Invacare Pronto M91 User manual

Owner’s Operator and Maintenance Manual
DEALER: This manual MUST be given to
the user of the wheelchair.
USER: BEFORE using this wheelchair, read
this manual and save for future reference.
For more information regarding
Invacare products, parts, and services,
please visit www.invacare.com
Pronto® M91™
with SureStep®

Pronto® M91™ with SureStep® 2Part No. 1141450
 WARNING
A qualified technician MUST perform the initial set up of this wheelchair. Also, a
qualified technician MUST perform all procedures in the service manual.
DO NOT use this product or any availa le optional equipment without first
completely reading and understanding these instructions and any additional
instructional material such as owner’s manuals, service manuals or instruction
sheets supplied with this product or optional equipment. If you are una le to
understand the warnings, cautions or instructions, contact a healthcare
professional, dealer or technical personnel efore attempting to use this equipment
- otherwise, injury or damage may occur.
 ACCESSORIES WARNING
Invacare products are specifically designed and manufactured for use in conjunction
with Invacare accessories. Accessories designed y other manufacturers have not
een tested y Invacare and are not recommended for use with Invacare products.
REFERENCE DOCUMENTS
MANUAL PART NUMBER
MK5™NX™Electronic Owner Manual 1110532
M91/M94™Service Manual 1125038
Qua Link Instruction Sheet 1134844
NOTE: Updated versions of this manual are available on www.invacare.com.

TABLE OF CONTENTS
Part No. 1141450 3Pronto® M91™ with SureStep®
TABLE OF CONTENTS
....................................................................................................... 2
REFERENCE DOCUMENTS ................................................................. 2
REGISTER YOUR PRODUCT ............................................................... 6
SPECIAL NOTES ................................................................................ 7
LABEL LOCATIONS ........................................................................... 9
M91 Standard...............................................................................................................................................9
M91 Heavy Duty.......................................................................................................................................10
All heelchairs.........................................................................................................................................10
TYPICAL PRODUCT PARAMETERS .................................................. 11
PRONTO M91..........................................................................................................................................11
SECTION 1—GENERAL GUIDELINES ................................................. 13
Controller Settings/Repair or Service .................................................................................................13
Accessories Information .........................................................................................................................13
Operation Information............................................................................................................................13
Batteries......................................................................................................................................................15
Charging Batteries ...............................................................................................................................15
Grounding Instructions ...........................................................................................................................16
Rain Test.....................................................................................................................................................16
eight Training ........................................................................................................................................17
eight Limitation.....................................................................................................................................17
SECTION 2—EMI INFORMATION ..................................................... 18
SECTION 3—SAFETY/HANDLING OF WHEELCHAIRS ......................... 2
Stability and Balance.................................................................................................................................20
Coping ith Everyday Obstacles.........................................................................................................21
Pinch Points................................................................................................................................................22
A Note to heelchair Assistants ........................................................................................................22
Lifting/Stairways ........................................................................................................................................23
Transferring To and From Other Seats ..............................................................................................24
Reaching, Leaning and Bending - Forward ..........................................................................................25
Reaching and Bending - Backward ........................................................................................................25

TABLE OF CONTENTS
Pronto® M91™ with SureStep® 4Part No. 1141450
TABLE OF CONTENTS
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING .................... 26
Safety Inspection Checklists...................................................................................................................26
Inspect/Adjust Initially .........................................................................................................................26
Inspect/Adjust eekly........................................................................................................................27
Inspect/Adjust Monthly.......................................................................................................................27
Inspect/Adjust Periodically.................................................................................................................27
Troubleshooting Guide ...........................................................................................................................28
Troubleshooting - Electrical...................................................................................................................29
Information Gauge Display Diagnostics .....................................................................................29
Service Indicator Light Diagnostics .............................................................................................29
Checking Battery Charge Level.............................................................................................................30
SECTION 5—WHEELCHAIR OPERATION ........................................... 31
Operating the heelchair......................................................................................................................31
Turning the Power On/Off................................................................................................................31
On/Off Button ......................................................................................................................................31
Using the Joystick to Drive the heelchair..................................................................................31
SPJ™+ Joystick Switches and Indicators .............................................................................................33
On/Off Button ......................................................................................................................................33
Speedometer.........................................................................................................................................33
Speed Control Buttons.......................................................................................................................33
Joystick....................................................................................................................................................34
Charger/Programming Input..............................................................................................................34
Service Indicator...................................................................................................................................34
Information Gauge Display ................................................................................................................34
SECTION 6—ARMS ......................................................................... 35
Adjusting Van Seat Armrests .................................................................................................................35
Angle .......................................................................................................................................................35
Height .....................................................................................................................................................35
SECTION 7—SEAT ........................................................................... 36
Adjusting the Headrest ...........................................................................................................................36
Adjusting the Back Angle ........................................................................................................................36
Removing/Installing the Seat Assembly................................................................................................36
Removing ...............................................................................................................................................36
Installing..................................................................................................................................................37
Adjusting the Seat Height .......................................................................................................................37
Adjusting Seat Position on Seat Frame................................................................................................39
Adjusting Seat Depth ...............................................................................................................................40
Replacing the Seat Positioning Strap ....................................................................................................41

TABLE OF CONTENTS
Part No. 1141450 5Pronto® M91™ with SureStep®
TABLE OF CONTENTS
SECTION 8—FOOTBOARD ASSEMBLY .............................................. 42
Removing/Installing the Footboard Assembly....................................................................................42
Removing ...............................................................................................................................................42
Installing..................................................................................................................................................42
Adjusting the Footboard Assembly ......................................................................................................43
Angle .......................................................................................................................................................43
Depth......................................................................................................................................................44
SECTION 9—FRONT RIGGINGS ........................................................ 45
Installing/Removing Front Riggings .......................................................................................................45
P 93, PH904A and PHAL4A...........................................................................................................45
70° and 70° Taper................................................................................................................................46
Adjusting Footrest Height ......................................................................................................................46
Model PH H93, P 93 and 70° .....................................................................................................46
70° Taper ...............................................................................................................................................47
Model PH904A and PHAL4A............................................................................................................47
Raising/Lowering Elevating Front Riggings ..........................................................................................48
Adjusting/Replacing Telescoping Front Rigging Supports................................................................48
Installing Adjustable Angle Flip-up Footplate Hinge .........................................................................50
Installing Adjustable Angle Flip-up Footplates....................................................................................50
Adjusting Adjustable Angle Flip-Up Footplates .................................................................................51
Depth Adjustment ...............................................................................................................................51
Angle Adjustment ................................................................................................................................51
Perpendicular and/or Inversion/Eversion Adjustment.................................................................51
Composite/Articulating Footplate Heel Loop Replacement ..........................................................52
Disassembly...........................................................................................................................................52
Composite.........................................................................................................................................52
Articulating........................................................................................................................................52
Installing/Removing Elevating Legrests.................................................................................................53
Installing..................................................................................................................................................53
Removing ...............................................................................................................................................53
Raising/Lowering Elevating Legrests and/or Adjusting Calfpads ....................................................54
Raising/Lowering Elevating Legrests ................................................................................................54
Adjusting Calfpads................................................................................................................................54

TABLE OF CONTENTS
Pronto® M91™ with SureStep® 6Part No. 1141450
TABLE OF CONTENTS
SECTION 1 —SHROUD/WHEELS ....................................................... 55
Replacing the Flat Free Tires on the heel Rim..............................................................................55
Removing/Installing the Shrouds ...........................................................................................................55
Removing ...............................................................................................................................................55
Installing..................................................................................................................................................56
Engaging/Disengaging Motor Release Lever .......................................................................................57
Replacing Front/Rear Caster Assemblies............................................................................................58
Adjusting Forks .........................................................................................................................................58
SECTION 11—BATTERIES ................................................................ 59
Installing/Removing the Batteries..........................................................................................................60
Installing..................................................................................................................................................60
Removing ...............................................................................................................................................62
Connecting/Disconnecting the Battery iring Harness.................................................................62
Connecting ............................................................................................................................................63
Disconnecting .......................................................................................................................................63
Charging Batteries ....................................................................................................................................64
Battery Charger Operation....................................................................................................................65
On-Board Battery Charger................................................................................................................65
Independent Charger ..........................................................................................................................66
SECTION 12—ELECTRONICS ............................................................ 68
Repositioning the Joystick.......................................................................................................................68
Disconnecting/Connecting the MK5 Joysticks...................................................................................69
Disconnecting .......................................................................................................................................69
Connecting ............................................................................................................................................69
Programming the Control Module .......................................................................................................69
GLOBAL LIMITED WARRANTY (EXCLUDING CANADA) ................... 71
CANADA LIMITED WARRANTY ...................................................... 72
REGISTER YOUR PRODUCT
The benefits of registering include:
1. Safeguarding your investment.
2. Ensuring long-term maintenance and servicing of your product.
3. Receiving updates with product information, maintenance tips and industry news.
Register ONLINE at warranty.invacare.com
Please have your model number and purchase date available to complete your registration.
Any registration information you submit will only be used by Invacare Corporation and
protected as required by applicable laws and regulations.

SPECIAL NOTES
Part No. 1141450 7Pronto® M91™ with SureStep®
SPECIAL NOTES
Signal words are used in this manual and apply to hazards or unsafe practices which
could result in personal injury or property damage. Refer to the table below for
definitions of the signal words.
NOTICE
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO
CHANGE WITHOUT NOTICE.
WHEELCHAIR USER
As a manufacturer of wheelchairs, Invacare endeavors to supply a wide variety of
wheelchairs to meet many needs of the end user. However, final selection of the
type of wheelchair to e used y an individual rests solely with the user and his/her
healthcare professional capa le of making such a selection.
WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT RESTRAINTS
As of this date, the Department of Transportation has not approved any tie-down
systems for transportation of a user while in a wheelchair, in a moving vehicle of any
type. It is Invacare’s position that users of wheelchairs should e transferred into
appropriate seating in vehicles for transportation and use e made of the restraints
made availa le y the auto industry. Invacare cannot and does not recommend any
wheelchair transportation systems.
 WARNING
Invacare products are specifically designed and manufactured for use in conjunction
with Invacare accessories. Accessories designed y other manufacturers have not
een tested y Invacare and are not recommended for use with Invacare products.
The seat positioning strap is a positioning elt only. It is not designed for use as a
safety device withstanding high stress loads such as auto or aircraft safety elts. If
signs of wear appear, elt must e replaced IMMEDIATELY.
POWERED SEATING SYSTEMS ONLY - This seating system has een custom
designed and will e assem led to the wheelchair ase efore delivery to the user.
The information contained in this manual is for maintaining and adjusting the seat-
ing system. There are very few adjustments that can safely e made y the user. If
there is a procedure or adjustment that needs to e performed on the seating sys-
tem that is not in this manual, do not perform that procedure. Have the seating sys-
tem serviced y a qualified technician.
SIGNAL ORD MEANING
DANGER Danger in icates an imminently hazar ous situation which,
if not avoi e , will result in eath or serious injury.
WARNING Warning in icates a potentially hazar ous situation which, if
not avoi e , coul result in eath or serious injury.
CAUTION Caution in icates a potentially hazar ous situation which, if
not avoi e , may result in property amage.

SPECIAL NOTES
Pronto® M91™ with SureStep® 8Part No. 1141450
 WARNING
The drive ehavior initially experienced y the user may e different from other
chairs previously used. This Power Wheelchair has Invacare’s SureStep technology,
a feature that provides the wheelchair with optimum traction and sta ility when
driving forward over transitions and thresholds of up to 3-inches. The following
warnings apply specifically to the SureStep Feature.
• DO NOT use on inclines greater than 9°.
• DO NOT use on inclines with wet, slippery, icy or oily surfaces. This may include
certain painted or otherwise treated wood surfaces.
• DO NOT traverse down ramps at high speed. Doing so will reduce traction and
increase stopping distance.
• The end user’s weight can materially affect traction on sloped surfaces. Great
care should e taken when traversing such slopes.
To determine and esta lish your particular safety limits, practice use of this product
on various sloping surfaces in the presence of a qualified healthcare provider efore
attempting active use of this wheelchair. Other general warnings listed within this
document also apply.
Wheelchairs should e examined during maintenance for signs of corrosion (water
exposure, incontinence, etc.). Electrical components damaged y corrosion should
e replaced IMMEDIATELY.
Wheelchairs that are used y incontinent users and/or are frequently exposed to
water may require replacement of electrical components more frequently.

LABEL LOCATIONS
Part No. 1141450 9Pronto® M91™ with SureStep®
LABEL LOCATIONS
M91 Standard
Serial Number Label is located
on a plate on the inside of the
right rear frame.

LABEL LOCATIONS
Pronto® M91™ with SureStep® 0 Part No. 1141450
M91 Heavy Duty
All Wheelchairs
Serial Number Label is located
on a plate on the inside of the
right rear frame.
NOTE: Auto style seat positioning
strap shown. This label is also on the
airline style seat positioning strap.

TYPICAL PRODUCT PARAMETERS
Part No. 1141450 Pronto® M91™ with SureStep®
TYPICAL PRODUCT PARAMETERS
PRON O M91
NOTE: Based on 8-inch deep Van seat.
18-INCH
VAN SEAT
20-INCH
VAN SEAT
22-INCH
VAN SEAT
SEAT WIDTH RANGE: 18 inches 20 inches 22 inches
SEAT DEPTH: 16 -18 inches 18-20 inches 20-22 inches
BACK HEIGHT W/O HEADREST
SEMI RECLINE: 18 inches 18 inches 18 inches
BACK ANGLE RANGE
SEMI RECLINE: 35° to 115° 35° to 115° 35° to 115°
UPHOLSTERY: Grey Vinyl, Grey Cloth, Tan Vinyl
SEAT-TO-FLOOR: 22½ to 23½ inches
(Cushion Not Compresse )
OVERALL WIDTH (NO JOYSTICK):
25-7/8 inches
OVERALL HEIGHT: 36-49¼ inches (Semi Recline Back)
OVERALL LENGTH: 39 inches (With Footboar Fol e )
DRIVE WHEELS/TIRES: 14 x 3-inch
CASTERS: 6 x 2-inch Front/Rear with Precision Seale Bearings
FOOTRESTS/LEGRESTS: Flip Up, Depth an Height A justable, Footboar ,
Swingaway Front Rigging, Elevating Legrest, Center Mount
WEIGHT W/SEATING SYSTEM
AND ACCESSORIES
W/O BATTERIES:
W/BATTERIES:
199 lbs
273 lbs
SHIPPING: 260 lbs (w/o Batteries), 310 lbs (w/Batteries)
ARMRESTS: A justable Angle, Depth an Wi th
BATTERIES: 22NF - Quantity 2
INCLINE CAPABILITY: 9°
PERFORMANCE
SPEED
Stan ar :
Heavy Duty:
TURNING RADIUS:
*RANGE (VARIABLE)
Stan ar :
Heavy Duty:
**WEIGHT LIMITATION
Stan ar :
Heavy Duty:
0 to 6.4 mph
0 to 4.25 mph
19½ inches (Front with Footboar ); 21½ inches (Rear)
22 miles
12-16 miles
300 lbs
400 lbs

TYPICAL PRODUCT PARAMETERS
Pronto® M91™ with SureStep® 2 Part No. 1141450
*NOTE: Values for range are calculated for maximum chair weight rating using largest batteries
applicable (22NF), per test procedures described in ANSI/RESNA WC/VOL2- 998 Section 4 and
meet federal reimbursement requirements for this product. While considered typical, they are
derived based on certain ideal conditions. Variances in battery condition, user weight, usage
pattern or overall terrain conditions will result in actual values for range that differ from these
stated values. Users should become accustomed to how their unique conditions impact their
individual results. Users should become familiar with the battery discharge indicator on the
joystick to determine the range of their wheelchair. Refer to Battery Charger Operation on page 65
for more information about the battery discharge indicator.
**NOTE: Refer to Stability and Balance on page 20.

SECTION 1—GENERAL GUIDELINES
Part No. 1141450 3 Pronto® M91™ with SureStep®
SECTION 1—GENERAL GUIDELINES
 WARNING
SECTION 1 - GENERAL GUIDELINES contains important information for the safe
operation and use of this product.
Controller Settings/Repair or Service
Set-up of the Electronic Control Unit is to be performed O LY by a qualified technician.
The final adjustments of the controller may affect other activities of the wheelchair.
Damage to the equipment could occur if improperly set-up or adjusted.
DO OT service or adjust your wheelchair while occupied, unless otherwise noted.
Wheelchairs should be examined during maintenance for signs of corrosion (water
exposure, incontinence, etc.). Electrical components damaged by corrosion should be
replaced IMMEDIATELY.
Wheelchairs that are used by incontinent users and/or are frequently exposed to water
may require replacement of electrical components more frequently.
Accessories Information
Invacare products are specifically designed and manufactured for use in conjunction with
Invacare accessories. Accessories designed by other manufacturers have not been tested
by Invacare and are not recommended for use with Invacare products.
EXTREME care should be exercised when using oxygen in close proximity to electric
circuits and other combustible materials. Contact your oxygen supplier for instruction in
the use of oxygen.
Operation Information
Performance adjustments should only be made by professionals of the healthcare field or
persons fully conversant with this process and the driver's capabilities. Incorrect settings
could cause injury to the driver, bystanders, damage to the wheelchair and to
surrounding property.
After the wheelchair has been set-up, check to make sure that the wheelchair performs to
the specifications entered during the set-up procedure. If the wheelchair does OT
perform to specifications, turn the wheelchair Off IMMEDIATELY and reenter set-up
specifications. Repeat this procedure until the wheelchair performs to specifications.
ALWAYS shift your weight in the direction you are turning. DO OT shift your weight in
the opposite direction of the turn. Shifting your weight in the opposite direction of the
turn may cause the inside drive wheel to lose traction and the wheelchair to tip over.

SECTION 1—GENERAL GUIDELINES
Pronto® M91™ with SureStep® 4 Part No. 1141450
DO OT shift your weight or sitting position toward the direction you are reaching as the
wheelchair may tip over.
DO determine and establish your particular safety limits by practicing bending, reaching
and transferring activities in the presence of a qualified healthcare professional before
attempting active use of the wheelchair.
DO OT attempt to reach objects if you have to move forward in the seat.
DO OT attempt to reach objects if you have to pick them up from the floor by reaching
down between your knees.
DO OT lean over the top of the back upholstery to reach objects behind you, as this may
cause the wheelchair to tip over.
ALWAYS keep hands and fingers clear of moving parts to avoid injury.
DO OT store items under seat - interference with seat latch may result.
DO OT use an escalator to move a wheelchair between floors. Serious bodily injury may
occur.
DO OT engage or disengage the motor release levers until the power is in the Off
position.
DO OT attempt to stop a moving wheelchair with wheel locks. Wheel locks are not
brakes.
DO OT operate on roads, streets or highways.
DO OT climb, go up or down ramps or traverse slopes greater than 9°.
EVER leave an unoccupied wheelchair on an incline.
Invacare strongly recommends proceeding down ramps or slopes at half speed or slower
and to avoid hard braking or sudden stops.
DO OT leave elevating legrests in the fully extended position when proceeding down
ramps or slopes.
DO OT attempt to move up or down an incline with a water, ice or oil film.
DO OT attempt to drive over curbs or obstacles. Doing so may cause your wheelchair
to turn over and cause bodily harm or damage to the wheelchair.
DO OT leave the power button in the On position when entering or exiting your
wheelchair.
DO OT attempt to lift the wheelchair by any removable (detachable) parts. Lifting by
means of any removable (detachable) parts of the wheelchair may result in injury to the
user or damage to the wheelchair.
DO OT stand on the frame of the wheelchair.
DO OT stand on the footplates/footboard. When getting in or out of the wheelchair,
make sure that the footboard or footplates are in the upward position or swing the
footrests towards the outside of the wheelchair.

SECTION 1—GENERAL GUIDELINES
Part No. 1141450 5 Pronto® M91™ with SureStep®
Before attempting to transfer in or out of the wheelchair, every precaution should be
taken to reduce the gap distance. Turn both casters parallel to the object you are
transferring onto. Also be certain the power is Off and wheel locks are engaged to prevent
the wheels from moving.
DO OT adjust the rear seat posts higher than the front seat posts.
Before performing any maintenance, adjustment or service verify that On/Off switch on
the joystick is in the Off position.
ALWAYS wear your seat positioning strap. The seat positioning strap is a positioning belt
only. It is not designed for use as a safety device withstanding high stress loads such as
auto or aircraft safety belts. If signs of wear appear, belt must be replaced IMMEDIATELY.
Avoid storing or using the wheelchair near open flame or combustible products. Serious
injury or damage to property may result.
Batteries
The warranty and performance specifications contained in this manual are based on the
use of deep cycle gel cell batteries. Invacare strongly recommends their use as the power
source for this unit.
Carefully read battery/battery charger information prior to installing, servicing or
operating your wheelchair.
DO OT remove fuse or mounting hardware from POSITIVE (+) RED battery cable/
mounting screw.
All battery terminal covers (two on the front battery and two on the rear battery) MUST
be installed prior to use.
The use of rubber gloves is recommended when working with batteries.
Some battery manufacturers mold a carrying strap and/or hold down flanges directly into
the battery case. Batteries that interfere with the battery box cannot be used for these
applications. Attempting to “wedge” a battery into a battery box may damage the box,
the battery and/or be a fire hazard, resulting in serious injury or further damage to
property.
Charging Batteries
 DANGER
When using an extension cord, use only a three wire extension cord having at least
16 AWG (American Wire Gauge) wire and the same or higher electrical rating as
the devise eing connected. Use of improper extension cord could result in a risk of
fire and electric shock. Three prong to two prong adapters should not e used. Use
of three prong adapters can result in improper grounding and present a shock
hazard to the user.
EVER attempt to recharge the batteries by attaching cables directly to the battery terminals.
DO OT attempt to recharge the batteries and operate the wheelchair at the same time.

SECTION 1—GENERAL GUIDELINES
Pronto® M91™ with SureStep® 6 Part No. 1141450
DO OT operate wheelchair with extension cord attached to the AC cable.
DO OT attempt to recharge the batteries when the wheelchair has been exposed to A Y
type of moisture.
DO OT attempt to recharge the batteries when the wheelchair is outside.
DO OT sit in the wheelchair while charging the batteries.
DO OT attempt to recharge batteries using BOTH the on-board battery charger and an
independent battery charger (plugged into the joystick charger port) at the SAME time.
Doing so will reduce the life of the batteries.
READ and CAREFULLY follow the manufacturer’s instructions for each charger
(supplied or purchased). If charging instructions are not supplied, consult a qualified
technician for proper procedures.
AFTER charging batteries, ALWAYS make sure that the battery charger cord is securely
wrapped and stored within the hook and loop strap assembly on the rear of the battery
tray. Failure to do so may result in damage to the cord or personal injury to the user or
bystanders.
Ensure the pins of the extension cord plug are the same number, size, and shape as those
on the charger.
DO OT under any circumstances cut or remove the round grounding plug from the
charger AC cable plug or the extension cord plug.
Grounding Instructions
DO OT, under any circumstances, cut or remove the round grounding prong from any
plug used with or for Invacare products. Some devices are equipped with three-prong
(grounding) plugs for protection against possible shock hazards and fire. Where a two-
prong wall receptacle is encountered, it is the personal responsibility and obligation of the
customer to contact a qualified electrician and have the two-prong receptacle replaced with
a properly grounded three-prong wall receptacle in accordance with the ational Electrical
Code. If you must use an extension cord, use O LY a three-wire extension cord having the
same or higher electrical rating as the device being connected. In addition, Invacare has
placed RED/ORA GE warning tags on some equipment. DO OT remove these tags.
Rain est
Invacare has tested its power wheelchairs in accordance with ISO 7176 “Rain Test.” This
provides the end user or his/her assistant sufficient time to remove his/her power
wheelchair from a rain storm and retain wheelchair operation.
DO OT leave power wheelchair in a rain storm of any kind.
DO OT use power wheelchair in a shower.
DO OT store power wheelchair in a damp area for an extended period of time.

SECTION 1—GENERAL GUIDELINES
Part No. 1141450 7 Pronto® M91™ with SureStep®
Direct exposure to excessive rain or dampness may cause the wheelchair to malfunction
electrically and mechanically, may cause the wheelchair to prematurely rust or may
damage the upholstery.
Check to ensure that the RED and BLACK battery terminal caps are secured in place,
joystick boot is OT torn or cracked where water can enter and that all electrical
connections are secure at all times.
DO OT use the wheelchair if the joystick boot is torn or cracked. If the joystick boot
becomes torn or cracked, replace IMMEDIATELY.
Weight raining
Invacare DOES OT recommend the use of its wheelchairs as a weight training
apparatus. Invacare wheelchairs have OT been designed or tested as a seat for any kind
of weight training. If occupant uses said wheelchair as a weight training apparatus,
Invacare shall OT be liable for bodily injury and the warranty is void.
Weight Limitation
The Pronto M91 wheelchairs have the following weight limitations:
MODEL EIGHT LIMITATION
STANDARD 300 lb
HEAVY DUTY 400 lb

SECTION 2—EMI INFORMATION
Pronto® M91™ with SureStep® 8 Part No. 1141450
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, oth will e referred to
as powered wheelchairs) may e suscepti le 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 rakes, move y 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 e 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 capa le 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 num er of sources of relatively intense electromagnetic fields in the
everyday environment. Some of these sources are o vious and easy to avoid.
Others are not apparent and exposure is unavoida le. However, we elieve that y
following the warnings listed elow, your risk to EMI will e minimized.
The sources of radiated EMI can e roadly classified into three types:
1) Hand-held Porta le transceivers (transmitters-receivers with the antenna
mounted directly on the transmitting unit. Examples include: citizens and (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 mo ile transceivers, such as those used in police cars, fire trucks,
am ulances and taxis. These usually have the antenna mounted on the outside of
the vehicle; and
3) Long-range transmitters and transceivers, such as commercial roadcast
transmitters (radio and TV roadcast antenna towers) and amateur (HAM)
radios.
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,
M/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.

SECTION 2—EMI INFORMATION
Part No. 1141450 9 Pronto® M91™ with SureStep®
 WARNING
Powered Wheelchair Electromagnetic Interference (EMI)
Because EM energy rapidly ecomes more intense as one moves closer to the
transmitting antenna (source), the EM fields from hand-held radio wave sources
(transceivers) are of special concern. It is possi le to unintentionally ring high
levels of EM energy very close to the powered wheelchair's control system while
using these devices. This can affect powered wheelchair movement and raking.
Therefore, the warnings listed elow are recommended to prevent possi le
interference with the control system of the powered wheelchair.
Electromagnetic interference (EMI) from sources such as radio and TV stations,
amateur radio (HAM) transmitters, two-way radios, and cellular phones can affect
powered wheelchairs and motorized scooters.
FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE
CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR
MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.
1) Do not operate hand-held transceivers (transmitters receivers), such as citizens
and (CB) radios, or turn ON personal communication devices, such as cellular
phones, while the powered wheelchair is turned ON;
2) Be aware of near y transmitters, such as radio or TV stations, and try to avoid
coming close to them;
3) If unintended movement or rake release occurs, turn the powered wheelchair
OFF as soon as it is safe;
4) Be aware that adding accessories or components, or modifying the powered
wheelchair, may make it more suscepti le to EMI (NOTE: There is no easy way
to evaluate their effect on the overall immunity of the powered wheelchair); and
5) Report all incidents of unintended movement or rake release to the powered
wheelchair manufacturer, and note whether there is a source of EMI near y.
Important Information
1) 20 volts per meter (V/m) is a generally achieva le and useful immunity level
against EMI (as of May 1994) (the higher the level, the greater the protection);
2) This device has een tested to a radiated immunity level of 20 volts per meter;
3) The immunity level of the product is unknown.
Modification of any kind to the electronics of this wheelchair as manufactured y
Invacare may adversely affect the EMI immunity levels.

SECTION 3—SAFETY/HANDLING OF HEELCHAIRS
Pronto® M91™ with SureStep® 20 Part No. 1141450
SECTION 3—SAFETY/HANDLING OF
WHEELCHAIRS
“Safety and Handling” of the wheelchair requires the close attention of the wheelchair
user as well as the assistant. This manual points out the most common procedures and
techniques involved in the safe operation and maintenance of the wheelchair. It is
important to practice and master these safe techniques until you are comfortable in
maneuvering around the frequently encountered architectural barriers.
Use this information only as a “basic” guide. The techniques that are discussed on the
following pages have been used successfully by many.
Individual wheelchair users often develop skills to deal with daily living activities that
may differ from those described in this manual. Invacare recognizes and encourages each
individual to try what works best for him/her in overcoming architectural obstacles that
they may encounter, however ALL WAR I GS and CAUTIO S given in this manual
MUST be followed. Techniques in this manual are a starting point for the new wheelchair
user and assistant with “safety” as the most important consideration for all.
Stability and Balance
 WARNING
ALWAYS wear your seat positioning strap. The seat positioning strap is a
positioning elt ONLY. It is not designed for use as a safety device withstanding high
stress loads such as auto or aircraft safety elts. If signs of wear appear, elt must e
replaced IMMEDIATELY.
DO NOT clim , go up or down ramps or traverse slopes greater than 9°.
Invacare strongly recommends proceeding down ramps or slopes at half speed or
slower and to avoid hard raking or sudden stops.
DO NOT leave elevating legrests in the fully extended position when proceeding
down ramps or slopes.
Proper positioning is essential for your safety. When reaching, leaning, ending or
ending forward, it is important to use the casters as a tool to maintain sta ility and
alance.
DO NOT attempt to reach o jects if you have to move forward in the seat or pick
them up from the floor y reaching down etween your knees.
Be aware that carrying heavy o jects on your lap while occupying the wheelchair
may adversely affect the sta ility of the wheelchair, resulting in serious odily injury
to the user, damage to the wheelchair and surrounding property.
This wheelchair has een designed to accommodate one individual. If more than
one individual occupies the wheelchair this may adversely affect the sta ility of the
wheelchair, resulting in serious odily injury to the user and passenger and damage
to the wheelchair and surrounding property.