MicroBlaster MB1006
Section 1: The MicroBlaster MB1006
Comco Inc.
1-3
Issue Date: September 2003
How the MicroBlaster Works
As shown in Figure 1-2, below, when the MicroBlaster Power Switch on the front panel is
initially turned “ON”, supply air enters through the energized air valve at the back of the
unit. The supply air passes through a regulator that allows the operator to control the
system pressure, as indicated by the gage on the front of the machine.
The regulated air then passes through an open, or de-energized, modulator assembly
and into the mixing chamber and abrasive tank (only one tank shown). Air cannot
escape through the nozzle because the hose pinch (or shut-off) assembly is closed. The
air pressure inside the system builds up until it reaches the regulated pressure.
Figure 1-2: MicroBlaster, Pressurized
The MicroBlaster, as shown in the illustration above, is now pressurized and ready to
use. To operate the MicroBlaster from this point would simply require picking up the
nozzle for the selected tank, pointing it at the item to be blasted, and depressing the
footswitch to begin blasting. What happens when the machine is actually in operation is
explained on the following pages.
