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Note: If gun or metering valve begins to clog
or becomes completely clogged during use,
cover hole in blast tip tightly, then pull gun
trigger or push foot valve. Air pressure will
be then diverted back through media suction
piping and usually blow out clog.
If clogging still persists, it is likely that moisture
or contamination ratio in media is too high, or
there could be a loose fitting or leak in hose.
Dry out media, install moisture trap, screen or
replace media, or check for leaking hose.
Only use high quality DRY media. DO NOT
use regular sand, and recognize when media
has broken down and is too fine or loaded up
with contaminants to work properly. Worn-out
media and contaminants will cause caking
and clogging.
If clogging persists, refer to Troubleshooting
on Page
for further solutions.
31
13. Every
20–30 minutes
push canister plunger in until it stops, then
let your thumb slide off of button so spring
slaps plunger back against canister wall.
This causes vibration that knocks off material
which is caked onto outside of filter (Figure
25). Every five hours of cabinet use, service
dust collector filter. Refer to Maintenance on
for procedures.
Page
30
Canister
Plunger
Figure 25. Canister plunger.
14. When media blasting is complete, disconnect
cabinet from power and air supply.
Model G0707 (Mfd. Since 12/23)
during cabinet use,
Blasting Media
Media Cost vs. Productivity
It is often assumed that by using low-cost media,
such as basic builder's sand or play sand, the
worker can enjoy increased productivity costs
because sand is so cheap. However, since sand
is a "Dull Media," the blasting tip size must be
increased and higher air pressure and more CFM
are required to increase the blast velocity to over-
come the dull media problem. This compensation
usually results in longer compressor duty cycles
that can overheat some units.
Compressor maintenance cycles, power con-
sumption, and water separator service intervals
may increase. Additionally, general sand can
cause increased down-time from clogging tips,
hoses, and valves, and generally create a hazard-
ous, silica-laden environment.
With the correct research, excellent productivity
can be achieved using sharp media with a smaller
tip and less air pressure than with dull media at a
higher pressure.
Maximizing Media Life
Screen the used media with a series of wire mesh
screens to refine it to one consistent size. When
using the blasting cabinet, experiment with using
the least amount of media as possible. The result
of using less media is that you will have less mate-
rial to screen or discard and more fresh media for
mixed projects. Store media in a dry place.
Grizzly Blasting Media
G6535: 15 lbs. Aluminum Oxide 220 Grit.
G6536: 15 lbs. Aluminum Oxide 120 Grit.
G6537: 15 lbs. Aluminum Oxide 60 Grit.
G6538: 15 lbs. Glass Bead 50-Micron Grit.
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