Omax ProtoMAX Operation Manual page 12

NOTICE
The garnet abrasive material in the hopper must be kept clean and dry. If moisture
enters the hopper, the garnet abrasive material will clump and clog the feed tube,
which will require cleaning. Even very small particles of dirt will clog the mixing
tube. Always store the garnet abrasive material in a covered, dry location protected
from metal chips and other debris.
[1] Hopper lid
[2] Garnet abrasive screen [4] Abrasive feed block
Tube routing is for illustration purposes only.
*
NOTE:
Always use garnet abrasive purchased from OMAX. This high-quality abrasive is more
consistent in particle size and contains less dust. Inconsistency in particle size makes it
difficult to maintain quality when cutting and increases the likelihood of the mixing tube
becoming clogged. When dust is present, static electrical charges can build up, causing the
garnet abrasive particles to clump together, hindering the garnet abrasive flow.
Abrasive Waterjet Nozzle
The abrasive waterjet nozzle contains a 0.030 in. (0.762 mm) replaceable mixing tube,
0.008 in. (0.2032 mm) replaceable (drop-in) orifice assembly, and nozzle body. High-
pressure water is forced through the orifice and enters into a larger mixing chamber,
drawing the garnet abrasive from the abrasive feed tube. The water and garnet
Figure 218
[3] Abrasive feed tube* [5] Hopper splash guard [7] Garnet abrasive hopper assembly
[6] Hopper support plate [8] Bulk abrasive port