31
Finding the causes of any troubles turned up and their remedy always demands extra attention and caution. Before starting
trouble-shooting, always pull the power supply plug.
In the following, some of the most frequent defects and their causes are listed. In case of any further defects, please call
your dealer.
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 switches automatically off
during idle run.
No mains supply.
Check fuses.
Due to the integrated low-voltage
protection, the machine does not re-
start automatically. Upon return of the
voltage, the machine must be switched
on again.
Machine stops during planing.
Overload protection reacts due to blunt
knives, infeed too fast, or chip removal
too thick.
Before work is continued, replace
knives or let cool down the motor.
Response of the overload protection.
Too much chip removal
Too fast feed
Blunt knives
Before continuing work, replace the
knives or wait for the motor to cool
down.
Planed surface not smooth.
Infeed too fast.
Blunt knives.
Irregular feed.
Reduce infeed speed.
Replace knives.
Apply constand pressure and reduce
feed.
When thicknessing, chip ejection
obstructed (without dust extractor).
Chip removal too important.
Blunt knives.
Wood too humid.
Reduce chip removal.
Replace knives.
When surface planing, chip ejection
obstructed (without dust extractor)
Chip removal too important.
Infeed to fast.
Blunt knives.
Wood too humid.
Reduce chip removal.
Replace knives.
With surface planing and thicknessing,
chip ejection obstructed (with dust
extractor).
Suction performance too weak.
Use a dust extractor unit having an
air-flow rate at the suction connection
of at least 20 m/s.
Rpm drops during planing.
Chip removal too important.
Reduce chip removal.
