Bosch Power Tools PS31-2A Cordless Drill User Manual


 
You will extend the life of your bits and do
neater work if you always put the bit in
contact with the work before pulling the
trigger. During the oper a tion, hold the tool
firmly and exert light, steady pressure. Too
much pressure at low speed will stall the tool.
Too little pressure will keep the bit from
cutting and cause excess friction by sliding
over the surface. This can be damaging to
both tool and bit.
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The trigger controlled variable speed feature
will eliminate the need for center punches in
hard materials. The variable speed trigger
allows you to slowly increase RPM. By using
a slow starting speed, you are able to keep
the bit from “wander ing”. You can increase
the speed as the bit “bites” into the work by
squeezing the trigger.
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Variable speed drills will double as a power
screwdriver by using a screwdriver bit in the
drill mode. The technique is to start slowly,
increasing the speed as the screw runs
down. Set the screw snug ly by slowing to a
stop. Prior to driving screws, pilot and
clearance holes should be drilled.
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This procedure shown in (Fig. 7) will enable
you to fasten ma terials together with your
Cordless Drill/Screwdriver without stripping,
splitting or separating the material.
FIG. 6
BATTERY
PACK
CHARGER
GREEN LIGHT
-12-
The purpose of the green light is to indicate
that the battery pack is fast-charging. It does
n
ot indicate the exact point of full charge.
The light will stop blinking in less time if the
battery pack was not completely discharged.
When the battery pack is fully charged,
unplug the charger (unless you're charging
a
nother battery pack) and slip the battery
pack back into the tool.
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FDrill same
diameter as
screw shank.
FCountersink
same diameter
as screw head.
FDrill 2/3 diameter and
2/3 of screw length for
soft materials, full
length for hard
materials.
Adjustable
Screw
Drill
Screw
Apply a slight
even pressure
when driving
screws.
FASTENING
WITH SCREWS
FIG. 7
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