5
Troubleshooting
The determination of the causes of existing defects and their elimination always require increased
attention and caution. If possible, switch off the main switch or pull out the mains plug before
proceeding.
Some of the most frequent defects and their causes are listed as follows. In case of other defects, contact
your dealer or MAFELL directly.
DefectCause
Troubleshoot
ing
Machine cannot be switched on. Mains cable not connected.
Insert coupling plug of the mains cable
into the socket of the switch box.
Main switch in "off" position.
Switch on the main switch and start the
machine.
Power failure on one or several Check internal power supply.
phases.
Emergency off button has been Unlock the emergency off button by turn-
pressed.
ing it left and switch the machine on.
Machine cover not closed.
Close cover.
Mode select switch set to position Set mode select switch to position "2" or
"0" or "1".
"3" according to the cutting to be made.
Overload protection has reacted. Eliminate the cause of the overload, wait
until motor has cooled down and switch
on again the motor protection switch
inside the switch box.
Machine switches itself off
Overload protection has reacted Determine and eliminate the cause of
while cutting is in progress.
caused, for instance by power
the overload. Before switching on again,
failure on one or several phases. the motor protection switch has to be
switched on.
Required cutting has not been Incorrect machine settings.
Check settings according to the re-
carried out correctly.
quired cutting (see section 3.4 to 3.8).
Irregular workpiece surface.
The cutting edges of the reversi- Turn or replace reversible knives (see
ble knives became blunt.
section 4.1).
Chip ejection blocked.
Timber too damp or extended
Remove chips from below the ejection
operation without removal of
shafts of the machine.
chips.
Machine set for operation with
Open flaps at the ejection shafts (see
extraction.
section 2.4).
Hose connector blocked during
Extraction speed at the hose con- Increase air velocity at the hose con-
operation of extractor unit.
nectors too low.
nectors to at least 20 m/s (65.6 ft/s).
Deceleration time of the cutting
Defective brake or brake linings Have the brake checked by the MAFELL
tool exceeds 10 seconds.
worn.
after-sales service.
No or irregular feeding action
Slipping clutch worn out or set
Adjust slipping clutch by one tooth (see
under load.
too low.
page 70, ill. 19).
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