Air System Setup - Grizzly G0714 Owner's Manual

Air System Setup

Air Supply
The ability of this blast cabinet to accomplish its
task is directly related to how well the air supply
system is designed. For this blast cabinet to oper-
ate at its maximum potential for large blasting
jobs, with the largest blast tip and widest spray
pattern, the volume of compressed air feeding
the regulator should be 35 CFM at 125 PSI. This
requirement demands an industrial grade two-
stage compressor that is designed for near con-
tinuous duty.
Refer to your compressor Owner's Manual and
make sure that the compressor can handle the
load of this industrial blast cabinet. Smaller com-
pressors can be used, but the duration of the work
shift and tip size installed must be reduced so a
safe compressor duty cycle is maintained. Not
allowing the compressor to cool will lead to com-
pressor or motor failure. The smaller the compres-
sor, the longer cool-down time that will be required
between the work cycles. However, with that said,
if a smaller diameter blast tip is used with a sharp
type of media, less air pressure and a lower CFM
can be sufficient for smaller projects.
If using smaller compressors, make sure to ser-
vice the compressor more frequently, and verify
that your compressor has the best cooling airflow
possible.
When filling or servicing the blast cabinet, there
is a risk of subjecting the compressor to airborne
media or dust. Be sure to locate the blast cabinet
away from the compressor operating environ-
ment. If even small amounts of media dust enter
the compressor through the intake or during gen-
eral service, the piston rings, valves, and bearings
can be quickly destroyed.
If an air compressor is not available or the blast
cabinet is to be used at a remote location, NEVER
connect this blast cabinet to pressurized bottled
gasses such as oxygen bottles used in welding
operations. Line ruptures or explosions can occur,
causing equipment damage, serious injury, or
death.
Model G0714 (Mfd. Since 05/22)
Air Plumbing
Usually, when installing a new supply line for a
blast cabinet where the complete system does
not exceed 125 feet, the inside diameter of the air
line should be ⁄ ". For runs up to 300', a supply
3
4
line with a 1" inside diameter is recommended. Be
sure to make the supply line long enough to allow
the compressed air to cool as much as possible,
so the moisture vapors can condensate on the
inner walls of the air line instead of accumulating
in the blast cabinet or the media.
Install the air supply lines with a slight tilt back
towards the compressor tank, so the moisture that
accumulates from condensation will drain back
into the compressor tank instead of puddling in
the low areas of the air lines. Install one or more
in-line water separators or an air dryer as close
to the blast cabinet as possible where the air has
had the most time to cool. Water separators typi-
cally work best on cool air rather than on hot air
that comes right out of the compressor tank.
For an overview of the typical air system for this
blast cabinet and its supply system, refer to the
Pneumatic Diagram on Page 16.
If using an existing air system, eliminate air supply
restrictions and pressure drops that may occur at
small quick-disconnect fittings, elbows, small sup-
ply piping, undersized water separators, kinked
lines, or rust-filled piping.
Remove any in-line oilers that are installed direct-
ly in the blast cabinet air supply line, or the media
and blast cabinet will become contaminated with
oil and blasting operations will quickly come to a
halt. Air supply lines for other machines that have
in-line oilers need not be removed, providing that
these lines only feed from the blast cabinet sup-
ply line.
Make sure to install an air supply quick-discon-
nect fitting or a shut-off valve that can be locked
out to prevent the air pressure from accidentally
being turned on. These items allow for the blast
cabinet to be serviced safely or allow it to sit idle
when not in use.
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