Sahara HP7K User Manual page 5

is. At this time, current technology is capable of providing at least 20 V/m of immunity level, which
would provide useful protection against common sources of radiated EMI.
Following the warnings listed below should reduce the chance of unintended brake release or
powered wheelchair movement that could result in serious injury:
1. Do not turn on hand-held personal communication devices such as citizens band (CB) radios and
cellular phones while the powered wheelchair is turned on.
2. Behold of nearby transmitters such as radio or TV stations and try to avoid coming close to them.
3. If unintended movement or brake release occurs, turn the powered wheelchair off as soon as it is
safe.
4. Behold that adding accessories or components, or modifying the powered wheelchair, may make
it more susceptible to interference from radio wave sources (Note: It is difficult to evaluate the
effect on the overall immunity of the powered wheelchair).
5. Report all incidents of unintended movement or brake release to the powered wheelchair
manufacturer, and note whether there is a radio wave source nearby.
TURN OFF YOUR POWERED WHEELCHAIR AS SOON AS POSSIBLE WHEN
EXPERIENCING THE FOLLOWING:
‧ Unintentional motions
‧ Unintended or uncontrollable direction.
‧ Unexpected brake release
The FDA has written to the manufacturers of power wheelchairs asking them to test new products to
be sure they provide a reasonable degree of immunity against EMI. The FDA requires that a powered
wheelchair should have an immunity level at least 20 V/m, which provides a reasonable degree of
protection against more common sources of EMI. The higher the immunity level is, the greater the
protection is. Your powered wheelchair has an immunity level of 20 V/m which should protect
against common sources of EMI.
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