Place the spraymist unit within reach of the toolholder by the 8' dual hose assembly supplied. Connect the slide valve to the 1/4" NPT air inlet.
Press in the larger "Air" hose into the lower connector on the manifold, and the smaller "Fluid" hose into the upper.
Fill reservoir with the appropriate cutting fluid (see notes) mixing in a separate container at a 10:1 ratio.
Connect the high flow mist jet to the toolholder or delivery device for the drill.
Shop air supply 100 psi minimum.
Fill reservoir with Sterling Gun Drills lubricant (DF-81, DF-86) or equivalent high "EP" oil base water soluble coolant.
DO NOT USE SYNTHETICS!
NEVER rotate the drill outside of the drilled hole or pilot hole.
Do not allow a filled unit or the lubricant to freeze.
If a drill breaks, turn off the slide valve and remove the mist jet prior to removing the drill.
For extended periods of non use, drain and rinse the reservoir and cycle the pump to clear residual coolant.
Air Vol.: 4-8 CFM, dependent on drill size.
Prepare a pilot hole to the drill diameter +.001", -0 by 1/2 to 1 diameter deep. The shape of the hole bottom is of not important. If a bushing is used, keep it to +.001" and against the part if possible.
With the drill secured in the toolholder, open the slide valve to actuate the unit. Press the "reset" button on the enclosure top to provide the initial charge of lubricant. Check that the pressure on the output gage is approx. 50% higher than your known shop air supply. The "reset" should be required once at the start only, then the pump will cycle as required depending on coolant usage, typically once every 30 to 60 seconds.
Adjust the high flow mist jet volume with the knurled knob to develop a very fine mist. Typical lubricant usage should be about one gallon per four hours of drilling with a 1/2" drill. Note: Too much mist interferes with cooling and chip removal.
Enter the drill into the pilot hole or bushing. Start the spraymist, spindle, then the feed (set to the rates given on our universal speed & feed chart) Drilling is continuous to depth, no peck cycle required.
At depth, stop the feed and retract slightly if a blind hole, then stop the spindle, the mist and then back out.
Optional Automatic Operation: CNC - Replace the slide valve with the DM-66 solenoid valve and program the machine control to turn the spraymist unit on and off.