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990242 Rev. A
#15 Main Abrasive Pinch Valve (top)
The top pinch valve opens and closes with depression of the footswitch. It controls the flow of
air/abrasive to the handpiece/nozzle. The Status Indicator LED monitors this pinch valve and will
flash red with a audible alarm when the pinch valve tubing is ruptured and needs replacing.
#16 Quick Dump Pinch Valve (middle)
This pinch valve relieves the pressure and abrasive in the hose and handpiece when the
Footswitch is released. When the footswitch is released the Quick Dump Pinch Valve opens
allowing the built up pressure and abrasive in the hose and handpiece to be expelled into the
Exhaust Bottle.
#17 Bleed Off Pinch Valve (bottom)
This pinch valve is used to depressurize the system when: a) the unit is turned off b) the Air
Switch is in the Off position or c) the Rear Door Interlock is open. In any of the 3 previous
situations the bottom pinch valve will open allowing any pressure in the unit to be released
through the Exhaust Bottle.
#18 Exhaust Bottle
The Exhaust Bottle is used as a relief port for air pressure and abrasive when the footswitch is
released or the unit is turned off or depressurized.. The air and/or abrasive is received via the
middle and/or bottom pinch valve. Any abrasive is filtered and the air is release via a port on the
side of the Exhaust Bottle. Since the Exhaust filters and collects abrasive, it must be periodically
be emptied.
#19 Coalescing Filter
The Coalescing Filter is in the incoming air supply line. It will remove
small
amounts of oil or
moisture that might be in the air supply. It automatically dumps any oil or moisture collected each
time the unit is turned off. If oil or moisture is noticed below the coalescing filter, the air supply
should be checked for the source.
Summary of Contents for Kreativ Mach 4.0
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Page 18: ...Page 16 990242 Rev A...
