Operating Instructions 1-7D
Fault diagnosis
9.1 Fault diagnosis
Prior to any repair works on the machine or its drives the
machine must be secured against unintentional switching-on.
Put the machine to its Safety off position.
Fault Possible cause Remedy
Excessive
vibration
Blast wheel is worn
irregularly. Imbalance
due to worn or broken
wheel blades.
Replace the tune-up kit
and remove all broken
parts from the machine.
Unusual noise Too little play or poor
alignment of the rotating
parts.
Loose and incorrect set
screws.
Squeaking wheels.
Seizing motor.
Check alignment of the
rotating parts (blast
wheel and control cage).
Check whether all
screws and parts are
fixed tightly).
Replace the wheels.
Replace the motor.
Reduced or
no blasting
performance
Inadequate abrasive
supply to the blast wheel.
Feeding of abrasive -
magnetic valve and
abrasive storage hopper.
Blast wheel or control
cage.
Adjustment of the
magnetic valve.
Clean wire mesh, top up
abrasive if necessary.
Check and clean blocked
feed spout or magnetic
valve.
Worn blast wheel or
control cage, replace
tune-up kit if necessary.
Check the adjustment of
the magnetic valve.
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