U
M
SER
ANUAL
• The first rule to follow is to sit down correctly covering the whole depth of
the seat, leaning well and uniformly your back on the backrest, and regulate
the height of the seat in such a way that your legs are at a 90° angle. To do so,
move the lever on the right upwards. (1).
• Then, adjust the height lumbar support in order to find the best comfort of
the back. While sat, lift and let down at the same time the two knobs of the
lumbar support placed on the rear part of the backrest finding the desired
position (2).
• The button on the lever on the right-hand side allows you disable the
synchronised oscillation of the seat and of the backrest or to lock them at the
desired position.
To obtain a free oscillation, press the button; to lock the armchair at a definite
position press again the button (3).
P.S.: since the armchair is furnished with an anti-shock security device, to free
the oscillation, decrease the pressure on the backrest by leaning yourself a bit
forward. Only after doing so, you press the button and lean again against the
backrest. This movement will unlock the anti-shock device.
• The intensity of the oscillation can be regulated depending on the weight of
the user by moving the knob which is situated on the front part of the
armchair (4).
To obtain a hardening of the oscillation mechanism, turn the knob clock-wise
and vice-versa.