CONTRACOR
®
Version 4.2
16
During the blast cabinet operation, dust collector is pulsed automatically according to
the timer settings. Prolonged periods of blasting or duty conditions may require adjustment
of the timer settings.
4.2.5. Stop blasting operation and shut-down.
To stop blasting, remove pressure on the foot pedal.
Use the air blow-off nozzle, to blow media off cleaned parts. Allow the exhauster to
clean the cabinet of airborne dust before opening the door and unload the parts. Push
button OFF to switch off the exhauster.
Turn on/of switch to the position “0” to switch off the lights and filter pulse cleaning.
Shut off the air supply to the blast cabinet and drain air filter.
4.3. Adjusting
4.3.1 Blasting pressure
The pilot pressure regulator, located on the control panel of the cabinet, enables the
user to adjust the blasting pressure to suit the application.
The suitable pressure for most purposes is around 5-6 bar. 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 break down.
In all cases, highest production can only be achieved when pressure is carefully monitored.
Adjust air pressure by turning the knob on the pilot regulator located on the front of
the control panel. Pull the knob out, and turn clockwise to increase pressure or counter-
clockwise to decrease. Once operating pressure is set, push the knob in to lock.
4.3.2 Air jet adjustment
The air jet should be screwed 4.5 to 5 full turns into the rear of the GX gun body.
Doing so will leave 3.5 to 4 threads exposed past the lock nut. Tighten the lock nut to hold
the orifice in place.
4.3.3 Media/Air Mixture
Observe media flow through the clear media hose. Media should flow smoothly and
evenly through the hose.
