ERGO-FIT POWERLINE 4000, Руководство пользователя, Страница: 54 / 114

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Setup
transferred to the outer border of the eccentric
disc via a flat belt.
The edge of the eccentric does not form a
concentric radius (constant distance between
outer edge and rotation axis) around the rotation
point of the disc but an eccentric radius (variable
distance between outer edge and rotation axis).
The distance between the respective surface
location of the weight plate (load) and the rotation
point determines the length of the lever arm with
which the weight pulls the plate. This distance is
called the load arm. In contrast, the length of the
lever arm (against which the trainee works)
determines the so-called moment arm. According
to the lever principle (Load x load arm = moment
x moment arm), an eccentric transfers a high
torque (more load) on the rotation axis if the weight is transferred via a long load arm to the
rotation axis and vice versa (i.e. via a point of the disc with a longer distance to the rotation
point). Thus, the maximum strain on the muscles may be realised by a high torque already at
the beginning of the motion and will be maintained almost until the final position is reached.
To meet individual needs, the moment arm may be adjusted in relation to the eccentric to
allow for strain adjustment by modifying the link positions.
Some machines of the POWER LINE 4000 are not equipped with an eccentric. This is due to
the vertical (LAT PULL 4000, SHOULDER ABDUCTION 4000, SHOULDER PRESS 4000) or
horizontal (CHEST PRESS 4000, LEG PRESS 4000) exercise motion.
6.7 Function test
Function test: How to proceed:
⊗ Check if all handling parts are locked properly before training. Make sure there are
no loose or badly mounted handling parts.
⊗ Check the cable and wires for damage.
⊗ Check moving parts (steel cables, rollers) for proper function.
⊗ Check the rests and paddings for damage.
⊗ Check if all adjustable parts function properly.
4 6
Eccentric (example:
LEG EXTENSION 4000)