Scheppach PLM1800

www.scheppach.com
36
|
GB
17. Trouble shooting
Problem Possible Cause Remedy
Machine cannot be
switched on.
• No power supply.
• Carbon brush worn.
• Check power supply.
• Take machine to your service point.
Machine does not work or
stops suddenly.
• Power cut.
• Motor or switch defective.
• Power cut.
• Motor or switch defective.
Machine stops during
planing.
• Planing blade blunt/worn.
• Overload switch has tripped.
• Too much chip removal.
• Replace or sharpen blade.
• Switch on the motor again once it has cooled.
• Reduce chip removal.
Workpiece jams during
thicknessing.
• Cutting depth too great. • Reduce cutting depth and machine the work-
piece in several passes.
Speed decreases when
planing.
• Too much chip removal
• Blunt knives.
• Reduce chip removal.
• Replace knives.
Unsatisfactory surface
nish.
• Planing blade blunt/worn.
• Planing blade lled with chips.
• Uneven feed.
• Replace or sharpen blade.
• Remove chips.
• Feed the workpiece with constant pressure
and at reduced speed.
Machined surface too
rough.
• Workpiece contains too much
moisture.
• Dry workpiece.
Machined surface
cracked.
• Workpiece was machined
against the grain.
• Too much material planed at
one pass.
• Machine the workpiece from the opposite
direction.
• Machine the workpiece in several passes.
Workpiece speed too low
during thicknessing.
• Thicknesser table resinous
• Feed roller too slippery
• Clean and apply glide wax
• Gently scour with sand paper
When thicknessing, chip
ejection obstructed (with-
out dust extractor).
• Too much chip removal.
• Blunt knives.
• Wood too humid.
• Reduce chip removal.
• Replace knives.
• Dry workpiece.
With surface planing and
thicknessing, chip ejection
obstructed (with dust
extractor).
• Suction performance too
weak.
• Use a dust extractor unit having an airow rate
at the suction connection of at least 20 m/s.