MyBinding CHALLENGE EH-3C, Instruction Manual

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F.352-J/EH-3C DRILL/JUN 98
10
for specific problems). It may be necessary to provide
a separate branch power line for the machine.
Since the standard machine is intended for a single
phase hookup, simply fasten either wire of the power
cord to either terminal of the starter and the ground wire
to the designated terminal (fig. 4).
INSTALLING THE CHIP BAG
The chip container bag is installed by slipping it over
the two hooks provided on the rear of the machine.
OPERATING
INSTRUCTIONS
STARTING THE MACHINE
The power for this machine is supplied by two motors;
one is for the hydraulic power pack, the other is for the
spindle. They are both started and stopped simulta-
neously by a single set of start-stop buttons located on
the stand under the table (fig. 1). Be sure both motors
are operating before trying to drill paper.
OPERATING THE DRILL
Pressing down on the foot switch activates the hydrau-
lic unit which brings the drill heads down through the
stock. When the drills reach the bottom of their stroke,
they will automatically return the “up” position. (Note:
The vertical stroke of the drills must be set before drill-
ing to provide the proper drill depth. See the following
section for adjustment procedures). The pedal must be
released and depressed again before drilling the next
set of holes, assuring full control and allowing no repeat
stroke. By releasing the pedal, the operator can stop
the drills in their downward stroke at any time allowing
them to return to their normal position, thus preventing
costly errors. NEVER REST YOUR FOOT ON THE
TREADLE WITHOUT INTENDING TO BRING DOWN
THE DRILLS!
ADJUSTING THE VERTICAL STROKE
The vertical stroke of the machine determines the exact
depth the drills will reach at the bottom of their stroke.
Whenever installing a new set of drills, the vertical stroke
must be adjusted before drilling.
The two outside heads are provided with independent
height adjustment while the center head works from the
center overall adjusting screw. This is necessary be-
cause of the variance in length of the drills. Start by
adjusting the center head to its highest point. This is
accomplished by turning the drill depth adjustment screw
(fig. 2) counterclockwise until it stops turning. Then
adjust the side heads all the way up by turning the
knurled ring on the heads clockwise (use the provided
drill drift in the holes if necessary). Now, with the new
drills in the place, put two or three sheets of paper un-
der the heads. The center spindle should then be ad-
justed so that the center drill just cuts through the pa-
per. Too deep will cause a ragged hole in the bottom
sheets as well as a shorter drill life from drilling into the
cutting block. After the center drill is adjusted, each
outside spindle can be adjusted. Turn counterclock-
wise to lower and clockwise to raise. No locking is
necessary. Once all three drills are set, drill through a
full lift of stock. A final adjustment of the drill depth
adjusting screw may be necessary to obtain the best
results.
ADJUSTING THE CENTER TO CENTER DISTANCE
BETWEEN DRILL HEADS
This machine incorporates three drilling heads operat-
ing on three belt-driven spindles. The center head is
stationary while the two outside heads have a lateral
adjustment of 1
3
/
4
” each.
This provides an adjustment range of 2
3
/
4
” to 4
1
/
2
” (7
cm to 11 cm) between the center drill and either of the
outside drills, or a range of 5
1
/
2
” to 9” (14 cm to 23 cm)
between the two outside drills.
The lateral adjustment is accomplished by loosening
the clamp knob (a black, plastic hand knob) located at
the rear of each outside head, and then turning the 4-
lobed, black knob located at the outside of each head.
This moves the heads along a shaft. A scale and pointer
located at the front of the heads gives a reading in
inches and millimeters of the center line relationship to
the center head. When a setting is made, make cer-
tain that the clamp knob is tightened again.
(fig. 4)