Operating Instructions 500 E Global
Maintenance
12
7.8 Blastwheel blades & Impeller replacement
During operation the blast wheel blades and the impeller will wear.
To replace worn components:
Make sure the power unit is stopped and the main
electricity supply disconnected.
Remove the bolts securing the abrasive storage hopper to
the separator and remove the hopper from the machine.
Remove the cage clamps securing the control cage and
remove the control cage.
Unscrew the impeller bolt and remove the impeller using a
wooden or brass drift.
Remove the top liner cover and remove the top liner using
a screwdriver or a crowbar.
Clean the blast wheel and the blades with air.
Through the opening at the top of the blast housing: use a
wooden or brass drift to tap out all six blades from the
blast wheel towards the centre of the blast wheel.
Clean the blast wheel thoroughly to make sure that the
new blades and impeller will fit well and to avoid any
imbalance of the blast wheel.
Replace the blades with six new ones and re-assemble
the machine in reverse order. Note: blast wheel blades
must be replaced as a set. Replacing only some of the
blades can cause imbalance of the blast wheel.
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