Possible Cause - Scheppach THM850 Originalbetriebsanleitung

15. Trouble Shooting
Problem
Machine cannot be
switched on.
Machine does not
work or stops sud-
denly
Machine stops
during planing.
Workpiece jams
during thicknessing
Speed decreases
when planing
70 | GB

Possible Cause

No power supply.
Carbon brush worn.
Chip extractor not
mounted
Power cut
Motor or switch de-
fective
Check microswitch
Planing blade blunt/
worn
Overload switch has
tripped
Check microswitch
Too much chip re-
moval
Too fast feed
Cutting depth too
great
Too much chip re-
moval
Too fast feed
Blunt knives.
www.scheppach.com
Remedy
Check power supply.
Take machine to your ser-
vice point.
Check fuse, check over-
load switch on machine.
Have the motor or switch
checked by an electrician.
Fit the chip extractor hood
so that the microswitch is
pressed.
Check fuses.
Due to the integrated
lowvoltage protection, the
machine does not restart
automatically. Upon return
of the voltage, the ma-
chine must be switched on
again.
Replace or sharpen blade
Switch on the motor again
once it has cooled
Fit the chip extractor hood
or bench lock so that the
microswitch is pressed.
Reduce chip removal.
Reduce infeed speed.
Reduce cutting depth and
machine the workpiece in
several passes
Reduce chip removal.
Reduce infeed speed.
Replace knives.