Operation - DeWalt DW899 Instruction Manual

DW899/384346 IM 5/2/02 1:44 PM
A GROUNDED B
OUTLET
BOX
GROUNDING PIN
SAVE THESE INSTRUCTIONS
Motor
Your D Walt tool is powered by a D
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supply agrees with the nameplate marking.
Volts 50/60 Hz or "AC only" means your tool must be operated on
alternating current and never with direct current.
Voltage decrease of more than 10% will cause loss of power and
overheating. D Walt tools are factory tested; if this tool does not operate,
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check power supply.
Switch
Depress the trigger switch to turn the tool on. Releasing the trigger
turns the tool off. To lock the trigger in the on position for continuous
operation, depress the trigger, push in the lock button on the left
side of the handle, and then release the trigger. To release the
locking mechanism, depress trigger fully, then release it.

Operation

The nibbler will cut U.S. standard 8-gauge mild steel and 3/16" non-
ferrous metals. It will also cut U.S. standard 10-gauge stainless steel
easily; however, due to hardness variations in stainless steel, it is best
to first consult your local D WALT field representative about such jobs
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in order to obtain maximum life and efficiency from your tool.
1. Always be sure that area to be cut is oiled. An oiler device is
located at the front of the tool, and will automatically oil the area to
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GROUNDING
MEANS
ADAPTER
GROUNDING PIN
Walt-built motor. Be sure your power
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be cut. Lubricant flow is controlled by turning the knurled knob
(Figure 1).
To refill automatic oiler, remove oil filler plug (Figure 1). Be sure vent
hole in plug is kept open to ensure poper flow. For cutting mild
steel, use SAE 20W oil; for non-ferrous metals, use light oil.
2. Properly adjust stripper.
a. Loosen the 2 stripper mounting screws (Figure 1).
b. Place metal to be cut between die and stripper.
c. Lock stripper into position so that the metal is flat against the
die, and the ball of the oiler in the stripper is just touching the
metal. Average clearance of .010"-.015" is preferred. If punch is
dulled, more clearance may be required to clear the resulting
burr.
d. Be sure stripper mounting screws are tightened securely.
3. Grasp the tool, turn switch on and feed tool into material. Hold tool
so that it feeds with minimum operator pressure.
NOTE: Hard materials will dull the punches and dies. When dulling
occurs, tool will become difficult to feed into material. In addition,
the metal will begin to show burrs along the cut. Keep dies and
punches sharp at all times.
Removing Punch
1. Operate the crank down mechanism (with a screwdriver) to align
the punch retaining set screw with the clearance hole at the rear of
the shoe.
2. Loosen punch retaining set screw until punch slides free.
3. Remove die by taking out the 2 die screws located at an angle at
the bottom rear of the shoe.
4. Remove the 2 stripper mounting screws. If there is any side play
or forward play, replace stripper or it will cause severe wear and
damage to the shoe.
5. Slide punch and stripper out of shoe.
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