Mafell LO 55 Traduccion Del Manual De Instrucciones Originale página 31

9 Troubleshooting
Some of the most frequent defects and their causes are listed in the following chart. In case of other defects,
please contact your dealer or the MAFELL customer service directly.
Defect
Machine cannot be switched on
Machine switches off
automatically during idling
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
Burn marks on the milled
surfaces
Danger
Determining the causes for existing defects and eliminating these always requires
increased attention and caution. Pull the mains plug beforehand!
Cause
No mains voltage
Carbon brushes worn
Mains failure
Cooling mode completed
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
Milling cutter unsuitable for the
work step or blunt, wrong speed,
feed rate too low
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Elimination
Check the power supply and/or
press the main switch
Take the machine to the
MAFELL customer service repair
shop or have it checked by a
skilled electrician
Ensure power supply, release
switch trigger and press again
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
Grind or replace milling cutter
Adjust speed and feed