GF91.25-P-0001Q Multicontour Seat (MCS), Function

GF91.25-P-0001Q Multicontour Seat (MCS), Function
- with CODE (404) Left multicontour seat
- with CODE (405) Right multicontour seat

Component Identification:

Function requirements:
^ Circuit 15 or circuit 15R ON
^ No overvoltage or undervoltage
^ No damage to the compressed air supply.

Function
The multicontour seat pneumatic pump (M40) is supplied with voltage by the rear SAM control unit with fuse and relay module (N10/2) and builds up the required overpressure.

The inflating and deflating of the individual air cushions is controlled manually via the following control valves:
^ Control valve for seat cushion fore/aft adjustment
^ Control valve for lower lumbar support adjustment
^ Control valve for upper lumbar support adjustment
^ Control valve for side bolsters adjustment

The multicontour seat can thus be adjusted individually.

The individual adjustment of the contour and the surface hardness of the backrest and of the seat cushion is made possible by filling and purging.

The air cushions are arranged as follows:
^ on the left-and right-hand sides of the backrest
^ in the upper lumbar support area
^ in the lower lumbar support area
^ in the front upper leg area of the seat cushion

Lumbar support = curvature of spine in lumbar region.

Adjustment of seat cushion length
The front area of the multicontour seat cushion is adjusted using the control valve for seat cushion fore/aft adjustment.

When actuating the control valve for seat cushion fore/aft adjustment in the (+) or (-) direction, the seat cushion contour changes in the upper leg area by inflating or deflating the air cushion.

Setting lower lumbar area
The lower lumbar support area of the multicontour backrest is adjusted using the control valve for lower lumbar support adjustment.

When actuating the control valve for lower lumbar support adjustment in the (+) or (-) direction, the backrest contour changes in the lower lumbar support area by inflating or deflating the air cushion.

Setting upper lumbar area
The air cushion in the upper lumbar support area of the multicontour backrest is adjusted with the control valve for upper lumbar support adjustment.

When actuating the control valve for upper lumbar support adjustment in the (+) or (-) direction, the backrest contour changes in the upper lumbar support area by inflating or deflating the air cushion.

Setting lateral support
The lateral support of the multicontour backrest is adjusted using the control valve for side bolsters adjustment.

When actuating the control valve for side bolsters adjustment in the (+) or (-) direction, the air cushions of the left and right side bolsters of the multicontour backrest are inflated or deflated.