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6.
Ensure the wheelchair is fully open (see wheelchair manufacturer's handbook). Adjust the position of the
clamps so that they are directly opposite each other and the crossbar is at right angles to the wheelchair
frame. Now lightly tighten the clamp retaining bolts with the allen key provided.
7.
Compress the crossbar and remove from the wheelchair. Now hold the Powerpack so that the wheel is
making contact with the ground and the crossbar housing is pointing away from you. Keeping the crossbar
hand wheel to the left, insert the crossbar into the crossbar housing tube at the front of the motor.
8.
Ensure wheelchair brakes are on and fit the
Powerpack complete with crossbar on to the
wheelchair by holding it in position and placing the
right hand end of the crossbar over the mounting
bracket (Fig 4). Allow the spring to extend the left
hand tube over the other mounting bracket and
lightly tighten the hand wheel (Fig 3E). To avoid
damaging the crossbar, do not over tighten. The
crossbar must always be fully extended against the
mounting brackets to ensure safe attachment to the
wheelchair frame. The wheelchair should always be
fully extended prior to attaching the Powerpack and
once the chair has been sat in, ensure that it has not
expanded further and that the crossbar remains fully
extended against the mounting brackets.
9.
Check the alignment with the rear wheels and centre line of the wheelchair (see paragraph 3). Now firmly
tighten the clamp bolts on the crossbar mounting brackets. Next ensure the crossbar is firmly against the
mounting bracket shoulders and then tighten the crossbar hand wheel taking care not to damage the
crossbar by over tightening. The drive wheel or wheels can be centralized between the wheelchair wheels
by sliding the motor assembly along the crossbar. After centralising, tighten the crossbar wing nut (Fig
3F). Again, take care not to over tighten.
10. When using the Powerpack for the first time, if the wheelchair pulls to the left or right it is usually because
the drive wheel or wheels are not central. To remedy this, simply adjust the Powerpack on the crossbar as
in Paragraph 9 until the wheelchair pulls in a straight line. Similarly, if the mounting brackets have not
been fitted directly opposite each other, this will also cause the wheelchair to pull to one side or the other.
11. Place the battery in the tray with the writing on the bag
uppermost and the handle towards you. The battery bag is
securely held in place by Velcro (Fig 7).
12. The next item to fit is the handlebar control (Fig 5). This unit
performs many functions in addition to controlling the motor. I
replaces the original wheelchair handlebar grips as well as
providing extension handlebars for added comfort when
controlling the chair. It is set for right hand use but can be
reset for left hand operation.
13. Remove both handlebar grips from your wheelchair. These are
probably glued on, so the best way of removal is to carefully
cut the grip down one side with a sharp knife and peel off.
Taking each new handlebar grip in turn, remove the rubber end
caps and engage the long 4mm allen key T bar into the
expander bolt located approximately half way down the inside
of the new handlebar grip. Looking in the other end of the
handlebar grip, you will see an expanding bolt, which is the
Fig 4 Attaching Crossbar
t
Fig 5 Handlebar Control
5
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