Invacare M71 User Manual 2
Service Manual
Pronto® M71
with SureStep™
™
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
REFERENCE DOCUMENTS
WARNING
DO NOT OPERATE THIS EQUIPMENT WITHOUT FIRST READING
AND UNDERSTANDING THIS MANUAL. IF YOU ARE UNABLE TO
UNDERSTAND THE WARNINGS, CAUTIONS, AND
INSTRUCTIONS, CONTACT A HEALTHCARE PROFESSIONAL,
DEALER OR A QUALIFIED TECHNICIAN BEFORE ATTEMPTING
TO USE THIS EQUIPMENT - OTHERWISE INJURY OR DAMAGE
MAY RESULT.
PROCEDURES OTHER THAN THOSE DESCRIBED IN THIS
MANUAL MUST
BE PERFORMED BY A QUALIFIED TECHNICIAN.
IF WHEELCHAIR IS EQUIPPED WITH POWER TILT ONLY OR THE
FORMULA PTO PLUS SEATING SYSTEM, REFER TO POWER TILT
ONLY FOR PRONTO M71 AND M91 OWNER’S MANUAL, PART
NUMBER 1118362 OR TO FORMULA PTO PLUS POWERED
SEATING SERVICE MANUAL, PART NUMBER 1125031 TO
PERFORM THE FOLLOWING PROCEDURES:
• TILTING THE SEAT ASSEMBLY (REPLACES REMIVNG/
INSTALLING THE SEAT ASSEMBLY IN THIS MANUAL)
• ADJUSTING SEAT HEIGHT
• ADJUSTING SEAT POSITION
• CHARGING THE BATTERIES
REFERENCE DOCUMENTS
DOCUMENT PART NUMBER
M71 with MK5™Owners Manual BEFORE 1/24/06 1106631
M71 with MK
EX™Electronics Owners Manaul 1114808
MK
5
NX™Electronics Owners Manual 1110532
MK
5
MK6i™Field Reference Guide 1141471
MK6i Service Manual 1143203
MKIV™RII Electronics Owners Manual 1095272
M71 Base with MK6i Owners Manual 1143240
NOTE: Updated versions of this manual are available on www.invacare.com.
Pronto® M71™ 2 Part No 1118377
Owners Manual AFTER 1/23/06 1141449
5
TABLE OF CONTENTS
TABLE OF CONTENTS
REFERENCE DOCUMENTS ................................................................. 2
SPECIAL NOTES ................................................................................ 8
LABEL LOCATIONS ......................................................................... 10
Wiring Label on M71 Standard with Battery Covers.......................................................................10
M71 with PTO+ Labels ...........................................................................................................................12
TYPICAL PRODUCT PARAMETERS .................................................. 13
SECTION 1—GENERAL GUIDELINES ................................................. 14
Repair or Service Information ...............................................................................................................14
Operation Information............................................................................................................................14
Tire Pressure .............................................................................................................................................15
Electrical .....................................................................................................................................................15
Grounding Instructions.......................................................................................................................15
Batteries......................................................................................................................................................15
SECTION 2—EMI INFORMATION ..................................................... 16
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING .................... 18
Safety Inspection Checklists...................................................................................................................18
Inspect/Adjust .......................................................................................................................................18
Troubleshooting........................................................................................................................................19
Troubleshooting - Electrical ..............................................................................................................19
Wheels ...................................................................................................................................................24
Troubleshooting - Common .............................................................................................................24
Troubleshooting - Motor/Gearbox/Brake .....................................................................................24
Troubleshooting - Battery .................................................................................................................26
Troubleshooting - Battery Charger.................................................................................................26
Checking Battery Charge Level.............................................................................................................27
Field Load Test..........................................................................................................................................28
Motor Testing.......................................................................................................................................29
Part No 1118377 3 Pronto® M71™
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTION 4—SEAT ASSEMBLY .......................................................... 30
Removing/Installing the Seat Assembly................................................................................................30
Removing Seat ......................................................................................................................................30
Installing Seat.........................................................................................................................................30
Adjusting the Seat Height .......................................................................................................................31
Removing/Installing the Adjustable Height Tubes.............................................................................33
Adjustable ASBA Seat Service Procedures.........................................................................................35
Removing/Installing the Seat Pan ......................................................................................................35
Adjusting the Seat Width ...................................................................................................................35
Adjusting the Seat Depth ...................................................................................................................36
Removing/Installing Side Rails............................................................................................................38
Replacing the Seat Frame ...................................................................................................................40
Removing/Installing the Back Canes ................................................................................................41
Replacing Seat Positioning Strap.......................................................................................................42
Adjusting the Back Angle....................................................................................................................43
ASBA Seat Service Procedures .............................................................................................................44
Removing/Installing the Seat Pan ......................................................................................................44
Changing the Seat Width/Depth ......................................................................................................45
Replacing the Seat Frame ...................................................................................................................45
Replacing the Seat Positioning Strap................................................................................................46
Removing/Installing the Back Upholstery .......................................................................................46
Removing/Installing/Changing the Back Cane Height ..................................................................46
Adjusting the Back Angle....................................................................................................................50
Van Seat Service Procedures .................................................................................................................51
Adjusting the Back Angle....................................................................................................................51
Adjusting the Seat Position on Van Seat Frame............................................................................51
Adjusting the Van Seat Back Depth.................................................................................................53
Part No 1118377 4 Pronto® M71™
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTION 5—ARMS ......................................................................... 54
Arm Service Procedures for Van Seat.................................................................................................54
Removing/Installing Van Seat Arm ...................................................................................................54
Adjusting Van Seat Arm Width ........................................................................................................54
Adjusting Van Seat Arm Angle..........................................................................................................55
Adjusting Van Seat Arm Height ........................................................................................................55
Replacing Van Seat Armrest Pads (Wheelchairs Built before October 2003) ......................56
Replacing Van Seat Armrest Plate (Wheelchairs Built before October 2003)......................56
Replacing Van Seat Armrest Pad Assembly (Wheelchairs Built After October 2003)........57
Arm Service Procedures for ASBA or Adjustable ASBA Seat.......................................................58
Removing/Installing Flip Back Armrest............................................................................................58
Adjusting the Flip Back Armrest.......................................................................................................58
SECTION 6—WHEELS ....................................................................... 60
Replacing the Front/Rear Casters.........................................................................................................60
Adjusting Caster Assembly.....................................................................................................................61
Removing/Installing the Front/Rear Caster Assemblies...................................................................62
Removing ...............................................................................................................................................62
Installing..................................................................................................................................................62
Removing/Installing the Front Headtube Assembly..........................................................................62
Removing/Installing the Drive Wheel ..................................................................................................63
Removing the Drive Wheel...............................................................................................................63
Installing the Drive Wheel .................................................................................................................63
Replacing the 2-Piece Wheel Rim and/or the Foam Filled or Pneumatic Tires.........................64
Part No 1118377 5 Pronto® M71™
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTION 7—FRONT RIGGINGS/FOOTBOARD .................................... 66
Installing/Removing Front Riggings .......................................................................................................66
Installing..................................................................................................................................................66
Removing ...............................................................................................................................................66
Adjusting Footrest Height ......................................................................................................................67
Model PHWH93 Front Riggings .......................................................................................................67
Model PH904A and PHAL4A Front Riggings ................................................................................67
Replacing Heel Loops ..............................................................................................................................68
Raising/Lowering Elevating Front Riggings ..........................................................................................68
Adjusting/Replacing Telescoping Front Rigging Supports................................................................68
Van Seat..................................................................................................................................................68
ASBA Seat..............................................................................................................................................70
Adjustable ASBA Seat .........................................................................................................................70
Removing/Installing the Footboard Assembly....................................................................................71
Removing ...............................................................................................................................................71
Installing..................................................................................................................................................71
Angle/Depth/Height Adjustment of the Footboard Assembly.......................................................72
Angle Adjustment ................................................................................................................................72
Depth Adjustment ...............................................................................................................................72
Height Adjustment...............................................................................................................................73
SECTION 8—SHROUDS/FRAME ........................................................ 74
Removing/Installing the Shrouds ...........................................................................................................74
Disassembling/Reassembling the Side Frame Assembly...................................................................76
Removing/Installing the Pivot Tube ......................................................................................................76
Removing/Installing the Walking Beam................................................................................................77
Replacing the Side Frame........................................................................................................................77
Removing/Installing the SureStep Springs ...........................................................................................78
SECTION 9—MOTORS ..................................................................... 80
Removing/Installing the Motor ..............................................................................................................80
Removing/Installing the Motor Release Lever ...................................................................................81
Replacing Internal Motor Brushes ........................................................................................................82
Inspecting/Replacing External Motor Brushes ...................................................................................84
Electro-Mechanical Parking Brake Testing..........................................................................................85
Pronto® M71™ 6 Part No 1118377
SECTION 10—BATTERIES/CHARGER ................................................ 86
Warnings For Handling and Replacing Batteries ...............................................................................86
Using the Proper Batteries.....................................................................................................................87
Removing/Installing Batteries From/Into Battery Tray ....................................................................88
Removing Batteries..............................................................................................................................89
Installing Batteries................................................................................................................................89
Connecting/Disconnecting Battery Cables.........................................................................................91
Connecting Battery Cables................................................................................................................91
Disconnecting Battery Cables...........................................................................................................93
Replacing the On-Board Battery Charger Fuse.................................................................................94
Replacing the On-Board Battery Charger ..........................................................................................95
SECTION 11—CONTROLLER AND JOYSTICK .................................... 97
Disconnecting/Connecting the Joystick...............................................................................................97
Disconnecting .......................................................................................................................................97
Connecting ............................................................................................................................................97
Removing/Installing the Joystick ............................................................................................................98
Van Seat Models ...................................................................................................................................98
ASBA and Adjustable ASBA Models................................................................................................99
Replacing the MKIV RII Controller ................................................................................................... 100
Replacing the MK5-NX or MK660 ACC Controller .................................................................... 102
SECTION 12—DISASSEMBLING/ASSEMBLING THE M71 .................... 103
Disassembling/Assembling the Wheelchair ..................................................................................... 103
Disassembling the Wheelchair....................................................................................................... 103
Assembling the Wheelchair............................................................................................................ 106
SECTION 13—TRANSPORT READY PACKAGE ................................ 109
About Transport Ready Packages...................................................................................................... 110
Compliance Information ...................................................................................................................... 110
Specifications...................................................................................................................................... 110
Securing the Wheelchair to the Vehicle .......................................................................................... 111
Positioning the Wheelchair in the Vehicle.................................................................................. 111
Securement Points............................................................................................................................ 112
Securing the Wheelchair ................................................................................................................. 112
Securing the Occupant......................................................................................................................... 113
Wheelchair-Anchored Belts........................................................................................................... 113
Vehicle-Anchored Belts................................................................................................................... 114
Seating System ................................................................................................................................... 114
Positioning Belts ................................................................................................................................ 115
LIMITED WARRANTY ................................................................... 116
Part No 1118377 7 Pronto® M71™
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 indicates an imminently hazardous situation which, if not avoided,
DANGER
WARNING
CAUTION
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.
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.
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
WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT RESTRAINTS (TRRO OR
TRBKTS)
TRRO includes four factory-installed transport brackets and a wheelchair anchored
pelvic belt. TRRO has been crash-tested in accordance with ANSI/RESNA WC Vol 1
Section 19 Frontal Impact Test requirements for wheelchairs with a 168 lb crash
dummy, which corresponds to a person with a weight of 114 to 209 lbs.
TRBKTS includes four factory-installed wheelchair transport brackets. TRBKTS has
not been crash-tested in accordance with WC 19. Use these transport brackets only
to secure an unoccupied wheelchair during transport.
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.
Refer to Transport Ready Package
on page 109 for more information about
transporting the wheelchair.
SEAT POSITIONING STRAP
It is the obligation of the Dealers, Therapists and other Healthcare Professionals to
determine if a seat positioning strap is required to ensure the safe operation of this
equipment by the user. Serious injury can occur in the event of a fall from a
powered wheelchair.
Pronto® M71™ 8 Part No 1118377
SPECIAL NOTES
TRRO AND TRBKTS WARNINGS
Only use the transport brackets included with TRRO and TRBKTS for the purposes
described in this manual.
Battery support brackets MUST be installed at all times. Otherwise, the wheelchair
will not be WC/19 compliant. Refer to Removing/Installing Batteries From/Into
Battery Tray on page 88.
WARNING
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.
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 1118377 9 Pronto® M71™
LABEL LOCATIONS
LABEL LOCATIONS
Wiring Label on M71 Standard with Battery Covers
Battery Covers
NOTE: Label under battery cover.
Pronto® M71™ 10 Part No 1118377
Serial Number is located
underneath seat in rear, should
not have to remove seat.
LABEL LOCATIONS
One of these battery wiring
labels is in this location.
Part No 1118377 11 Pronto® M71™
LABEL LOCATIONS
M71 with PTO+ Labels
Serial
Number
Located
HERE
rear view of
actuator
Pronto® M71™ 12 Part No 1118377
TYPICAL PRODUCT PARAMETERS
TYPICAL PRODUCT PARAMETERS
18 INCH VAN 20 INCH VAN ASBA ADJUSTABLE
ASBA
SEAT WIDTH: 18 inches 20 inches 16 to 20 inches
SEAT DEPTH: 16 to 18 inches 18 to 20 inches 16 to 20 inches
BACK HEIGHT: 18 inches 18 inches 16 to 20 inches
BACK ANGLE RANGE: N/A N/A 80° to 100° 85° to 105°
UPHOLSTERY: Grey Cloth, Grey Vinyl, Tan Vinyl Black Nylon Back with Seat Pan
SEAT-TO-FLOOR: 21 to 23 inches (cushion not compressed) 18 to 20 inches (to seat pan)
OVERALL WIDTH OF BASE
(W/O JOYSTICK): 24 inches
OVERALL HEIGHT: 48 inches
OVERALL LENGTH
FOOTBOARD FOLDED:
FOOTBOARD EXTENDED:
WEIGHT
WITHOUT BATTERIES:
WITH BATTERIES:
SHIPPING (WITHOUT
BATTERIES):
DRIVE WHEELS/TIRES
(PNEUMATIC) 10 x 3½ inches
CASTERS W/PRECISION
SEALED BEARINGS: 6 x 2 inches
FOOTRESTS/LEGRESTS: Flip Up, Depth and Height Adjustable, Footboard, Swingaway Front Rigging,
ARMRESTS: Adjustable Width, Angle and Height
BATTERY REQUIREMENTS: Use only U1 batteries (Quantity - 2)
WEIGHT LIMITATION: up to 300 pounds
INCLINE CAPABILITY: 9°
PERFORMANCE
SPEED:
TURNING RADIUS:
*RANGE (VARIABLE):
OVERALL WIDTH OF BASE
(W/O JOYSTICK): 300 pounds
1
35 inches
39½ inches
150 pounds
203 pounds
200 pounds
Elevating Legrest
up to 4 MPH
19½ inches with footboard
up to 12 miles
1. 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 Connecting/Disconnecting Battery
Cables on page 91 for more information about the battery discharge indicator.
Part No 1118377 13 Pronto® M71™
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.
Repair or Service Information
Set-up of the Electronics 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.
DO NOT service or adjust your wheelchair while occupied, unless otherwise noted.
Wheelchairs should be examined during maintenance for signs of corrosion (water
exposure, incontinence, etc.). Electrical components damaged by corrosion should be
replaced IMMEDIATELY.
Wheelchairs that are used by incontinent users and/or are frequently exposed to water
may require replacement of electrical components more frequently.
Operation Information
Performance adjustments should only be made by professionals of the healthcare field or
persons fully conversant with this process and the driver's capabilities. Incorrect settings
could cause injury to the driver, bystanders, damage to the wheelchair and to
surrounding property.
After the wheelchair has been set-up, check to make sure that the wheelchair performs to
the specifications entered during the set-up procedure. If the wheelchair does NOT
perform to specifications, turn the wheelchair OFF immediately and reenter set-up
specifications. Repeat this section until the wheelchair performs to specifications.
DO NOT adjust the rear seat posts higher than the front seat posts.
Avoid storage or use near external flame or combustible product.
Pronto® M71™ 14 Part No 1118377
SECTION 1—GENERAL GUIDELINES
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.
Electrical
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.
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.
The warranty and performance specifications contained in this manual are based on the
use of deep cycle gel cell batteries. Invacare strongly recommends their use as the power
source for this unit.
Carefully read battery/battery charger information prior to installing, servicing or
operating the wheelchair.
Part No 1118377 15 Pronto® M71™
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.
Pronto® M71™ 16 Part No 1118377
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.
Part No 1118377 17 Pronto® M71™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SECTION 3—SAFETY INSPECTION/
TROUBLESHOOTING
Safety Inspection Checklists
These adjustments should be made whenever this product is serviced, especially as
part of the initial unit setup. Follow these procedures:
Inspect/Adjust
CAUTION
As with any vehicle, the wheels and tires should be checked periodically for cracks
and wear, and should be replaced.
❑ Ensure wheelchair rolls straight (no excessive drag or pull to one side).
❑ Ensure all fasteners on clothing guards are secure.
❑ Ensure arms are secure but easy to release and adjustment levers engage properly.
❑ Ensure adjustable height arms operate and lock securely.
❑ Ensure armrest pad sits flush against arm tube.
❑ Ensure seat and/or back upholstery have no rips.
❑ 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 axle nut and wheel mounting nuts are secure on drive wheels.
❑ Inspect wheel/fork 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 all caster/wheel/fork/headtube fasteners are secure.
❑ Inspect tires for flat spots and wear.
❑ Check pneumatic tires for proper inflation.
❑ Clean upholstery and armrests.
❑ 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.
❑ Inspect motor brushes and gearbox coupling.
❑ Inspect electrical components for signs of corrosion. Replace if corroded or damaged.
❑ Check that all labels are present and legible. Replace if necessary.
❑ Ensure the casters are free of debris.
Pronto® M71™ 18 Part No 1118377
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Troubleshooting
NOTE: For additional troubleshooting information and explanation of error codes, refer to the
individual electronics manual supplied with each wheelchair
Troubleshooting - Electrical
NOTE: For additional troubleshooting information and explanation of error codes, refer to the
individual Electronics Manual supplied with each wheelchair
SPJ+, SPJ+ w/PSS or SPJ+ w/ACC Joysticks
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.
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
implies reduced battery
charge.
Left RED LED is flashing. Battery charge is low. The batteries should be
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 1118377 19 Pronto® M71™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Service Indicator Light Diagnostics
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
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
charging the batteries. Batteries may
require replacing.
motor cable.
SOLUTION
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 Current
Limit Events
07 Current Offset Out of Range
08 Hardware Current Limit Fault
motor cable.
Pronto® M71™ 20 Part No 1118377
ERROR CODE
DESCRIPTION
DIAGNOSTICS CODE
NUMBER OF FLASHES
5 E05 Left Park Brake
Fault
6 E06 Right Park Brake
Fault
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
POSSIBLE
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
Check the left park brake connections and
Check the right park brake connections
and cable.
SOLUTION
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,
connections and wiring. Replace the
remote.
Part No 1118377 21 Pronto® M71™
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 Incompatible/
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.
MPJ+, PSR+, PSF+ Joysticks or Displays
SYMPTOM PROBABLE CAUSE SOLUTIONS
SPM L Park Brake Fault or
SPM R Park Brake Fault displays
and wheelchair does not drive.
CHARGER PLUGGED IN displays. Battery charger connected
SPM Battery Fault displays and the
wheelchair does not drive.
JOYSTICK TIMEOUT displays and
the wheelchair does not drive.
Motor lock levers disengaged
(Error code E9 or E10).
(Error code E28).
Batteries need to be charged
(Error code E14).
Joystick or input device is
disconnected (Error code 32).
Engage motor lock levers.
Unplug battery charger from the
wheelchair.
Charge batteries. If batteries fail to
charge properly, check battery charger
or replace batteries. Refer to Replacing
the On-Board Battery Charger on
page 95.
Turn Off power, reconnect the joystick
of input device and turn power On.
Pronto® M71™ 22 Part No 1118377
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM PROBABLE CAUSE SOLUTIONS
JS REV TOO LARGE
JS FWD TOO LARGE
JS LFT TOO LARGE or
JS RGT TOO LARGE
displays and the wheelchair does not
drive.
NEUTRAL TESTING displays. The joystick neutral test has
BAD JOYSTICK CAL VALUES
displays and the wheelchair does not
drive.
SPM NOT CONNECTED
SPM Communications Fault
displays and the wheelchair drives
slowly.
ATTENDANT ACTIVE and
displays.
Batteries draw excessive current
when charging.
The joystick or input device is
sending a value outside of the
reverse, forward, left or right
limits (Error codes E01, E02,
E03 or E04).
failed (Error code E18).
The joystick calibration values
are outside of the expected
range (Error code E19).
The MPJ or Display module is
not communicating with the
control module (Error code
E200).
The controller has determined a
fault during a previous turn-off
process (Error code E41).
The Proportional or Digital
Attendant control is active and
can be used to drive the chair
(Error code W05).
Battery failure.
Replace joystick or input device.
Release the joystick and try to get the
joystick back into the center-most
position.
Recalibrate the joystick (joystick throw
procedure).
Check the connections between the
joystick or display and the controller.
Turn the power Off and then back On.
Replace the controller if necessary.
Turn the wheelchair Off and back On.
This is normal behavior.
Have batteries checked for shorted cell.
Replace if necessary.
Electrical malfunction.
Battery indicator flashes the charge
level is low - immediately after
recharge.
Battery indicator flashes the charge
level is low - too soon after being
recharged.
Motor “chatters” or runs irregular. Electrical malfunction. Contact Dealer/Invacare for Service.
Joystick erratic or does not respond
as desired.
Wheelchair does not respond to
commands.
Power indicator Off - even after
recharging.
Battery failure.
Malfunctioning battery charger.
Electrical malfunction.
Batteries not charged.
Weak batteries.
Damaged motor coupling.
Electrical malfunction.
Controller programmed
improperly.
Poor battery terminal
connection.
Electrical malfunction. Contact Dealer/Invacare for Service.
Contact Dealer/Invacare for service.
Check batteries for shorted cell.
Replace if necessary.
Contact Dealer/Invacare for Service.
Contact Dealer/Invacare for Service.
Have charger checked.
Replace batteries if necessary. Contact
Dealer/Invacare for Service.
Contact Dealer/Invacare for Service.
Contact Dealer/Invacare for Service.
Contact Dealer/Invacare to have
controller reprogrammed.
Have terminals cleaned.
Part No 1118377 23 Pronto® M71™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
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
WHEELS
WHEELCHAIR 3
Troubleshooting - Common
SYMPTOM PROBABLE CAUSE SOLUTIONS
E28 Error code.
No LED’s on DPJ/
SPJ Joystick
Charger still plugged in when user
tries to drive the wheelchair.
Manual recliner, Power tilt and/or
recline is in reclined position and
drive lockout is engaged
Batteries discharged.
Fuse Open
Loose Battery Terminal
Unplug charger to drive wheelchair.
To disengage drive lockout, return seat to upright
position.
Plug connections back together, and check for
damaged wiring.
Troubleshooting - Motor/Gearbox/Brake
SYMPTOM PROBABLE CAUSE SOLUTIONS
Bad coupler between motor and
Motor makes a
clicking noise.
Grinding noise or
motor is locking up.
Motors stall and
starts up again.
Wheelchair will not
drive with power
on (E09 or E10).
Pronto® M71™ 24 Part No 1118377
gearbox or bad bearings.
Raised commutator plate inside of
motor.
Bad gearbox.
Bad coupler between motor and
gearbox or bad bearings. Bad Gears.
Current Rollback. Stop driving and let electronics cool.
Check motor locks. Engage motor locks to drive wheelchair.
Replace coupler or replace motor.
If bearings are bad, replace motor.
Ohm out motor and replace motor if high reading
is present. Normal reading is 0-5 Ohms.
Replace gearbox or motor.
Replace coupler mor motor.
If bearings are bad, replace motor.
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.
E09/E10 error code
will not go away.
Gearbox is leaking
Fluid.
Excessive clicking
coming from
motor/gearbox.
Gearbox shaft
movement or bent
shaft.
Motor Stutters.
Motor Fails to start
after initial installation.
Motor is running
then fails to restart
when stopped.
Damaged connector or worn
brushes.
Bad motor or gearbox
Controller malfunction. Check for error codes with programmer. Refer to
Uneven tire pressure.
Motors out of balance.
Bad motor connection.
Bad brake coil.
Bad seal around drive shaft
Loose hardware.
Bad bearing in motor or gearbox. Replace motor or gearbox.
Loose wheel hardware. Tighten hardware, (use removable Loctite™on
Rough driving. Replace motor or gearbox.
Poor connection or worn brushes. Check motor connectors. Check brushes and
Battery voltage is too low.
Bad Connection
Brake Disengaged
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 motor or
Ohm out motors. Check brushes and replace
brushes if necessary. Replace motor or gearbox if
high reading is present. Normal reading is 0-5
Ohms.
electronics manual, part number 1114808.
Inflate tires
Replace tires if worn.
Use programmer to balance motors
Check all connections. Ohm out each brake coil.
Normal reading is 45-50 Ohms.
If seal is bad, replace motor or gearbox. Remove
motor brushes and inspect for grease contamination. Replace motor or gearbox if contamination
is found.
If loose hardware is found retighten hardware.
hardware). Follow torque settings in this manual.
replace if necessary.
Check batteries and recharge if necessary.
Check connector
Engage brake
Leave power ON and allow controller to count
down, and recharge the wheelchair overnight with
power ON.
Replace battery wiring harness.
gearbox if internal damage is determined.
Ohm out motor to check for possible internal
damage (worn out brushes may be possible).
Controller power stage board or
relays may be damaged.
Motor runs but
loses power.
Wheelchair loses all
power while
driving.
Part No 1118377 25 Pronto® M71™
Controller senses heavy load and
has entered the current rollback
mode.
Bad Connection on wheelchair Turn power “OFF”, wait 10 seconds and turn
Replace controller or send to Invacare for repair.
Stop driving and let electronics cool.
power back “ON”.
Check Joystick connection
Check Battery connection and fuses
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Troubleshooting - Battery
SYMPTOM PROBABLE CAUSE SOLUTIONS
Batteries won’t
charge.
Short Charge Time
No power to
wheelchair motors.
Corroded battery
wiring connections.
E14 Error code. Low Voltage Recharge or replace battery.
Blown battery fuse or damaged cables.
Batteries sat discharged too long.
One or both batteries may be bad (if
batteries charge up to soon).
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.
Check cables for damage or replace battery wiring
harness.
Replace batteries
Check each battery and replace if needed.
Check all connections and housings for damage. If
you have blown fuse a new battery wiring harness
must be purchased.
Check battery voltage and replace if necessary.
vibrated loose when driving on rough terrain.
Replace battery wiring harness.
Troubleshooting - 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 in for repair.
Remove charger cover and check for fuses. if fuses
are present Ohm out fuses and replace if necessary.
Check battery wiring harness fuse on the wheelchair
Check fuse in the charger.
Check for damage and replace if necessary, or
send in for repair.
Replace batteries.
Pronto® M71™ 26 Part No 1118377
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.
E28 Error code.
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 (wheel-
Charger still plugged in when user tries
to drive the wheelchair.
Instruct consumer to charge for 8-10 hours minimum.
with the programmer. Refer to MK
manual, part number 1114808.
high. Refer to MK
ber 1114808.
chair may be front loaded).
Unplug charger to drive wheelchair.
electronics manual, part num-
5
electronics
5
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.
Use ONLY a GEL charger for a GEL battery or
“Sealed” battery.
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.
Don’t mismatch your battery and chargers.
Part No 1118377 27 Pronto® M71™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Field Load Test
NOTE: For this procedure, refer to FIGURE 3.1 on page 29.
NOTE: The following test can also be performed through the controller of the wheelchair along
with a remote programmer. Refer to the electronics manual, part number 1114808 supplied with
each wheelchair.
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. It is located
on the joystick.
NOTE: READ these instructions CAREFULLY and the manufacturer’s instructions on the
digital voltmeter before using the digital voltmeter.
NOTE: Invacare recommends that ONLY a qualified technician perform this test.
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
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: This 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® M71™ 28 Part No 1118377
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Charge
r Port
Digital
Voltmeter
BATTERY
QUALITY
0 to 2 volts Good
2 to 2.5 volts Poor
2.5 or more Bad
FIGURE 3.1 Field Load Test
Motor Testing
NOTE: For this procedure, refer to FIGURE 3.2.
1. On the 4-pin motor connector, locate the two contacts in the red and black housings.
2. Set the digital multimeter to measure ohms (Ω).
3. Measure the resistance between the two motor contacts.
NOTE: A normal reading is between .5 to 5 ohms. A reading of O.L. (open line) or in excess of 15
ohms indicates a problem. High readings are generally caused by bad connections and/or damaged
brushes. Contact Invacare.
To Motor
4 Pin Motor
Connector
FIGURE 3.2 Motor Testing
Part No 1118377 29 Pronto® M71™
SECTION 4—SEAT ASSEMBLY
SECTION 4—SEAT ASSEMBLY
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure all attaching
hardware is tightened securely - otherwise injury or damage may result.
Before performing any maintenance, adjustment or service verify that ON/OFF
switch on the joystick is in the OFF position.
Removing/Installing the Seat Assembly
WARNING
For wheelchairs with POWER TILT ONLY or PTO PLUS, it is unnecessary to
remove the seat. Refer to the owner’s manual for information on tilting the seat.
NOTE: For this procedure, refer to FIGURE 4.1 on page 31.
NOTE: This procedure applies to ASBA and van seat assemblies.
Removing Seat
1. Disconnect the joystick cable at rear of seat. Refer to Disconnecting/Connecting the
Joystick on page 97.
2. Push down on the latch bar underneath front of seat (Detail “A” of FIGURE 4.1).
3. Rotate seat assembly backward (Detail “B” of FIGURE 4.1).
4. Slide the seat assembly forward to disengage seat from the pivot brackets located in
the rear of the wheelchair.
Installing Seat
1. Position the seat in the rear pivot brackets (Detail “B” of FIGURE 4.1).
2. Rotate seat assembly forward.
3. When seat is lowered, engage seat brackets into seat clevis pins.
WARNING
When reinstalling the seat verify that the seat brackets are engaged with the seat
clevis pins by pulling up on the latch bar - otherwise injury or damage may result.
4. Pull up on latch bar to verify that seat brackets are engaged with seat clevis pins.
Pronto® M71™ 30 Part No 1118377
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