These armrests (without Pic.) can flap back upwards.
clockwise – higher counterpressure – for heavy user
counter clockwise – lower counterpressure – for lightweight user
4D armrests are:
For the individual adjusting regarding the body weight of the
user using the free swinging function the turn knob at the
mechanics has to be pulled out:
Pushing the lever down and press the torso against the back rest
(safety actuation system) – the synchronous mechanism free
swinging function is activated.
„
Inflatable pelvic props
Using the pump means increasing the support in two air cushions
with one being on top of the other. Lowering the air pressure by
means of the two press buttons at the pump means a decrease of
support of the respective air cushion.
ƒ
Spring tension settings
…
Folding armrests or 4D armrests:
The inclination of the folding armrests can be shifted with a
rotary wheel (handwheel) on the underside of the armrests.
Note:
When turning the hand wheel the folding armrest should
not be stressed.
• adjustable regarding width – lever under the seat
• height adjustable – push button at the outside of the armrest
Attention:
Basic condition for the longevity of the Back-UP is the
correct setting of the mechanics on the weight of the user.
• horizontally adjustable – by shifting the support plate
‡
Comfort head rest
Comfort head rest with adjustable side cheeks to be altered
regarding height and inclination.
ˆ
Back rest with shoulder support
The upper part of the back rest can be moved forward manually
in order to support the should by a maximum. The head rest
follows this movement.
†
Seat extension long|short
Push the press button. Chose the position and fix it by letting
loose (seat locks in steps).
• support plate 360° rotateable – push button on the inside of
the support plate
Seat height setting
Pull lever upwards – height can be set.
Release lever – seat height is fixed again.
You can use your Back UP fixed (3 positions possible) or using the
synchronous free swinging mode, permanently movable.
‚
Changes to the seat inclination / free swinging function
Pulling the lever upwards - mechanics is fixed.
These office chair is especially designed for 24/7 workspaces.
www.cento-as.com
SHORT
O P E R A T I N G
INSTRUCTIONS
Back-UP 24/7
EN
4D Armrests
Bottom view
