7
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 or
stops during the milling process
Speed decreases during milling
Excessive speed, soft start
missing or speed control no
longer possible
Unclean milling pattern
Burn marks on the milled
surfaces
Machine switches off during
operation
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 or mains
voltage too low
Mains fuse defective
Carbon brushes worn
Mains failure
Machine overloaded
(Overcurrent shutdown)
Excessive chip removal
Excessive feed
Blunt router bit
Defective electronic system
Blunt router bit
Uneven feed
Router bit that is unsuitable for
the operating sequence or blunt
Voltage interruption
(undervoltage shutdown)
-25-
Elimination
Have power supply checked by
an electrician
Have fuse replaced by an
electrician
Take the machine to a MAFELL
customer service shop
Have mains-side pre-fuse
checked by an electrician
Switch machine off and on again
Reduce feed speed
Reduce chip removal
Reduce feed
Grind or replace router bit
Take the machine to a MAFELL
customer service shop
Grind or replace router bit
Mill with constant pressure and
reduced infeed
Grind or replace router bit
Switch machine off and on again