Invacare Pronto M50 User manual

Service Manual
DEALER: Keep this manual. The
procedures in this manual MUST be
performed by a qualified technician.
For more information regarding
Invacare products, parts, and services,
please visit www.invacare.com
Pronto® Series
M50™
M51™
M61™

RECOMMENDED TOOLS
Pronto® Series 2Part No. 1125075
 WARNING
A QUALIFIED TECHNICIAN MUST PERFORM ALL PROCEDURES
IN THIS SERVICE MANUAL.
DEALERS AND QUALIFIED TECHNICIANS: DO NOT SERVICE OR
OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND
UNDERSTANDING (1) THE OWNER’S OPERATOR AND
MAINTENANCE MANUAL, (2) THE SERVICE MANUAL (IF
APPLICABLE) AND (3) THE SEATING S STEM’S MANUAL (IF
APPLICABLE). IF OU ARE UNABLE TO UNDERSTAND THE
WARNINGS, CAUTIONS AND INSTRUCTIONS, CONTACT
INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO
SERVICE OR OPERATE THIS EQUIPMENT. OTHERWISE, INJUR
OR DAMAGE MA RESULT.
RECOMMENDED TOOLS
The following tools are recommended for servicing this wheelchair:
• Invacare Power Mobility Field Service Kit - p n 1125222
• 5mm ball head 10-inch t-handle allen wrench
• Flat tip screwdriver
• ½-inch deep socket and 3 8-inch ratchet
• Small and Medium Phillips® screwdriver
• Needle nose pliers
• Wire cutters
• Tie-wrap assortment
• Dead blow hammer
• ¼-inch to ½-inch wrenches
REFERENCE DOCUMENTS
DOCUMENT PART NUMBER
M50/51/61 Owner’s Manual 1125085
MK5™NX™Electronics Manual 1110532
Quad Link Instruction Sheet (for assemblies after 4/6/06) 1134844
MK6i™Field Reference Guide 1141471
MK6i Service Manual 1143203
NOTE: Updated versions of this manual are available on www.invacare.com.

TABLE OF CONTENTS
Part No. 1125075 3Pronto® Series
TABLE OF CONTENTS
RECOMMENDED TOOLS .................................................................... 2
REFERENCE DOCUMENTS ................................................................. 2
SPECIAL NOTES ................................................................................ 8
LABEL LOCATION .......................................................................... 10
TYPICAL PRODUCT PARAMETERS .................................................. 11
SECTION 1—GENERAL GUIDELINES ................................................. 13
Controller Settings/Repair or Service ................................................................................................. 3
Operation Information............................................................................................................................ 3
Tire Pressure ............................................................................................................................................. 4
Batteries...................................................................................................................................................... 4
Charging Batteries ............................................................................................................................... 5
Grounding Instructions ........................................................................................................................... 5
Rain Test..................................................................................................................................................... 6
Weight Training ........................................................................................................................................ 6
Weight Limitation..................................................................................................................................... 6
SECTION 2—EMI INFORMATION ..................................................... 17
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING .................... 19
Safety Inspection Checklists................................................................................................................... 9
All Wheelchairs .................................................................................................................................... 9
Additional Requirements for M6 Wheelchairs...........................................................................20
Troubleshooting........................................................................................................................................20
Wheels ...................................................................................................................................................20
About Joystick Diagnostics ..........................................................................................................20
SPJ+ Information Gauge Display Diagnostics ...........................................................................2
SPJ Information Gauge Display Diagnostics ...................................................................................22
Diagnostic Codes.................................................................................................................................23
Motor/Gearbox/Brake ........................................................................................................................25
Battery ....................................................................................................................................................27
Battery Charger....................................................................................................................................28
M6 Only ...............................................................................................................................................29
Checking Battery Charge Level.............................................................................................................29
Field Load Test..........................................................................................................................................30
Motor Testing............................................................................................................................................3
SECTION 4— HEELCHAIR OPERATION ........................................... 32
Turning the Power On/Off.....................................................................................................................32
M50 and M5 Wheelchairs Manufactured Before 8/ 5/05 ........................................................32
M50/M5 Wheelchairs Manufactured After 8/ 4/05 and all M6 Wheelchairs....................33
Using the Joystick to Drive the Wheelchair ......................................................................................33
Adjusting the Speed .................................................................................................................................35
M50 and M5 Wheelchairs Manufactured Before 8/ 5/05 ........................................................35
M50/M5 Wheelchairs Manufactured After 8/ 4/05 and All M6 Wheelchairs...................35
Using the Horn..........................................................................................................................................36
M50 and M5 Wheelchairs Manufactured Before 8/ 5/05 ........................................................36

TABLE OF CONTENTS
Pronto® Series 4Part No. 1125075
TABLE OF CONTENTS
M50/M5 Wheelchairs Manufactured After 8/ 4/05 and All M6 Wheelchairs...................37
Elevating the Seat......................................................................................................................................37
SPJ™Joystick Switches and Indicators .................................................................................................39
On/Off Toggle Switch .........................................................................................................................39
Speed Control Knob ...........................................................................................................................39
Joystick....................................................................................................................................................39
Charger/Programming Input..............................................................................................................39
Information Gauge Display ................................................................................................................40
SPJ+ and SPJ+ w/ACC Joystick Switches and Indicators .................................................................4
On/Off Button ......................................................................................................................................42
Speedometer.........................................................................................................................................42
Speed Control Buttons.......................................................................................................................42
Mode Button .........................................................................................................................................42
Joystick....................................................................................................................................................43
Charger/Programming Input..............................................................................................................43
Service Indicator...................................................................................................................................43
Information Gauge Display ................................................................................................................43
SECTION 5—ARMS ......................................................................... 44
Removing/Installing Van Seat Arm........................................................................................................44
Adjusting Van Seat Arm Width.............................................................................................................44
Adjusting Van Seat Arm Angle ..............................................................................................................45
Adjusting Van Seat Arm Height (Adjustable Height Arms Only)..................................................45
Replacing Van Seat Armrest Assembly................................................................................................46
Removing/Installing Flip Back Armrest ................................................................................................47
Adjusting the Flip Back Armrest Height..............................................................................................48
SECTION 6—VAN SEAT ................................................................... 49
Adjusting the Back Angle ........................................................................................................................49
Semi-Recline Back Angle ....................................................................................................................49
Fold Down Back Angle .......................................................................................................................49
Adjusting the Headrest (Semi-Recline Only) .....................................................................................50
Removing/Installing the Seat Assembly................................................................................................50
Removing ...............................................................................................................................................50
Installing..................................................................................................................................................50
Adjusting Seat Depth ...............................................................................................................................5
Adjusting the Seat Height .......................................................................................................................53
M50/M5 Wheelchairs........................................................................................................................53
M6 Wheelchairs .................................................................................................................................54
Adjusting Seat Position on Seat Base...................................................................................................56
Replacing the Seat Positioning Strap ....................................................................................................58
SECTION 7—ASBA SEAT ................................................................. 59
Removing/Installing the Seat Assembly................................................................................................59
Removing ..........................................................................................................................................59
Installing ............................................................................................................................................59
Adjusting the Seat Height .......................................................................................................................60
M50/5 Wheelchairs Only.................................................................................................................60

TABLE OF CONTENTS
Part No. 1125075 5Pronto® Series
TABLE OF CONTENTS
M6 Wheelchairs .................................................................................................................................62
Removing/Installing the Seat Pan...........................................................................................................63
Adjusting the Seat Width........................................................................................................................64
Removing/Installing the Seat Frame......................................................................................................64
Removing ...............................................................................................................................................64
Installing..................................................................................................................................................64
Adjusting the Seat Position.....................................................................................................................65
Removing/Installing the Seat Positioning Strap ..................................................................................66
Removing/Installing the Back Upholstery............................................................................................67
Removing/Installing/Changing the Back Cane Height.......................................................................67
Removing ..........................................................................................................................................67
Installing ............................................................................................................................................68
Adjusting the Back Angle ........................................................................................................................7
SECTION 8—FRONT RIGGINGS/FOOTBOARD .................................... 73
Installing/Removing Front Riggings .......................................................................................................73
Installing..................................................................................................................................................73
Removing ...............................................................................................................................................74
Adjusting Footrest Height ......................................................................................................................74
Model PHWH93 Front Riggings .......................................................................................................74
Model PH904A and PHAL4A Front Riggings ................................................................................75
Replacing Heel Loops ..............................................................................................................................75
Raising/Lowering Elevating Front Riggings ..........................................................................................76
Adjusting/Replacing Telescoping Front Rigging Supports................................................................76
Van Seats................................................................................................................................................76
ASBA Seat..............................................................................................................................................77
Removing/Installing the Footboard Assembly....................................................................................78
Removing ...............................................................................................................................................78
Installing..................................................................................................................................................79
Adjusting the Footboard Assembly ......................................................................................................79
Angle .......................................................................................................................................................79
Depth......................................................................................................................................................80
SECTION 9— HEELS ....................................................................... 81
Replacing the Front/Rear Casters.........................................................................................................8
Adjusting Caster Assembly.....................................................................................................................82
Removing/Installing the Front/Rear Caster Assemblies...................................................................83
Removing ...............................................................................................................................................83
Installing..................................................................................................................................................83
Removing/Installing the Front Headtube Assembly..........................................................................83
Removing/Installing the Drive Wheel ..................................................................................................84
Removing the Drive Wheel...............................................................................................................84
Installing the Drive Wheel .................................................................................................................84
Replacing the 2-Piece Wheel Rim and/or the Foam Filled or Pneumatic Tires.........................85
SECTION 10—SHROUDS AND FRAME .............................................. 87
Removing/Installing the Top Shroud ....................................................................................................87
Removing ...............................................................................................................................................87

TABLE OF CONTENTS
Pronto® Series 6Part No. 1125075
TABLE OF CONTENTS
Installing..................................................................................................................................................87
Removing/Installing the Side Shrouds ..................................................................................................88
Removing ...............................................................................................................................................88
Installing..................................................................................................................................................88
Removing/Installing the Front Shroud .................................................................................................89
Removing ...............................................................................................................................................89
Installing..................................................................................................................................................89
Removing/Installing the Inner Shrouds ................................................................................................90
Removing ...............................................................................................................................................90
Installing..................................................................................................................................................90
Removing/Installing the Pivot Tube ......................................................................................................9
Removing ...............................................................................................................................................9
Installing..................................................................................................................................................92
Removing/Installing the SureStep Spring .............................................................................................93
Removing ...............................................................................................................................................93
Installing..................................................................................................................................................93
Removing/Installing the Walking Beam................................................................................................93
Removing ...............................................................................................................................................93
Installing..................................................................................................................................................93
Removing/Installing the Elevate Actuator ...........................................................................................94
Removing ...............................................................................................................................................94
Installing..................................................................................................................................................95
Removing/Installing the Actuator Switch Sensor ..............................................................................97
Removing ...............................................................................................................................................97
Installing..................................................................................................................................................97
SECTION 11—BATTERIES ................................................................ 98
Warnings For Handling and Replacing Batteries ...............................................................................98
Using the Proper Batteries.....................................................................................................................99
Removing/Installing Batteries from/into Battery Tray......................................................................99
Removing ............................................................................................................................................ 00
Installing............................................................................................................................................... 00
Connecting/Disconnecting Battery Cables...................................................................................... 0
Connecting Battery Cables............................................................................................................. 0
Disconnecting Battery Cables........................................................................................................ 04
Charging Batteries................................................................................................................................. 04
Battery Charger Operation................................................................................................................. 05
On-Board Battery Charger............................................................................................................. 06
Charging Using An Independent Charger Plugged Into The Joystick ................................... 07
Replacing the On-Board Battery Charger Fuse.............................................................................. 08
Replacing the On-Board Battery Charger ....................................................................................... 09
SECTION 12—MOTORS .................................................................. 112
Removing/Installing the Motor ........................................................................................................... 2
Engaging/Disengaging Motor Release Lever .................................................................................... 4
Removing/Installing the Motor Release Lever ................................................................................ 5
Replacing Motor Brushes..................................................................................................................... 6
Electro-Mechanical Parking Brake Testing....................................................................................... 8

TABLE OF CONTENTS
Part No. 1125075 7Pronto® Series
TABLE OF CONTENTS
SECTION 13—ELECTRONICS .......................................................... 120
Removing/Installing the Joystick ......................................................................................................... 20
Removing ............................................................................................................................................ 20
Installing............................................................................................................................................... 20
Repositioning the Joystick Mounting Bracket ................................................................................. 2
Van Seat............................................................................................................................................... 2
ASBA Seat........................................................................................................................................... 22
Disconnecting/Connecting the Joystick............................................................................................ 23
Disconnecting .................................................................................................................................... 23
Connecting ......................................................................................................................................... 23
Adjusting the Quad-Link Retractable Mount .................................................................................. 24
Adjusting Lock/Release Tension.................................................................................................... 24
Replacing the Controller ..................................................................................................................... 25
Wire Routing.......................................................................................................................................... 27
SECTION 14—ACCESSORIES .......................................................... 128
Installing/Removing the Crutch/Cane Holder................................................................................. 28
Installing............................................................................................................................................... 28
Installing/Removing the Oxygen Holder .......................................................................................... 29
Installing/Removing/Using the Walker Holder ............................................................................... 30
Installing/Removing the Walker Holder ...................................................................................... 30
Using the Walker Holder................................................................................................................ 30
LIMITED ARRANTY ................................................................... 131

SPECIAL NOTES
Pronto® Series 8Part No. 1125075
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 f wheelchairs, Invacare endeav rs t supply a wide variety f
wheelchairs t meet many needs f the end user. H wever, final selecti n f the
type f wheelchair t be used by an individual rests s lely with the user and his/her
healthcare pr fessi nal capable f making such a selecti n.
WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT RESTRAINTS
Wheelchair users sh uld n t be transp rted in vehicles f any kind while in
wheelchairs. As f this date, the Department f Transp rtati n has n t appr ved
any tie-d wn systems f r transp rtati n f a user while in a wheelchair, in a m ving
vehicle f any type.
It is Invacare’s p siti n that users f wheelchairs sh uld be transferred int
appr priate seating in vehicles f r transp rtati n and use be made f the restraints
made available by the aut industry. Invacare cann t and d es n t rec mmend any
wheelchair transp rtati n systems.
 WARNING
ALWAYS wear y ur seat p siti ning strap. The seat p siti ning strap is a
p siti ning belt nly. It is n t designed f r use as a safety device withstanding high
stress l ads such as aut r aircraft safety belts. If signs f wear appear, the belt
MUST be replaced IMMEDIATELY.
Invacare pr ducts are specifically designed and manufactured f r use in c njuncti n
with Invacare access ries. Access ries designed by ther manufacturers have n t
been tested by Invacare and are n t rec mmended f r use with Invacare pr ducts.
SIGNAL WORD MEANING
DANGER Danger indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING Warning indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
CAUTION Caution indicates a potentially hazardous situation which, if
not avoided, may result in property damage.

SPECIAL NOTES
Part No. 1125075 9Pronto® Series
 WARNING CONTINUED
The drive behavi r initially experienced by the user may be different fr m ther
chairs previ usly used. This p wer wheelchair has Invacare’s SureStep® techn l gy,
a feature that pr vides the chair with ptimum tracti n and stability when driving
f rward ver transiti ns and thresh lds f up t 2-inches.
The f ll wing warnings apply specifically t the SureStep Feature.
• DO NOT use n inclines greater than 9°.
• DO NOT use n inclines with wet, slippery, icy r ily surfaces. This may include
certain painted r therwise treated w d surfaces.
• DO NOT traverse d wn ramps at high speed. D ing s will reduce tracti n and
increase st pping distance.
• The end user’s weight can materially affect tracti n n sl ped surfaces. Great
care sh uld be taken when traversing such sl pes.
T determine and establish y ur particular safety limits, practice use f this pr duct
n vari us sl ping surfaces in the presence f a qualified healthcare pr vider bef re
attempting active use f this wheelchair. Other general warnings listed within this
d cument als apply.
Wheelchairs sh uld be examined during maintenance f r signs f c rr si n (water
exp sure, inc ntinence, etc.). Electrical c mp nents damaged by c rr si n sh uld
be replaced IMMEDIATELY.
Wheelchairs that are used by inc ntinent users and/ r are frequently exp sed t
water may require replacement f electrical c mp nents m re frequently.

LABEL LOCATION
Pronto® Series 0 Part No. 1125075
LABEL LOCATION
The serial number label is located inside of the front frame. The top shroud and front
battery need to be removed to view the label.
M50/M51 Wheelchairs
M61 Wheelchairs

TYPICAL PRODUCT PARAMETERS
Part No. 1125075 Pronto® Series
TYPICAL PRODUCT PARAMETERS
MEDIUM
BACK
SEMI-RECLINE
BACK
OFFICE STYLE,
SEMI-RECLINE
BACK
ASBA
SEAT WIDTH RANGE: 18 inches 16
inches
18
inches
20
inches
18 inches 16 20 inches
SEAT DEPTH: 16 18
inches
16 18 inches 18 20
inches
16 18 inches 16 20 inches
BACK HEIGHT: 16½ inches 19 inches 23½ inches
(w/ headrest)
18¾ inches
(w/o headrest)
16 20 inches
BACK ANG E RANGE: 95° to 100°
in 5°
increments
90 to 114° 90 to 115° 80° to 100°
in 5° increments
UPHO STERY: Light Grey
Vinyl
Light Grey Vinyl, Grey
Cloth, Tan Vinyl
Charcoal Grey Vinyl Black Nylon
Back with Seat
Pan
SEAT-TO-F OOR
WITH FOOTBOARD
(M50/M51):
WITH FRONT RIGGINGS
(M50/M51):
WITH ELEVATING SEAT
(M61):
20 to 24 inches
22 to 24 inches
21 23 inches + up to 5 inches of Elevate
19 to 23 inches
19 23 inches
19 to 21 inches + up
to 5 inches of
Elevate
17 21 inches
19 21 inches
17 to 19 inches
+ up to 5 inches
of Elevate
OVERA WIDTH: 24 inches (Without Joystick)
OVERA HEIGHT: 35 to 43¾ inches 41½ inches
OVERA ENGTH: 34 inches (With Footboard Folded)
39½ inches (With Footboard Extended)
DRIVE WHEE S/
TIRES: 10 x 3 inch (Flat Free inserts)
CASTER: 6 x 2 inch Front/Rear w/Precision Sealed Bearings
FOOTRESTS/
EGRESTS:
Flip Up, Depth and Height Adjustable, Footboard,
Swingaway Front Rigging, Elevating Legrest
*WEIGHT
W/O BATTERIES:
W/BATTERIES (U1):
145 to 170 lbs
192 to 217 lbs
SHIPPING
BASE W/O BATTERIES:
BASE WITH BATTERIES:
MEDIUM BACK:
SEMI RECLINE:
OFFICE STYLE:
ASBA (20 X 20 X 20):
107 lbs
154 lbs
40 lbs
64 lbs
44 lbs
48 lbs

TYPICAL PRODUCT PARAMETERS
Pronto® Series 2 Part No. 1125075
*NOTE: Includes seating systems and accessories.
**NOTE: alues for range are calculated for maximum chair weight rating using largest batteries
applicable (U1), per test procedures described in ANSI/RESNA WC/ OL2-1998 Section 4 and
meet federal reimbursement requirements for this product. While considered typical, they are
derived based on certain ideal conditions. ariances 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 105
for more information about the battery discharge indicator.
ARMRESTS: Adjustable Width, Angle, Heights and Depth
BATTERIES: U1 Quantity 2
WEIGHT IMITATION: 300 lbs
PERFORMANCE
SPEED:
TURNING RADIUS:
**RANGE (VARIABLE):
0 to 4.3 m.p.h.
19½ inches
up to 12 miles
MEDIUM
BACK
SEMI-RECLINE
BACK
OFFICE STYLE,
SEMI-RECLINE
BACK
ASBA

SECTION —GENERAL GUIDELINES
Part No. 1125075 3 Pronto® Series
SECTION 1—GENERAL GUIDELINES
 WARNING
SECTION 1 - GENERAL GUIDELINES c ntains imp rtant inf rmati n f r the safe
perati n and use f this pr duct. DO NOT use this pr duct r any available
pti nal equipment with ut first c mpletely reading and understanding these
instructi ns and any additi nal instructi nal material such as Owner’s Manuals,
Service Manuals r Instructi n Sheets supplied with this pr duct r pti nal
equipment. If y u are unable t understand the Warnings, Cauti ns r Instructi ns,
c ntact a healthcare pr fessi nal, dealer r technical pers nnel bef re attempting
t use this equipment - therwise, injury r damage may ccur.
Controller Settings/Repair or Service
Set-up of the Electronic Control Unit is to be performed only 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.
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.
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 chair 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 not
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 NOT 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.
DO NOT shift your weight or sitting position toward the direction you are reaching as the
wheelchair may tip over.
DO NOT engage or disengage the motor release levers until the power is in the Off
position.
DO NOT operate on roads, streets or highways.

SECTION —GENERAL GUIDELINES
Pronto® Series 4 Part No. 1125075
DO NOT climb, go up or down ramps or traverse slopes greater than 9°.
DO NOT attempt to move up or down an incline with a water, ice or oil film.
DO NOT attempt to drive over curbs or obstacles. Doing so may cause your wheelchair
to turn over and cause bodily harm or damage to the chair.
DO NOT leave the power button in the On position when entering or exiting your
wheelchair.
DO NOT stand on the frame of the wheelchair.
DO NOT stand on the flip-up footboard, otherwise damage may occur. When getting in
or out of the wheelchair, make sure that the flip-up footboard is in the upward 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.
Before performing any maintenance, adjustment or service verify that On Off switch on
the joystick is in the Off position.
Avoid storing or using the wheelchair near open flame or combustible products. Serious
injury or damage to property may result.
ALWAYS keep hands and fingers clear of moving parts to avoid injury.
NEVER leave an unoccupied wheelchair on an incline.
DO NOT 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.
Make sure the detent balls of the quick-release pin are fully released beyond the outer
edge of the tube before operating the wheelchair. Otherwise, injury and or damage may
result.
Keep detent balls clean.
Tire Pressure
DO NOT release wheelchair from service unless it has the proper tire pressure (P.S.I.). DO
NOT overinflate the tires. Failure to follow these recommendations may cause the tire to
explode and cause bodily harm. The recommended tire pressure is listed on the side wall
of the tire.
Batteries
The warranty and performance specifications contained in this manual are based on the
use of deep cycle gel cell or sealed lead acid batteries. Invacare strongly recommends their
use as the power source for this unit.

SECTION —GENERAL GUIDELINES
Part No. 1125075 5 Pronto® Series
Carefully read battery battery charger information prior to installing, servicing or
operating your wheelchair.
Charging Batteries
 DANGER
When using an extensi n c rd, use nly a three wire extensi n c rd having at least
16 AWG (American Wire Gauge) wire and the same r higher electrical rating as
the device being c nnected. Use f impr per extensi n c rd c uld result in risk f
fire and electric sh ck. Three pr ng t tw pr ng adapters sh uld n t be used. Use
f three pr ng adapters can result in impr per gr unding and present a sh ck
hazard t the user.
NEVER attempt to recharge the batteries by attaching cables directly to the battery
terminals.
DO NOT attempt to recharge the batteries and operate the wheelchair at the same time.
DO NOT operate wheelchair with extension cord attached to the AC cable.
DO NOT attempt to recharge the batteries when the wheelchair has been exposed to any
type of moisture.
DO NOT attempt to recharge the batteries when the wheelchair is outside.
DO NOT sit in the wheelchair while charging the batteries.
DO NOT 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.
Ensure the pins of the extension cord plug are the same number, size, and shape as those
on the charger.
DO NOT under any circumstances cut or remove the round grounding plug from the
charger AC cable plug or the extension cord plug.
Grounding Instructions
DO NOT, 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 National Electrical
Code. If you must use an extension cord, use only a three-wire extension cord having the
same or higher electrical rating as the device being connected. In addition, Invacare has
placed RED ORANGE warning tags on some equipment. DO NOT remove these tags.

SECTION —GENERAL GUIDELINES
Pronto® Series 6 Part No. 1125075
Rain Test
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 NOT leave power wheelchair in a rain storm of any kind.
DO NOT use power wheelchair in a shower.
DO NOT store power wheelchair in a damp area for an extended period of time.
Direct exposure to excessive rain or dampness may cause the chair to malfunction
electrically and mechanically, may cause the chair to prematurely rust and or may
damage the upholstery.
Check to ensure that the RED and GREY battery terminal caps are secured in place,
joystick boot is not torn or cracked where water can enter and that all electrical
connections are secure at all times.
DO NOT use the wheelchair if the joystick boot is torn or cracked. If the joystick boot
becomes torn or cracked, replace IMMEDIATELY.
Weight Training
Invacare does not recommend the use of its wheelchairs as a weight training apparatus.
Invacare wheelchairs have not 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
not be liable for bodily injury and the warranty is void.
Weight imitation
The M50, M51 and M61 wheelchairs with SureStep have a weight limitation of 300 lbs.

SECTION 2—EMI INFORMATION
Part No. 1125075 7 Pronto® Series
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.
Electr magnetic Interference (EMI) Fr m Radi Wave S urces
P wered wheelchairs and m t rized sc ters (in this text, b th will be referred t
as p wered wheelchairs) may be susceptible t electr magnetic interference (EMI),
which is interfering electr magnetic energy (EM) emitted fr m s urces such as
radi stati ns, TV stati ns, amateur radi (HAM) transmitters, tw way radi s, and
cellular ph nes. The interference (fr m radi wave s urces) can cause the p wered
wheelchair t release its brakes, m ve by itself, r m ve in unintended directi ns. It
can als permanently damage the p wered wheelchair's c ntr l system. The
intensity f the interfering EM energy can be measured in v lts per meter (V/m).
Each p wered wheelchair can resist EMI up t a certain intensity. This is called its
"immunity level." The higher the immunity level, the greater the pr tecti n. At this
time, current techn l gy is capable f achieving at least a 20 V/m immunity level,
which w uld pr vide useful pr tecti n fr m the m re c mm n s urces f radiated
EMI.
There are a number f s urces f relatively intense electr magnetic fields in the
everyday envir nment. S me f these s urces are bvi us and easy t av id.
Others are n t apparent and exp sure is unav idable. H wever, we believe that by
f ll wing the warnings listed bel w, y ur risk t EMI will be minimized.
The s urces f radiated EMI can be br adly classified int three types:
1) Hand-held P rtable transceivers (transmitters-receivers with the antenna
m unted directly n the transmitting unit. Examples include: citizens band (CB)
radi s, "walkie talkie", security, fire and p lice transceivers, cellular teleph nes,
and ther pers nal c mmunicati n devices).
NOTE: Some cellular telephones and similar devices transmit signals while they are ON,
even when not being used.
2) Medium-range m bile transceivers, such as th se used in p lice cars, fire trucks,
ambulances and taxis. These usually have the antenna m unted n the utside f
the vehicle; and
3) L ng-range transmitters and transceivers, such as c mmercial br adcast
transmitters (radi and TV br adcast antenna t wers) and amateur (HAM)
radi s.
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
Pronto® Series 8 Part No. 1125075
 WARNING
P wered Wheelchair Electr magnetic Interference (EMI)
Because EM energy rapidly bec mes m re intense as ne m ves cl ser t the
transmitting antenna (s urce), the EM fields fr m hand-held radi wave s urces
(transceivers) are f special c ncern. It is p ssible t unintenti nally bring high
levels f EM energy very cl se t the p wered wheelchair's c ntr l system while
using these devices. This can affect p wered wheelchair m vement and braking.
Theref re, the warnings listed bel w are rec mmended t prevent p ssible
interference with the c ntr l system f the p wered wheelchair.
Electr magnetic interference (EMI) fr m s urces such as radi and TV stati ns,
amateur radi (HAM) transmitters, tw -way radi s, and cellular ph nes can affect
p wered wheelchairs and m t rized sc ters.
FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE
CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR
MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.
1) D n t perate hand-held transceivers (transmitters receivers), such as citizens
band (CB) radi s, r turn ON pers nal c mmunicati n devices, such as cellular
ph nes, while the p wered wheelchair is turned ON;
2) Be aware f nearby transmitters, such as radi r TV stati ns, and try t av id
c ming cl se t them;
3) If unintended m vement r brake release ccurs, turn the p wered wheelchair
OFF as s n as it is safe;
4) Be aware that adding access ries r c mp nents, r m difying the p wered
wheelchair, may make it m re susceptible t EMI (NOTE: There is n easy way
t evaluate their effect n the verall immunity f the p wered wheelchair); and
5) Rep rt all incidents f unintended m vement r brake release t the p wered
wheelchair manufacturer, and n te whether there is a s urce f EMI nearby.
Imp rtant Inf rmati n
1) 20 v lts per meter (V/m) is a generally achievable and useful immunity level
against EMI (as f May 1994) (the higher the level, the greater the pr tecti n);
2) This device has been tested t a radiated immunity level f 20 v lts per meter.
3) The immunity level f the pr duct is unkn wn.
M dificati n f any kind t the electr nics f this wheelchair as manufactured by
Invacare may adversely affect the EMI immunity levels.

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Part No. 1125075 9 Pronto® Series
SECTION 3—SAFETY
INSPECTION/TROUBLESHOOTING
Safety Inspection Checklists
Initial adjustments should be made to suit the end user’s personal body structure,
needs, and preferences. After initial setup, perform these procedures every time the
product is serviced.
All Wheelchairs
CAUTION
As with any vehicle, the wheels and tires sh uld be checked peri dically f r cracks
and wear, and sh uld be replaced.
❑Ensure that the wheelchair rolls straight (no excessive drag or pull to one side).
❑Ensure that the arms are secure but easy to release and adjustment levers engage
properly.
❑Ensure that adjustable height arms operate and lock securely.
❑Ensure armrest pads sit flush against arm.
❑Ensure seat is secured to wheelchair frame.
❑Ensure seat release latch is functional. Replace if necessary.
❑Clean upholstery and armrests.
❑Ensure no excessive side movement or binding occurs when drive wheels are lifted
and spun when disengaged (freewheeling).
❑Inspect caster assembly has proper tension when caster is spun. Caster should come
to a gradual stop.
❑Loosen tighten caster locknut if wheel wobbles noticeably or binds to a stop.
❑Ensure casters are free of debris.
❑Ensure all caster wheel fork headtube fasteners are secure.
❑Inspect tires for flat spots and wear.
❑Ensure all fasteners on clothing guards are secure.
❑Seat and or back upholstery have no rips and do not sag. Replace if necessary.
❑Inspect seat positioning strap for any signs of wear. Ensure buckle latches. Verify
hardware that attaches strap to frame is secure and undamaged. Replace if necessary.
❑Ensure wheel mounting nuts are secure on drive wheels.
❑Check pneumatic tires for proper inflation.
❑Inspect motor brushes and gearbox coupling.

SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Pronto® Series 20 Part No. 1125075
❑Ensure seat is secured to wheelchair frame.
❑Ensure seat release latch is not worn and is functional. Replace if necessary.
❑Ensure arm pivot points are not worn and or loose. Replace if necessary.
❑Inspect for any loose hardware on the wheelchair.
❑Inspect charger AC power cord for damage. Replace if necessary.
❑Check that all labels are present and legible. Replace if necessary.
❑Inspect electrical components for signs of corrosion. Replace if corroded or damaged.
Additional Requirements for M61 Wheelchairs
❑Make sure elevate operates smoothly and properly.
❑Make sure elevate systems drive with reduced speed when seat is in elevated position.
Troubleshooting
NOTE: For additional troubleshooting information and explanation of error codes, refer to the
individual electronics manual supplied with each wheelchair.
Wheels
Ab ut J ystick Diagn stics
The joystick information gauge and the service indicator give indications of the type of
fault or error detected by the control module. When a fault is detected, the wheelchair
may stop and not drive. The LEDs on the information gauge may flash in a particular
pattern or the service indicator light will flash. The number or type of flashes indicates the
nature of the error. If multiple errors are found, only the first error encountered by the
control module will be displayed.
WHEELCHAIR VEERS
LEFT/RIGHT
SLUGGISH TURN/
PERFORMANCE
CASTERS
FLUTTER
SQUEAKS AND
RATTLES
LOOSENESS
IN WHEELCHAIR
WHEELCHAIR 3
WHEELS
SOLUTIONS
X X X If pneumatic, check tires for correct and equal pressure.
X X X X Check for loose stem nuts/bolts.
X X Check that casters contact ground at the same time.