Promaker PRO-TP500, User Manual

Page: 13 / 40

13
The workpiece to be drilled should
be secured in a vice or with clamps
to keep it from turning as the drill bit
rotates (Fig. 7).
1. Check the drill bit to make sure it
is firmly locked into the drill chuck,
and verify that the forward/reverse
switch is in the forward position.
2. Hold the drill firmly with both
hands whenever possible. Use one
hand to grasp the handle and switch.
NOTE: Make sure the hand placed
on the body of the drill does not
cover the air vents. Covering these
air vents will reduce motor cooling,
and possibly lead to overheating the
motor.
3. While holding the drill firmly, place
the point of the drill bit at the point
to be drilled. Squeeze the switch
trigger to start the drill.
NOTE: Always use a higher drill
speed when drilling small holes. Use
a slower drill speed when drilling
large holes.
4. Move the drill bit into the workpiece
applying only enough pressure to
keep the bit cutting. Do not force the
drill bit or apply sideways pressure
to elongate the hole.
WARNING: Be prepared for
binding and bit breakthrough.
When these situations occur,
the drill bit has a tendency to
grab the workpiece. This action
will kick the drill opposite to the
direction of the drill bit rotation,
and could cause loss of control
when breaking through material
as you complete drilling the hole.
If you are not prepared, this loss
of control can result in serious
injury.
When drilling metals, use light oil on
the drill bit to keep it from overheating.
The oil will prolong the life of the drill
bit and improve the cutting action.
If the bit jams in the workpiece, or
if the drill stalls, release the trigger
switch immediately. Remove the bit
from the workpiece and determine
the reason for jamming.
REMOVING THE CHUCK
Fig.8