Impacts STREAMER S320RD, Руководство по эксплуатации

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Operating Manual S320RD
39
7.5 Adjusting the Blast Pattern and Control Cage
In order to get a uniform and perfect blast pattern on the treated surfaces, the correct adjustment
of the blast pattern is most important.
Prior to any maintenance or repair work on the machine and its drives, secure the machine against
unintended switch-on. Put the machine to its Safety Off Position (see Chapter 2).
Incorrect adjustment of the blast pattern results in:
• Uneven cleaning (shadows on the right or left hand side)
• Extreme high wear (Wheel kit and the liners)
Four factors affect the blast pattern:
1. Rotation direction of the blast wheel
The rotation direction of the blast wheel must correspond to the instructions on the housing (arrow
indicating the turning direction).
2. Worn tune-up kit
With increased wear of the Wheel Kit (impeller, control cage), the blast pattern will change
3. Size of Abrasive
The size of the abrasive affects the blast pattern. Every change of abrasive requires the blast
pattern to be set or to be re-adjusted.
4. Position of the Control Cage
The correct adjustment of the control cage is most important to obtain an optimum blast pattern.
The control cage has a lateral window. The position of this window determines where the abrasive
is fed on the blast wheel blades and where it hits the surface to be treated.
After changing the Wheel Kit, the adjustment of the control cage must be checked and re-adjusted.
To do so, you need to create a blast pattern. The same applies for blasting on another type of
surface.
Adjustment of the Control Cage
The adjustment is affected by loosening the cage clamps (H)
and turning the control cage (Z) in the proper direction. The
cast grooves (V) on the control cage show the position of the
control cage opening. The feed spout remains in its former
position.
Follow these important tips: the control cage opening is
approximately opposite to the throwing angle. The abrasive
grain size plays an important role here. Different types of
abrasive have different throwing characteristics due to their
different weights and frictional resistance. This means that
you must never use different types.