Trouble-Shooting - struers Unitom-50 Benutzerhandbuch

Error
Error Messages in the Display
Motor overload.
Position error.
Guard open.
No cooling.
Display is blank.
Problems that require a Struers Service Technician
Unable to lock guard.
Pump overload.
Unitom-50
Instruction Manual

4. Trouble-Shooting

Explanation
The cutting motor has been
overloaded for a period and the
thermo switch has stopped the
motor.
The feed speed has been reduced
to the lowest speed (0.05mm/s), by
the user or automatically. In spite of
this, the feed speed could not be
maintained. The cutting process
stops.
The cutting arm has been blocked
physically.
The desired cutting operation
cannot start before the guard has
been closed.
The cooling valve is not in cooling
position.
The backlight is automatically
switched off.
The safety lock in the guard is out of
order and it is possible to open the
guard during the cutting process.
The safety switch still stops the
cutting motor and the cutting
process.
The motor of the recirculation pump
has been overloaded. The cutting
process stops.
Action
Open the protection guard and wait
until the cutting motor has cooled
down. The machine can be re-
started when the error message
disappears in the display.
Choose a cut-off wheel which is
more suitable for the material to be
cut.
Check whether the cutting arm
actually is blocked physically, e.g.
by the flange or by the workpiece.
Close the guard and try again.
Check cooling valve setting.
Press any key to reactivate the
backlight.
Press the protection guard
completely down. If this does not
help:
Call a Struers service technician.
The mechanical safety switch still
functions, but the safety lock must
be repaired as soon as possible.
The pump has probably been
blocked with cutting debris. Clean
the pump, and call a Struers service
technician to release the thermo
relay.
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