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Evolution Bear 300 Manual De Instrucciones página 5

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CAUTION: To avoid damage to the machine, ALWAYS allow the machine to
come to a full stop before reversing rotation.
General Operating Advice
Position the machine using the pilot pin as an aid to locating the center of the cut.
Switch on the magnet and check that the cutter is still in the correct position and
the machine is securely held to the work piece. With the motor head in the raised
position, switch on the motor and allow to come up to full speed. Turn the crank
handle to begin cutting. Use light pressure at first to keep bit from wandering,
and then continue with normal pressure. Do not force the tool – let the speed of
the cutter do the work. Cutting performance will not improve by applying more
pressure on the tool and cutter and motor life will be reduced. Regulate the flow
of cutting coolant as required with the coolant feed tap. Use less pressure as the
cutter exits through the material. Always provide a method of catching the slug,
where the ejected slug may cause injury. CAUTION: the slug ejects at end of cut
and is very hot.
WARNING: NEVER operate 2-3/8" (60mm) or larger cutters unless the plate
thickness is optimum 13/16" (20mm) MAGNET LIFTING MAY RESULT.
CAUTION: machine is equipped with a reversing switch. Always ensure
that direction of rotation is correct before operating. Operating in the
wrong direction could result in damage to the cutter.
Gear Selection
Before drilling, select desired gear range by first pushing in on spring-loaded
gear selector slider switch and then sliding selector up for high speed or down for
low speed. (It may be necessary to turn the arbor slightly in order for the gears
to mesh properly). Follow the recommended speed ranges on the cutting speed
chart to set the proper speed and gear range.
GEAR
NO LOAD RPM
1
210
2
270
3
410
4
530
NOTE: These speeds are general recommendations only. Actual speeds
should be determined by the material and the cutting speed recommended
by the cutting tool manufacturer.
CAUTION: Ensure that that gears engage fully, and ALWAYS ensure that the
machine is fully stopped before attempting to change gears. NEVER change
gears on a running machine!
Select desired direction of rotation. This switch has 3 positions: up is forward,
middle is neutral, and down is reverse rotation.
WARNING: If the motor is switched on with the direction switch in the
neutral position, the machine will not turn but will be "live", as soon as
either forward or reverse is selected, the arbor will begin turning! Take due
care to avoid surprises. This is NOT the proper order of operations. Proper
order of operations for normal drilling (not tapping) is as follows: magnet: on
– direction: forward – motor: on – motor: off – magnet: off.
Adjusting Gibs (Dovetail Slides) Free Play
Periodically check, lubricate, and adjust as necessary. To adjust, use the supplied
wrench to loosen the lock nuts. Using the supplied Hex key, adjust the screws
evenly whilst moving the handle up and down, so that there is no free play, yet no
binding anywhere through its range of travel. Re-tighten the lock nuts.
Maintenance And Troubleshooting
Keep tool and cord clean. In case of electrical or mechanical malfunction,
immediately switch off the tool and disconnect the plug. Excessive sparking may
indicate the presence of dirt in the motor or worn out carbon brushes. Periodically
check brushes for wear and replace when they reach 1/4" (6mm), also check that
the machine is well lubricated. For all other service and maintenance, take the
machine to an authorized service center, or to Evolution USA, Iowa, if bought in
the USA, after typically 40 drilling hours, dependent upon the type of workload
it has endured.
4 SPEED GEAR CHART
CUTTERS
2-3/8" to 3" (60~75mm)
1-3/4" to 2-3/8" (45~60mm) 9/16" (15mm) or less
1-3/8" to 1-3/4" (35~45mm)
1-3/8" (35mm) or less
5
TAPS
9/16" to 15/16" (15~24mm)
N/A
N/A

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