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PULSAR
®
IX SUCTION BLAST CABINET
Page 14
© 2019 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 23425, Rev. C, 07/19
4.7.3
Keep doors closed and exhauster running until
the cabinet is clear of all airborne dust.
4.7.4
Unload parts.
4.8
Shut Down
4.8.1
Shut off the air-supply valve, bleed the air-
supply line, and drain the compressed-air filter and pulse
reservoirs.
4.8.2
Switch OFF the lights and exhauster.
5.0
ADJUSTMENTS
5.1
Blasting Pressure (Pilot Regulator)
5.1.1
The pilot regulator, located left of the view
window, enables the user to adjust blasting pressure
while blasting, to suit the application. The suitable
pressure for most purposes is about 80 psi. Lower
pressures may be required on delicate substrates and will
reduce media breakdown. Higher pressure may be
required for difficult blasting jobs on durable substrates,
but will increase media breakdown. If pressure is too high,
suction in media hose will decrease, and if high enough,
cause blowback in the hose. Optimal production can only
be achieved when pressure is carefully monitored.
5.1.2
To adjust pressure, unlock the knob by pulling it
out, as shown in Figure 17, and turn it clockwise to
increase pressure or counterclockwise to decrease
pressure. Pressure may drop slightly from closed-line
pressure when blasting starts. Once operating pressure
is set, push the knob in to lock it to maintain the setting.
Figure 17
5.2
Air Jet Adjustment ‒ Figure 18
5.2.1
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
maintain the setting. Refer to Section 9.2, Item 16, for
optional air jet adjusting tool, which correctly positions
the jet.
Figure 18
5.3
Media/Air Mixture (media flow) ‒ Figure 19
5.3.1
Check the media stream for correct media/air
mixture; media flow should be smooth and appear as a
light mist coming from the nozzle.
Figure 19
5.3.2
If media does not flow smoothly, loosen the lock
nut, and adjust the metering screw until the upper holes
in the metering stem are closed-off, and the lower holes
are fully open, as shown in Figure 19. This adjustment is
a starting point.
5.3.3
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 lock nut
and
slowly
turn
the
adjusting
screw
out
(counterclockwise when viewed from the top) until the
media flows smoothly. Tighten the lock nut finger-tight to
maintain the setting.
5.3.4
If media flow is too light, decrease air in the
mixture by turning the metering screw in (clockwise
when viewed from the top) covering more of the holes
Adjusting Screw
Lock Nut
Lower holes fully open
Upper holes
fully closed
When viewed from the knob end,
turn clockwise to increase pressure
turn counterclockwise to decrease pressure
Lock Nut
Air Jet
3-1/2 to 4 threads between
lock nut and air
jet hex
Regulator is located on left
side of view window.
Regulator shown without
gauge for clarity.
Pull knob out to unlock
Decrease pressure
Increase pressure
Push knob in to lock