Mafell 991201, Translation Of The Original Operating Instructions

Page: 41 / 70

– 41 –
Fault Cause Remedy
Machine switches off during
machining. The overload protection trig-
gers, for example because of
failure of one or several mains
phases. Identify and remedy the cause
of the overload. Before swit-
ching the machine on, re-ac-
tivate the motor protection
switch.
The machining was not exe-
cuted correctly. Incorrect machine settings. Check the setting in accordan-
ce with the selected machi-
ning type (see sections 3.4
through 3.8).
Uneven workpiece surface. Tool blades of the reversible
knifes are blunt. Reverse or replace the rever-
sible knifes (see section 4.1).
Chip ejection clogged. Timber is too moist, or machi-
ne has been operated for too
long without chip removal. Remove the chips below the
vertical chutes of the machine.
Machine is set to operation
with dust extractor system. Open the shutters at the verti-
cal chutes (see section 2.4).
When operated with dust ex-
tractor system: connection no-
zzle clogged. Insufficient extraction rate at
the connection nozzles. Increase the air speeds at the
connection nozzles to at least
20 m/s (65.6 ft/s).
Slowing-down time of the mil-
ling tool is longer than 4 se-
conds. Brake defective, or brake
pads worn. Have the MAFELL customer
service replace the brake.
No or halting feed movement
under load. Safety clutch worn, or set to
an excessively low value. Tighten the safety clutch by
one sprocket (see page 79
Fig. 19).
6 Exploded drawing and spare parts list
The corresponding information in respect of spare parts can be found on our
homepage: www.mafell.com