electronic system
Cause must be determined by
the customer service.
Blunt milling cutter
Uneven feed, wrong speed
Collet soiled
O-ring in collet damaged
Milling cutter unsuitable for the
work step or blunt, wrong speed,
feed rate too low
Braking has taken place more
than four times within a time
period of 45 seconds. Brake lock
is active.
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Switch on machine and allow to
cool in cooling mode
Check mains-side pre-fuse
Take the machine to the
MAFELL customer service repair
shop or have it checked by a
skilled electrician.
Switch the machine on again
Reduce chip removal
Reduce feed
Grind or replace milling cutter
Adjust level and increase speed;
adjust speed by means of speed
button below the LED display
Take the machine to the
MAFELL customer service repair
shop or have it checked by a
skilled electrician.
Grind or replace milling cutter
Mill with constant pressure and
reduced feed, adjust speed
Clean collet and replace O-ring
Grind or replace milling cutter
Adjust speed and feed
After expiry of 45 seconds from
the first braking, another braking
is released. To avoid a brake
lock, increase the brake interval
to at least 10 seconds.