Comfort LY-EB103, User Manual

Page: 33 / 41

EMI/RFI
Laboratory tests performed by the Food and Drug Administration FDA
have shown that radio waves can cause unintended motion of electric
power chairs. Radio waves are a form of electromagnetic energy
EM .
When electromagnetic energy adversely affects the operation of an
electrical device, that adverse effect is called Electromagnetic
Interference
EMI or Radio Frequency Interference RFI .
The following FAQs summarize what you should know about EMI/RFI.
Use this information to minimize the risk that EMI/RFI will adversely
affect your power chair.
Radio waves are emitted from the antennas of cellular phones, mobile
two-way radio
such as walkie-talkies and CBs , radio stations, TV
stations, amateur radio HAM transmitters, wireless computer links,
microwave sources, and paging transmitters. Radio waves are a form
of EM. Because EM is more intense closer to transmitting antennas
sources of emission , the EM fields from two-way radios are of
special concern to electric power chair users.
EMI/RFI Warnings
EMI/RFI Frequently Asked Questions FAQS
Where do radio waves come from?
This is difficult to predict. The answer would depend on a number of
factors:
The strength of the radio waves.
The construction of your particular power chair.
The location of your power chair
whether it is on level ground or on
an incline .
Whether or not your power chair is in motion.
The motion of any electric power chair affected by EMI/RFI can be
erratic. The power chair may come to a sudden stop or move in an
uncontrolled manner. Also, it is possible for EMI/RFI to release the
brakes of an electric power chair. Some intense EMI/RFI can even
damage the control system components of an electric power chair.
If EMI/RFI affects my power chair, what kind of motion should I expect?
-31-