Blastrac EBE 350 VH, Operating Instructions Manual, Page: 84 / 99

Operating Instructions EBE 350 VH
Fault diagnosis
9.1 Fault diagnosis - blast machine
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 worn blast
wheel parts 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.
Contaminated abrasive.
Feeding of abrasive shot
valve and abrasive
storage hopper.
Clean wire mesh, top up
abrasive if necessary.
Abrasive is heavily
contaminated, check the
ventilation system.
Check and clean blocked
shot valve housing.
2