Milwaukee V28 Manuel De L'utilisateur page 5

OPERATION
WARNING
To reduce the risk of injury, keep
hands away from the bit and all mov-
ing parts. Always wear safety goggles
or glasses with side shields.
Using the Forward/Reverse Switch
The forward/reverse switch may be set to
three positions: forward, reverse and lock.
Due to a lockout mechanism, the forward/
reverse switch can only be adjusted when
the trigger is not depressed. Always al-
low the motor to come to a complete stop
before using the forward/reverse switch.
Fig. 6
Forward
Forward/
Reverse
switch
Reverse
1. For forward (clockwise) rotation,
push the forward/reverse switch
in the direction shown. Check the
direction of rotation before use.
2. For reverse (counterclockwise)
rotation, push the forward/reverse
switch in the direction shown. Check the
direction of rotation before use.
3. To lock the trigger, push the forward/
reverse switch to the center position.
The trigger will not work when the
forward/reverse switch is in the
locked position. Always lock the
trigger or remove the battery pack
before performing maintenance, chang-
ing accessories, storing the tool and any
time the tool is not in use.
WARNING
To reduce the risk of explosion,
e l e c t r i c s h o c k a n d p r o p e r t y
damage, always check the work area
for hidden pipes and wires before
drilling.
WARNING
To reduce the risk of injury, only
grasp tool by handle and red
insulated surfaces (Fig. 7). Do
not hold gray gear case when
impacting or drilling.
Fig. 7
Starting, Stopping and Controlling
Speed
This impact wrench may be operated at any
speed from 0 to full speed.
1. To start the tool, grasp the handle fi rmly
and pull the trigger.
2. To vary the speed, increase or
decrease the pressure on the trigger.
The further the trigger is pulled, the
greater the speed.
3. To stop the tool, release the trigger.
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Electric Brake
The electric brake engages when the
trigger is released, causing the socket
to stop and allowing you to proceed with
your work. Generally, the socket stops
within two seconds. However, there may
be a delay between the time you release
the trigger and when the brake engages.
Occasionally the brake may miss completely.
If the brake misses frequently, the impact
wrench needs servicing by an authorized
MILWAUKEE service facility.
Impacting Techniques
The longer a bolt, screw, or nut is impacted,
the tighter it will become. To help prevent
damaging the fasteners or workpieces,
avoid excessive impacting. Be particularly
careful when impacting smaller fasteners
because they require less impacting to reach
optimum torque.
Practice with various fasteners, noting the
length of time required to reach the desired
torque. Check the tightness with a hand-
torque wrench. If the fasteners are too tight,
reduce the impacting time. If they are not
tight enough, increase the impacting time.
Impacting for two seconds is generally
suffi cient for a 3/8" bolt and one second
for a 5/16" bolt. However, oil, dirt, rust or
other matter on the threads or under the
head of the fastener affects the degree of
tightness.
The torque required to loosen a fastener
averages 75% to 80% of the tightening
torque, depending on the condition of the
contacting surfaces. However, if rust or
corrosion causes seizing, more torque may
be required.
On light gasket jobs, run each fastener down
to a relatively light torque and use a hand
torque wrench for fi nal tightening.
V28™ Lithium-Ion Battery Pack
Unlike other battery pack types, Lithium-Ion
battery packs deliver fade-free power for their
entire run time. The tool will not experience
a slow, gradual loss of power as you work.
To signal to you that the V28 battery pack
is at the end of its run time and needs to be
charged, power to the tool will drop quickly.
When this happens, remove the tool from
the workpiece and charge the battery pack
as needed.
Battery Pack Protection
To protect itself from damage and extend its
life, the V28 battery pack's intelligent circuit
will turn off the battery pack if its internal
temperature becomes too high. This could
happen in extremely high torque, binding
and stalling situations. The pack must be
placed on the charger to turn it back on.
The charger's light indicator will fl ash red,
indicating that the pack is too hot. Once the
light is continuously red, the pack has cooled
and can be used again.
Cold Weather Operation
The V28 Lithium-Ion battery pack can be
used in temperatures down to -4°F. When
the battery pack is very cold, it may pulse for
the fi rst minute of use to warm itself up. Put
the battery pack on a tool and use the tool in
a light application. After about a minute, the
pack will have warmed itself up and operate
normally.
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