AXXIOM Manufacturing, Inc. SCHMIDT, Operation And Maintenance Manual

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© 2013 Axxiom Manufacturing, Inc.
7.2.11. Observe the blast stream and the coating removal rate. A bluish color in the blast stream
indicates a good abrasive to air mixture. Release the deadman lever to stop blasting.
7.2.12. If necessary adjust the abrasive flow with the knob on the Thompson Valve® (#14).
Turn clockwise for less abrasive flow, or turn counter-clockwise for more abrasive. Due
to the length of the blast hose there will be a slight delay in control of the abrasive flow
at the nozzle, therefore allow a few seconds before adjusting further.
7.2.13. Note the markings on the side of the Thompson Valve II spring retainer to view the
knob position relative to the abrasive flow. The markings relative to the knob can be
used as reference when changing nozzle size or abrasive for different applications.
7.2.14. Re-test the blast air and abrasive mixture again on a test piece to determine is further
adjustment is needed. Release the deadman lever to stop blasting. Replace screen (#29)
to prevent debris from entering blaster vessel.
Figure 7.2 – Mini Abrasive Blaster with pneumatic deadman controls