V. EMI (ELECTROMAGNETIC INTERFERENCE)
V. EMI (ELECTROMAGNETIC INTERFERENCE)
WARNING
Heed all warnings to reduce the risk of unintended brake
release or chair movement:
1. Beware of the danger from hand-held transceivers. (A
“transceiver” is a device that both sends and receives radio
wave signals). Never turn on or use a hand-held transceiver
while power to your chair is on. Use extra care if you
believe that such a device may be in use near your chair.
2. Be aware of nearby radio or TV stations, and avoid coming
close to them.
3. If unintended movement occurs, turn your chair off as soon
as it is safe to do so.
A. WHAT IS EMI?
WARNING
1. EMI means: electromagnetic (EM) interference (I). EMI comes
from radio wave sources such as radio transmitters and
transceivers.
2. There are a number of sources of intense EMI in your daily
environment. Some of these are obvious and easy to avoid.
Others are not, and you may not be able to avoid them.
3. Powered wheelchairs may be susceptible to electromagnetic
interference (EMI) emitted from sources such as radio sta-
tions, TV stations, amateur radio (HAM) transmitters, two
way radios, and cellular phones.
4. EMI can also be produced by conducted sources or electro-
static discharge (ESD).
B. WHAT EFFECT CAN EMI HAVE?
WARNING
1. EMI can cause your chair, without warning, to:
•
Release its brakes
•
Move by itself
•
Move in unintended directions
If any of these occurs, it could result in severe injury to you or
others.
2. EMI can damage the control system of your chair. This could
create a safety hazard, and lead to costly repairs.
C. SOURCES OF EMI
WARNING
The sources of EMI fall into three broad types:
1. Hand-Held Transceivers:
The antenna is usually mounted directly on the unit. These
include:
•
Citizens band (CB) radios
•
“Walkie-talkies”
•
Security, fire and police radios
•
Cellular phones
•
Lap-top computers with phone or fax
•
Other personal communication devices
NOTE–
These devices can transmit signals while they are on, even if not in use.
2. Medium-Range Mobile Transceivers:
These include two-way radios used in police cars, fire trucks,
ambulances and taxi cabs. The antenna is usually mounted on the
outside of the vehicle.
C. REVIEW THIS MANUAL OFTEN
Before using this chair you, and each person who may assist you,
should read this entire Manual and make sure to follow all instruc-
tions. Review the warnings often, until they are second nature to you.
D. WARNINGS
The word “WARNING” refers to a hazard or unsafe practice that
may cause severe injury or death to you or to other persons. The
“Warnings” are in four main sections, as follows:
1. V — EMI
Here you will learn about electromagnetic interference and
how it can affect your chair.
2. VI — GENERAL WARNINGS
Here you will find a safety checklist and a summary of risks
you need to be aware of before you ride this chair.
3. VII — WARNINGS — COMPONENTS & OPTIONS
Here you will learn about your chair. Consult your supplier
and your health care professional to help you choose the
best set-up and options for your safety.
4. X — BATTERIES
Here you will learn about battery and charger safety, and
how to avoid injury.
NOTE–
Where they apply, you will also find “Warnings” in other sections of this
Manual.
IV. NOTICE– READ BEFORE USE
A. CHOOSE THE RIGHT CHAIR & SAFETY
OPTIONS
Sunrise provides a choice of many power wheelchair styles, sizes
and adjustments to meet the needs of the rider. However, final
selection of a wheelchair rests solely with you and your health
care professional. Choosing the best chair for you depends on such
things as:
1. Your size, disability, strength, balance and coordination.
2. Your intended use, and your level of activity.
3. The types of hazards you must overcome in daily use (in
areas where you are likely to use your chair).
4. The need for options for your safety and comfort (such as
positioning belts or special seat systems).
B. ADJUST CHAIR TO YOUR ABILITY
You need to work with your doctor, nurse or therapist, and your
supplier, to fit this chair and adjust the controller settings for your
level of function and ability.
IV. NOTICE– READ BEFORE USE
E N G L I S H
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