Osmond Ergonomics GRAHL DUO-BACK 11 User manual

GRAHL DUO-BACK 11 & 12 - INSTRUCTIONS
1.
SEAT HEIGHT
2. ASYNCHRO ADJUSTMENT
3. WEIGHT TENSION CONTROL
To raise the chair height, lift this
lever on the right-hand side (whilst
facing away from the chair) whilst
unseated. To lower the chair height,
lift this lever whilst seated.
On the left hand-side (whilst seated)
pulling up this lever the chair
mechanism will be in free float. To
lock asynchronous mechanisms
simply find a position you find
comfortable and lower the lever to
lock it off.
First pull this out sideways to the
right as this will make it easier for
you to adjust. By rotating the handle
clockwise you will increase the level
of resistance to the asynchro action
of the chair and by rotating it
anticlockwise, the resistance is
reduced.
4. SEAT TILT (IF FITTED) 5. SLIDING SEAT 6. BACK HEIGHT ADJUSTMENT
Push the lever on the right-hand side
(whilst seated) pull down and
backwards to release the independent
seat tilt. Adjust the seat in angle back
or forth and lock in the desired
position by pushing this lever down
and forwards.
Depress this button and slide the seat
back and forth to adjust the seat to
your leg length. Releasing the button
will lock the seat in place
Turn the bottom wheel in an
anticlockwise direction to loosen the
back rest; with your free hand raise or
lower the back rest to the desired
height and lock it in place by turning
this wheel in a clockwise direction.

7. BACK WIDTH ADJUSTMENT 8. ARM HEIGHT ADJUSTMENT 9. ARMREST PAD ADJUSTMENT
Turn the top wheel in a clockwise
direction to decrease the width of
the back rest pads and in an anti-
clockwise direction to increase the
width.
Press and hold this button, raise or
lower the arm rest to the desired
position and release the button.
The arm rest pad tops can be slid
forwards and backwards from the
central position by pushing the top
armrest pad forwards or
backwards.
10. ARMREST PAD ROTATION
The arm rest pad tops can rotate 360
degrees by pressing this button and
twisting the arm rest top either
clockwise or anti-clockwise.
11. ARM WIDTH SPACE
ADJUSTMENT (IF FITTED)
12. HEADREST ADJUST
Start by releasing the small lever on
the underside of the arm by pulling it
down. Adjust accordingly then to
tighten pull lever back to start position.
Push the button on the rear of the chair
and raise, or lower the headrest to
adjust the headrest height. Push the
headrest forwards or backwards to
adjust its angle.