Challenge CH-EH3, Руководство оператора

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6.0 Operation
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6.0 Operation
6.1 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 simultaneously by a single set of start-stop
buttons located on the stand under the table (Figure 1 on page 8). Be sure both motors are operating
before trying to drill paper.
6.2 Operating the Drill
Always wear safety glasses when operating this machine.
Pressing down on the foot switch activates the hydraulic unit, which brings the drill heads (and drills)
down to the table. 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 drilling to provide the proper
drill depth. See section 6.3 on page 13 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 PEDAL WITHOUT INTENDING TO BRING DOWN THE DRILLS!
6.3 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 because 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 (Figure 1 on page 8) 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
under the heads. The center spindle should then be adjusted so that the center drill just cuts through
the paper. 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 counterclockwise to lower and clockwise to raise. No locking is necessary. Once all three drills
are set, drill through a full lift of paper. A final adjustment of the drill depth adjusting screw may be
necessary to obtain the best results.
6.4 Setting the Distance between Drill Heads
This machine incorporates three drilling heads operating 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