14
BLAST WHEEL DRIVE (FIGURE 7)
The blast wheel (1) throws shot at the surface to be treated. It is surrounded by replaceable liners (2) and is driven by an electric motor (3) via the
wheel hub (4). Shot is fed to the blast wheel through the feed spout. The position of the control cage (5) determines the direction shot is thrown to
the surface and the evenness of the blast pattern.
BLAST HEAD SEALS (FIGURE 8)
The blast head opening has magnets (1) on the front and sides with brushes (2) on the outside. The rear has a brush only (3). Together the
magnets and brushes regulate the airflow inside the machine and seal against shot spraying out from the blast head. Airflow enters the machine
through the rear brush and travels through the plenum transporting shot and dust upwards to the separator.
The correct height adjustment is .25-.32” (6-8 mm) from the bottom of the magnets to the surface and is important for optimum machine perfor
-
mance. In general, the magnets should be set at the maximum height of .32” (8 mm) for very rough surfaces and set at the minimum height of .25”
(6 mm) for very smooth surfaces. See
Adjusting the Height of Magnets and Brushes
for the adjustment procedure.
FIG. 7
FIG. 8
Components and Assembly
14
2
2
3
1
2
1
1
1
5
2
3
4
402306_A95_RevH
Содержание A95
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