Maintenance - Hart HPDD50 Manual Del Operador

OPERATION
Depress the switch trigger to start the drill.

Move the bit into the workpiece, applying only enough

pressure to keep the bit cutting or driving the screw. Do
not force the drill or apply side pressure to elongate a
hole. Let the tool do the work.
WARNING:
When drilling, be prepared for binding at bit breakthrough.
When these situations occur, drill has a tendency to grab
and kick opposite to the direction of rotation and could
cause loss of control when breaking through material. If
not prepared, this loss of control can result in possible
serious injury.
When drilling hard, smooth surfaces, use a center punch

to mark the desired hole location. This will prevent the bit
from slipping off-center as the hole is started.
If the bit jams in the workpiece or if the drill stalls, stop

the tool immediately. Remove the bit from the workpiece
and determine the reason for jamming.
NOTE: This drill has an electric brake. When the switch
trigger is released, the chuck stops turning. When the brake
is functioning properly, sparks will be visible through the
vent slots on the housing. This is normal and is the action
of the brake.
NOTE: If operation creates considerable dust, frequent
vacuuming of the work area is recommended.

MAINTENANCE

WARNING:
When servicing, use only identical replacement parts.
Use of any other part could create a hazard or cause
product damage.
NOTE: ILLUSTRATIONS START ON PAGE 9
AFTER FRENCH AND SPANISH LANGUAGE SECTIONS.
WOOD AND METAL DRILLING
For maximum performance, use high speed steel bits for
wood or metal drilling. Select drilling mode. Begin drilling
at a very low speed to prevent the bit from slipping off the
starting point.
Wood Drilling
Increase the speed as the drill bit bites into the material.

When drilling through holes, place a block of wood behind

the workpiece to prevent ragged or splintered edges on
the back side of the hole.
Metal and Steel Drilling
Use a light oil on the drill bit to keep it from overheating.

The oil will prolong the life of the bit and increase the
drilling action.
Maintain a speed and pressure which allows cutting

without overheating the bit. Applying too much pressure
will:
• Overheat the drill;
• Wear the bearings;
• Bend or burn bits; and
• Produce off-center or irregular-shaped holes.
When drilling large holes in metal, start with a small bit,

then finish with a larger bit.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and can be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
7 – English