INEX SUCTION BLAST CABINET With VACUUM COLLECTOR Page 4
© 2005 CLEMCO INDUSTRIES CORP. • www.clemcoindustries.com • Manual No11217 Rev. E 03/05
3.2.3 When blasting very small parts, place an
appropriately sized screen over the grate to prevent
parts from falling into the hopper.
3.2.4 Close door. Be certain doors are sealed
securely.
3.3 Blasting Operation
CAUTION
• Always close cabinet doors before blasting.
Keep doors closed during blasting.
• Always wear blast gloves.
• Avoid pointing the blast nozzle toward the
view window.
• After blasting, keep doors closed and
exhauster on until the cabinet is clear of all
airborne dust.
• Stop blasting immediately if dust leaks are
detected.
3.3.1 Slowly open the air valve on the air supply hose
to the cabinet. Check for air leaks.
3.3.2 Adjust the pilot pressure regulator located under
the cabinet skirt, to the required blast pressure per
Section 4.1.
3.3.3 Turn on the lights and collector. The on/off
switch performs both functions.
3.3.4 Load parts.
3.3.5 Close door. Be certain doors are sealed
securely.
3.3.6 Insert hands into gloves.
3.3.7 To blast; hold the gun firmly and apply pressure
to the foot pedal; blasting will begin immediately.
3.3.8 When blasting very small parts, place an
appropriately sized screen over the grate to prevent
parts from falling into the hopper. Should an object fall
through the grate, stop blasting immediately and retrieve
it. Whenever possible avoid holding small parts that will
require blasting into the glove.
3.4 Stop Blasting
3.4.1 To stop blasting, remove pressure on the foot
pedal.
3.4.2 Allow the exhauster to clear the cabinet of
airborne dust before opening the door.
3.4.3 Unload parts, shut off the air supply valve, drain
the air filter, and switch off the lights and exhauster.
3.5 Blasting Technique
3.5.1 Blasting technique is similar to spray painting
technique. Smooth continuous strokes are most
effective. The distance from the part affects size of blast
pattern. Under normal conditions, hold the nozzle
approximately 3" to 6" from the surface of the part.
4.0 ADJUSTMENTS
4.1 Blasting Pressure
4.1.1 The pilot regulator, located under the cabinet
skirt, enables the user to adjust blasting pressure to suit
the application. The suitable pressure for most purposes
is 80 psi. Lower pressures may be used for delicate
work. In all cases, highest production can be achieved
only when pressure is carefully monitored.
4.1.2 To adjust, unlock the knob, and turn it clockwise
to increase pressure or counter-clockwise to decrease
pressure. Pressure will usually drop from closed-line
pressure when blasting is started. Once operating
pressure is set, lock the knob to maintain the setting.
4.2 Air Jet Adjustment
4.2.1 The air jet should be screwed 4-1/2 to 5 full
turns into the gun body. Doing so will leave 3-1/2 to 4
threads exposed past the lock nut. Tighten the lock nut
to hold the jet in place. See Section 8.2 for optional
adjusting tool.
4.3 Media/Air Mixture, Figure 4
4.3.1 Check the media stream for correct media/air
mixture; media flow is smooth and appears as a light mist
coming from the nozzle.
4.3.2 If media does not flow smoothly, loosen the
locking nut, and adjust the metering screw until the upper
holes in the metering stem are closed-off, and the lower
holes are fully open. See Figure 4. This adjustment is a
starting point.
4.3.3 If pulsation occurs in the media hose, either media
is damp and caked, or not enough air is entering the media
stream. While blasting, loosen the locking nut and slowly
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