Blastrac 1-8DEZ, Руководство по эксплуатации

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Shot Blasting
MODEL 1-8DEZ BLASTER
SECTION 6
SETTING THE CORRECT BLAST PATTERN
34
OPERATING MANUAL
JUNE 2007
Control Cage “Trial & Error” Setting
The initial setting of the control cage for a machine
that has the blast wheel rotating in a counter-
clockwise direction is between 8:30 and 10:30. The
leading edge should be at 10:30. Refer to Figures
6.1.1, 6.1.2 and 6.1.3. Place a 3/16” or 1/4” steel
plate beneath the machine and blast with the
abrasive control valve at full open for about 45
seconds. Do not move the machine during this test.
The resulting “hot spot” should be centered as it
appears on Figure 6.1.2. If the “hot spot” is too far to
the left, rotate the control cage in a counter-
clockwise direction about 1/4” and recheck the blast
pattern on the test strip. Small changes in the
rotation of the control cage can move the “hot spot
“significantly. If the “hot spot” is too far to the right,
rotate the control cage in a clockwise direction.
Once again, move the control cage in small increments
until the blast pattern (“hot spot”) is centered.
Figure 6.1.2
Note: If the blast pattern cannot be centered, check the
blast wheel and be sure it is properly mounted and
seated on the wheel hub located behind the blast
wheel. The two pins on the hub must be seated on the
back of the blast wheel before the wheel can be
secured. This check must be made whenever the blast
wheel is changed.
Figure 6.1.3