Invacare Pronto M91 Service Manual

SECTION 2—EMI INFORMATION
Part No. 1125038 21 Pronto
®
M91™and M94™
SECTION 2—EMI INFORMATION
 WARNING
CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION
REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC
INTERFERENCE ON YOUR POWERED WHEELCHAIR.
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 a certain intensity. This is called its
"immunity level." 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.
There are a number of 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.
The sources of radiated EMI can be broadly classified into three types:
1) Handheld Portable transceivers (transmitters receivers with the antenna
mounted directly on the transmitting unit. Examples include: citizens band (CB)
radios, "walkie talkie", security, fire and police transceivers, cellular telephones,
and other personal communication devices).
NOTE: Some cellular telephones and similar devices transmit signals while they are ON,
even when not being used.
2) Medium-range mobile transceivers, such as those used in police cars, fire trucks,
ambulances and taxis. These usually have the antenna mounted on the outside of
the vehicle; and
3) Long-range transmitters and transceivers, such as commercial broadcast
transmitters (radio and TV broadcast antenna towers) and amateur (HAM)
radios.
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,
AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as elec-
tric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to
your powered wheelchair.

Invacare Pronto M91 Specifications

Power and Performance

maximum speed	6.5 mph / 4.5 mph
incline capability	9˚
weight capacity	300 lb. (400 lb. option)

Wheel and Caster Sizes

front casters	6" x 2"
drive wheels	14" x 3"
rear casters	6" x 2"

Weight and Dimensions

length with footboard up	39"
length with footboard down	40" - 42"
width excluding joystick	25.9"
height	37" - 48"
seat width	18" - 22"
seat depth	16" - 20"
overall height	37" - 40"
back height	18"
seat-to-floor height	21" - 23"
weight with batteries	273 lb.
weight without batteries	199 lb.
wheelchair mass	275 lb.
turning radius front	19.5"
turning radius rear	21.5"
ground clearance	3.25"