ACDelco ARD847 Manuel Informations Du Produit page 10

IF THE DRILL STALLS, it is usually because it is being overloaded - RELEASE
THE TRIGGER IMMEDIATELY, remove drill from work, and determine the cause of
stalling. DO NOT CLICK THE TRIGGER OFF AND ON IN AN ATTEMPT TO
START A STALLED DRILL - THIS CAN DAMAGE THE DRILL.
To minimize stalling or breaking through the material, reduce pressure on the drill and
ease the bit through the last fractional part of the hole.
Keep the motor running when pulling the bit back out of a drilled hole. This will help
prevent jamming.
Drilling in Wood:
Holes in wood can be made with the same twist drills used for metal. These bits may
overheat unless pulled out frequently to clear chips from the flutes. Work that is likely
to splinter should be backed up with a block of wood.
Drilling in Metals:
Use a cutting lubricant when drilling metals. The exceptions are cast iron and brass,
which should be drilled dry. The cutting lubricants that work best are sulphurized
cutting oil or lard oil; bacon grease also serves the purpose.
NOTE
Continuous use in variable speed range is not recommended. It may
damage the switch and should be avoided.
NOTE
When change the position of the control button, making sure the variable
speed switch is released.
NOTE
The first time the tool is run after changing the direction of rotation, you
may hear a click on start up. This is normal and does not indicate a problem.
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