DirectFlo DF1400
Chapter 3: Using the DirectFlo
Comco Inc.
3-15
Issue Date: January 2009
Power Up
1.
Switch "Power" to the "ON" position. The Power indicator should light.
2.
Check to see that no air is escaping from the tank cover. If a leak is discovered,
follow the “Stopping-Refilling the Tank” procedure presented later in this chapter.
3.
Adjust the “Abrasive Blend” knob to “MAX” (fully clockwise).
4.
Adjust the "Air Pressure" knob as necessary until the needle on the pressure
gage is centered at about 80 psi. To adjust the pressure, pull the knob out.
Rotate it clockwise to increase the pressure, or counterclockwise to decrease the
pressure. Push the knob in to lock it in position.
Blasting
1.
Place the work piece in the WorkStation. The window will provide a suitable
transparent barrier between the operator’s face and the work piece to prevent
flying abrasive particles from entering the eyes, nose, or mouth.
2.
Turn on the dust collector that is connected to the WorkStation.
3.
Install the appropriate nozzle in the handpiece, being sure that the O-ring is in
place, and firmly seat the nozzle finger tight. The machine is initially equipped
with a 0.060" diameter nozzle (red), which is suitable for most abrasives and
cutting purposes.
4.
Make sure the handpiece is inserted into the WorkStation through one of the side
openings. Grasp it firmly as if it were a pencil, aiming the tip of the nozzle at the
work piece. The tip should be about 1/4" to 1/2" away from the surface to be
blasted (optimum distance for cutting is 5-8 times the nozzle outlet diameter).
CAUTION:
The air that comes out of the nozzle contains abrasive.
Do not point the nozzle at anything that could be harmed
or damaged as a result of abrasive flow, especially the
WorkStation glass window.
5.
Step on the footswitch to start blasting. The PowderGate will open and the
modulator will start to hum. Abrasive will continue to flow as long as the
footswitch is pressed. Move the handpiece or the work piece as required by the
job.
6.
If more or less abrasion is desired, turn the "Air Pressure" knob to raise or lower
the blasting pressure.
