5890/5891 Rotational Friction Control; Twenty-Five Degree Rotation Stop - Mizuhosi 5943 Manuel Du Propriétaire

3.3 5890/5891 Rotational Friction Control

The rotational friction control is located at both the head and foot end columns. At the
head end, the rotation friction control is the large right-angled lever on top of the head
end control box (see Figure 13). At the foot end, the rotation friction control is the black
lever that is located on the lower side of the control box (see Figure 15). The rotation
friction control may be tightened to act as a friction brake or it can be adjusted to hold
the table top at any degree of lateral tilt. As a friction brake, it can be loosened to
maintain the desired amount of resistance while still allowing the table top to be
adjusted to a different degree of tilt. When completely loose, the rotation friction control
will facilitate 180 degree rotations.
increase friction and counterclockwise to reduce friction. It is recommended that the
rotation friction control be left in the maximum friction position (fully clockwise)
whenever table top movement is not intended.
NOTE: Because the foot end rotation friction control lever has limited range of
movement, occasionally it may not be possible to fully loosen or tighten the brake with
one turn of the handle. In that case, once the end of the movement range has been
reached, pull the handle down. This will disengage the mechanism and allow the
handle to be returned to its starting position without affecting the amount of friction.
Repeat the process until the desired amount of friction is achieved.

3.4 Twenty-Five Degree Rotation Stop

Each modular base is equipped with a 25-degree rotation stop. The rotation stop
is actuated by the lever located on the left side of the control box near the top of
the head end column. It can be easily activated with the left hand when standing
at the head end of the table (see Figure 16). When engaged, the rotation stop
prevents lateral rotation greater than 25 degrees from the horizontal position.
The rotation stop should be left in the engaged position and disengaged only
during a 180-degree rotation.
25 Degree rotation stop
Figure 16: Head end column 25 degree rotation stop (5890/5891 base shown)
MIZUHOSI 2009
Rotate the rotation friction control clockwise to
Crossbar
Figure 15: Foot end column (5890/5891 base shown)
Crossbar
Rotation
friction
control
Disengage motion
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NW0504 Rev. D