7.7 The motor stops
Can the motor/
grinding disc easily
be rotated by hand?
Attention! The machine
must be unplugged
and the grinding
tools removed.
Check the wires and
connections in the
electrical cabinet and the
motor connection box
with help from the wiring
diagram.
ACTION:
Reduce the load on the
motor. Check
the power source,
extension cable
dimensions and make
sure your grinding tool
selection is correct.
ACTION:
Replace the electric
motor.
ACTION:
Are the starting
and running capacitors
OK? Measure the
capacitance with a
multimeter.
Are the motor
windings OK? Measure
the inductance with help
from this workshop
manual.
Replace the electric
motor.
ACTION:
Replace the electronic
motor starter switch.
ACTION:
Replace the capacitors.
ACTION:
The electric motor stops
during operation.
ERROR:
Has the thermistor
fuse blown?
Has the fuse in the
power source blown?
Let the motor cool down.
The overload protection
is automatically reset
after a couple of
minutes.
ACTION:
Is the overload
lamp lit up when
trying to restart the
motor?
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
NO
YES
1022 - 002 -
Troubleshooting - 17
