Husqvarna DXR250 Operator's Manual page 21

Education and training
New operators must be trained by experienced operators
with the capacity to use sound judgment when
supervising the work.
• Practice stopping the machine and locating the stop
button quickly. Practice manenvering in different
directions, on a slope and different surfaces.
• Test the machine's stability under controlled
conditions. Practice rapid evacuation.
• On completion of the training, the operator should be
properly acquainted with the machine's limitations
with respect to reach, capacity and stability, and also
be able to maneuver the machine safely.
Maneuvering
General
• If several machines are used at the same workplace
there is a risk of mixing up the remote controls.
Switch on the current to the remote control and the
machine. Press the horn to see which machine is
connected to the remote control. The machine will
beep and flash three times. Do not activate the remote
control before you have ensured that the correct
machine is being operated.
• Wait until the remote control has been turned off and
the motor has stopped before you enter into the
machine's risk area.
• Never leave the machine unsupervised with the motor
running.
• The machine can overturn during work. During
operation the machine must be positioned as level as
possible and the outriggers must be fully extended.
• In some cases it can be difficult to determine which
end of the machine is the front and which is the rear.
Look at the direction markings on the sides of the
machine's tracks to avoid incorrect operation.
• When work is finished, operate the arm to rest against
the ground before turning off the machine.
Outriggers/dozer blade
• When the outriggers/dozer blades are raised, the arm
should be contracted to minimize risk of the machine
toppling over.
• The machine's outriggers/dozer blade can lift from the
ground, especially when working with the hydraulic
breaker or bucket. The higher the machine is lifted, the
greater load the rest of the support function is exerted
to.
• The risk of the machine overturning or landing with
great force on the outriggers/dozer blades is greater
when working with the hydraulic breaker in case of
strike through. Take this risk into account and institute
appropriate safety measures to avoid any personal
injury or mechanical damage.
SAFETY INSTRUCTIONS
Rotation function
• If there is a breakdown in the machine's rotation
mechanism the machine's upper part may rotate
freely, potentially causing personal injury or
mechanical damage. Keep your distance.
• The machine is most stable when working directly
forwards or backwards. When the machine's upper
part rotates to the side, the outriggers should be down
and the arm system maneuvered so that it is as close
to the ground as possible.
• In some cases it can be difficult to predict the direction
of rotation. Operate the turning motion carefully until
you have apprehended the direction of rotation.
Arm system
• Do not use the arm system and the rotation function
for striking, demolishing or scraping.
• Do not operate the arm with the machine's outriggers/
dozer blade raised. Outriggers/dozer blades give
stability and reduce the risk of the machine
overturning.
• When the arm system's reach is being used, the load
increases as does the risk of tipping. Position the
machine as close to the working object as possible.
• Do not secure the machine to fixed objects, e.g. walls,
to increase the force on the working object. Both the
machine and the tool can be subject to overloading.
• Do not work with the machine's cylinders in the inner
or outer end positions to avoid overloading. Leave a
few centimeters to the maximum position. The
hydraulic oil then has a greater capacity to alleviate
impacts and vibrations.
• There are two working positions that put a lot of strain
on individual cylinders.
Cylinders 1 and 2 are in their outer positions and the
hammer is working in the upward direction. Never
operate the cylinders to their end positions.
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English 21