Permobil Chairman HD3, Service Manual, Page: 25 / 32

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Seat electronics
Fig. 52. Removing the seat plate.
Fig. 53. Seat function board
Fig. 54. Safety senders. Fig. 55. Safety sender
mountings.
Fig. 56. Safety sender
electrical connections.
Seat electronics
Seat function board
Removal
1. Raise the seat to facilitate access from
underneath.
2. Put the circuit breaker in the “OFF” position,
see page 23.
3. Remove the seat plate, it is attached by four
bolts, see fig. 52.
4. Disconnect all cable connectors on the board
that is to be changed. Note the location of the
cables for fitting the new board.
5. Free the card from the box by pressing
together the two plastic pins that stick out on
the underside of the box.
Fitting
Fitting is the reverse procedure.
Safety senders
There are four safety senders on the seat, two for the
seat elevator, one under the seat plate and one next
to the tilt adjuster, see fig. 54. All four senders have
the same type of mounting, so removing and fitting
are similar. Removing/fitting the safety senders for
the seat elevator are described below.
Removal
1. Raise the seat to facilitate access from
underneath.
2. Put the circuit breaker in the “OFF” position,
see page 23.
3. Detach the sender by unscrewing the nut,
see fig. 55
4. Cut off the tie holding the sender cover.
5. Disconnect the cable connectors, see fig 56.
Note the location of the cables for refitting.
Fitting
Fitting is the reverse procedure.