Batteries And Charging - Sunrise Medical Samba 2 Manual De Usario

Dismounting the kerb
1. Reverse the chair slowly and
carefully until both rear wheels are
on the edge of the kerb again in a
90° position to the kerb (Fig. 50).
2. Reverse as slowly as possible off
the kerb with the rear wheels. You
will feel more secure if you can lean
forward, but if you can't, don't
worry, the wheelchair is extremely
stable. As long as you stay within
its limitation, you will be quite safe
(Fig. 51).
3. The front of the chair will naturally
follow down the kerb as you con-
tinue to drive slowly backwards
(Fig. 52).
WARNING:
1. Please show the utmost conside-
ration for the other traffic on the
road. If in any doubt, do not risk
crossing the road until you are
certain that it is safe.
2. Always cross the road as quickly
as possible; there may be other
traffic.
3. Do not attempt to go up or down
more than a 10 cm (4") high kerb
(only with kerb climber fitted).
4. Do not attempt to use the kerb
climber on a series of steps.
5. Do not attempt high kerbs if on
steep slopes or cambers.
6. Do not attempt any kerbs in the vicinity of drain covers,
uneven or gritty road surfaces.
7. Do not attempt to dismount a kerb any higher than 5 cm
(2") in the forwards direction.
8. Do not mount or dismount kerbs at an angle other than
straight on (90 degrees) to the edge of the kerb.
9. Prior to climbing ensure your legrests will clear the
kerb.
10. Take care of the anti tips which might interfere with the
kerb or the ground when mounting or dismounting a
kerb.
11. Do not try to climb an obstacle greater then 5 cm (2")
without a kerb climber.
Rev.A 0807/2000/ST/000690635.EMS

Batteries and charging

Batteries
The batteries are contained within the drive unit
located under the shroud. To remove the batteries,
should they require changing or maintenance, first
lift the shroud off the drive unit and then disconnect
the 2 pin Andersen connectors of each battery.
There are straps available on each battery where
they can be lifted out. For an easier access,
Fig. 50
de-dock the frame from the drive unit. The drive unit
will automatically tip onto the anti tip wheels into a
stable position. In this position please take out the
front battery first, then the rear one. If the drive unit
is still attached to the frame, please remove the rear
one first. To fit the batteries please proceed in the
opposite way.
Safety cut-outs
In the event of a short circuit there
are safety systems built into your
wheelchair to safeguard your
Fig. 51
electrical circuits. Fusible links are
connected on to the battery termi-
nal posts. Should your chair suffer
a short circuit these links will break
the circuit. To replace them contact
your local Sunrise Medical service
dealer, who will also diagnose the
fault (Fig. 53).
General information
Batteries are the power source for almost all of the
Fig. 52
modern mobility products available today. The
design of batteries used in mobility products is
significantly different to the batteries used to start a
car for example. Car batteries are designed to
release a large amount of power over a short period
of time, whilst mobility batteries (commonly called
deep cycle batteries) release their power evenly,
over a long period of time. Therefore, due to the
lower production volumes and increased technolo-
gical requirements, mobility batteries are typically
more expensive. Commonly two 12 volt batteries
are used together in a mobility product, giving a
total voltage of 24 volts. The size of the battery, (e.g.
its available power) is expressed in amps per hour
e.g. 30amp/hr. The higher the number, the bigger
the battery size, weight and, potentially, the greater
the distance you can travel. Sunrise Medical only fit
as standard maintenance free batteries into this
type of wheelchair.
Maintenance free batteries
This type of battery uses a method of carrying the
electrolyte commonly referred to as 'gel', that is
held within the battery case. As the name implies,
no maintenance is required other than regular
charging. You can safely transport this type of
battery without fear of acid spilling. Furthermore,
they are approved for transportation on aircraft.
Battery care
Below is set out a battery care plan for maintenance
free batteries. This has been agreed between Sunri-
se Medical and the battery manufacturers, to enable
you to get the best out of your batteries. If a diffe-
rent care plan is followed, this may result in lower
than expected performance from your mobility
vehicle.
Fig. 53
15
SAMBA