Operating Instructions 500 E Global
Maintenance
6
Every time the control cage is replaced, the thread of the blast wheel
fastening screw should be checked. Make sure that this screw will be
tightened correctly. In addition, absolute care must be taken to clean
the thread from dust and abrasive.
After each blast wheel repair work switch on the blast wheel motor for a
short period (without feeding abrasive) in order to find out whether the
rotating parts turn freely and without vibration. After that, the blast
cleaning procedure can be continued.
The blast wheel motor is designed for a long service life. Damages to
the blast wheel motor can be detected by unusual noises or functional
failure of the electric motor. In this case notify our service department.
7.5 Setting the blast pattern
In order to obtain a uniform and perfect blast pattern on the surfaces to
be treated, the correct adjustment of the blast pattern is of utmost
importance.
An incorrect adjustment of the blast pattern results in:
Uneven cleaning (shadows on the right or left hand side).
Extremely high wear of the blast wheel, blades, impellor, control
cage and liners.
Prior to any repair works on the machine and its drives,
secure the machine against unintentional switching-on. Put
the machine to its safety off position.
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