Safety Instructions For Maintenance Work On Electrical Components; Effects Of Electromagnetic Interference; General Information On Electromagnetic Interference - Otto Bock Skippi Plus Service Manual

Safety instructions

2.6 Safety instructions for maintenance work on electrical components

NOTICE
Risk of damage due to improper preparation for maintenance work.
• If the driving function is not required, turn off the control unit or jack up the drive wheels in order to
prevent uncontrolled operation through accidental joystick activation.
• When carrying out maintenance work make sure water does not come into direct contact with the
electronics or the battery.
• When attaching plug connectors on the controller make sure the contacts are assigned correctly.
CAUTION
Risk of injury while working on the battery. Only use Ottobock battery chargers which have been
tested and approved for use with the given batteries by the manufacturer (observe information on
battery charger). Failure to do so can result in a battery explosion and endangerment to health due
to contact with battery acid.
Smoking and open flames are prohibited while working on the batteries. Sparks must be avoided.
Drive batteries can supply very large amounts of energy and may arc if they are short-circuited. The-
refore, always disconnect the batteries when working on the motor control or wiring.
NOTICE
Risk of battery damage. In order to prevent short circuits, always use insulated tools when working
on the batteries.
Prevent deep discharge of the batteries in order to avoid loss of functionality and permanent battery
damage.
Ensure correct polarity when connecting the batteries.
NOTICE
Damage to the battery charger. Prevent overheating of the charger during the charging process.
Ensure that the cooling fins on the back of the device are not covered.
INFORMATION
During extended periods of disuse or shipment of the power wheelchair, remove the fuse from the
fuse holder to prevent deep discharge of the batteries due to standby consumption.

2.7 Effects of electromagnetic interference

WARNING
Risks of injury and product damage due to electromagnetic interference. It is very important
that you read this information regarding the possible effects of electromagnetic interference on your
power wheelchair.

2.7.1 General information on electromagnetic interference

Power wheelchairs may be susceptible to electromagnetic interference (EMI), which is inter-
U
fering electromagnetic energy (EM) emitted from sources such as radio stations, TV stations,
amateur radio (HAM) transmitters, two-way radios, and cellular phones.
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