Manual Sunrise Medical Helium 2013 (page 14 of 220) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Spanish, Norwegian, Finnish)

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Setting the directional stability



the underside of the fork. You can





or right.

Left – chair pulls to the left

Right – chair pulls to the right



again. Please set a 90° angle from

the fork to the floor.



Castor, Castor adapter, Castor fork

From time to time the wheelchair may veer slightly to the right or

left, or the castors may flutter. This may be caused by the

following:







not turn smoothly.

The optimum adjustment of the castors is required for the

wheelchair to run in a straight line.

Castors should always be adjusted by an authorized dealer. The

castor plates must be re-adjusted, and the wheel locks must be

checked any time the rear wheel position has been altered.

Castors

Adjusting the castor

To ensure that both forks are set

parallel, simply count the teeth

visible on both sides. After setting

the castor fork, the teeth will

guarantee a secure position,

allowing an adjustment of 16° in 2°

increments. Use the flat side on the

front of the castor fork to check for

a right-angled position to the



The patented design allows the castor fork to be turned, so that

it can be reset at right-angles to the ground when the seat angle

is changed.

Wheel alignment

Adjusting the wheel alignment

Important: To achieve the very best movement, the rear wheels

must be adjusted to their optimum position, which means

correctly adjusting the wheel alignment.

To do this, measure the distance between both wheels front and

rear to ensure that they are parallel to one another.

The difference between both measurements should not exceed

5 mm.

To adjust the wheels to make them parallel, loosen the screws

and turn the axle sleeve accordingly. Make sure that after any





HELIUM tracking adjustment



NOTE: A wheelchair with 0° camber cylinders cannot have toe-in

or toe-out. This setting is necessary only with 3° and 6° camber

cylinders.

The term "toe-in or toe-out" defines how well the rear wheels of

the chair are aligned in relation to the ground. This determines

how well the chair will run. Normal resistance or rolling

resistance is present when toe-in is set to zero.







is in the centre. Toe-in is now zero.



centred left-to-right. The gap should be the same on both sides,

or there should be no gap at all. Tighten the screws to 7 Nm.



Adjusting the rear wheelbase width

The rear wheelbase is defined as the distance between the

upper side of the rear wheels and the backrest tubes, and is



increased if a larger gap between the tyres and the optional



NOTE: When adjusting the

rear wheelbase, adjust first

one wheel then the other. If

both sides are loosened at the

same time, this will alter the



adjust the rear wheelbase, the



telescopically into or out of the



place when they reach the





the left side of the chair. Move the quick-release axle inwards or

outwards to achieve the desired wheelbase. Tighten the screws

to 7 Nm. Repeat this procedure on the right side of the chair and

adjust the gap so that it is the same amount as on the left side.

Angle-adjustable back

The backrest angle is adjusted

by altering the position of the

pin in the backrest mounting.



clicked into place in the hole

pattern on both sides, this

gives you an angle adjustment

of 8.5°.

Fit the red plastic pins into the

unused holes. To reach a



you open the allen key screw





This gives you 12° change in the back angle. Then move the pin





To reduce the play in the



released, then the optimal

position can be set using the





CAUTION !

The screws must be

re-tightened. Otherwise the

angle adjustment will be lost.

Folding backrest

Release the backrest by pulling the cord. At the same time, push

it forward to fold it down. To return the backrest to its original

position, this must be pulled back as far as possible, until it locks

into place on both sides.

CAUTION !

When folding the backrest down, please make sure that your

fingers do not get caught.

Backrest

Fig. 5.21

Fig. 5.22

Fig. 5.15

-8

Fig. 5.16

BALL

Fig. 4.17

Fig. 4.18

Fig. 4.19

Fig. 5.20

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Sunrise Medical Helium 2013 Manual

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