Berner 332502, Original Instructions Manual, Page: 25 / 168

ENGLISH
23
1. Grasp the rear half of the chuck with one hand
and use your other hand to rotate the front
half counterclockwise, as shown in Figure 4.
Rotate far enough so that the chuck opens
sufficiently to accept the desired accessory.
2. Insert the bit or other accessory about 3/4"
(19 mm) into the chuck and tighten securely
by holding the rear half of the chuck and
rotating the front portion in the clockwise
direction. When the chuck is nearly tightened,
you will hear a clicking sound. After 4–6 clicks,
the chuck is securely tightened around the
accessory.
3. To release the accessory, repeat step 1 listed
above.
WARNING: Do not attempt to tighten
drill bits (or any other accessory) by
gripping the front part of the chuck
and turning the tool on. Damage to the
chuck and personal injury may result.
KEYLESS CHUCK REMOVAL (FIG. 5)
Tighten the chuck around the shorter end of a hex
key (not supplied) of 1/4" (6 mm) or greater size.
Using a soft hammer or piece of wood, strike the
longer end in the counterclockwise direction. This
will loosen the chuck so that it can be unscrewed
by hand.
KEYLESS CHUCK INSTALLATION (FIG. 6)
Screw the chuck on by hand as far as it will go.
Tighten the chuck around the shorter end of a 1/4"
(6 mm) or larger hex key (not supplied) strike the
longer end in the clockwise direction with a soft
hammer.
MAINTENANCE
Your B
ERNER
power tool has been designed to
operate over a long period of time with a minimum
of maintenance. Continuous satisfactory operation
depends upon proper tool care and regular
cleaning.
WARNING: To reduce the risk of
injury, turn unit off and disconnect
machine from power source
before installing and removing
accessories, before adjusting or
changing set-ups or when making
repairs.
Be sure the trigger switch is
in the OFF position. An accidental
start-up can cause injury.
Motor Brushes
B
ERNER
uses an advanced brush system which
automatically stops the drill when the brushes
wear out. This prevents serious damage to the
motor. New brush assemblies are available at
authorized B
ERNER
service centers. Always use
identical replacement parts.
Lubrication
Your power tool requires no additional lubrication.
Cleaning
WARNING: Blow dirt and dust out of
the main housing with dry air as often
as dirt is seen collecting in and around
the air vents. Wear approved eye
protection and approved dust mask
when performing this procedure.
WARNING: Never use solvents or
other harsh chemicals for cleaning the
non-metallic parts of the tool. These
chemicals may weaken the materials
used in these parts. Use a cloth
dampened only with water and mild
soap. Never let any liquid get inside
the tool; never immerse any part of the
tool into a liquid.
Optional Accessories
WARNING: Since accessories, other
than those offered by B
ERNER
, have
not been tested with this product, use
of such accessories with this tool could
be hazardous. To reduce the risk of
injury, only B
ERNER
, recommended
accessories should be used with this
product.
Consult your dealer for further information on the
appropriate accessories.
Protecting the Environment
Separate collection. This product must
not be disposed of with normal
household waste.
Should you find one day that your B
ERNER
product
needs replacement, or if it is of no further use to
you, do not dispose of it with household waste.
Make this product available for separate collection.
Separate collection of used products
and packaging allows materials to be
recycled and used again. Re-use of
recycled materials helps prevent
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