Invacare M50, M61, M51 User Manual
Service Manual
Pronto® Series
™
M50
M51
M61
™
™
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
RECOMMENDED TOOLS
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 SYSTEM’S MANUAL (IF
APPLICABLE). IF YOU ARE UNABLE TO UNDERSTAND THE
WARNINGS, CAUTIONS AND INSTRUCTIONS, CONTACT
INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO
SERVICE OR OPERATE THIS EQUIPMENT. OTHERWISE, INJURY
OR DAMAGE MAY 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.
Pronto® Series 2 Part No. 1125075
TABLE OF CONTENTS
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 .................................................................................................13
Operation Information............................................................................................................................13
Tire Pressure .............................................................................................................................................14
Batteries......................................................................................................................................................14
Charging Batteries ...............................................................................................................................15
Grounding Instructions ...........................................................................................................................15
Rain Test.....................................................................................................................................................16
Weight Training ........................................................................................................................................16
Weight Limitation.....................................................................................................................................16
SECTION 2—EMI INFORMATION ..................................................... 17
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING .................... 19
Safety Inspection Checklists...................................................................................................................19
All Wheelchairs ....................................................................................................................................19
Additional Requirements for M61 Wheelchairs...........................................................................20
Troubleshooting........................................................................................................................................20
Wheels ...................................................................................................................................................20
About Joystick Diagnostics ..........................................................................................................20
SPJ+ Information Gauge Display Diagnostics ...........................................................................21
SPJ Information Gauge Display Diagnostics ...................................................................................22
Diagnostic Codes.................................................................................................................................23
Motor/Gearbox/Brake ........................................................................................................................25
Battery ....................................................................................................................................................27
Battery Charger....................................................................................................................................28
M61 Only ...............................................................................................................................................29
Checking Battery Charge Level.............................................................................................................29
Field Load Test..........................................................................................................................................30
Motor Testing............................................................................................................................................31
SECTION 4—WHEELCHAIR OPERATION ........................................... 32
Turning the Power On/Off.....................................................................................................................32
M50 and M51 Wheelchairs Manufactured Before 8/15/05 ........................................................32
M50/M51 Wheelchairs Manufactured After 8/14/05 and all M61 Wheelchairs....................33
Using the Joystick to Drive the Wheelchair ......................................................................................33
Adjusting the Speed .................................................................................................................................35
M50 and M51 Wheelchairs Manufactured Before 8/15/05 ........................................................35
M50/M51 Wheelchairs Manufactured After 8/14/05 and All M61 Wheelchairs...................35
Using the Horn..........................................................................................................................................36
M50 and M51 Wheelchairs Manufactured Before 8/15/05 ........................................................36
Part No. 1125075 3 Pronto® Series
TABLE OF CONTENTS
TABLE OF CONTENTS
M50/M51 Wheelchairs Manufactured After 8/14/05 and All M61 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 .................................................................41
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 ...............................................................................................................................51
Adjusting the Seat Height .......................................................................................................................53
M50/M51 Wheelchairs........................................................................................................................53
M61 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
M50/51 Wheelchairs Only.................................................................................................................60
Pronto® Series 4 Part No. 1125075
TABLE OF CONTENTS
TABLE OF CONTENTS
M61 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 ........................................................................................................................71
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—WHEELS ....................................................................... 81
Replacing the Front/Rear Casters.........................................................................................................81
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
Part No. 1125075 5 Pronto® Series
TABLE OF CONTENTS
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 ......................................................................................................91
Removing ...............................................................................................................................................91
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 ............................................................................................................................................ 100
Installing............................................................................................................................................... 100
Connecting/Disconnecting Battery Cables...................................................................................... 101
Connecting Battery Cables............................................................................................................. 101
Disconnecting Battery Cables........................................................................................................ 104
Charging Batteries................................................................................................................................. 104
Battery Charger Operation................................................................................................................. 105
On-Board Battery Charger............................................................................................................. 106
Charging Using An Independent Charger Plugged Into The Joystick ................................... 107
Replacing the On-Board Battery Charger Fuse.............................................................................. 108
Replacing the On-Board Battery Charger ....................................................................................... 109
SECTION 12—MOTORS .................................................................. 112
Removing/Installing the Motor ........................................................................................................... 112
Engaging/Disengaging Motor Release Lever .................................................................................... 114
Removing/Installing the Motor Release Lever ................................................................................ 115
Replacing Motor Brushes..................................................................................................................... 116
Electro-Mechanical Parking Brake Testing....................................................................................... 118
Pronto® Series 6 Part No. 1125075
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTION 13—ELECTRONICS .......................................................... 120
Removing/Installing the Joystick ......................................................................................................... 120
Removing ............................................................................................................................................ 120
Installing............................................................................................................................................... 120
Repositioning the Joystick Mounting Bracket ................................................................................. 121
Van Seat............................................................................................................................................... 121
ASBA Seat........................................................................................................................................... 122
Disconnecting/Connecting the Joystick............................................................................................ 123
Disconnecting .................................................................................................................................... 123
Connecting ......................................................................................................................................... 123
Adjusting the Quad-Link Retractable Mount .................................................................................. 124
Adjusting Lock/Release Tension.................................................................................................... 124
Replacing the Controller ..................................................................................................................... 125
Wire Routing.......................................................................................................................................... 127
SECTION 14—ACCESSORIES .......................................................... 128
Installing/Removing the Crutch/Cane Holder................................................................................. 128
Installing............................................................................................................................................... 128
Installing/Removing the Oxygen Holder .......................................................................................... 129
Installing/Removing/Using the Walker Holder ...............................................................................130
Installing/Removing the Walker Holder ...................................................................................... 130
Using the Walker Holder................................................................................................................ 130
LIMITED WARRANTY ................................................................... 131
Part No. 1125075 7 Pronto® Series
SPECIAL NOTES
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.
SIGNAL WORD MEANING
DANGER
WARNING
CAUTION
Danger indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
Warning indicates a potentially hazardous situation which, if
not avoided, could result in death or serious injury.
Caution indicates a potentially hazardous situation which, if
not avoided, may result in property damage.
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 be used by an individual rests solely with the user and his/her
healthcare professional capable of making such a selection.
WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT RESTRAINTS
Wheelchair users should not be transported in vehicles of any kind while in
wheelchairs. 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 be transferred into
appropriate seating in vehicles for transportation and use be made of the restraints
made available by the auto industry. Invacare cannot and does not recommend any
wheelchair transportation systems.
WARNING
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, the belt
MUST be replaced IMMEDIATELY.
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.
Pronto® Series 8 Part No. 1125075
SPECIAL NOTES
WARNING CONTINUED
The drive behavior initially experienced by the user may be different from other
chairs previously used. This power wheelchair has Invacare’s SureStep® technology,
a feature that provides the chair with optimum traction and stability when driving
forward over transitions and thresholds of up to 2-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 be taken when traversing such slopes.
To determine and establish your particular safety limits, practice use of this product
on various sloping surfaces in the presence of a qualified healthcare provider before
attempting active use of this wheelchair. Other general warnings listed within this
document also apply.
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.
Part No. 1125075 9 Pronto® Series
LABEL LOCATION
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
Pronto® Series 10 Part No. 1125075
TYPICAL PRODUCT PARAMETERS
TYPICAL PRODUCT PARAMETERS
MEDIUM
BACK
SEMI-RECLINE
BACK
OFFICE STYLE,
SEMI-RECLINE
BACK
SEAT WIDTH RANGE: 18 inches 16
inches
SEAT DEPTH: 16 - 18
inches
BACK HEIGHT: 16½ inches 19 inches 23½ inches
BACK ANGLE RANGE: 95° to 100°
in 5°
increments
UPHOLSTERY: Light Grey
Vinyl
SEAT-TO-FLOOR
WITH FOOTBOARD
(M50/M51):
WITH FRONT RIGGINGS
(M50/M51):
16 - 18 inches 18 - 20
Light Grey Vinyl, Grey
20 to 24 inches
22 to 24 inches
18
inches
90 to 114° 90 to 115° 80° to 100°
Cloth, Tan Vinyl
20
inches
inches
18 inches 16 - 20 inches
16 - 18 inches 16 - 20 inches
(w/ headrest)
18¾ inches
(w/o headrest)
Charcoal Grey Vinyl Black Nylon
19 to 23 inches
19-23 inches
ASBA
16 - 20 inches
in 5° increments
Back with Seat
Pan
17-21 inches
19-21 inches
WITH ELEVATING SEAT
(M61):
OVERALL WIDTH: 24 inches (Without Joystick)
OVERALL HEIGHT: 35 to 43¾ inches 41½ inches
OVERALL LENGTH: 34 inches (With Footboard Folded)
DRIVE WHEELS/
TIRES: 10 x 3-inch (Flat Free inserts)
CASTER: 6 x 2-inch Front/Rear w/Precision Sealed Bearings
FOOTRESTS/
LEGRESTS:
*WEIGHT
W/O BATTERIES:
W/BATTERIES (U1):
SHIPPING
BASE W/O BATTERIES:
BASE WITH BATTERIES:
MEDIUM BACK:
SEMI-RECLINE:
OFFICE STYLE:
ASBA (20 X 20 X 20):
21-23 inches + up to 5 inches of Elevate
39½ inches (With Footboard Extended)
Flip Up, Depth and Height Adjustable, Footboard,
Swingaway Front Rigging, Elevating Legrest
145 to 170 lbs
192 to 217 lbs
107 lbs
154 lbs
40 lbs
64 lbs
44 lbs
48 lbs
19 to 21 inches + up
to 5 inches of
Elevate
+ up to 5 inches
17 to 19 inches
of Elevate
Part No. 1125075 11 Pronto® Series
TYPICAL PRODUCT PARAMETERS
MEDIUM
BACK
SEMI-RECLINE
BACK
OFFICE STYLE,
SEMI-RECLINE
ASBA
BACK
ARMRESTS: Adjustable Width, Angle, Heights and Depth
BATTERIES: U1 - Quantity 2
WEIGHT LIMITATION: 300 lbs
PERFORMANCE
SPEED:
TURNING RADIUS:
**RANGE (VARIABLE):
0 to 4.3 m.p.h.
19½ inches
up to 12 miles
*NOTE: Includes seating systems and accessories.
**NOTE: Values for range are calculated for maximum chair weight rating using largest batteries
applicable (U1), per test procedures described in ANSI/RESNA WC/VOL2-1998 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 105
for more information about the battery discharge indicator.
Pronto® Series 12 Part No. 1125075
SECTION 1—GENERAL GUIDELINES
SECTION 1—GENERAL GUIDELINES
WARNING
SECTION 1 - GENERAL GUIDELINES contains important information for the safe
operation and use of this product. DO NOT use this product or any available
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 unable to understand the Warnings, Cautions or Instructions,
contact a healthcare professional, dealer or technical personnel before attempting
to use this equipment - otherwise, injury or damage may occur.
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.
Part No. 1125075 13 Pronto® Series
SECTION 1—GENERAL GUIDELINES
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.
Pronto® Series 14 Part No. 1125075
SECTION 1—GENERAL GUIDELINES
Carefully read battery/battery charger information prior to installing, servicing or
operating your wheelchair.
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 device being connected. Use of improper extension cord could result in risk of
fire and electric shock. Three prong to two prong adapters should not be used. Use
of three prong adapters can result in improper grounding and present a shock
hazard to 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 twoprong 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.
Part No. 1125075 15 Pronto® Series
SECTION 1—GENERAL GUIDELINES
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 Limitation
The M50, M51 and M61 wheelchairs with SureStep have a weight limitation of 300 lbs.
Pronto® Series 16 Part No. 1125075
SECTION 2—EMI INFORMATION
SECTION 2—EMI INFORMATION
WARNING
CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION
REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC
INTERFERENCE ON YOUR POWERED WHEELCHAIR.
Electromagnetic Interference (EMI) From Radio Wave Sources
Powered wheelchairs and motorized scooters (in this text, both will be referred to
as powered wheelchairs) may be susceptible to electromagnetic interference (EMI),
which is interfering electromagnetic energy (EM) emitted from sources such as
radio stations, TV stations, amateur radio (HAM) transmitters, two way radios, and
cellular phones. The interference (from radio wave sources) can cause the powered
wheelchair to release its brakes, move by itself, or move in unintended directions. It
can also permanently damage the powered wheelchair's control system. The
intensity of the interfering EM energy can be measured in volts per meter (V/m).
Each powered wheelchair can resist EMI up to a certain intensity. This is called its
"immunity level." The higher the immunity level, the greater the protection. At this
time, current technology is capable of achieving at least a 20 V/m immunity level,
which would provide useful protection from the more common sources of radiated
EMI.
There are a number of sources of relatively intense electromagnetic fields in the
everyday environment. Some of these sources are obvious and easy to avoid.
Others are not apparent and exposure is unavoidable. However, we believe that by
following the warnings listed below, your risk to EMI will be minimized.
The sources of radiated EMI can be broadly classified into three types:
1) Hand-held Portable transceivers (transmitters-receivers with the antenna
mounted directly on the transmitting unit. Examples include: citizens band (CB)
radios, "walkie talkie", security, fire and police transceivers, cellular telephones,
and other personal communication devices).
NOTE: Some cellular telephones and similar devices transmit signals while they are ON,
even when not being used.
2) Medium-range mobile transceivers, such as those used in police cars, fire trucks,
ambulances and taxis. These usually have the antenna mounted on the outside of
the vehicle; and
3) Long-range transmitters and transceivers, such as commercial broadcast
transmitters (radio and TV broadcast antenna towers) and amateur (HAM)
radios.
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,
AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to
your powered wheelchair.
Part No. 1125075 17 Pronto® Series
SECTION 2—EMI INFORMATION
WARNING
Powered Wheelchair Electromagnetic Interference (EMI)
Because EM energy rapidly becomes 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 possible to unintentionally bring 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 braking.
Therefore, the warnings listed below are recommended to prevent possible
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
band (CB) radios, or turn ON personal communication devices, such as cellular
phones, while the powered wheelchair is turned ON;
2) Be aware of nearby transmitters, such as radio or TV stations, and try to avoid
coming close to them;
3) If unintended movement or brake release occurs, turn the powered wheelchair
OFF as soon as it is safe;
4) Be aware that adding accessories or components, or modifying the powered
wheelchair, may make it more susceptible 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 brake release to the powered
wheelchair manufacturer, and note whether there is a source of EMI nearby.
Important Information
1) 20 volts per meter (V/m) is a generally achievable and useful immunity level
against EMI (as of May 1994) (the higher the level, the greater the protection);
2) This device has been 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 by
Invacare may adversely affect the EMI immunity levels.
Pronto® Series 18 Part No. 1125075
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
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 should be checked periodically for cracks
and wear, and should 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.
Part No. 1125075 19 Pronto® Series
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
❑ 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
SOLUTIONS
FLUTTER
LEFT/RIGHT
WHEELCHAIR VEERS
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.
SLUGGISH TURN/
CASTERS
PERFORMANCE
RATTLES
SQUEAKS AND
LOOSENESS
IN WHEELCHAIR
About Joystick Diagnostics
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.
WHEELS
WHEELCHAIR 3
Pronto® Series 20 Part No. 1125075
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SPJ+ Information Gauge Display Diagnostics
DISPLAY DESCRIPTION DEFINITION COMMENTS
Information
Gauge
Display
All LEDs are off. Power is off.
All LEDs are on. Power is on. Fewer than three LEDs on
Left RED LED is flashing. Battery charge is low. The batteries should be
implies reduced battery
charge.
charged as soon as possible.
Left to Right “chase” alternating with steady display.
All LEDs are flashing slowly. Joystick has detected Out-
Joystick is in programming, inhibit and/or charging mode.
of-Neutral-at-Power-Up
mode.
The steady LEDs indicate
the current state of the
battery charge.
Release the joystick back
to Neutral.
Part No. 1125075 21 Pronto® Series
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SPJ Information Gauge Display Diagnostics
DISPLAY DESCRIPTION DEFINITION COMMENTS
All three LEDs are Off. Power is Off.
INVACARE
All three LEDs are On. Power is On. Fewer than three LEDs
INVACARE
RED LED is flashing. Battery charge is low. The batteries should be
INVACARE
On implies reduced
battery charge.
charged as soon as
possible.
INVACARE
INVACARE
INVACARE
Left to Right “chase”
alternating with steady
display.
Joystick is in
programming, inhibit
and/or charging mode.
GREEN LED is flashing. Joystick is in Speed Limit
mode.
All LEDs are flashing slowly. Joystick has detected Out-
of-Neutral-at-Power-Up
mode.
All LEDs are flashing
quickly.
Joystick has detected a
fault.
The steady LEDs indicate
the current state of the
battery charge.
The current state of
battery charge will be
displayed at the same
time.
Release the joystick back
to Neutral.
Joystick uses Flash codes
to indicate faults.
INVACARE
Pronto® Series 22 Part No. 1125075
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Diagnostic Codes
POSSIBLE
ERROR CODE
DESCRIPTION
DIAGNOSTICS CODE
NUMBER OF FLASHES
1 E 01 User Fault 00 Stall Timeout or user error. Release joystick to neutral and try again.
2 E02 Battery Fault 00 Recharge batteries or replace. Check the batteries and cable. Try charg-
3 E03 Left Motor Fault 00 Left Motor Short Circuit Check the left motor, connections and
SUB CODE*
01 Left Motor Open Circuit
02 Left Motor Connection Fault
03 Motor Terminal Connected
04 Left Motor Voltage Fault
DETAILS OF
B-
to B+
ERROR CODE
ing the batteries. Batteries may require
motor cable.
SOLUTION
replacing.
05 Left Motor Bridge Fault
06 Too Many Hardware Current
Limit Events
07 Current Offset Out of Range
08 Hardware Current Limit Fault
4 E04 Right Motor Fault 00 Right Motor Short Circuit Check the right motor, connections and
01 Right Motor Open Circuit
02 Right Motor Connection Fault
B-
03 Motor Terminal Connected
to B+
04 Right Motor Voltage Fault
05 Right Motor Bridge Fault
06 Too Many Hardware Cur-
rent Limit Events
07 Current Offset Out of Range
08 Hardware Current Limit Fault
motor cable.
Part No. 1125075 23 Pronto® Series
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
ERROR CODE
DESCRIPTION
DIAGNOSTICS CODE
NUMBER OF FLASHES
5 E05 Left Park Brake
Fault
6 E06 Right Park Brake
Fault
SUB CODE*
00 Left Park Brake Drive-Time
01 Left Park Brake Output
Enabled When Wheelchair
02 Left Park Brake Output Did
not Enable When Entering
03 Left Park Brake fault during
power-up testing
04 Left park brake feedback low
during drive (park brake
00 Right Park Brake Drive-Time
DETAILS OF
ERROR CODE
Test Failed
Idle
Drive Mode
short)
Test Failed
POSSIBLE
SOLUTION
Check the left park brake connections and
cable.
Check the right park brake connections
and cable.
01 Right Park Brake Output
Enabled When Wheelchair
Idle
02 Right Park Brake Output Did
not Enable When Entering
Drive Mode
03 Right Park Brake fault during
power-up testing
04 Right park brake feedback
low during drive (park brake
short)
7 E07 Remote Fault 00 Local SR Fault (CPU,
EEPROM, etc.)
01 Joystick fault at the remote
02 Speed pot fault at the remote
Check the communications bus, connec-
tions and wiring. Replace the remote.
Pronto® Series 24 Part No. 1125075
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
POSSIBLE
ERROR CODE
DESCRIPTION
DIAGNOSTICS CODE
NUMBER OF FLASHES
8 E08 Controller Fault 00 Controller fault Check connections and wiring. Replace
SUB CODE*
01 RAM fault
02 ROM fault
03 CPU fault
04 EEPROM fault
05 Watchdog fault
06 Stack fault
07 Software fault
08 Power-up testing fault
DETAILS OF
ERROR CODE
power module.
SOLUTION
09 Relay fault or precharge fault
10 Bridge fault or disable all fault
11 Electronics fault: Thermistor
12 Calibration setting fault
9 E09 Communications
Fault
10 E10 General Fault 00 General fault Check all connections and wiring. Contact
11 E11 Incompati-
ble/incorrect
Remote
00 Remote connection lost Check connections and wiring. Replace
01 Low communication mode
00 Incompatible/incorrect
Remote
Invacare Technical Service.
Wrong type of remote connected. Ensure
the branding of the joystick matches that
Bus cable.
of controller unit.
Motor/Gearbox/Brake
SYMPTOM PROBABLE CAUSE SOLUTIONS
Bad bearings. If bearings are bad, replace motor. Refer to
Motor makes a
clicking noise.
Raised commutator plate inside of
motor.
Removing/Installing the Motor
Ohm out motor and replace motor if high reading
is present. Normal reading is .5-5 Ohms. Refer to
Motor Testing
the Motor on page 112.
on page 31 or Removing/Installing
on page 112.
Grinding noise or
motor is locking
up.
Motors stall and
starts up again.
Part No. 1125075 25 Pronto® Series
Bad bearings. Bad Gears. Replace motor/gearbox. Refer to
Removing/Installing the Motor
Current Rollback. Stop driving and let electronics cool.
on page 112.
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE SOLUTIONS
Motor chatters or
runs erratically, or
only one motor
turns.
Wheelchair veers
to the left or right
when driving on
level surface.
Gearbox is leaking
Fluid.
Damaged connector or worn
brushes.
Bad motor or gear box.
Motor release lever is disengaged. Engage motor release levers. Refer to
Controller malfunction. Check for error codes with programmer. Refer to
Uneven tire pressure.
Motors out of balance.
Bad seal around drive shaft.
Loose hardware.
Ohm out motors. Check brushes and replace
brushes if necessary. Replace motor/gearbox if
high reading is present. Normal reading is 0-5
Ohms. Refer to Motor Testing
Replacing Motor Brushes
Removing/Installing the Motor
Engaging/Disengaging Motor Release Lever
page 114.
electronics manual.
Inflate tires.
Replace tires if worn.
Use programmer to balance motors.
If seal is bad, replace motor/gearbox. Remove
motor brushes and inspect for grease
contamination. Replace motor/gearbox if
contamination is found. Refer to Replacing Motor
Brushes on page 116 or Removing/Installing the
Motor on page 112.
on page 31,
on page 116 or
on page 112.
on
Bad bearing in motor or gearbox. Replace motor/gearbox. Refer to
Excessive clicking
coming from
motor/gearbox.
Rough driving. Gearbox shaft movement or bent
Motor Stutters.
Motor Fails to start
after initial
installation.
Loose wheel hardware. Tighten hardware, (use removable Loctite™on
shaft.
Poor connection or worn brushes. Check DCL connectors. Check brushes and
Battery voltage is too low.
Bad Connection.
Brake Disengaged.
If loose hardware is found retighten hardware.
Removing/Installing the Motor
hardware). Follow torque settings in this manual.
Replace motor/gearbox. Refer to
Removing/Installing the Motor
replace if necessary. Refer to Replacing Motor
Brushes on page 116.
Check batteries and recharge if necessary. Refer
to Charging Batteries
Check connector.
Engage brake.
on page 104.
on page 112.
on page 112.
Pronto® Series 26 Part No. 1125075
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE SOLUTIONS
Motor is running
then fails to restart
when stopped.
Motor runs but
loses power.
Heavy load on the motors forcing
controller into the current rollback
mode.
Blown fuse in battery wiring
harness.
Damaged motor. Replace brushes if necessary, or replace
Controller power stage board or
relays may be damaged.
Controller senses heavy load and
has entered the current rollback
mode.
Batteries are going bad. Replace batteries. Refer to Removing/Installing
Leave power On and allow controller to count
down, and recharge the batteries overnight with
power On.
Replace battery wiring harness. Refer to
Connecting/Disconnecting Battery Cables
page 101.
motor/gearbox if internal damage is determined.
Refer to Replacing Motor Brushes
Removing/Installing the Motor
Ohm out motor to check for possible internal
damage (worn out brushes may be possible).
Refer to Motor Testing
Motor Brushes on page 116.
Replace controller or send to Invacare for repair.
Refer to Replacing the Controller
Stop driving and let electronics cool.
Batteries from/into Battery Tray on page 99.
on page 31 or Replacing
on page 116 or
on page 112.
on page 125.
on
Wheelchair loses
all power while
driving.
Bad Connection on wheelchair. Turn power “Off”, wait 10 seconds and turn
power back “On”.
Check joystick connection.
Check battery connection and fuses.
Battery
SYMPTOM PROBABLE CAUSE SOLUTIONS
Batteries won’t
charge.
Short Charge Time
Blown battery fuse or damaged cables.
Batteries sat discharged too long.
One or both batteries may be bad (if
batteries charge up to soon).
Check cables for damage or replace battery wiring
harness. Refer to Connecting/Disconnecting
Battery Cables on page 101.
Replace batteries. Refer to Removing/Installing
Batteries from/into Battery Tray on page 99.
Check each battery and replace if needed. Refer to
Removing/Installing Batteries from/into Battery
Tray on page 99.
Part No. 1125075 27 Pronto® Series
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE SOLUTIONS
Check all connections and housings for damage. If
you have blown fuse a new battery wiring harness
must be purchased. Refer to
Connecting/Disconnecting Battery Cables
page 101.
Check battery voltage and replace if necessary.
Refer to Removing/Installing Batteries from/into
Battery Tray on page 99.
vibrated loose when driving on rough terrain.
Replace battery wiring harness. Refer to
Connecting/Disconnecting Battery Cables
page 101.
No power to
wheelchair motors.
Corroded battery
wiring connections.
Bad connection or blown fuse. Check
Joystick connection.
Batteries are dead.
Loose battery connections. Check battery cable connections, may have
Possible water, salt, or urine
damage.
Battery Charger
SYMPTOM PROBABLE CAUSE SOLUTIONS
No LED’s on
Charger
Batteries won’t
charge.
Charger not plugged into outlet, or
disconnected from wiring harness on
wheelchair.
No AC power at outlet. Check for AC power with digital volt meter.
Damaged power cord. Check for damage on the power cord, replace if
Charger LED’s burnt out. Send charger to Invacare for repair.
Charger may have internal fuse that is
blown.
Blown battery fuse in wiring harness,
or charger.
Charger not plugged into outlet. Make sure charger is plugged into the outlet.
No AC power at the outlet. Check for AC power with a digital volt meter.
Charger Power cord may be
damaged, or the connector may be
damaged.
Charger may have internal damage. Charge batteries with known good charger.
Battery voltage too low for charger to
start charging cycle.
Make sure the charger is plugged into the outlet
and check the wiring on the wheelchair.
damaged or send to Invacare for repair.
Remove charger cover and check for fuses. iI fuses
are present, Ohm out fuses and replace if
necessary. Refer to Replacing the On-Board
Battery Charger Fuse on page 108.
Check battery wiring harness fuse on the
wheelchair. Replace battery wiring harness if fuse is
blown. Refer to Connecting/Disconnecting Battery
Cables on page 101.
Check fuse in the charger. Refer to Replacing the
On-Board Battery Charger Fuse on page 108.
Check for damage and replace if necessary, or
send in for repair.
Replace batteries. Refer to Removing/Installing
Batteries from/into Battery Tray on page 99.
on
on
Pronto® Series 28 Part No. 1125075
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE SOLUTIONS
Batteries have
short driving range
during a single
charge. Battery
Gauge falls off
faster than normal.
Consumer not charging batteries long
enough.
Batteries may be weak. Perform load test or check “Battery Quality Menu”
Check programming settings. Torque setting and power level setting may be too
Heavy load on motors. Chairs weight distribution may be offset
Instruct consumer to charge for 8-10 hours
minimum.
with the programmer. Refer to electronics manual.
Refer to Field Load Test
high. Refer to electronics manual.
(wheelchair may be front loaded).
M61 Only
SYMPTOM PROBABLE CAUSE SOLUTIONS
Wheelchair slows
or stops while
driving and the Seat
Function I indicator
is lit.
Elevating seat is elevated. Return seat to its lowest position. Refer to
Elevating the Seat
Elevating seat sensor is damaged. Examine elevating seat sensor. Replace if necessary.
Refer to Removing/Installing the Actuator Switch
Sensor on page 97.
on page 37.
on page 30.
Checking Battery Charge Level
The following “Do’s” and “Don’ts” are provided for your convenience and safety.
DO DON’T
Read and understand this manual and any service
information that accompanies a battery and charger
before operating the wheelchair.
Move the wheelchair to a work area before opening
battery box or installing service batteries.
Recharge as frequently as possible to maintain a high
charge level and extend battery life.
Follow recommendations in this manual when
selecting a battery or charger.
Fully charge new batteries before using. Don’t put new batteries into servcie before charging.
Use a carrying strap to remove, move or install a
battery.
Push battery clamps on the terminals. Spread clamps
wider if necessary.
Don’t perform any installation or maintenance without
first reading this manual.
Don’t perform installation or maintenance of batteries
in an area that could be damaged by battery spills.
Don’t make it a habit to discharge batteries to the
lowest level.
Don’t use randomly chosen batteries or chargers.
Don’t tip or tilt batteries.
Don’t tap on clamps and terminals with tools.
Use ONLY a GEL charger for a GEL battery or
“Sealed” battery.
Part No. 1125075 29 Pronto® Series
Don’t mismatch your battery and chargers.
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Field Load Test
NOTE: For this procedure, refer to FIGURE 3.1 on page 31.
Old batteries lose their ability to store and release power, due to increased internal
resistance. This means that as you try to take power from the battery, some of that power
is used up in the process of passing through the battery, resulting in less voltage at the
posts. The more power drawn, the lower the voltage available. When this lost voltage
drops the output 1.0 volts under load (2.0 for a pair), replace the batteries.
To spot this problem, test batteries under load.
Use a digital voltmeter to check battery charge level at the charger connector. The charger
connector is located on the joystick.
NOTE: Read these instructions carefully and the manufacturer’s instructions on the digital
voltmeter before using the digital voltmeter.
1. Ensure that power is Off.
2. Make sure battery is fully charged. An extremely discharged battery will exhibit the
same symptoms as a bad one.
3. Remove the footrests from the wheelchair. Refer to Front Riggings/FootBoard on
page 73.
4. Connect the voltmeter leads to the charger port on the wheelchair as shown in
FIGURE 3.1. Most digital voltmeters are not affected by polarity, however, analog
meters (meters with swinging needles) can be and should be used carefully. A good
meter reading should be 25.5 to 26 VDC.
WARNING
When performing STEPS 5 and 6, ensure feet are clear from casters and wall,
otherwise injury may result.
5. Sit in wheelchair and place feet against a wall, workbench or other stationary object.
6. Turn the power On and carefully push the joystick forward, trying to drive the
wheelchair through the stationary object.
NOTE: Performing STEP 6 puts a heavy load on the batteries as they try to push through the
stationary object. If the wheels spin, have two individuals (one on each arm) apply as much
downward pressure as possible on the arms of the wheelchair.
7. Read the meter while the motors are straining, no longer than 3-4 seconds, to
determine the voltage under load.
NOTE: If the voltage drops more than 2 volts from a pair of fully charged batteries while under
load, they should be replaced regardless of the unloaded voltages.
Pronto® Series 30 Part No. 1125075
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