Service work
490E75=0_C
72 | Ottobock
4.12 Selecting and adjusting the suspensions
CAUTION
Incorrect settings or dimensioning of the suspensions
Injuries to the user due to changed driving characteristics and insufficient tipping resistance
f
Check whether the selected suspension types are permissible for the new configuration. Replace the suspen-
sions if necessary.
f
Adjust the suspensions to the total weight of the wheelchair. Incorrect settings can lead to an incorrect seat
height, insufficient ground clearance and changed braking and driving characteristics. The motors can be da-
maged and the wheelchair may tip.
f
Do not attempt to compensate for insufficient spring stiffness by adjusting the spring tension.
4.12.1 Overview of suitable suspensions
Damper length
Front-wheel drive
(FWD) [mm]
Rear-wheel drive
(RWD) [mm]
Mid-wheel drive
(MWD) [mm]
Drive wheel suspension
150
150
Stop system
Suspension for caster wheel
swing arm
140
140
front 150 / rear 150
Spring stiffness of the suspensions
Mobility
base
Overall weight*
of the wheelchair
[kg]
Front-wheel drive (FWD)
Rear-wheel drive (RWD)
Drive wheel
spring stiffness
[lbs/inch]
Caster wheel
swing arm
spring stiffness
[lbs/inch]
Drive wheel
spring stiffness
[lbs/inch]
Caster wheel
swing arm
spring stiffness
[lbs/inch]
Size 1 (small)
up to 215
170
300
170
250
over 215 up to 239
250
300
170
300
over 239
250
350
250
300
Size 2
(medium)
up to 249
250
300
170
300
over 249
250
350
250
350
* The total weight is comprised of the wheelchair weight and maximum user weight.
Mobility
base
Overall weight* of
the wheelchair
[kg]
Mid-wheel drive (MWD)
Caster wheel swing arm
spring stiffness [lbs/
inch]
Stabilising wheel swing
arm
spring stiffness [lbs/
inch]
Drive wheel spring
stiffness
Size 1 (small)
up to 239
250
350
2 N/mm [11.4 lbs/inch]
over 239
350
450
2 N/mm [11.4 lbs/inch]
Size 2
(medium)
up to 249
250
350
2 N/mm [11.4 lbs/inch]
over 249
350
450
2 N/mm [11.4 lbs/inch]
* The total weight is comprised of the wheelchair weight and maximum user weight.
Summary of Contents for 490E75 Series
Page 1: ...490E75 0_C Service manual...
Page 38: ...Service work 490E75 0_C 38 Ottobock 57 58 59 60 61 62 63...
Page 41: ...Service work 490E75 0_C Ottobock 41 70 71 72 73 74 tt 75 76...
Page 55: ...Service work 490E75 0_C Ottobock 55 103 104 105 106 107 108 109 110...
Page 108: ...Service work 490E75 0_C 108 Ottobock 227 228 229 t 230 231 232...
Page 112: ...Service work 490E75 0_C 112 Ottobock 237 238 239 240 241...
Page 143: ...R Net wheelchair control 490E75 0_C Ottobock 143 Seat module pin assignment 287...
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