Safety, Operation & Service
Page 7
EN-823122
February 17, 2004
Quackenbush
Operating and Safety Instructions
AIR SUPPLY:
AIR PRESSURE, HOSES, AND COUPLINGS:
This tool is designed to operate on 90-110 psig (6.2-7.6
bars) supply pressure using a 1/2" hose up to 20 ft. in
length. If additional hose is needed, a 5/8" or larger
diameter hose should be connected to the 1/2" in. hose.
Quick disconnect couplings (if used) should have flow
capacity ratings exceeding 60 SCFM.
LOW PRESSURE:
This drill will shut-off automatically (while drilling or
when retract begins) if the pressure at the tool inlet
drops below 65 psig (4.5 bars). Manual restart is
required. The drill will not continue to run when the
green drill button is released if the pressure at the tool
inlet is low.
HIGH PRESSURE:
This drill shuts off automatically at the end of the retract
cycle. If the pressure at the tool inlet is over 115 psig
(7.9 bars) the tool may continue to retract, jamming the
retract stop collar into the housing cover causing the
tool to either stall or shear the shear pin.
OPERATING INSTRUCTIONS
If the tool has been shipped recently, been in storage,
or repaired, or disassembled; it should be run (without
spindle) through a "Tool Function Check" of functions.
EMERGENCY STOP
—Depressing the red emergency
stop button
1
will stop the tool, except when the rapid
advance mode is being utilized. Releasing the rapid
advance lever
2
will stop the tool.
RAPID ADVANCE
—Depressing the rapid advance
lever
2
will advance the cutting tool to the work
surface faster than the regular feed rate and stops
advancing forward automatically until the green drill
button
4
is depressed. Note: When the rapid
advance lever is depressed, the exhaust deflector
3
will
move forward (toward the head) approximately 3/8" and
return to its original position when the lever is released.
DRILLING
—Press the green drill button
4
firmly and
release it to start the drilling cycle. The cutter will feed
to a predetermined depth, dwell, and then retract.
The drill motor will shut off automatically at the end of
the retract stroke. The cutter may be manually retracted
at any time by raising the retract lever
5
.
IMPORTANT: The spindle retracts at a much faster
rate than it feeds. Care should be taken to avoid
entrapment.
Do not hold the drill button down during the end of the
retract stroke—this prevents "motor stop".
DEPTH ADJUSTMENT:
DEPTH COLLAR
—Has four (4) holes for adjusting
depth in increments of .005". Removing the set
screw and rotating the collar about 1/16 revolution
or 22.5° will either increase (clockwise) or decrease
(counterclockwise) the depth by .005". This will align
one of the four holes with one of the four slots. Lock set
screw into a spindle slot. Using the same hole and
rotating the collar 90° will give an adjustment of .020"
and 360° will give an adjustment of .080". Tighten lock
screw after each depth adjustment. IMPORTANT
NOTE: To insure maximum repeatability, the work
surface, fixtures, and depth stop must be cleared of any
chips or foreign material before beginning the next hole.
Always replace the rear spindle guard after making a
depth adjustment.
TOOL FUNCTION CHECK
1. With air supply shut off, remove rear
spindle guard.
2. Remove depth stop
6
(left hand threads).
WARNING:
Keep hands and clothing clear of
rotating spindle, turn air supply on and use rapid
advance to remove spindle.
3. Shut off air supply pressure.
4. Depress 5/16" diameter steel end of throttle
piston
9
. The throttle piston must spring return
quickly when released.
5. With air supply on, move rapid advance lever
2
all
the way. Motor runs and spindle feed gear (thread
ed I.D.) must not rotate. Spindle drive gear (splined
l.D.) rotates. Shear pin is whole and intact.
