Translation of the original operating manual
Drive units for flexible shafts
- 20 -
GB
List of faults
Malfunction
Type
Possible cause
Solution
Tool doesn't move
All
Mains switched off
Switch on the mains switch
Broken wire
Disconnect unit from mains and repair or
replace the mains cable
Shaft break
Disconnect unit from mains and replace
flexible shaft, check the speed if
necessary
Machine switched on,
motor does not run
All
Connection
to
works
mains
defective
Check the connection and install a new
connection, if necessary
Circuit breaker of works mains
FAULT
Inspect the circuit breaker, switch on
again or replace
Switch defective or connection
loose
Check contacts and connection, replace
switch if necessary
All
Field package or anchor defective Inspect, replace if necessary
Carbon brushes worn out
Inspect, replace if necessary
Tool blockage
All
Shaft break
See above
Tool vibrates strongly
Tool releases from the
collet
All
Tool incorrectly clamped
Clamp tool correctly
Speed set too high
Reduce speed
Motor gets hot when
running
All
Ventilation slits in the motor
housing or intermediate flange
blocked/worn out
Clean ventilation slits
Brush sparking in motor
All
Carbon brushes worn out
Inspect, replace if necessary
Motor
stops
when
operating
MB 30 E
Excessive application pressure
leads to machine overload.
Switch-off after overload for
safety reasons
Switch the machine off and on again
within 2 seconds.
Fluctuation of the speed
Carbon brushes are not run in
complete
Run in the carbon brushes up to 60
minutes
