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V. SAFETY INSTRUCTIONS
Your scooter can move on grass , gravel, dirt, and sand
surfaces, as well as hard paved or carpeted surfaces. However, extra
caution should be taken when operating your unit on uneven surfaces
other than flat surfaces.
There are some concerns about electromagnetic interference
to powered wheelchairs and scooters. You need to know what EMI
(Electromagnetic Interference) is and how to prevent such incidents.
The following paragraphs suggested by the FDA are intended to
provide you some important information about this.
CAUTION:
IT IS VERY IMPORTANT THAT YOU READ THIS
INFORMATION REGARDING THE POSSIBLE EFFECTS OF
ELECTROMAGNETIC INTERFERENCE ON YOUR
POWERED SCOOTER.
Electromagnetic Interference (EMI) From Radio Wave Sources
Powered wheelchairs and motorized scooters (in this text, both
will be referred to as powered wheelchairs) may be susceptible to
electromagnetic interference (EMI), which is interfering
electromagnetic energy (EM) emitted from sources such as radio
stations, TV stations, amateur radio (HAM) transmitters, two-way
radios, and cellular phones. The interference (from radio wave
sources) can cause the powered wheelchair to release its brakes, move
by itself, or move in unintended directions. It can also permanently
damage the powered wheelchair’s control system. The intensity of
the interfering EM energy can be measured in volts per meter (v/m).
Each powered wheelchair can resist EMI up to certain intensity. This
is called its “immunity lever.” The higher the immunity level, the
greater the protection. At this time, current technology is capable of
achieving at least a 20-v/m immunity level, which would provide
useful protection from the more common sources of radiated EMI.
The immunity level of this powered scooter as shipped, with no
further modification, is not known.
There are ample sources of relatively intense electromagnetic
fields in the everyday environment. Some of these sources are
obvious and easy to avoid. Others are not apparent and exposure is
unavoidable. However, we believe that by following the warnings
listed below, your risk to EMI will be minimized.
