Schmidt AmphiBlast 120, Руководство по эксплуатации и обслуживанию

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11.3.3. Contaminated Abrasive
Air quality is crucial to the operation of an abrasive blaster. Moisture and
contaminants can cause components to malfunction. Moisture condensation in a
blast system causes abrasive flow problems. Condensation occurs when the hot
vapor-filled compressed air cools as it reaches the abrasive blaster. Water droplets
formed during condensation can be absorbed by the abrasive in the blast vessel
which can cause erratic flow to the abrasive valve. To minimize the chance of
abrasive flow problems a moisture removal device installed for the blast system air
supply is highly recommended (i.e. coalescing moisture separator, air-cooled
aftercooler or deliquescent dryer). Contact a local authorized Schmidt® distributor
or Axxiom Manufacturing, Inc. to locate one near you.
Do Not hammer on any part of the pressure vessel to improve abrasive flow. This
can cause cracks that may lead to pressure vessel rupture.
11.3.5. Recycled Abrasives
Used & recycled abrasives can contain trash & coating particles removed from
previously blasted items (particularly sticky coatings) that can cause abrasive to
clump together and block the metering valve orifice and stop flow. Prior to use
recycled abrasive must be passed through a screen with openings no larger than 1/4”
round. Some applications may require smaller openings. Refer to Section 11.3.4
Trash in recycled abrasive can also prevent the abrasive valve plunger from properly
seat. The result will be air leakage at the blast nozzle in the off mode. This leak will
gradually worsen due to the blasting effect of the leak. This leak will cause
premature wear of the seat, plunger, and sleeve.
Recycled abrasive can contain trash that can cause equipment malfunction. Prior to
use, recycled abrasive must be passed through a screen with openings no larger than
1/4” round. Some applications may require smaller openings.
Notes