Pronto® M91™and M94™

Pronto® M91™and M94™
Service Manual
Pronto® M91™and
M94™
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
A QUALIFIED TECHNICIAN MUST PERFORM THE INITIAL SET UP OF THIS
WHEELCHAIR. ALSO, A QUALIFIED TECHNICIAN MUST PERFORM ALL
PROCEDURES IN THE SERVICE MANUAL.
DEALERS AND QUALIFIED TECHNICIANS: DO NOT SERVICE OR OPERATE
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.
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
PERFORM THE FOLLOWING PROCEDURES:
• ADJUSTING SEAT HEIGHT
• ADJUSTING SEAT POSITION
• CHARGING THE BATTERIES
ACCESSORIES 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.
REFERENCE DOCUMENTS
Refer to the table below for part numbers of additional documents which are referenced in this manual.
MANUAL
PART NUMBER
M91 Owner’s Manual (before 1/24/06)
1110560
M91 Owner’s Manual (after 1/24/06)
1141450
M91 Owner’s Manual (M91 base w/MK6i™)
1143153
M94 Owner’s Manual
1122145
MK5™EX™and MK5 TT-EX Electronics Manual
1114808
MK5 NX™Electronics Manual
1110532
MK6i Service Manual
1143203
MK6i Field Reference Guide
1141471
MKIV™ RII Electronics
1095272
NOTE: Updated versions of this manual are available on www.invacare.com.
Pronto® M91™and M94™
2
Part No. 1125038
TABLE OF CONTENTS
TABLE OF CONTENTS
REFERENCE DOCUMENTS ................................................................. 2
SPECIAL NOTES ................................................................................ 8
LABEL LOCATIONS ......................................................................... 10
M91 Standard.............................................................................................................................................10
M91 Heavy Duty.......................................................................................................................................11
M91 with Power Tilt Only .....................................................................................................................12
M91 with Formula™ PTO Plus Seating System ................................................................................13
M94 Standard.............................................................................................................................................14
TYPICAL PRODUCT PARAMETERS .................................................. 15
Pronto M91................................................................................................................................................15
Pronto M91 with Power Tilt Only .......................................................................................................16
Pronto M91 with Formula PTO Plus ...................................................................................................17
Pronto M94................................................................................................................................................18
SECTION 1—GENERAL GUIDELINES ................................................. 19
Repair or Service Information ...............................................................................................................19
Operation Information ............................................................................................................................19
Tire Pressure .............................................................................................................................................20
Electrical .....................................................................................................................................................20
Grounding Instructions.......................................................................................................................20
Batteries......................................................................................................................................................20
SECTION 2—EMI INFORMATION ..................................................... 21
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING .................... 23
Safety Inspection Checklists...................................................................................................................23
Inspect/Adjust .......................................................................................................................................23
Troubleshooting........................................................................................................................................24
Electrical.................................................................................................................................................24
Wheels ...................................................................................................................................................24
Common ................................................................................................................................................24
SPJ+, SPJ+ w/PSS or SPJ+ w/ACC Joysticks ...................................................................................24
MPJ+, PSR+, PSF+ Joysticks or Displays .........................................................................................28
Motor/Gearbox/Brake ........................................................................................................................29
Battery ....................................................................................................................................................31
Battery Charger....................................................................................................................................31
Checking Battery Charge Level.............................................................................................................32
Field Load Test..........................................................................................................................................33
Motor Testing .......................................................................................................................................34
Part No. 1125038
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Pronto® M91™and M94™
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTION 4—SEAT ........................................................................... 35
Removing/Installing or Tilting the Seat Assembly .............................................................................35
Removing/Installing the Seat Assembly without Powered Seating Systems ...........................35
Tilting the Seat Assembly - Power Tilt Only Seating System ....................................................36
Tilting the Seat Assembly - Formula PTO Plus Seating System Only ......................................38
Adjusting the Seat Height .......................................................................................................................40
Removing/Installing the Adjustable Height Tubes.............................................................................42
ASBA Seat Service Procedures .............................................................................................................43
Removing/Installing the Seat Pan ......................................................................................................43
Changing the Seat Width/Depth ......................................................................................................44
Replacing the Seat Frame ...................................................................................................................44
Replacing the Seat Positioning Strap................................................................................................45
Removing/Installing the Back Upholstery .......................................................................................45
Removing/Installing/Changing the Back Cane Height ..................................................................45
Adjusting the Back Angle....................................................................................................................48
Adjustable ASBA Seat Service Procedures.........................................................................................50
Removing/Installing the Seat Pan ......................................................................................................50
Removing ...............................................................................................................................................50
Installing..................................................................................................................................................50
Adjusting the Seat Width ...................................................................................................................50
Adjusting the Seat Depth ...................................................................................................................52
Removing/Installing Side Rails............................................................................................................54
Removing Side Rails.............................................................................................................................54
Installing Side Rails ...............................................................................................................................55
Adjusting the Back Width ..................................................................................................................56
Adjusting the Back Angle....................................................................................................................56
Adjusting the Back Height..................................................................................................................57
Removing/Installing the Back Canes ................................................................................................57
Removing/Installing the Spreader Bar..............................................................................................58
Adjusting Spreader Bar Width..........................................................................................................59
Replacing the Seat Positioning Strap................................................................................................60
Van Seat Service Procedures .................................................................................................................61
Adjusting the Back Angle....................................................................................................................61
Adjusting the Seat Position on Van Seat Frame............................................................................61
Adjusting the Van Seat Back Depth .................................................................................................63
Removing/Installing Drive Lockout Switch Mounting Hardware and Cable (Full Recline Van Seat Only) ..64
Pronto® M91™and M94™
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Part No. 1125038
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTION 5—ARMS ......................................................................... 66
Arm Service Procedures for Van Seat.................................................................................................66
Removing/Installing Van Seat Arm ...................................................................................................66
Adjusting Van Seat Arm Width ........................................................................................................66
Adjusting Van Seat Arm Angle..........................................................................................................67
Adjusting Van Seat Arm Height (Adjustable Height Arms Only) .............................................67
Replacing Van Seat Armrest Pad Assembly ...................................................................................68
Arm Service Procedures for ASBA and Adjustable ASBA Seat.....................................................69
Removing/Installing Flip Back Armrest............................................................................................69
Adjusting the Flip Back Armrest.......................................................................................................70
SECTION 6—FRONT RIGGINGS ........................................................ 71
Installing/Removing Front Riggings .......................................................................................................71
Installing..................................................................................................................................................71
Removing ...............................................................................................................................................71
Adjusting Footrest Height ......................................................................................................................72
Model PHWH93 ..................................................................................................................................72
Model PH904A and PHAL4A............................................................................................................72
Replacing Heel Loops ..............................................................................................................................73
Raising/Lowering Elevating Front Riggings ..........................................................................................73
Adjusting/Replacing Telescoping Front Rigging Supports................................................................74
Van Style Seats......................................................................................................................................74
ASBA.......................................................................................................................................................75
Adjustable ASBA ..................................................................................................................................76
SECTION 7—FOOTBOARD ASSEMBLY .............................................. 78
Removing/Installing the Footboard Assembly....................................................................................78
Removing ...............................................................................................................................................78
Installing..................................................................................................................................................78
Adjusting the Footboard Assembly ......................................................................................................79
Angle .......................................................................................................................................................79
Depth......................................................................................................................................................80
SECTION 8—WHEELS ....................................................................... 81
Replacing the Front/Rear Casters.........................................................................................................81
Adjusting Caster Assembly.....................................................................................................................82
Removing/Installing the Front/Rear Caster Assemblies...................................................................83
Removing ...............................................................................................................................................83
Part No. 1125038
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Pronto® M91™and M94™
TABLE OF CONTENTS
TABLE OF CONTENTS
Installing..................................................................................................................................................83
Removing/Installing the Front Headtube Assembly..........................................................................83
Removing/Installing the Drive Wheel ..................................................................................................84
Removing ...............................................................................................................................................84
Installing..................................................................................................................................................84
Removing/Installing the Drive Wheel Hub .........................................................................................85
Removing ...............................................................................................................................................85
Installing..................................................................................................................................................85
Replacing the 2-Piece Wheel Rim and/or the Foam Filled or Pneumatic Tires.........................87
SECTION 9—SHROUDS/FRAME ........................................................ 88
Removing/Installing the Shrouds ...........................................................................................................88
Removing/Installing the Pivot Tube ......................................................................................................91
Removing/Installing the Walking Beam and/or SureStep Springs ..................................................91
Removing/Installing the Walking Beam Assembly, Stability Lock Assembly and/or Swing Arm.....92
Removing ...............................................................................................................................................92
Installing..................................................................................................................................................93
Removing/Installing the Traction Control Device ............................................................................95
Removing ...............................................................................................................................................95
Installing..................................................................................................................................................96
SECTION 10—MOTORS .................................................................... 97
Engaging/Disengaging Motor Release Lever .......................................................................................97
Removing/Installing the Motor ..............................................................................................................98
Inspecting/Replacing Motor Brushes ....................................................................................................99
Electro-Mechanical Parking Brake Testing....................................................................................... 101
SECTION 11—BATTERIES .............................................................. 102
Installing/Removing the Batteries....................................................................................................... 103
Installing............................................................................................................................................... 103
Removing ............................................................................................................................................ 105
Connecting/Disconnecting the Battery Wiring Harness .............................................................. 106
Connecting ......................................................................................................................................... 107
Disconnecting .................................................................................................................................... 107
Replacing the On-Board Battery Charger ....................................................................................... 109
Pronto® M91™and M94™
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Part No. 1125038
TABLE OF CONTENTS
TABLE OF CONTENTS
SECTION 12—ELECTRONICS .......................................................... 112
Disconnecting/Connecting the Joystick............................................................................................ 112
Disconnecting .................................................................................................................................... 112
Connecting ......................................................................................................................................... 113
Repositioning the Joystick.................................................................................................................... 116
ASBA or Adjustable ASBA Model................................................................................................. 116
Van Seat Model.................................................................................................................................. 116
Replacing the MKIV RII™ 80 AMP Controller............................................................................... 117
Replacing the NX-80, NK5-EX, MK5 or MK6i Controller ......................................................... 119
SECTION 13—WIRE ROUTING ....................................................... 121
MKIV Wire Routing .............................................................................................................................. 121
MK5 or MK6i Wire Routing ............................................................................................................... 122
SECTION 14—TRANSPORT READY PACKAGE (TRRO) .................... 123
About Transport Ready Packages...................................................................................................... 124
Compliance Information ...................................................................................................................... 124
Specifications...................................................................................................................................... 124
Securing the Wheelchair to the Vehicle .......................................................................................... 125
Positioning the Wheelchair in the Vehicle .................................................................................. 125
Securement Points............................................................................................................................ 126
Securing the Wheelchair ................................................................................................................. 126
Securing the Occupant ......................................................................................................................... 127
Wheelchair-Anchored Belts ........................................................................................................... 127
Vehicle-Anchored Belts ................................................................................................................... 128
Seating System ................................................................................................................................... 128
Positioning Belts ................................................................................................................................ 129
NOTES ......................................................................................... 130
LIMITED WARRANTY ................................................................... 131
Part No. 1125038
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Pronto® M91™and M94™
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
Danger indicates an imminently hazardous situation which, if not avoided, will result in
death or serious injury.
WARNING
Warning indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
CAUTION
Caution indicates a potentially hazardous situation which, if not avoided, may result in
property damage or minor injury or both.
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 (TRRO AND
TRBKTS)
Wheelchair users should NOT be transported in vehicles of any kind while in
wheelchairs.
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. Invacare recommends that these
transport brackets be used 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 Section 14-Transport Ready Package (TRRO) on page 122 for more
information about transporting the wheelchair.
TRRO AND TRBKTS WARNING
Only use the transport brackets included with TRRO and TRBKTS for the purposes
described in this manual.
Pronto® M91™and M94™
8
Part No. 1125038
SPECIAL NOTES
WARNING
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 wheelchair with optimum traction and stability when
driving forward over transitions and thresholds of up to 3-inches. The following
warnings apply specifically to the SureStep Feature.
• DO NOT use on inclines greater than 9°.
• DO NOT use on inclines with wet, slippery, icy or oily surfaces. This may include
certain painted or otherwise treated wood surfaces.
• DO NOT traverse down ramps at high speed. Doing so will reduce traction and
increase stopping distance.
• The end user’s weight can materially affect traction on sloped surfaces. Great
care should 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.
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.
POWERED SEATING SYSTEMS ONLY - This seating system has been custom
designed and will be assembled to the wheelchair base before delivery to the user.
The information contained in this manual is for maintaining and adjusting the
seating system. There are very few adjustments that can safely be made by the user.
If there is a procedure or adjustment that needs to be performed on the seating
system that is not in this manual, do not perform that procedure. Have the seating
system serviced by a qualified technician.
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. 1125038
9
Pronto® M91™and M94™
LABEL LOCATIONS
LABEL LOCATIONS
M91 Standard
Serial Number Label is located
on a plate on the inside of the
right rear frame.
Pronto® M91™and M94™
10
Part No. 1125038
LABEL LOCATIONS
M91 Heavy Duty
Serial Number Label is located
on a plate on the inside of the
right rear frame.
Part No. 1125038
11
Pronto® M91™and M94™
LABEL LOCATIONS
M91 with Power Tilt Only
Serial Number Label is located
on a plate on the inside of the
right rear frame.
Pronto® M91™and M94™
12
Part No. 1125038
LABEL LOCATIONS
M91 with Formula™ PTO Plus Seating System
M91 Standard
Only
M91 Heavy Duty
Only
Rear View of Actuator
Part No. 1125038
13
Pronto® M91™and M94™
LABEL LOCATIONS
M94 Standard
Serial Number Label is located
on a plate on the inside of the
right rear frame.
Pronto® M91™and M94™
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Part No. 1125038
Typical Product Parameters
TYPICAL PRODUCT PARAMETERS
Pronto M91
18-INCH
VAN SEAT
SEAT WIDTH RANGE:
SEAT DEPTH:
BACK HEIGHT W/O
HEADREST
SEMI RECLINE:
20-INCH
VAN SEAT
22-INCH
VAN SEAT
18 inches
20 inches
22 inches
16 to 18 inches
18 to 20 inches
20 to 22 inches
18 inches
18 inches
18 inches
35° to 115°
35° to 115°
35° to 115°
BACK ANGLE RANGE
SEMI RECLINE:
UPHOLSTERY:
SEAT-TO-FLOOR:
ASBA SEAT
ADJUSTABLE
ASBA SEAT
16 to 24 inches
16 to 20 inches
16 to 22 inches
16 to 20 inches
Standard 80° to 100°
Grey Vinyl, Grey Cloth, Tan Vinyl
Standard 85° to 105°
Black Nylon Back
221/2 to 231/2 inches
20 to 22 inches
(To Seat Pan)
(Cushion Not Compressed)
OVERALL WIDTH
(NO JOYSTICK):
257/8 inch
OVERALL HEIGHT:
36 to 491/4 inches (Semi Recline Back)
39 to 521/4 inches (Full Recline Back)
OVERALL LENGTH:
39 inches (With Footboard Folded)
3
40 /4 inches (With Footboard Extended)
DRIVE WHEELS/TIRES:
CASTERS:
FOOTRESTS/
LEGRESTS:
14 x 3-inch (Pneumatic; Flat Free tires ONLY on wheelchairs with
Heavy Duty option)
6 x 2-inch Front/Rear with Precision Sealed Bearings
Flip Up, Depth and Height Adjustable, Footboard,
Swingaway Front Rigging, Elevating Legrest
WEIGHT W/SEATING
SYSTEM AND
ACCESSORIES
199 lbs
273 lbs
W/O BATTERIES:
W/BATTERIES:
SHIPPING:
260 lbs (w/o Batteries), 310 lbs (w/Batteries)
ARMRESTS:
Adjustable Angle, Depth and Width
BATTERIES:
22NF - Quantity 2
INCLINE CAPABILITY:
9°
PERFORMANCE
SPEED
Standard:
Heavy Duty:
TURNING RADIUS:
*RANGE (VARIABLE)
Standard:
Heavy Duty:
**WEIGHT LIMITATION
Standard:
Heavy Duty:
0 to 6.4 mph
0 to 4.25 mph
191/2 inches (Front with Footboard); 211/2 inches (Rear)
22 miles
12 to 16 miles
300 lbs
400 lbs
NOTE: Based on 18‐inch deep Van seat.
*NOTE: Values for range are calculated for maximum chair weight rating using largest batteries applicable (22NF), per test procedures described in ANSI/RESNA WC/VOL2‐1998 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. Part No. 1125038
15
Pronto® M91™and M94™
Typical Product Parameters
Pronto M91 with Power Tilt Only
SEAT WIDTH RANGE:
16 to 22 inches
SEAT DEPTH RANGE (1-INCH INCREMENTS):
16 to 22 inches
BACK HEIGHT RANGE:
16 to 24 inches
BACK ANGLE RANGE (ASBA):
90° to 120° in 6¼° increments
*SEAT-TO-FLOOR HEIGHT (ADJUSTABLE):
20 to 21 inches ± ½ inch increments
OVERALL WIDTH
26 inches
27 inches
WITHOUT JOYSTICK:
WITH JOYSTICK AND TRSS:
OVERALL HEIGHT:
37 to 45 inches
OVERALL LENGTH WITH FRONT RIGGINGS:
44 inches
TILT RANGE
0 to 45°
5 to 50°
0° SEAT PAN ANGLE:
5° SEAT PAN ANGLE:
TURNING RADIUS WITH FRONT RIGGINGS:
27½ inches
SEAT CUSHION:
Cushion (Optional)
WEIGHT OF PTO:
25 lbs
ARMRESTS:
Adjustable Angle, Height and Depth
WEIGHT LIMITATION OF M91 WITH PTO
Up to 250 lbs
M91 STANDARD:
*NOTE: The seat‐to‐floor heights are based on 18‐inch deep seat with 0° (±1°) seat pan angle and pneumatic tires or flat free inserts. Seat‐to‐floor height measured from the front edge of seat to floor. All heights are measured with properly inflated new tires. These heights can vary ±¼‐inch due to tire wear.
WARNING
If the seating system is mounted onto a power wheelchair that has a weight
limitation greater than that of the seating system, the weight limitation is
maintained at the seating system’s weight limitation. (Example: The M91 Standard
wheelchair has a 300 lb weight limitation, so the seating system still has a weight
limitation of 250 lbs).
Pronto® M91™and M94™
16
Part No. 1125038
Typical Product Parameters
Pronto M91 with Formula PTO Plus
ASBA SEAT
ADJUSTABLE ASBA SEAT
SEAT WIDTH RANGE:
16 to 22 inches
SEAT DEPTH RANGE
(1-INCH INCREMENTS):
16 to 22 inches
BACK HEIGHT RANGE:
16 to 24 inches
BACK ANGLE RANGE (ASBA):
80° to 100° in 5° increments
*SEAT-TO-FLOOR HEIGHT (ADJUSTABLE):
85° to 105° in 5° increments
18 to 20 inches in ½ inch increments
OVERALL WIDTH
26 inches
27 inches
WITHOUT JOYSTICK:
WITH JOYSTICK AND TRSS:
OVERALL HEIGHT:
37 to 45 inches
OVERALL LENGTH WITH
FRONT RIGGINGS:
44 inches
TILT RANGE
0 to 55°
5 to 60°
0° SEAT PAN ANGLE:
5° SEAT PAN ANGLE:
TURNING RADIUS WITH FRONT RIGGINGS:
27½ inches
SEAT CUSHION:
Cushion (Optional)
WEIGHT OF FORMULA PTO PLUS:
25 lbs
ARMRESTS:
Adjustable Angle, Height and Depth
WEIGHT LIMITATION OF M91 WITH
FORMULA PTO PLUS
Up to 275 lbs
Up to 375 lbs
M91 STANDARD:
M91 HEAVY DUTY OPTION:
*NOTE: The seat‐to‐floor heights are based on 18‐inch deep seat with 0° (±1°) seat pan angle and pneumatic tires or flat free inserts. Seat‐to‐floor height measured from the front edge of seat to floor. All heights are measured with properly inflated new tires. These heights can vary ±¼‐inch.
WARNING
If the seating system is mounted onto a power wheelchair that has a weight limitation greater than that of the seating system, the weight limitation is maintained at
the seating system’s weight limitation. (Example: The M91 Standard wheelchair has
a 300 lb weight limitation, so the seating system still has a weight limitation of 275
lbs).
Part No. 1125038
17
Pronto® M91™and M94™
Typical Product Parameters
Pronto M94
18-INCH
20-INCH
VAN SEAT VAN SEAT
SEAT WIDTH RANGE:
SEAT DEPTH:
BACK HEIGHT W/O
HEADREST:
SEMI RECLINE:
22-INCH
24-INCH
VAN SEAT VAN SEAT
ASBA SEAT
18 inches
20 inches
22 inches
24 inches
18 to 24 inches
16 to 18 inches
18 to 20 inches
20 to 22 inches
20 to 22 inches
16 to 22 inches
18 inches
18 inches
18 inches
18 inches
16 to 20 inches
35° to 115°
35° to 115°
35° to 115°
35° to 115°
Standard
80° to 100°
BACK ANGLE RANGE:
SEMI RECLINE:
UPHOLSTERY:
Grey Vinyl
Black Nylon Back
21 to 24 inches
(Cushion Not Compressed)
19 to 22 inches
(To Seat Pan)
WITH SEAT PAN:
SEAT-TO-FLOOR:
OVERALL WIDTH
(NO JOYSTICK):
27 to 29 inches
OVERALL HEIGHT:
31 inches (Folded)
54 inches (Upright)
OVERALL LENGTH:
35 inches (With Footboard Folded)
43 inches (With Footboard Extended)
DRIVE WHEELS/TIRES:
14 x 3-inch (Flat Free)
CASTER W/PRECISION
SEALED BEARINGS:
6 x 2-inch Front/Rear
FOOTRESTS/
LEGRESTS:
Flip Up, Depth and Height Adjustable, Footboard,
Swingaway Front Rigging, Elevating Legrest
WEIGHT W/ SEATING
SYSTEM AND
ACCESSORIES:
216 lbs
290 lbs
W/O BATTERIES:
W/BATTERIES:
SHIPPING:
260 lbs (w/o Batteries), 310 lbs (w/Batteries)
ARMRESTS:
Adjustable Angle, Height and Width, Desk and Full Length
BATTERIES:
22NF - Quantity 2
PERFORMANCE:
0 to 4.5 mph
19½ inches
10 to 15 miles
500 lbs
SPEED:
TURNING RADIUS:
*RANGE (VARIABLE):
**WEIGHT LIMITATION:
NOTE: Based on 24‐inch wide Van seat.
*NOTE: Values for range are calculated for maximum chair weight rating using largest batteries applicable (22NF), per test procedures described in ANSI/RESNA WC/VOL2‐1998 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. Pronto® M91™and M94™
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Part No. 1125038
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.
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.
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
Ensure that driving surfaces, ramps, lifts, elevators, etc., are capable of supporting combined weight of user and wheelchair (for 500 lbs user, the combined weight could be up to 800 lbs).
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.
The arms on the M94 wheelchair are designed as armrests ONLY. The arms are not designed to support the full weight of the wheelchair user. Part No. 1125038
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Pronto® M91™and M94™
SECTION 1—GENERAL GUIDELINES
Tire Pressure
DO NOT release the wheelchair from service unless it has the proper tire pressure (PSI). 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 two‐
prong wall receptacle is encountered, it is the personal responsibility and obligation of the customer to contact a qualified electrician and have the two‐prong receptacle replaced with a properly grounded three‐prong wall receptacle in accordance with the National Electrical Code. If you must use an extension cord, use ONLY a three‐wire extension cord having the same or higher electrical rating as the device being connected. In addition, Invacare has placed RED/ORANGE WARNING TAGS on some equipment. DO NOT remove these tags.
Three (3) prong to two (2) prong adapters should not be used. Use of three (3) prong adapters can result in improper grounding and present a shock hazard to the user.
Batteries
The warranty and performance specifications contained in this manual are based on the use of deep cycle gel cell batteries. Invacare strongly recommends their use as the power source for this unit.
Carefully read battery/battery charger information prior to installing, servicing or operating your wheelchair.
Pronto® M91™and M94™
20
Part No. 1125038
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) Handheld Portable transceivers (transmitters receivers with the antenna
mounted directly on the transmitting unit. Examples include: citizens band (CB)
radios, "walkie talkie", security, fire and police transceivers, cellular telephones,
and other personal communication devices).
NOTE: Some cellular telephones and similar devices transmit signals while they are ON,
even when not being used.
2) Medium-range mobile transceivers, such as those used in police cars, fire trucks,
ambulances and taxis. These usually have the antenna mounted on the outside of
the vehicle; and
3) Long-range transmitters and transceivers, such as commercial broadcast
transmitters (radio and TV broadcast antenna towers) and amateur (HAM)
radios.
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,
AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to
your powered wheelchair.
Part No. 1125038
21
Pronto® M91™and M94™
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 this 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® M91™and M94™
22
Part No. 1125038
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 motor brushes and gearbox coupling.
❑ Check that all labels are present and legible. Replace if necessary.
❑ Inspect electrical components for signs of corrosion. Replace if corroded or damaged.
❑ Ensure casters are free of debris.
Part No. 1125038
23
Pronto® M91™and M94™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Troubleshooting
Electrical
NOTE: For additional troubleshooting information and explanation of error codes, refer to the electronics manual supplied with each wheelchair.
X
X
X
X
X
X
X
SQUEAKS AND
RATTLES
SLUGGISH TURN/
PERFORMANCE
X
CASTERS
FLUTTER
WHEELCHAIR VEERS
LEFT/RIGHT
Wheels
SOLUTIONS
If pneumatic, check tires for correct and equal pressure.
X
Check for loose stem nuts/bolts.
Check that casters contact ground at the same time.
Common
SYMPTOM
E28 Error code
No LED’s on DPJ™/SPJ™
Joystick
PROBABLE CAUSE
SOLUTIONS
Charger still plugged in when
user tries to drive the wheelchair.
Unplug charger to drive wheelchair.
Manual recliner, Power tilt and/
or recline is in reclined position
and drive lockout is engaged
To disengage drive lockout, return
seat to upright position.
Batteries discharged.
Fuse Open
Loose Battery Terminal
Plug connections back together, and
check for damaged wiring.
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.
Pronto® M91™and M94™
24
Part No. 1125038
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
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.
Joystick is in
programming, inhibit and/
or charging mode.
The steady LEDs indicate
the current state of the
battery charge.
All LEDs are flashing slowly. Joystick has detected Out- Release the joystick back
to Neutral.
of-Neutral-at-Power-Up
mode.
NUMBER OF FLASHES
DIAGNOSTICS CODE
ERROR CODE
DESCRIPTION
SUB CODE*
DETAILS OF
ERROR CODE
POSSIBLE
SOLUTION
Service Indicator Light Diagnostics
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 charging the batteries.
Batteries may require replacing.
Part No. 1125038
25
Pronto® M91™and M94™
DIAGNOSTICS CODE
ERROR CODE
DESCRIPTION
SUB CODE*
DETAILS OF
ERROR CODE
3
E03
Left Motor Fault
00
Left Motor Short Circuit
4
5
E04
E05
Right Motor Fault
Left Park Brake
Fault
Pronto® M91™and M94™
01
Left Motor Open Circuit
02
Left Motor Connection Fault
B-
03
Motor Terminal Connected
to B+
04
Left Motor Voltage Fault
05
Left Motor Bridge Fault
06
Too Many Hardware Current
Limit Events
07
Current Offset Out of Range
08
Hardware Current Limit Fault
00
Right Motor Short Circuit
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
00
Left Park Brake Drive-Time
Test Failed
01
Left Park Brake Output
Enabled When Wheelchair
Idle
02
Left Park Brake Output Did
not Enable When Entering
Drive Mode
03
Left Park Brake fault during
power-up testing
04
Left park brake feedback low
during drive (park brake
short)
26
POSSIBLE
SOLUTION
NUMBER OF FLASHES
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Check the left motor, connections and
motor cable.
Check the right motor, connections and
motor cable.
Check the left park brake connections and
cable.
Part No. 1125038
8
9
E07
E08
E09
POSSIBLE
SOLUTION
7
DETAILS OF
ERROR CODE
E06
00
Right Park Brake Drive-Time
Test Failed
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)
00
Local SR Fault
(CPU, EEPROM, etc.)
01
Joystick fault at the remote
02
Speed pot fault at the remote
00
Controller fault
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
09
Relay fault or precharge fault
10
Bridge fault or disable all fault
11
Electronics fault: Thermistor
12
Calibration setting fault
Communications
Fault
00
Remote connection lost
01
Low communication mode
Right Park Brake
Fault
Remote Fault
Controller Fault
SUB CODE*
DIAGNOSTICS CODE
6
ERROR CODE
DESCRIPTION
NUMBER OF FLASHES
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Check the communications bus,
connections and wiring. Replace the
remote.
Check connections and wiring. Replace
power module.
Check connections and wiring. Replace
Bus cable.
10
E10
General Fault
00
General fault
Check all connections and wiring. Contact
Invacare Technical Service.
11
E11
Incompatible/
incorrect Remote
00
Incompatible/incorrect
Remote
Wrong type of remote connected. Ensure
the branding of the joystick matches that
of controller unit.
Part No. 1125038
27
Pronto® M91™and M94™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
MPJ+, PSR+, PSF+ Joysticks or Displays
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
SPM L Park Brake Fault or
SPM R Park Brake Fault displays
Motor lock levers disengaged
(Error code E9 or E10).
Engage motor lock levers.
CHARGER PLUGGED IN displays.
Battery charger connected
(Error code E28).
Unplug battery charger from the
wheelchair.
SPM Battery Fault displays and
Batteries need to be charged
(Error code E14).
Charge batteries. If batteries fail to
charge properly, check battery charger
or replace batteries. Refer to
Replacing the On-Board Battery
Charger on page 109.
JOYSTICK TIMEOUT displays
Joystick or input device is
disconnected (Error code 32).
Turn Off power, reconnect the
joystick of input device and turn
power On.
JS REV TOO LARGE
JS FWD TOO LARGE
JS LFT TOO LARGE or
JS RGT TOO LARGE
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).
Replace joystick or input device.
NEUTRAL TESTING displays.
The joystick neutral test has
failed (Error code E18).
Release the joystick and try to get the
joystick back into the center-most
position.
BAD JOYSTICK CAL VALUES
The joystick calibration values
are outside of the expected
range (Error code E19).
Recalibrate the joystick (joystick
throw procedure).
SPM NOT CONNECTED
The MPJ or Display module is
not communicating with the
control module (Error code
E200).
Check the connections between the
joystick or display and the controller.
Turn the power Off and then back On.
Replace the controller if necessary.
SPM Communications Fault
The controller has determined
a fault during a previous turnoff process (Error code E41).
Turn the wheelchair Off and back On.
The Proportional or Digital
Attendant control is active and
can be used to drive the chair
(Error code W05).
This is normal behavior.
Battery failure.
Have batteries checked for shorted
cell. Replace if necessary.
Electrical malfunction.
Contact Dealer/Invacare for service.
and wheelchair does not drive.
the wheelchair does not drive.
and the wheelchair does not drive.
displays and the wheelchair does not
drive.
displays and the wheelchair does not
drive.
displays and the wheelchair drives
slowly.
ATTENDANT ACTIVE and
displays.
Batteries draw excessive current
when charging.
Pronto® M91™and M94™
28
Part No. 1125038
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Battery failure.
Check batteries for shorted cell.
Replace if necessary.
Malfunctioning battery charger.
Contact Dealer/Invacare for Service.
Electrical malfunction.
Contact Dealer/Invacare for Service.
Battery indicator flashes the charge
level is low - too soon after being
recharged.
Batteries not charged.
Have charger checked.
Weak batteries.
Replace batteries if necessary.
Contact Dealer/Invacare for Service.
Motor “chatters” or runs irregular.
Electrical malfunction.
Contact Dealer/Invacare for Service.
Joystick erratic or does not respond
as desired.
Damaged motor coupling.
Contact Dealer/Invacare for Service.
Electrical malfunction.
Contact Dealer/Invacare for Service.
Controller programmed
improperly.
Contact Dealer/Invacare to have
controller reprogrammed.
Wheelchair does not respond to
commands.
Poor battery terminal
connection.
Have terminals cleaned.
Power indicator Off - even after
recharging.
Electrical malfunction.
Contact Dealer/Invacare for Service.
Battery indicator flashes the charge
level is low - immediately after
recharge.
Motor/Gearbox/Brake
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Bad coupler between motor and
gearbox or bad bearings.
Replace coupler.
If bearings are bad, replace motor.
Raised commutator plate inside of
motor.
Ohm out motor and replace motor if high reading
is present. Normal reading is 0.2-5 Ohms.
Bad gearbox.
Bad coupler between motor and
gearbox or bad bearings. Bad gears.
Replace gearbox.
Replace coupler.
If bearings are bad, replace motor.
Motors stall and
start up again.
Current rollback.
Stop driving and allow electronics cool.
Wheelchair will not
drive with power
on (E09 or E10).
Check motor locks.
Engage motor locks to drive wheelchair.
Damaged connector or worn
brushes.
Bad motor or gear box.
Ohm out motors. Check brushes and replace
brushes if necessary. Replace motor if high reading
is present. Normal reading is 0-5 Ohms.
Controller malfunction.
Check for error codes with programmer. Refer to
electronics manual, part number 1114808.
Motor makes a
clicking noise.
Grinding noise or
motor is locking up.
Motor chatters or
runs erratically, or
only one motor
turns.
Part No. 1125038
29
Pronto® M91™and M94™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Wheelchair veers
to the left or right
when driving on
level surface.
Uneven tire pressure.
Motors out of balance.
Inflate tires.
Replace tires if worn.
Use programmer to balance motors.
E09/E10 error code
will not go away.
Bad motor connection.
Bad brake coil.
Check all connections. Ohm out each brake coil.
Normal reading is 45-50 Ohms.
Bad seal around drive shaft.
Loose hardware.
If seal is bad, replace gearbox. Remove motor
brushes and inspect for grease contamination.
Replace motor if contamination is found.
If loose hardware is found retighten hardware.
Excessive clicking
coming from
motor/gearbox.
Bad bearing in motor or gearbox.
Replace motor or gearbox.
Loose wheel hardware.
Tighten hardware, (use removable Loctite™ on
hardware). Follow torque settings in this manual.
Gearbox shaft
movement or bent
shaft.
Rough driving.
Replace gearbox.
Poor connection or worn brushes.
Check Anderson connectors. Check brushes and
replace if necessary.
Battery voltage is too low.
Bad connection.
Brake disengaged.
Check batteries and recharge if necessary.
Check connector
Engage brake
Heavy load on the motors forcing
controller into the current rollback
mode.
Leave power ON and allow controller to count
down, and recharge the wheelchair overnight with
power ON.
Blown fuse in battery wiring
harness.
Replace battery wiring harness.
Damaged Motor
Replace brushes if necessary, or replace motor if
internal damage is determined.
Gearbox is leaking
fluid.
Motor stutters.
Motor fails to start
after initial
installation.
Motor is running
then fails to restart
when stopped.
Ohm out motor to check for possible internal
damage (worn out brushes may be possible).
Motor runs but
loses power.
Wheelchair loses all
power while
driving.
Controller power stage board or
relays may be damaged.
Replace controller or send to Invacare for repair.
Controller senses heavy load and
has entered the current rollback
mode.
Stop driving and allow electronics cool.
Leave power ON and allow controller to count
down, and recharge the wheelchair overnight with
power ON.
Bad connection on wheelchair.
Turn power “OFF”, wait 10 seconds and turn
power back “ON”.
Check joystick connection.
Check battery connection and fuses.
Pronto® M91™and M94™
30
Part No. 1125038
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Battery
SYMPTOM
Batteries won’t
charge.
Short Charge Time
PROBABLE CAUSE
SOLUTIONS
Blown battery fuse or damaged cables.
Check cables for damage or replace battery wiring
harness.
Replace batteries
Batteries sat discharged too long.
One or both batteries may be bad
(if batteries charge up to soon).
Check each battery and replace if needed.
Bad connection or blown fuse. Check
Joystick connection.
Check all connections and housings for damage. If
you have a blown fuse, a new battery wiring
harness must be purchased.
Check battery voltage and replace if necessary.
No power to
wheelchair motors. Batteries are dead.
Loose battery connections
Check battery cable connections, may have
vibrated loose when driving on rough terrain.
Corroded battery Possible water, salt, or urine
wiring connections. damage.
Replace battery wiring harness.
E14 Error code.
Recharge or replace battery.
Low Voltage
Battery Charger
SYMPTOM
No LED’s on
Charger
Batteries won’t
charge.
Part No. 1125038
PROBABLE CAUSE
SOLUTIONS
Charger not plugged into outlet, or
disconnected from wiring harness on
wheelchair.
Make sure the charger is plugged into the outlet
and check the wiring on the 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
damaged or send in for repair.
Charger LED’s burnt out.
Send charger to Invacare for repair.
Charger may have internal fuse that is
blown.
Remove charger cover and check for fuses. if fuses
are present Ohm out fuses and replace if
necessary.
Blown battery fuse in wiring harness,
or charger.
Check battery wiring harness fuse on the
wheelchair
Check fuse in the 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.
Check for damage and replace if necessary, or
send in for repair.
Charger may have internal damage.
Charge batteries with known good charger.
Battery voltage too low for charger to
start charging cycle.
Replace batteries.
31
Pronto® M91™and M94™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOM
Batteries have
short driving range
during a single
charge. Battery
Gauge falls off
faster than normal.
E28 Error code.
PROBABLE CAUSE
SOLUTIONS
Consumer not charging batteries long
enough.
Instruct consumer to charge for 8-10 hours
minimum.
Batteries may be weak.
Perform load test or check “Battery Quality Menu”
with the programmer. Refer to MK5 electronics
manual, part number 1114808.
Check programming settings.
Torque setting and power level setting may be too
high. Refer to MK5 electronics manual, part
number 1114808.
Heavy load on motors.
Chairs weight distribution may be offset
(wheelchair may be front loaded).
Charger still plugged in when user tries
to drive the wheelchair.
Unplug charger to drive wheelchair.
Checking Battery Charge Level
NOTE: 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.
Don’t perform any installation or maintenance without
first reading this manual.
Move the wheelchair to a work area before opening
battery box or installing service batteries.
Don’t perform installation or maintenance of batteries
in an area that could be damaged by battery spills.
Recharge as frequently as possible to maintain a high
charge level and extend battery life.
Don’t make it a habit to discharge batteries to the
lowest level.
Follow recommendations in this manual when
selecting a battery or charger.
Don’t use randomly chosen batteries or chargers.
Fully charge new batteries before using.
Don’t put new batteries into service before charging.
Use a carrying strap to remove, move or install a
battery.
Don’t tip or tilt batteries.
Push battery clamps on the terminals. Spread clamps
wider if necessary.
Don’t tap on clamps and terminals with tools.
Use ONLY a GEL charger for a GEL battery or
“Sealed” battery.
Don’t mismatch your battery and chargers.
Pronto® M91™and M94™
32
Part No. 1125038
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Field Load Test
NOTE: For this procedure, refer to FIGURE 3.1 on page 34.
NOTE: The following test can also be performed through the controller of the wheelchair along with a remote programmer. Refer to the electronics manual 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 (2.5 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 on page 34. 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 occur.
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 to 4 seconds, to determine the voltage under load.
NOTE: If the voltage drops more than 2.5 volts from a pair of fully charged batteries while under load, they should be replaced regardless of the unloaded voltages.
Part No. 1125038
33
Pronto® M91™and M94™
SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
Charger 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 0.2 and 5 ohms. A reading of 0 ohms or in excess of 15 ohms indicates a problem. High readings are generally caused by bad connections and/or damaged brushes. Contact Invacare.
MKIV 4-pin Motor Connector
MK5 & MK6i 4-pin Motor Connector
Cap
Cap
Motor
Motor
4 Pin Motor
Connector
Black
Black
Red
Black
4 Pin Motor Connector
FIGURE 3.2 Motor Testing
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Part No. 1125038
SECTION 4—SEAT
SECTION 4—SEAT
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that 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.
The following acronyms are used throughout this manual:
ACRONYM
ADJUSTABLE ASBA (ADJ ASBA)
DEFINITION
Adjustable Width, Depth, Seat and Back Angle seat frame.
Removing/Installing or Tilting the Seat Assembly
Removing/Installing the Seat Assembly without Powered Seating Systems
NOTE: For this procedure, refer to FIGURE 4.1 on page 36.
Removing
1. Disconnect the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
2. M91 with Full Recline Back and Drive Lockout Switch ONLY ‐ Perform the following to disconnect the drive lock out switch:
A. Open rear shroud by turning knob 90° until detent is felt, slide rear shroud towards rear casters and tilt top edge away from wheelchair.
B. Disconnect the drive lockout switch cable located next to the charger (Detail “A” of FIGURE 4.1).
C. Close the rear shroud by tilting the top edge towards the wheelchair, sliding the rear shroud towards the knob, and turning knob 90° until detent is felt.
3. Push down on the latch bar underneath front of seat.
4. Tilt front edge of seat up.
5. Slide the seat assembly forward to disengage seat from the pivot brackets located in the rear.
Installing
1. Position the seat in the rear pivot brackets.
2. Tilt front edge of seat down.
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.
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Pronto® M91™and M94™
SECTION 4—SEAT
4. Pull up on latch bar to verify that brackets are engaged with seat clevis pins.
5. M91 with Full Recline Back and Drive Lockout Switch ONLY ‐ Perform the following to connect the drive lockout switch:
A. Open rear shroud by turning knob 90° until detent is felt, slide rear shroud towards rear casters and tilt top edge away from wheelchair.
B. Connect the drive lockout switch cable located next to the charger (Detail “A” of FIGURE 4.1).
C. Close the rear shroud by tilting the top edge towards the wheelchair, sliding the rear shroud towards the knob, and turning knob 90° until detent is felt.
6. Connect the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
DETAIL “A”
NOTE: Van Seat model shown. ASBA seat removes/installs in the same way.
NOTE: Rear shroud not shown for clarity.
Drive
Drive Lockout
Lockout
Switch Cable
Rear Pivot (To Wheelchair) Switch Cable
(To Seat)
Brackets
Seat
Clevis
Pins
Latch Bar
(located under the
front of the seat)
Knob
FIGURE 4.1 Removing/Installing or Tilting the Seat Assembly
Tilting the Seat Assembly - Power Tilt Only Seating System
WARNING
Make sure power to the wheelchair is OFF before performing this procedure.
NEVER leave the seat assembly in the UP/OPEN position unless necessary to
perform a procedure on the wheelchair - otherwise injury or damage may result.
After ANY adjustments, repair or service and BEFORE use, make sure all attaching
hardware is tightened securely - otherwise injury or damage may result.
NOTE: For this procedure, refer to FIGURE 4.2 on page 38.
NOTE: Removing the seat is not necessary to access the battery compartment on wheelchairs equipped with a power tilt only seating system. The seat assembly with power tilt only tilts back and is propped in place to provide access to the batteries and underside of the seat.
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Part No. 1125038
SECTION 4—SEAT
Tilting the Seat Assembly Back
1. Place the wheelchair in a well ventilated area where work can be performed without risking damage to carpeting or floor covering.
2. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick cable.
3. Remove front rigging. Refer to ownerʹs manual shipped with wheelchair.
4. Remove the two detent pins securing the power tilt only frame to the front seat posts. 5. Firmly grasp the front edge of the seat assembly, slowly tilt the seat assembly BACK into the up/open position.
6. Remove prop rod from the clip located on the power tilt only frame and engage the prop rod end in to the support bracket. 7. Gently allow weight of seat assembly to be supported by the prop rod.
NOTE: Leave the seat assembly in the up/open position only while performing any necessary procedures. Always lower the seat assembly to the down/closed position when not servicing the wheelchair.
Tilting the Seat Assembly Forward
1. Using one hand, firmly grasp the front edge of the seat assembly and lift until seat assembly is no longer supported by the prop rod.
2. Disengage prop rod from the support bracket and secure into clip.
3. Using both hands, slowly tilt the seat assembly forward into the down/closed position.
WARNING
Ensure the two detent pins are fully engaged and the power tilt only frame is
securely locked in place before use - otherwise injury or damage may result.
4. Insert the two detent pins through both the power tilt only frame and the two front seat posts.
Part No. 1125038
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Pronto® M91™and M94™
SECTION 4—SEAT
Power Tilt Only Frame
Detent Pin
Prop Rod
Detent Pin
Clip
Front Seat Post
(Mounting Hole)
Front Seat Post
(Mounting Hole)
FIGURE 4.2 Tilting the Seat Assembly - Power Tilt Only Seating System
Tilting the Seat Assembly - Formula PTO Plus Seating System Only
WARNING
Make sure power to the wheelchair is OFF before performing this procedure.
Never leave the seat assembly in the UP/OPEN position unless necessary to
perform a procedure on the wheelchair - otherwise injury or damage may result.
After ANY adjustments, repair or service and before use, make sure all attaching
hardware is tightened securely - otherwise injury or damage may result.
NOTE: For this procedure, refer to FIGURE 4.3 on page 40.
NOTE: This procedure is for M91 wheelchairs with the Formula PTO Plus Seating System ONLY.
NOTE: Removing the seat is not necessary to access the battery compartment on wheelchairs equipped with a Formula PTO Plus seating system. The seat assembly with the Formula PTO Plus seating system tilts back and props into place to provide access to the batteries and the underside of the seat.
Tilting the Seat Assembly Back
1. Place the wheelchair in a well ventilated area where work can be performed without risking damage to carpeting or floor covering.
2. Tilt seat back 20° to 25°. Refer to owner’s manual shipped with wheelchair.
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Part No. 1125038
SECTION 4—SEAT
3. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick cable.
4. Engage the motor release levers. Refer to Engaging/Disengaging Motor Release Lever on page 97.
5. Remove front rigging. Refer to Installing/Removing Front Riggings on page 71.
6. Remove the two screws and washers securing the Formula PTO Plus frame to the front seat posts.
7. Firmly grasp the front edge of the seat assembly, slowly tilt the seat assembly back into the UP/OPEN position.
8. Remove prop rod from the clip located on the Formula PTO Plus frame and engage the prop rod end into the front seat post as shown in FIGURE 4.3 on page 40.
9. Gently allow weight of seat assembly to be supported by the prop rod.
NOTE: Leave the seat assembly in the up/open position only while performing any necessary procedures. Always lower the seat assembly to the down/closed position when not servicing the wheelchair and ensure it is in the locked position before using.
Tilting the Seat Assembly Forward
1. Using one hand, firmly grasp the front edge of the seat assembly and lift until seat assembly is no longer supported by the prop rod.
2. Disengage the prop rod from the front seat post and secure into clip.
3. Using both hands, slowly tilt the seat assembly forward into the down/closed position.
WARNING
Ensure the two screws are fully engaged and the Formula PTO Plus frame is
securely locked in place before use - otherwise injury or damage may result.
4. Insert the two screws through the washers, the Formula PTO Plus frame and the two front seat posts.
Part No. 1125038
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Pronto® M91™and M94™
SECTION 4—SEAT
Mounting Hole
Clip
Formula PTO Plus Frame
Front Seat Post
Screw
Prop Rod
Washer
FIGURE 4.3 Tilting the Seat Assembly - Formula PTO Plus Seating System Only
Adjusting the Seat Height
WARNING
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 this procedure.
NOTE: For this procedure, refer to FIGURE 4.4 on page 41.
NOTE: The seat can be adjusted to five height positions in ½‐inch increments.
1. Remove the seat. Refer to Removing/Installing the Seat Assembly without Powered Seating Systems on page 35.
2. Remove the mounting screw and locknut that secure the adjustable height tube to the support tube.
3. Adjust tube to desired mounting position. Refer to the table in FIGURE 4.4 on page 41 for available mounting positions.
4. Reinstall mounting screw and locknut (FIGURE 4.4). Securely tighten.
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Part No. 1125038
SECTION 4—SEAT
5. Repeat STEPS 2‐4 for the three remaining adjustable height tubes.
WARNING
When reinstalling the seat verify that the seat brackets are engaged with the seat
clevis pins by pulling UP on the latch bar.
6. Reinstall the seat. Refer to Removing/Installing the Seat Assembly without Powered Seating Systems on page 35.
ADJUSTING THE SEAT HEIGHT
AVAILABLE MOUNTING HOLES FOR
FRONT ADJUSTABLE HEIGHT TUBE
CHAIR IS EQUIPPED WITH
A
B
C
D
E
Mounted in hole A
N/A**
9
9
9
9
Mounted in hole B
N/A*
N/A*
9
9
9
Mounted in hole C
N/A*
N/A*
9
9
9
Mounted in hole D
N/A*
N/A*
N/A*
9
9
Mounted in hole E
N/A*
N/A*
N/A*
N/A*
9
VAN SEAT WITH FOOTBOARD
REAR ADJUSTABLE HEIGHT TUBE
*NOTE: This mounting hole combination would result in a forward seat dump. Forward seat dump is where the rear of the seat is higher than the front of the seat. The seat should never be adjusted to a position that results in a forward seat dump.
**NOTE: This mounting hole combination cannot be used because it would cause the front riggings of the wheelchair to interfere with other components of the chair.
Rear Adjustable
Height Tube
Mounting
Hole
Front Adjustable
Height Tube
Mounting
Hole
Locknut
A
A
B
B
C
C
D
D
E
E
Support
Tube
Mounting
Screws
NOTE: M94 shown.
FIGURE 4.4 Adjusting the Seat Height
Part No. 1125038
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Pronto® M91™and M94™
SECTION 4—SEAT
Removing/Installing the Adjustable Height Tubes
NOTE: For this procedure, refer to FIGURE 4.5.
NOTE: Reverse this procedure to install the adjustable height tubes.
1. Remove the top shroud from the wheelchair. Refer to Removing/Installing the Shrouds on page 88.
2. Remove the mounting screw and locknut securing the front adjustable height tube to the front support tube. 3. Remove the front adjustable height tube from the front support tube.
4. Remove the mounting screw and locknut securing the rear adjustable height tube to the rear support tube.
5. Remove the rear adjustable height tube from the rear support tube.
Rear Support Tube
Mounting Screw
Rear Adjustable Height Tube
Locknut
Locknut
Front Adjustable Height Tube
Front Support Tube
Mounting Screw
NOTE: M94 shown.
FIGURE 4.5 Removing/Installing the Adjustable Height Tubes
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Part No. 1125038
SECTION 4—SEAT
ASBA Seat Service Procedures
Removing/Installing the Seat Pan
NOTE: For this procedure, refer to FIGURE 4.6.
NOTE: Take note of the position and orientation of the mounting hardware, seat positioning straps and quick release pin tabs for installation of the seat pan.
NOTE: Reverse this procedure to install the seat pan. Torque locknuts to 75‐inch‐lbs.
1. Perform one of the following:
• Remove seating system. Refer to manufacturer’s seating system installation instructions.
• Remove cushion by pulling UP to release hook and loop strips. Remove cushion from seat pan.
2. Remove the two rear mounting screws, quick release pin tabs, spacers and locknuts that secure the seat pan and seat positioning straps to the seat frame.
NOTE: The two front mounting screws, spacers and locknuts also secure the front rigging support tubes to the seat frame.
3. Remove the four mounting screws, locknuts and four spacers securing the seat pan to the seat frame (FIGURE 4.6).
4. Remove the seat pan from the seat frame.
Seat Pan
Mounting Screws
Seat
Positioning
Strap
Seat Frame
Tab
Spacer
Locknut
Locknut
Quick Release Pin
FIGURE 4.6 Removing/Installing the Seat Pan
Part No. 1125038
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Pronto® M91™and M94™
SECTION 4—SEAT
Changing the Seat Width/Depth
NOTE: The seat frame width and depth are not adjustable. A new seat frame must be ordered to change seat depth and/or width. Refer to Replacing the Seat Frame on page 44.
Replacing the Seat Frame
NOTE: For this procedure, refer to FIGURE 4.7.
1. Remove the front riggings from the seat frame. Refer to Installing/Removing Front Riggings on page 71.
2. Remove the seat from the wheelchair. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
3. Remove the seat pan. Refer to Removing/Installing the Seat Pan on page 43.
4. Remove the four mounting screws and locknuts securing the seat frame to the seat frame adapter.
5. Remove the seat frame from the seat frame adapter.
6. Discard the existing seat frame.
7. Align the four mounting holes of the new seat frame with the correct mounting position on the seat frame adapter (Detail “A” of FIGURE 4.7).
8. Using four existing mounting screws and four new locknuts, secure the seat frame to the seat frame adapter.
9. Install the seat pan. Refer to Removing/Installing the Seat Pan on page 43.
10. Install the seat onto the wheelchair. Refer to Removing/Installing the Seat Assembly without Powered Seating Systems on page 35.
Mounting Screws
Seat
Frame
Seat
Frame
Adapter
DETAIL “A” - SEAT FRAME MOUNTING
POSITIONS
Mounting Screws
Locknuts
16 Inches
17 Inches
18 Inches
19 Inches
20 Inches
21 and 22 Inches
16 Inches
17 Inches
18 Inches
19 Inches
20 Inches
21 and 22 Inches
Locknuts
Front of Seat Frame
Adapter
Rear of Seat Frame
Adapter
NOTE: Measurements given according to seat frame depth.
FIGURE 4.7 Replacing the Seat Frame
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Part No. 1125038
SECTION 4—SEAT
Replacing the Seat Positioning Strap
NOTE: For this procedure, refer to FIGURE 4.8.
1. Remove the seat cushion from the seat pan.
2. Remove the flip back armrests. Refer to Removing/Installing Flip Back Armrest on page 69.
3. Remove the two mounting screws, quick release pin tabs, spacers and locknuts that secure the seat pan and seat positioning straps to the seat frame.
Mounting Screws
Seat Pan
Seat
Positioning
Strap
4. Remove the two halves of the seat positioning strap from the rear seat frame.
5. Reposition the two new seat positioning strap halves underneath seat rails.
Tab
6. Reinstall the two mounting screws, quick release pin tabs, spacers and locknuts that secure the seat pan and seat positioning straps to the seat frame and torque to 75 inch‐lbs.
Locknut
Seat Frame
Quick Release Pin
FIGURE 4.8 Replacing the Seat Positioning
Strap
7. Reinstall the seat cushion onto the seat pan.
Removing/Installing the Back Upholstery
NOTE: The back canes must be removed when removing/installing the back upholstery. Refer to Removing/Installing/Changing the Back Cane Height.
Removing/Installing/Changing the Back Cane Height
NOTE: For this procedure, refer to FIGURE 4.9 on page 48.
NOTE: If changing the back height, new back upholstery may be needed as well. Refer to the following chart to determine if new back upholstery is needed:
NOTE
BACK UPHOLSTERY
HEIGHT
If back height required is within the range of the original back upholstery
height, only new back canes will be needed.
If the back height required is NOT within the range of the original back upholstery height, new back upholstery, and back canes will be required
16 to 17 inches
18 to 19 Inches
20 inches
NOTE: Existing hardware and inserts will be reused.
NOTE: Take note of position and orientation of mounting hardware for reinstallation.
Part No. 1125038
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Pronto® M91™and M94™
SECTION 4—SEAT
Removing
1. Remove flip back armrest from the wheelchair. Refer to Arm Service Procedures for ASBA and Adjustable ASBA Seat on page 69.
NOTE: Note the back angle before disassembly for proper reinstallation.
2. On the side of wheelchair with armrest removed, remove one of the mounting screws, washer, coved washer and locknut that secure the back cane to the seat frame.
3. Cut the tie‐wraps that secure the bottom of the existing back upholstery to the seat frame.
4. Thread the mounting screw removed in STEP 2 through the back cane from the inside of the wheelchair to hold the insert in place.
5. Remove the remaining mounting screw, washer, coved washer and locknut that secures the back cane to the seat frame.
6. Repeat STEPS 1‐4 for the opposite side of the wheelchair and remove back assembly from wheelchair.
7. Remove the two mounting screws and washers that secure the existing back upholstery to the back canes.
8. If present, release hook and loop strap securing the back upholstery to the back canes.
9. Remove the two mounting screws used to keep inserts in the back canes in STEP 4. Set mounting screws and inserts aside.
10. Loosen, but DO NOT remove, the two mounting screws and locknuts securing the spreader bar to the back canes.
11. Grasp the hand grip and slide the back cane out of the spreader bar (if applicable) and the back upholstery.
Installing
NOTE: If replacing back upholstery, discard existing back upholstery and perform this procedure using new back upholstery.
NOTE: If replacing back canes, discard existing back canes and perform this procedure using new back canes.
NOTE: Spreader bar is required on ALL back heights between 20 to 24 inches. Spreader bar is required on back heights 16, 17, 18, or 19 inches ONLY if the width or depth of the chair exceeds 19 inches. Refer to FIGURE 4.9 on page 48 for proper spreader bar location on back canes.
1. Slide one back cane into back upholstery and through spreader bar (if applicable).
2. Position insert into bottom of back cane.
3. From inside of wheelchair, thread a mounting screw through the back cane to hold the insert in position when installing the back assembly.
4. Repeat STEPS 1‐3 for remaining back cane.
NOTE: If changing the back angle, refer to Adjusting the Back Angle on page 48 to determine the proper mounting holes for the desired back angle.
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Part No. 1125038
SECTION 4—SEAT
5. Position back assembly between the back angle plates (FIGURE 4.9).
6. On one side of wheelchair, align back cane mounting holes with the desired mounting holes of the back angle plate.
7. Remove the two mounting screws used to keep inserts in the back canes in STEP 3. Set mounting screws and inserts aside.
WARNING
The back canes MUST be fastened securely to the seat frame BEFORE using the
wheelchair. Torque to 75-inch-lbs.
8. From outside of wheelchair, secure the back cane to the back angle plate using two mounting screws, washers, coved washers and locknuts (FIGURE 4.9). Use Loctite 242 and torque to 75‐inch‐lbs.
9. Repeat STEPS 6‐8 on opposite side of wheelchair.
10. Secure the top of the back upholstery to the back canes with the two existing mounting screws.
11. Using two new tie‐wraps, secure bottom of back upholstery to the seat frame.
12. If necessary, reposition the spreader bar at the correct height for the corresponding back height and torque the mounting hardware to 60‐inch‐lbs (FIGURE 4.9).
13. If present, secure back upholstery hook and loop straps around back canes.
14. Reinstall the flip back armrest onto the wheelchair. Refer to Removing/Installing Flip Back Armrest on page 69.
Part No. 1125038
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Pronto® M91™and M94™
SECTION 4—SEAT
Back Canes
Screws with
Washers
Coved
Washers
NOTE: When replacing the back upholstery, back assembly or changing back height, follow these guidelines for spreader bar height:
BACK HEIGHT
SPREADER BAR HEIGHT
16 inches
5 inches
17 inches
5 inches
18-19 inches
7 inches
Locknuts
NOTE: Height of Spreader Bar from BOTTOM of Back Canes to TOP of Spreader Bar Clamp.
Back Upholstery
Screw with Lug
Spreader Bar
Mounting Screws
Locknut
Back Insert
Washers
Back Angle Plate
Mounting Holes
Seat Frame
Mounting Screws
FIGURE 4.9 Removing/Installing/Changing the Back Cane Height
Adjusting the Back Angle
NOTE: For this procedure, refer to FIGURE 4.10 on page 49.
1. Remove the flip back armrests from the wheelchair. Refer to Removing/Installing Flip Back Armrest on page 69.
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Part No. 1125038
SECTION 4—SEAT
2. Remove the mounting screw, washer, coved washer and locknut from the top mounting hole of back angle plate and back cane (FIGURE 4.10).
NOTE: To avoid losing the insert in each back cane, thread the mounting screw through the cane from the inside of wheelchair to hold the insert in place.
3. Remove the mounting screw, washer, coved washer and locknut from the bottom mounting hole of the back angle plate and back cane.
4. Reposition the back canes into the correct mounting holes of the back angle plate to obtain a back angle between 80° and 100° in 5° increments.
5. Starting with the bottom mounting hole, use the two mounting screws, washers, coved washers and locknuts to secure the back cane with insert to the back angle plate.
6. Torque mounting screws to 75‐inch‐lbs.
7. Reinstall the flip back armrests onto the wheelchair. Refer to Removing/Installing Flip Back Armrest on page 69.
ANGLE
BACK CANE MOUNTING HOLE
Top
80°
2nd From
Bottom
Top
90°
Top Front
Bottom Rear
Back Angle
Plate
Top Front
Bottom Center
Back Angle
Plate
Back
Cane
Top Front
Bottom Front
Back Angle
Plate
Back
Cane
2nd From
Bottom
Top
100°
Back
Cane
Bottom
Top
95°
Back
Cane
Bottom
Top
85°
BACK ANGLE PLATE HOLE
Top Center
Bottom Front
Back Angle
Plate
Back
Cane
Bottom
Top Rear
Bottom Front
Back Angle
Plate
FIGURE 4.10 Adjusting the Back Angle
Part No. 1125038
49
Pronto® M91™and M94™
SECTION 4—SEAT
Adjustable ASBA Seat Service Procedures
Removing/Installing the Seat Pan
NOTE: For this procedure, refer to FIGURE 4.11.
Removing
Socket
Screws
Seat Pan
1. Remove the seat cushion.
2. Remove the two socket screws securing the seat pan to the seat frame.
3. Remove the seat pan from the seat frame.
Installing
Seat
Frame
1. Position the new seat pan onto the seat frame as shown.
FIGURE 4.11 Removing/Installing the Seat Pan
2. Secure the new seat pan to the seat frame using the two socket screws.
3. Install the seat cushion.
Adjusting the Seat Width
NOTE: For this procedure, refer to FIGURE 4.12 on page 52.
Seat Width Adjustment Table
FRAME SIZE
SEAT WIDTH RANGE
SMALL
16 - 20 inches in 1-inch increments
LARGE
20 - 24 inches in 1-inch increments
NOTE: If adjusting the seat width beyond the range of the existing seat frame, the crossbars must be replaced.
NOTE: The spreader bar MUST be replaced for systems ordered omit upholstery option when changing between the small frame size and the large frame size.
1. If necessary, remove the spreader bar. Refer to Removing/Installing the Spreader Bar on page 58.
2. Remove the hex screw and coved washers securing each crossbar to the seat frame.
3. Examine the Seat Width Adjustment Table to determine if the seat width adjustment is within or beyond the range of the existing seat frame.
4. Perform one of the following:
• Within the Range ‐ Proceed to STEP 5.
• Beyond the Range ‐ Perform the following steps (Detail “A”):
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Part No. 1125038
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i. Remove the two hex screws securing the crossbars to each side rail.
ii. Remove the crossbars from the side rails.
iii. Insert new crossbars into the side rails.
iv. Position the new crossbars so the mounting hole is facing down and aligned with the side rail mounting hole.
v. Secure the new crossbars to the side rails using the two hex screws. Torque the hex screws to 75 in‐lbs ± 20%.
5. Pull/push the side rails (Detail “B”) to the desired width shown in the following table.
Seat Width Mounting Holes
FRAME
SIZE
SEAT
WIDTH
SMALL
16-INCH
SIDE RAIL MOUNTING HOLES*
(FRONT VIEW)
17-INCH
18-INCH
19-INCH
20-INCH
LARGE
20-INCH
21-INCH
22-INCH
23-INCH
24-INCH
*NOTE: Only left side rail shown. Use the same mounting hole for opposite side rail.
6. Align the crossbar mounting holes with the seat frame mounting holes.
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7. Secure each crossbar to the seat frame with a hex screw and coved washer. Torque the hex screw to 75 in‐lbs ± 20%.
8. If necessary, install the new spreader bar. Refer to Removing/Installing the Spreader Bar on page 58.
NOTE: Seat pan, back and arms removed for clarity.
Crossbar
Crossbar
Mounting Holes
Seat Frame
Seat Frame
Mounting
Hole
Side Rail
Hex Screw
Coved
Washer
DETAIL “A” - REPLACING THE CROSSBARS
Crossbars
Side Rail
Mounting Hole
Hex Screw
Mounting
Hole
Side Rail
Hex Screw
FIGURE 4.12 Adjusting the Seat Width
Adjusting the Seat Depth
NOTE: For this procedure, refer to FIGURE 4.13 on page 54.
1. Examine the following chart to determine if the desired seat depth adjustment is within or beyond the range of the existing seat frame.
FRAME SIZE
SEAT DEPTH RANGE
SMALL
16 - 19 inches in 1-inch increments
LARGE
19 - 22 inches in 1-inch increments
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Part No. 1125038
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2. Perform one of the following:
• Seat Depth Adjustment is Within the Range of Existing Seat Frame ‐ Proceed to STEP 3.
• Seat Depth Adjustment is Beyond the Range of Existing Seat Frame ‐ Replace the side rails. Refer to Removing/Installing Side Rails on page 54.
3. Loosen, but DO NOT remove, the four hex screws and washers securing the bottom of the cane brackets to the side rails.
4. Loosen, but DO NOT remove, the four hex screws securing the front arm sockets to the side rails.
5. Use the following Seat Depth Adjustment Table to determine the distance required to obtain the desired seat depth.
Seat Depth Adjustment Table
SEAT DEPTH
DISTANCE* (IN INCHES)
16-INCH
5.50
17-INCH
4.50
18-INCH
3.50
19-INCH
2.50 (Small Frame)
5.50 (Large Frame)
20-INCH
4.50
21-INCH
3.50
22-INCH
2.50
*NOTE: Distance is between the rear of the rear arm socket and the rear of the side rail (Detail “A”).
6. Measure the distance determined in STEP 5 from the end of the side rail.
7. Slide the cane brackets along the side rails to align the rear of the rear arm socket with the distance measured in STEP 6.
8. Secure the cane brackets to the side rails with the four hex screws and washers. Torque the hex screws to 13 ft‐lbs.
9. Secure the front arm sockets to the side rails with the four hex screws. Torque the hex screws to 13 ft‐lbs.
Part No. 1125038
53
Pronto® M91™and M94™
SECTION 4—SEAT
DETAIL “A” - SEAT
DEPTH
MEASUREMENT
Rear
Arm
Socket
Side Rail
Measure Distance
Cane
Bracket
Front
Arm
Socket
Side Rail
Hex Screws
FIGURE 4.13 Adjusting the Seat Depth
Removing/Installing Side Rails
NOTE: For this procedure, refer to FIGURE 4.14 on page 55.
Removing Side Rails
1. Remove both armrests.
2. Remove the two hex screws, washer and lanyard securing the crossbars to the side rail.
3. Loosen, but DO NOT remove, the four hex screws securing the cane brackets to the side rails.
4. Loosen, but DO NOT remove, the four hex screws securing the front arm sockets to the side rails.
5. Use a screwdriver to gently tap the two roll pins out of the side rails.
6. Slide both cane brackets (with T‐nuts and back canes) out of the slots in the side rails.
7. Slide both front arm sockets (with T‐nuts) out of the slots in the side rails.
8. Pull both side rails off the crossbars.
Pronto® M91™and M94™
54
Part No. 1125038
SECTION 4—SEAT
Installing Side Rails
1. Install new side rails onto crossbars.
NOTE: Ensure long end of side rail is towards the front of the wheelchair.
2. Secure the side rails to the crossbars with the hex screws, washer and lanyard. Torque to 75 in‐lbs ± 20%.
3. Slide cane brackets (with T‐nuts and back assembly) into the slots in the side rails.
4. Slide front arm sockets (with T‐nuts) into the slots in the side rails.
5. Use a rubber mallet to tap the two roll pins into the side rails.
6. Adjust the seat depth. Refer to Adjusting the Seat Depth on page 52.
7. Tighten the four hex screws to secure the cane brackets to the side rails. Torque to 13 ft‐lbs ± 20%.
8. Install the armrests.
NOTE: It may be necessary to slide the front arm sockets to the proper position to install the armrests.
9. Tighten the four hex screws to secure the front arm sockets to the side rails. Torque to 13 ft‐lbs ± 20%.
Side View
Cane Bracket
Back
Cane
Front Arm
Socket
Slot
Side Rail
Crossbar
Hex Screws
Washer
Roll
Pin
Hex Screws
FIGURE 4.14 Removing/Installing Side Rails
Part No. 1125038
55
Pronto® M91™and M94™
SECTION 4—SEAT
Adjusting the Back Width
A new back pan is required when the back width is adjusted. Back width MUST be adjusted with seat width. Refer to Adjusting the Seat Width on page 50.
Contoura Backs Only ‐ Seat and back widths are restricted to 16, 18, 20, 22 or 24 inches.
Adjusting the Back Angle
WARNING
Wheelchairs with TRRO Only - Adjusting the back angle from the factory setting
will void TRRO compliance. After adjusting the back angle, DO NOT transport an
occupied wheelchair in a motor vehicle of any kind. The wheelchair may only be
transported in a motor vehicle while unoccupied, and will be considered TRBKTS.
NOTE: For this procedure, refer to FIGURE 4.15.
1. Loosen, but DO NOT remove, the two lower hex screws securing the cane brackets to the back canes.
2. Remove the two upper hex screws, washers and locknuts securing the cane brackets to the back canes.
3. Align the upper mounting holes in the back canes with the desired mounting holes in the cane brackets (Detail “A”).
4. Install the two upper hex screws, washers and locknuts to secure the cane brackets to the back canes.
5. Torque the locknuts on upper and lower hex screws to 13 ft‐lbs ± 20%.
DETAIL “A” - CANE
BRACKET
MOUNTING HOLES
95°
Locknut
Back Cane
85°
90°
Cane Bracket
Washer
105°
100°
Upper Hex
Screw
Lower Hex
Screw
FIGURE 4.15 Adjusting the Back Angle
Pronto® M91™and M94™
56
Part No. 1125038
SECTION 4—SEAT
Adjusting the Back Height
Contoura Backs ‐ There is no height adjustment available for wheelchairs with Contoura backs.
Upholstered Backs ‐ The back canes MUST be replaced to adjust the back height for upholstered backs. Refer to Removing/Installing the Back Canes.
Removing/Installing the Back Canes
NOTE: For this procedure, refer to FIGURE 4.16 on page 58.
NOTE: Existing hardware will be reused.
NOTE: Take note of position and orientation of mounting hardware for reinstallation.
Removing
1. Remove armrest from the wheelchair. Refer to Removing/Installing Flip Back Armrest on page 69.
2. For proper installation, note the mounting position of the upper hex screw securing the cane bracket to the back cane.
3. Remove the upper hex screw, washer and locknut securing the cane bracket to the back cane.
4. Remove the lower hex screw, washer and locknut securing the cane bracket to the back cane.
5. Remove the back cane from the wheelchair.
6. Repeat STEPS 2 ‐ 6 for the opposite back cane.
Installing
NOTE: If replacing back canes, discard existing back canes and perform this procedure using new back canes.
1. Install the lower hex screw, washer and locknut through the slot in the cane bracket to secure the cane bracket to the back cane.
NOTE: The cane bracket should be positioned as shown in FIGURE 4.16.
2. Install the upper hex screw, washer and locknut through one of the following:
• Using the Same Back Angle ‐ the mounting hole noted in STEP 3 of Removing on page 57.
• Changing the Back Angle ‐ the mounting hole determined in Adjusting the Back Angle on page 56.
3. Torque both locknuts to 13 ft‐lbs.
4. Repeat STEPS 1 ‐ 3 for the opposite back cane.
5. Reinstall the flip back armrest onto the wheelchair. Refer to Removing/Installing Flip Back Armrest on page 69.
Part No. 1125038
57
Pronto® M91™and M94™
SECTION 4—SEAT
Back Cane
Locknuts
Cane Bracket
Upper Hex Screw
Washers
Lower Hex Screw
Slot
FIGURE 4.16 Removing/Installing the Back Canes
Removing/Installing the Spreader Bar
NOTE: For this procedure, refer to FIGURE 4.17.
Removing
1. Remove the two mounting screws and locknuts securing the spreader bar to the back canes.
2. Remove the spreader bar from the back canes.
Installing
1. Position the spreader bar against the back canes.
2. Loosely install the two mounting screws and locknuts hold the spreader bar against the back canes.
3. Adjust the position of the spreader bar until it is parallel with the ground/floor.
4. Torque the mounting screws to 13 ft‐lbs ± 20%.
Spreader
Bar
Locknut
Locknut
Mounting
Screw
Mounting
Screw
Back Cane
FIGURE 4.17 Removing/Installing the Spreader Bar
Pronto® M91™and M94™
58
Part No. 1125038
SECTION 4—SEAT
Adjusting Spreader Bar Width
NOTE: For this procedure, refer to FIGURE 4.18.
NOTE: The spreader bar can be adjusted from 16 to 20 inches or from 20 to 24 inches.
NOTE: This procedure only applies to systems without Contoura backs that omit upholstery.
1. Remove spreader bar. Refer to Removing/Installing the Spreader Bar on page 58.
2. Remove the two screws, four coved spacers and two locknuts securing the two handles to the tube.
3. Align the handle mounting holes with the desired tube mounting holes.
4. Secure the two handles to the tube using the two screws, four coved spacers and two locknuts. Torque to 75 in‐lbs ± 20%.
Coved Spacer
Tube
Screws
Handle
Coved
Spacer
Handle
Mounting Hole
Coved Spacer
Locknuts
Coved Spacer
Handle Mounting
Hole
Handle
DETAIL “A” - TUBE MOUNTING HOLES
16 to 20-inch Tube
20 to 24-inch Tube
20 Inches
19 Inches
18 Inches
24 Inches
23 Inches
22 Inches
17 Inches
21 Inches
16 Inches
20 Inches
FIGURE 4.18 Adjusting Spreader Bar Width
Part No. 1125038
59
Pronto® M91™and M94™
SECTION 4—SEAT
Replacing the Seat Positioning Strap
NOTE: For this procedure, refer to FIGURE 4.19.
1. Remove the seat cushion from the seat pan.
2. Remove the flip back armrests. Refer to Removing/Installing Flip Back Armrest on page 69.
3. Remove mounting screw, washer, and lock nut that secure the seat positioning strap to the seat frame.
4. Position a new seat positioning strap on the seat frame.
5. Reinstall the mounting screw, washer, and lock nut that secure the seat positioning strap to the seat frame.
Lock
Nut
Washer
Mounting
Screw
Seat Positioning Strap
FIGURE 4.19 Replacing the Seat Positioning Strap
Pronto® M91™and M94™
60
Part No. 1125038
SECTION 4—SEAT
Van Seat Service Procedures
Adjusting the Back Angle
NOTE: For this procedure, refer to FIGURE 4.20.
Back
1. Lift up on the release handle and adjust back to desired angle.
2. Let go of the release handle to lock the back in position.
Release
Handle
FIGURE 4.20 Adjusting the Back Angle
Adjusting the Seat Position on Van Seat Frame
WARNING
DO NOT adjust the rear seat posts higher than the front seat posts.
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 perform this procedure.
NOTE: For this procedure, refer to FIGURE 4.21 on page 62.
1. Remove the seat assembly. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
2. Remove the four bolts, four coved washers and two spacers securing the van seat to the seat frame.
3. Separate van seat from seat frame.
4. Refer to Detail “A” of FIGURE 4.21 to determine the correct mounting holes to achieve the desired seat position on the seat frame.
5. Align the van seat mounting holes determined in STEP 4 with the seat frame mounting holes.
6. Secure the van seat to the seat frame using the four bolts, four coved washers and two spacers. Securely tighten.
7. Reinstall the seat assembly. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
Part No. 1125038
61
Pronto® M91™and M94™
SECTION 4—SEAT
Van Seat
Spacer
Seat Frame
Coved Washer
Mounting Hole (Seat Frame)
Coved Washer
Bolt
DETAIL “A”
Front of seat
1-inch Back
1-inch Back
Standard Seat Position
Standard Seat Position
2-inch Forward
1-inch Back
2-inch Forward
These
mounting
holes are
not used
1-inch Back
Standard Seat Position
Standard Seat Position
2-inch Forward
2-inch Forward
Bottom View of Van Seat
Rear of Seat
FIGURE 4.21 Adjusting the Seat Position on Van Seat Frame
Pronto® M91™and M94™
62
Part No. 1125038
SECTION 4—SEAT
Adjusting the Van Seat Back Depth
NOTE: For this procedure, refer to FIGURE 4.22.
1. Remove the seat assembly. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
2. Remove the van seat from the seat frame. Refer to Adjusting the Seat Position on Van Seat Frame on page 61. 3. Remove the six mounting screws that secure the seat back to the seat.
4. Align the seat mounting holes with the seat back mounting holes in the desired mounting position (Detail “A” of FIGURE 4.22).
5. Using the six mounting screws, secure the seat back to the seat. Securely tighten.
6. Reinstall the van seat onto the seat frame. Refer to Adjusting the Seat Position on Van Seat Frame on page 61. 7. Reinstall the seat assembly. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
DETAIL “A” - SEAT BACK MOUNTING POSITIONS
Seat Back
Forward Position
Seat Back Mounting
Holes
(Typical Both Sides)
Back Depth Seat Size
Seat
16 inches
16 X 18 inches
16 inches
18 X 18 inches
18 inches
20 X 20 inches
18 inches
22 X 20 inches
Middle Position
Back Depth Seat Size
Mounting
Screws
Seat Mounting Holes
(Typical Both Sides)
16 inches
16 X 18 inches
16 inches
18 X 18 inches
18 inches
20 X 20 inches
18 inches
22 X 20 inches
Rear Position
Back Depth Seat Size
16 inches
16 X 18 inches
16 inches
18 X 18 inches
18 inches
20 X 20 inches
18 inches
22 X 20 inches
FIGURE 4.22 Adjusting the Van Seat Back Depth
Part No. 1125038
63
Pronto® M91™and M94™
SECTION 4—SEAT
Removing/Installing Drive Lockout Switch Mounting
Hardware and Cable (Full Recline Van Seat Only)
NOTE: For this procedure, refer to FIGURE 4.23 on page 65.
NOTE: Reverse this procedure to install the drive lockout switch mounting hardware.
1. Place the wheelchair in a well ventilated area where work can be performed without risking damage to carpeting or floor covering.
2. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick cable.
3. Lift up on the release handle and recline seat back to 170°.
4. Remove the two mounting screws and washers securing the drive lockout switch cable to the seat.
5. Lift up on the release handle and return the seat to the upright position.
6. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
7. Remove the batteries. Refer to Installing/Removing the Batteries on page 103. NOTE: By this step the rear and top shrouds should be open and the drive lockout switch cable should be disconnected (connector is located next to charger).
NOTE: Tie‐wraps that secure the auxiliary power connectors and drive lockout cable are also used to secure the charger cable lead to the wheelchair frame.
8. Cut the three ties‐wrap that secure the auxiliary power connectors and drive lockout cable to the wheelchair frame (Detail “A” of FIGURE 4.23).
NOTE: After disconnecting the drive lockout cable, ensure the charger cable is securely connected to the auxiliary power connectors.
9. Disconnect the drive lockout cable from the auxiliary power connectors.
10. Remove drive lockout cable from the wheelchair frame.
Pronto® M91™and M94™
64
Part No. 1125038
SECTION 4—SEAT
Seat Back
NOTE: Switch sensor mounting plate shown removed for clarity ONLY. DO NOT remove the switch sensor mounting plate.
Washers
Mounting
Screws
Magnet
DETAIL “A”
Tie-Wrap
Wheelchair
Frame
Auxiliary
Power
Connectors
Tie-wraps
Switch
Sensor
Mounting
Plate
Charger
Cable
Washers
Drive Lockout
Switch Cable
Drive Lockout
Switch Cable
(to Seat)
Charger
Drive Lockout
Switch Cable
(to auxiliary power
connectors)
Locknuts
Mounting Screws
Drive Lockout
Switch Cable
Connector
FIGURE 4.23 Removing/Installing Drive Lockout Switch Mounting Hardware and Cable (Full
Recline Van Seat Only)
Part No. 1125038
65
Pronto® M91™and M94™
SECTION 5—ARMS
SECTION 5—ARMS
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.
Arm Service Procedures for Van Seat
Removing/Installing Van Seat Arm
NOTE: For this procedure, refer to FIGURE 5.1.
NOTE: Reverse this procedure to install the adjustable width arms.
1. If necessary, disconnect the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
2. Loosen lock knob that secures the adjustable width arm to the arm support tube.
3. Remove the adjustable width arm from the arm support tube.
4. If necessary, repeat STEPS 1‐3 to remove the remaining adjustable width arm.
Adjusting Van Seat Arm Width
NOTE: For this procedure, refer to FIGURE 5.1.
1. Loosen the two lock knobs that secure the adjustable width arms to the arm support tube.
Adjustable Width Arm
NOTE: Both adjustable width arms should be adjusted to the same distance away from the arm support tube.
NOTE: Changing the width of the adjustable width arms may also effect the overall width of the wheelchair.
2. Reposition adjustable width arms until desired width is achieved.
Lock
Knob(s)
3. Securely tighten the two lock knobs that secure the adjustable width arms to the arm support tube.
Pronto® M91™and M94™
Arm Support
Tube
FIGURE 5.1 Removing/Installing Van Seat
Arm and Adjusting Van Seat Arm Width
66
Part No. 1125038
SECTION 5—ARMS
Adjusting Van Seat Arm Angle
WARNING
Pinch point may occur when adjusting the arm angle position (Detail “A”).
NOTE: For this procedure, refer to FIGURE 5.2.
1. Lift up the armrest.
2. Loosen the jam nut.
3. Adjust the socket screw up or down to the desired arm angle position. 4. Tighten the jam nut.
5. To determine the same angle for the opposite armrest, count the exposed threads after the jam nut has been tightened.
6. Repeat STEPS 1‐4 for opposite armrest, if necessary.
Adjusting Van Seat Arm Height (Adjustable Height Arms Only)
NOTE: For this procedure, refer to FIGURE 5.2.
1. Remove the lock knob that secures the armrest to the arm frame assembly.
2. Adjust the armrest to one of five positions in 1‐inch increments.
3. Reinstall the lock knob that secures the armrest to the arm frame assembly and tighten securely.
DETAIL “A” - ANGLE
Socket
Screw
Armrest
Count
Exposed
Threads
DETAIL “B” - HEIGHT
Height
Adjustment
Holes
Lock Knob
Armrest
Arm Frame
Assembly
Jam Nut
FIGURE 5.2 Adjusting Van Seat Arm Height (Adjustable Height Arms Only)
Part No. 1125038
67
Pronto® M91™and M94™
SECTION 5—ARMS
Replacing Van Seat Armrest Pad Assembly
NOTE: For this procedure, refer to FIGURE 5.3.
1. If necessary, remove the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
2. Remove the mounting screw, washers and locknut that secure the existing armrest pad assembly to the arm post.
3. Position the new armrest pad assembly on the armrest post and secure with the mounting screw, washers, and locknut. Refer to FIGURE 5.3 for correct hardware orientation. 4. If necessary, install the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
5. Repeat STEPS 2‐4 for the opposite armrest plate, if necessary.
Washer
Armrest Pad
Assembly
Mounting Screw
Arm Post
Locknut
Washers
FIGURE 5.3 Replacing Van Seat Armrest Pad Assembly
Pronto® M91™and M94™
68
Part No. 1125038
SECTION 5—ARMS
Arm Service Procedures for ASBA and Adjustable
ASBA Seat
WARNING
Make sure the flip back armrest release levers and height adjustment levers are in
the locked position before using the wheelchair.
Removing/Installing Flip Back Armrest
NOTE: For this procedure, refer to FIGURE 5.4.
NOTE: Flip back armrest release lever must be in unlocked position when placing armrest into the arm sockets.
NOTE: Reverse this procedure to install the flip back armrest.
1. If necessary, disconnect the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
2. Unlock flip back armrest by pulling flip back armrest release lever into the unlocked (horizontal) position.
3. Remove quick release pin securing the flip back armrest to the wheelchair frame.
4. Pull UP on the flip back armrest and remove the armrest from the arm sockets.
5. Repeat STEPS 2‐4 for the opposite flip back armrest, if necessary.
Flip Back Armrest
Release Lever
Flip Back Armrest
Locked
(Vertical)
NOTE: ASBA armrest shown. ADJUSTABLE ASBA armrest works the same way.
Unlocked
(Horizontal)
Rear Arm Socket
Seat Frame
Quick Release Pin
Front Arm Socket
FIGURE 5.4 Removing/Installing Flip Back Armrest
Part No. 1125038
69
Pronto® M91™and M94™
SECTION 5—ARMS
Adjusting the Flip Back Armrest
NOTE: For this procedure, refer to FIGURE 5.5.
1. Unlock top of flip back armrest by pulling height adjustment lever into the up (horizontal) position.
2. Adjust top of the flip back armrest to the desired height.
3. Lock top of flip back armrest by pushing height adjustment lever into the down (vertical) position.
4. Lift up on flip back armrest to make sure the armrest is locked in place.
5. Repeat STEPS 1‐4 for opposite flip back armrest, if necessary.
Height
Adjustment
Lever
Height
Adjustment
Lever
Locked
(Down - Vertical)
Unlocked
(Up - Horizontal)
Flip Back Armrest
NOTE: ASBA armrest shown. ADJUSTABLE ASBA armrest works the same way.
Front Arm Socket
FIGURE 5.5 Adjusting the Flip Back Armrest
Pronto® M91™and M94™
70
Part No. 1125038
SECTION 6—FRONT RIGGINGS
SECTION 6—FRONT RIGGINGS
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that all
attaching hardware is tightened securely - otherwise injury or damage may result.
DO NOT stand on the front riggings, otherwise damage may occur. When getting
in or out of the wheelchair, make sure that the footplates on the front riggings are
in the upward position or moved out of the way.
Before performing any maintenance, adjustment or service verify that On/Off
switch on the joystick is in the OFF position.
WARNING
While the wheelchair is moving, minimum ground clearance for the front rigging is
three inches. If the wheelchair is not moving, the front rigging MUST maintain a minimum of one inch ground clearance - otherwise personal injury and damage may result.
Installing/Removing Front Riggings
NOTE: For this procedure, refer to FIGURE 6.1.
Installing
1. If necessary, remove the footboard. Refer to Removing/Installing the Footboard Assembly on page 78.
Telescoping
Front Rigging
Support
Hinge
Pins
2. Turn front rigging to the side (open footplate is perpendicular to wheelchair) and position mounting holes in the front rigging hinge plates with hinge pins on the wheelchair frame. Front Rigging
Release Lever
Front Rigging
Hinge Plate
3. Install the front rigging hinge plates onto the hinge pins on the wheelchair frame.
FIGURE 6.1 Installing/Removing Front
Riggings
4. Push the front rigging towards the inside of the wheelchair until it locks into place.
NOTE: The footplate will be on the inside of the wheelchair when locked in place.
5. Repeat STEPS 2‐4 for opposite side of wheelchair.
Removing
1. Push the front rigging release lever inward and rotate the footrest out.
2. Lift up on front rigging and remove from the wheelchair.
3. Repeat STEPS 1‐2 for opposite side of wheelchair.
Part No. 1125038
71
Pronto® M91™and M94™
SECTION 6—FRONT RIGGINGS
Adjusting Footrest Height
Model PHWH93
NOTE: For this procedure, refer to FIGURE 6.2.
1. Remove any accessories from the footrest(s).
2. Remove the footrest from the wheelchair. Refer to Installing/
Removing Front Riggings on page 71.
Locknut
Footrest
Support
Coved Washer
NOTE: Lay footrest on a flat surface to simplify performing procedure.
Hex Bolt
3. Remove the hex bolt, coved washers and locknut that secure the lower footrest to the footrest support.
Coved
Washer
4. Reposition the lower footrest to the desired height.
5. Reinstall hex bolt, coved washers and locknut that secure lower footrest to footrest support. Tighten securely.
Lower
Footrest
FIGURE 6.2 Adjusting Footrest Height Model PHWH93
6. Repeat STEPS 1‐5 for the opposite footrest, if necessary.
7. Reinstall the footrest(s) onto the wheelchair. Refer to Installing/Removing Front Riggings on page 71.
8. Reinstall any accessories onto the footrest(s).
Model PH904A and PHAL4A
NOTE: For this procedure, refer to FIGURE 6.3.
Footrest
Support
NOTE: PH904A style front rigging shown. PHAL4A front rigging adjusts the same way.
Lug Bolt
1. Loosen, but do not remove the lug bolt and locknut that secure the lower footrest to the footrest support.
Locknut
Lower
Footrest
2. Reposition the lower footrest to the desired height.
FIGURE 6.3 Adjusting Footrest Height Model PH904A and PHAL4A
3. Securely tighten the lug bolt and locknut that secure the lower footrest to the footrest support.
4. Repeat STEPS 1‐3 for the opposite footrest, if necessary.
Pronto® M91™and M94™
72
Part No. 1125038
SECTION 6—FRONT RIGGINGS
Replacing Heel Loops
NOTE: For this procedure, refer to FIGURE 6.4.
1. Note the position of hex bolt, coved washers and locknut for reinstallation.
Locknut
2. Remove the hex bolt, coved washers and locknut that secure the lower footrest to the footrest support.
Coved
Washer
Coved
Washer
Hex Bolt
Phillips Bolt
Footrest
Support
3. Remove the lower footrest.
4. Remove the phillips bolt, spacer and locknut that secure the existing heel loop to the lower footrest.
Spacer
Lower
Footrest
Heel Loop
5. Slide the existing heel loop off the lower footrest.
Locknut
6. Replace heel loop.
FIGURE 6.4 Replacing Heel Loops
7. Reverse STEPS 1‐6 to reassemble.
NOTE: When securing heel loop to lower footrest, tighten the phillips screw and locknut until the spacer is secure.
Raising/Lowering Elevating Front Riggings
NOTE: For this procedure, refer to FIGURE 6.5.
1. Perform one of the following:
• Raising ‐ Pull back on the release lever and raise front rigging to the desired height.
• Lowering ‐ Support front rigging with one hand away from the release lever. Push release lever downward with other hand.
Release
Lever
FIGURE 6.5 Raising/Lowering Elevating Front Riggings
Part No. 1125038
73
Pronto® M91™and M94™
SECTION 6—FRONT RIGGINGS
Adjusting/Replacing Telescoping Front Rigging
Supports
Van Style Seats
NOTE: For this procedure, refer to FIGURE 6.6 on page 75.
NOTE: When adjusting the telescoping front rigging support depth, ensure the footplate does not interfere with the caster wheel rotation.
NOTE: Telescoping front rigging supports can be extended up to 2‐inches from the wheelchair frame in 1‐inch increments. This adjustment does not affect seat depth.
NOTE: When installing the front riggings support tubes, ensure that the hinge pins are on the outside of the chair facing away from the seat frame. 1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
2. Remove the two socket bolts, spacers and locknuts that secure telescoping front rigging support to the seat frame.
3. Perform one of the following:
• Adjusting ‐
i. Align the appropriate mounting hole of the telescoping front rigging support with the middle mounting hole in the seat frame tubes to achieve the desired depth. Refer to Front Rigging Support Mounting Positions in FIGURE 6.6.
• Replacing ‐
i. Remove the existing telescoping front rigging support from the wheelchair frame.
ii. Insert the new telescoping front rigging support into the seat frame.
iii. Align the appropriate mounting hole of the telescoping front rigging support with the middle mounting hole in the seat frame tubes to achieve the desired depth. Refer to Front Rigging Support Mounting Positions in FIGURE 6.6.
NOTE: The footplate will be on the inside of the wheelchair when locked in place.
4. Using the two socket bolts and locknuts, secure the telescoping front rigging support to the seat frame.
5. If necessary, repeat STEPS 2‐4 on remaining telescoping front rigging support.
6. Reinstall the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
Pronto® M91™and M94™
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Part No. 1125038
SECTION 6—FRONT RIGGINGS
Not Used
Socket Bolts
Middle Mounting
Holes
Telescoping Front
Rigging Support
Mounting
Spacer
Holes
8
Locknuts
7
6 5
4 3 2
Hinge
Not Used
Pins
Seat
Frame
FRONT RIGGING SUPPORT MOUNTING POSITIONS
STANDARD POSITION
1-INCH OUT
2-INCHES OUT
18 & 20-Inches
Wide
22 & 24-Inches
Wide
18 & 20-Inches
Wide
22 & 24-Inches
Wide
18 & 20-Inches
Wide
22 & 24-Inches
Wide
Holes 2 and 3
Holes 4 and 5
Holes 3 and 4
Holes 5 and 6
Holes 4 and 5
Holes 6 and 7
FIGURE 6.6 Adjusting/Replacing Telescoping Front Rigging Supports
ASBA
NOTE: For this procedure, refer to FIGURE 6.7 on page 76.
1. Remove the two mounting screws, spacers and locknuts that secure the telescoping front rigging support to the seat frame.
2. Perform one of the following:
• Slide existing telescoping front rigging support to one of three depth positions.
• Remove existing telescoping front rigging.
3. Secure telescoping front rigging at desired depth with existing two mounting screws, spacers, and locknuts. Securely tighten.
NOTE: The two telescoping front rigging supports can be positioned at different depths depending on the need of the user.
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SECTION 6—FRONT RIGGINGS
Mounting
Screws
Spacer
Telescoping Front
Rigging Support
Locknut
Spacer
Locknut
FIGURE 6.7 Adjusting/Replacing Telescoping Front Rigging Supports
Adjustable ASBA
WARNING
If the telescoping tubes need to be extended greater than two inches, then the seat
MUST be repositioned rearward to ensure stability - otherwise personal injury and/
or damage to the wheelchair and surrounding property may result.
NOTE: For this procedure, refer to FIGURE 6.8 on page 77.
1. Remove the two cap screws, spacers and threaded blocks securing the telescoping front tube to the side rail.
2. Perform one of the following:
• Slide existing telescoping front rigging support to one of six depth positions.
• Remove existing telescoping front rigging.
3. Secure the telescoping front tube to the side rail at the desired depth with the existing two cap screws, spacers and threaded blocks.
4. Repeat STEPS 1 to 3 on the opposite side if desired.
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SECTION 6—FRONT RIGGINGS
Side Rail
Spacers
Cap Screws
Side Rail
Cap Screws
Threaded
Blocks
Telescoping
Front Tube
Spacers
FIGURE 6.8 Adjusting/Replacing Telescoping Front Rigging Supports - Adjustable ASBA
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SECTION 7—FOOTBOARD ASSEMBLY
SECTION 7—FOOTBOARD
ASSEMBLY
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that 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.
Pinch point may occur when rotating the footboard assembly.
DO NOT stand on the flip-up footboard. When getting in or out of the wheelchair,
make sure that the flip-up footboard is in the upward position.
LIMITED CLEARANCE BETWEEN FOOTBOARD AND CASTER - The user’s feet
MUST remain on the footboard while operating the chair. If the user’s feet are
allowed to rest off the side of the footboard they may come in contact with the
caster possibly resulting in injury.
Removing/Installing the Footboard Assembly
NOTE: For this procedure, refer to FIGURE 7.1 on page 79.
Removing
1. Remove the quick release pin that secures the footboard assembly to the wheelchair frame by depressing the button while sliding the pin out.
2. Remove the footboard assembly from the wheelchair frame.
Installing
WARNING
Make sure the detent balls of the quick release pin are fully released and protruding
past the outer edge of the tube before operating the wheelchair. Otherwise, injury
and/or damage may result.
Keep detent balls clean.
1. Position the footboard assembly onto the wheelchair frame so that the mounting hole in the wheelchair frame aligns with the desired mounting hole in the footboard assembly.
2. Install the quick release pin by depressing the button while sliding the pin in. Ensure that the detent balls of the quick release pin are fully released and protruding past the outer edge of the tube (Detail “A”of FIGURE 7.1).
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Wheelchair Frame
Mounting
Hole
DETAIL “A” - Bottom View of
Footboard
Quick Release Pin
Quick
Release
Pin
Detent Ball
Footboard Assembly
Outer Edge of Tube
Detent Balls
FIGURE 7.1 Removing/Installing the Footboard Assembly
Adjusting the Footboard Assembly
Angle
NOTE: For this procedure, refer to FIGURE 7.2.
1. Loosen the jam nut and set screw located underneath the rear of the footplate.
2. Adjust the set screw in or out to obtain the desired footboard assembly angle.
3. Thread the jam nut and washer inward until flush with the footboard bracket.
4. Securely tighten the jam nut and washer to secure the mounting screw in place.
Set Screw, Washer and Jam Nut
Footboard Assembly
FIGURE 7.2 Adjusting the Footboard Assembly - Angle
Part No. 1125038
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SECTION 7—FOOTBOARD ASSEMBLY
Depth
NOTE: For this procedure, refer to FIGURE 7.3.
1. Remove the quick release pin that secures the footboard assembly to the wheelchair frame.
WARNING
Make sure the detent balls are engaged with the outer edge of the tube - otherwise,
injury and/or damage may result.
2. Adjust footboard to one of three mounting positions.
3. Install the quick release pin. Make sure the detent balls are engaged with the outer edge of the tube (Detail “A” of FIGURE 7.3).
Wheelchair Frame
Mounting
Hole
DETAIL “A” - Bottom View of
Footboard
Quick Release Pin
Three
Depth
Adjustment
Holes
Detent Ball
Quick Release Pin
Footboard Assembly
Outer Edge of Tube
Detent Balls
FIGURE 7.3 Adjusting the Footboard Assembly - Depth
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Part No. 1125038
SECTION 8—WHEELS
SECTION 8—WHEELS
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.
Replacing the Front/Rear Casters
NOTE: For this procedure, refer to FIGURE 8.1.
NOTE: Front and rear casters are replaced in the same manner.
NOTE: When replacing the front/rear caster assemblies, it is necessary to brace the caster assemblies to prevent the wheel from spinning.
1. Remove the mounting screw, two washers and locknut that secure the caster to the fork.
2. Remove the caster and discard.
3. Secure new caster to fork with existing mounting screw, two washers and locknut. Securely tighten.
Fork
Locknut
Washer
Mounting Screw
Washer
Caster
FIGURE 8.1 Replacing the Front/Rear Casters
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SECTION 8—WHEELS
Adjusting Caster Assembly
NOTE: For this procedure, refer to FIGURE 8.2.
1. Lift front edge of the dust cover up and remove from head tube.
2. To properly tighten caster assembly and guard against flutter, perform the following check:
NOTE: Two people are recommended to perform this STEP ‐ one to tip wheelchair back and one to inspect/adjust the caster assembly.
A. Tip back the wheelchair.
B. Pivot both caster assemblies to top of their arc simultaneously.
C. Let casters drop to bottom of arc (casters should swing once to on ‐side, then immediately rest in a straight downward position).
D. Adjust locknuts according to freedom of caster swing.
3. Test wheelchair for maneuverability.
4. Readjust locknuts if necessary, and repeat STEPS 2‐3 until correct.
5. Snap dust cover into the caster headtube, ensuring that the tabs are under the plastic side shrouds.
Tabs
Dust Cover (Front Edge)
Locknut
Washer
Head Tube
Washer
Fork
NOTE: Components exploded for clarity. There is no need to remove the fork from the base frame.
FIGURE 8.2 Adjusting Caster Assembly
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SECTION 8—WHEELS
Removing/Installing the Front/Rear Caster Assemblies
NOTE: For this procedure, refer to FIGURE 8.3.
Dust Cover
Headtube
NOTE: Front and rear caster assemblies are replaced in the same manner.
NOTE: Ensure tabs are under the side shrouds when installing.
Tabs
Removing
Dust Cover
1. Remove the dust cover.
2. Remove locknut and two washers securing caster assembly to the headtube.
Locknut
Side
Shroud
Installing
Washer
Headtube
NOTE: Components Washer
exploded for clarity. There is no need to Caster Assembly
remove the fork from (Threaded Post)
the base frame.
FIGURE 8.3 Removing/Installing the Front/
Rear Caster Assemblies
1. Insert threaded post of caster assembly into headtube.
2. Using locknut and two washers, secure caster assembly to head tube.
3. Snap dust cover into the headtube.
Removing/Installing the Front Headtube Assembly
NOTE: For this procedure, refer to FIGURE 8.4.
NOTE: Take note of position and orientation of headtube and mounting hardware for installation.
Walking Beam
NOTE: Reverse this procedure to install the front headtube assembly.
Pivot Tube
1. Remove the dust cover.
Top Mounting
Screw
2. Remove the two top mounting screws and bushings that secure the headtube to the walking beam.
Bottom
Mounting Screw
3. Remove the two bottom mounting screws and bushings that secure the head tube to the pivot tube.
Headtube
Top
Mounting
Screw
Bottom
Mounting
Screw
Bushings
FIGURE 8.4 Removing/Installing the Front
Headtube Assembly
4. Remove the headtube from the walking beam and pivot tube.
Part No. 1125038
Dust Cover
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Pronto® M91™and M94™
SECTION 8—WHEELS
Removing/Installing the Drive Wheel
NOTE: For this procedure, refer to FIGURE 8.5.
WARNING
DO NOT use your wheelchair unless it has the proper tire pressure (p.s.i.). DO
NOT overinflate the tires. Failure to follow these suggestions may cause the tire to
explode and cause bodily harm.
If tires are pneumatic, replacement of tire or tube MUST be performed by a qualified technician.
NOTE: If drive wheels or casters are pneumatic, under‐inflation causes excessive wear, which results in poor performance of the tires.
CAUTION
Perform the following procedure in a designated work area to prevent damage to
flooring (carpeting, tile, etc.).
Removing
1. Remove the four beveled hex nuts that secures the drive wheel assembly to the wheel hub.
2. Remove existing drive wheel assembly from wheel hub.
Installing
1. Reinstall new/existing drive wheel assembly onto the wheel hub and torque the four beveled hex nuts to 160‐inch pounds.
2. Repeat procedure for opposite side of wheelchair, if necessary.
Wheel Hub
Drive Wheel Assembly
Beveled Hex Nuts
FIGURE 8.5 Removing/Installing the Drive Wheel
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Part No. 1125038
SECTION 8—WHEELS
Removing/Installing the Drive Wheel Hub
NOTE: For this procedure, refer to FIGURE 8.6 on page 86.
Removing
1. Remove the drive wheel from the wheelchair. Refer to Removing/Installing the Drive Wheel on page 84.
2. Remove hub and mounting hardware. Perform one of the following:
• All M91 300 lbs Limit Wheelchairs and 400 lbs Wheelchairs Built Before 12/19/03:
i. Fold down tab of existing locking tab washer (Detail “A” of FIGURE 8.6).
ii. Remove mounting bolt and locking tab washer (Detail “B” of FIGURE 8.6). Discard existing locking tab washer.
iii. Remove the existing wheel hub and keystock from the drive shaft.
• All M94 Wheelchairs and 400 lbs M91 Wheelchairs built after 12/19/03 ‐ Remove locknut, washer, keystock and existing drive wheel hub from the drive shaft.
Installing
CAUTION
DO NOT apply more than a 1-inch (in length) thin film of anti-seize compound to
the drive shaft. Applying more than 1-inch (in length) can cause the anti-seize compound to leak resulting in damage to flooring (carpet, tile, etc.).
1. Apply a thin film of anti‐seize compound 1‐inch in length to the end of the drive shaft.
2. Reinstall drive wheel hub onto the drive shaft and spin the drive wheel hub to evenly distribute the anti‐seize compound over the entire drive shaft.
3. Remove drive wheel hub from drive shaft.
4. Position the keystock on the drive shaft of the motor/gearbox assembly.
5. Reinstall drive wheel hub onto the drive shaft of the motor/gearbox assembly.
6. To secure the wheel hub to the drive shaft, perform one of the following:
• All M91 300 lbs Wheelchairs and 400 lbs Wheelchairs Built Before 12/19/03:
WARNING
Failure to properly install locking tab washer can result in wheel separation and
potential user injury or property damage. When replacing wheels always use a new
locking tab washer. DO NOT reuse locking tab washers.
i. The locking tab of the locking tab washer MUST be inserted into the hub cutout (Detail “B” of FIGURE 8.6).
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SECTION 8—WHEELS
ii. Using the mounting bolt, washer and new locking tab washer, secure the wheel to the drive shaft (Detail “B” of FIGURE 8.6).
iii. Fold one tab of the locking tab washer UP so that the tab rests against one side of the mounting bolt (Detail “A” of FIGURE 8.6)
• All M94 Wheelchairs and 400 lbs M91 Wheelchairs built after 12/19/03 ‐ Reinstall the washer and locknut and torque locknut to 45 ft‐lbs (540 in‐lbs).
7. Reinstall the drive wheel assembly to the wheelchair. Refer to Removing/Installing the Drive Wheel on page 84.
8. Repeat procedure for the opposite side of the wheelchair, if necessary.
M91 Wheel Hub Hardware for all 300 lbs Limit Wheelchairs and 400 lbs Wheelchairs
Built Before 12/19/03
DETAIL “A”
DETAIL “B”
NOTE: Locking tab washer shown with all tabs folded DOWN to remove/install the mounting bolt.
Locking Tab Washers (Tabs)
Keystock
Mounting Bolt
Drive
Wheel Hub
(Cutout)
Locking Tab Washer (Tab)
Mounting Bolt
NOTE: Locking tab washer shown with one tab folded UP to secure the mounting bolt.
Drive Shaft
Locking Tab Washer
Mounting Bolt
Washer
All M94 Wheelchairs and 400 lbs Limit M91
Wheelchairs built after 12/19/03
Drive Wheel Hub
Keystock
Washer
Drive Shaft
Mounting Bolt
FIGURE 8.6 Removing/Installing the Drive Wheel
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Part No. 1125038
SECTION 8—WHEELS
Replacing the 2-Piece Wheel Rim and/or the Foam
Filled or Pneumatic Tires
NOTE: For this procedure, refer to FIGURE 8.7.
NOTE: When replacing the 2‐piece wheel rim, DO NOT remove tire. Replacement 2‐piece wheel rims are shipped assembled with a new tire. Refer to Removing/Installing the Drive Wheel on page 84 to remove the existing drive wheel and install the new 2‐piece wheel rim and tire.
WARNING
When replacing the hub of a pneumatic tire, ALWAYS deflate tire before
removing/installing hub - otherwise, injury or damage may occur. Failure to observe
this warning can result in sudden, violent rim separation and possible injury.
1. Remove drive wheel from wheelchair. Refer to Removing/Installing the Drive Wheel on page 84.
2. Deflate existing pneumatic tire.
3. Remove the five existing mounting screws that secure the existing outer rim and inner rim. 4. Separate the two halves of the rim and remove the existing tire. Discard existing tire.
NOTE: When installing the NEW pneumatic tire, if necessary, place the inner tube into the tire.
NOTE: When installing the outer rim into a pneumatic tire, ensure the valve stem of the inner tube protrudes through the stem opening in the outer rim.
Inner Rim
Tire
Outer
Rim
5. Insert the outer rim and inner rim into the new/existing tire.
6. Using the five existing mounting screws secure the outer rim to the inner rim and hub. Torque mounting screws to 160‐200 in‐lbs.
Mounting
Screws
7. If pneumatic, fill tire to correct air pressure as noted on tire side wall.
FIGURE 8.7 Replacing the 2-Piece Wheel
Rim and/or the Foam Filled or Pneumatic
Tires
8. Reinstall the drive wheel onto the wheelchair. Refer to Removing/
Installing the Drive Wheel on page 84.
Part No. 1125038
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Pronto® M91™and M94™
SECTION 9—SHROUDS/FRAME
SECTION 9—SHROUDS/FRAME
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 Shrouds
NOTE: For this procedure, refer to FIGURE 9.1 on page 90.
WARNING
To prevent cracking the plastic shroud material, DO NOT overtighten the mounting screws.
NOTE: Reverse this procedure to install the shrouds.
1. Disconnect the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
2. Remove or tilt the seat assembly. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
3. Perform one of the following:
• Top Shroud ‐ Lift up on rear edge of top shroud to release the four hook and loop strips that secure the top shroud to the base frame.
• Right and Left Side Shroud ‐ i. Remove the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84.
ii. Remove the five mounting screws that secure the shroud to the side frame assembly and remove side shroud from side frame.
NOTE: Shorter mounting screws are used to secure the top rear of side shrouds (Detail “A” of FIGURE 9.1).
• Shroud Plate ‐ Remove the two mounting screws and washers securing the shroud plate to the side frame assembly (Detail “A” of FIGURE 9.1) and remove shroud plate from side frame. • Front Shroud ‐ Remove the two mounting screws that secure the front shroud to the base frame (Detail “B” of FIGURE 9.1) and remove front shroud from the base frame.
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SECTION 9—SHROUDS/FRAME
• Rear Shroud ‐ M91 Before 7/14/03 ‐ Perform the following:
NOTE: The rear shroud on the M91 built before 7/14/03 can be opened and closed with out being removed from the wheelchair. The rear shroud should be removed only if being replaced.
To open the rear shroud refer to STEP ii below. i. Open rear shroud by turning the knob 90° until detent catch is felt, then slide rear shroud toward the rear casters and lift top edge away from the rear of the wheelchair frame (Detail “C” of FIGURE 9.1).
ii. Grasp the bottom edges of the rear shroud sides.
iii. Gently pull the rear shroud sides away from the channels in the rear frame until the rear shroud mounting pins are clear of the wheelchair frame and remove the rear shroud from the wheelchair frame. • Rear Shroud ‐ M91 After 12/18/03 and M94 Wheelchairs ‐ Perform the following:
i. Remove the two mounting screws and locknuts securing the charger port to the rear shroud.
ii. Remove the mounting bolt and washer securing the rear shroud to the base frame and remove rear shroud from base frame (Detail “C” of FIGURE 9.1).
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SECTION 9—SHROUDS/FRAME
DETAIL “A” - Top Shroud, Side Shrouds, Shrouds Plates and Front Shroud
Top
Shroud
Mounting
Screws
Shorter
Mounting Screw
Side Frame
Assembly
Mounting
Screw
Side
Shroud
Front Shroud
DETAIL “C”
Hood and Loop
Strips
Shroud Plate
NOTE: Rear Shroud After 7/14/03.
Mounting Screws and Washers
DETAIL “B”
Locknuts
NOTE: Rear Shroud Before 7/14/03.
Rear Shroud Closed
Rear
Shroud
Knob
Rear Shroud
Open
Base
Frame
Channels
(Rear Frame)
Rear Shroud
Sides
Mounting Screws
Rear
Shroud
Washer
Mounting Bolt
FIGURE 9.1 Removing/Installing the Shrouds
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Part No. 1125038
SECTION 9—SHROUDS/FRAME
Removing/Installing the Pivot Tube
NOTE: For this procedure, refer to FIGURE 9.2.
NOTE: Reverse this procedure to reassemble the side frame.
1. Remove the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84.
2. Remove the side shroud and shroud plate. Refer to Removing/Installing the Shrouds on page 88.
3. Remove the front head tube assembly. Refer to Removing/Installing the Front Headtube Assembly on page 83.
4. Remove the locknut and spacer securing the pivot tube to the mounting pin.
NOTE: Two nylon bushings are located in each end of the pivot tube.
5. Remove the pivot tube from the lower mounting pin.
Side Frame
Spacer
Mounting Pin
Locknuts
Pivot Tube
Nylon Bushings
FIGURE 9.2 Removing/Installing the Pivot Tube
Removing/Installing the Walking Beam and/or SureStep
Springs
WARNING
Replacement of the walking beam and or the SureStep spring MUST be performed
by Invacare service personnel ONLY - otherwise injury or damage may result.
Part No. 1125038
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Pronto® M91™and M94™
SECTION 9—SHROUDS/FRAME
Removing/Installing the Walking Beam Assembly,
Stability Lock Assembly and/or Swing Arm
NOTE: For this procedure, refer to FIGURE 9.3 on page 94.
NOTE: Take note of position and orientation of the stability lock, swing arm and mounting hardware before removal.
Removing
1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
2. Remove the batteries. Refer to Installing/Removing the Batteries on page 103.
3. Remove the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84. 4. Remove the side shroud. Refer to Removing/Installing the Shrouds on page 88.
5. Remove the motor. Refer to Removing/Installing the Motor on page 98.
CAUTION
Use caution when removing tension from the extension spring - otherwise, injury
may result.
6. Use a screwdriver to release the extension spring from the spring mount on the swing arm assembly. Remove the extension spring from the pivot plate and set aside.
CAUTION
Use extreme caution when removing tension from the torsion spring - otherwise,
injury may result.
7. Use a screwdriver to release the end of the torsion spring resting on the pin on the lock plate. 8. Remove the lock plate. Allow the torsion spring to rest in place.
9. Remove the walking beam mounting screw, washer and nut securing the walking beam assembly, torsion spring and spring spacer to the frame.
10. Remove the two mounting screws securing the pivot rack to the pivot link.
11. Remove the pivot rack from the pivot link.
12. Remove the front mounting screw, two nylon washers, O‐ring, cupped washer, locknut securing the pivot link to the wheelchair frame mounting hole (Detail“C” of FIGURE 9.3).
13. Remove the long shoulder screw and locknut securing the pivot link to the rear frame mounting hole.
14. Perform one of the following:
• Removing the Stability Lock Assembly Hardware ONLY ‐ i. Remove the two shoulder screws and one washer securing the motor rack to the walking beam.
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SECTION 9—SHROUDS/FRAME
ii. Remove the motor rack from the walking beam.
• Removing the Swing Arm ‐ i. Remove the long shoulder screw and locknut securing the swing arm to the wheelchair frame.
ii. Remove the swing arm from the wheelchair frame.
Installing
1. Perform one of the following:
• Installing the Stability Lock Assembly ONLY ‐ i. Ensure compression spring is positioned in the middle hole of the motor rack.
ii. Align the motor rack under the walking beam (Detail “A” of FIGURE 9.3).
iii. Using two shoulder screws and one washer, secure the motor rack to the walking beam.
• Installing the Swing Arm ‐ i. Align swing arm with wheelchair frame.
ii. Insert long shoulder screw through swing arm and wheelchair frame and secure using a locknut. Securely tighten. 2. Align pivot link front mounting hole with wheelchair frame mounting hole.
3. Using the front mounting screw, two nylon washers, O‐ring, cupped washer and locknut, secure the pivot link to the wheelchair frame.
4. Using the shoulder screw and locknut, secure the pivot link to the swing arm mounting hole.
5. Align the pivot rack from the pivot link.
6. Using two mounting screws secure the pivot rack to the pivot link.
7. Using the walking beam mounting screw, washer and nut, secure the walking beam assembly, torsion spring and spring spacer to the frame.
CAUTION
Use extreme caution when installing the torsion spring onto the lock plate pin otherwise, injury may result.
8. Use a screwdriver to pry the torsion spring open (Detail “B” of FIGURE 9.3).
9. Install the lock plate. Release the torsion spring onto the pin on the lock plate (Detail “B” of FIGURE 9.3).
10. Place the extension spring onto the spring mount on the swing arm.
CAUTION
Use caution when installing the extension spring onto the pivot plate spring mount otherwise, injury may result.
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SECTION 9—SHROUDS/FRAME
11. Use a screwdriver to place the extension spring onto the spring mount on the pivot plate.
12. Install the motor. Refer to Removing/Installing the Motor on page 98.
13. Install the batteries. Refer to Installing/Removing the Batteries on page 103.
14. Install the side shroud. Refer to Removing/Installing the Shrouds on page 88.
15. Install the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84.
16. Install the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35. Swing
Arm
Long Shoulder
Frame
Screw
Mounting Hole
Locknuts
Rear Frame
Mounting Hole
Front Mounting Screw
Pivot
Mounting Rack
Screws
Walking Beam Assembly
Lock Plate Pin
Lock Plate
Walking Beam
Mounting Screw
Shoulder
Screws
Spring Spacer
Torsion Spring
Shoulder
Nylon Screw
Extension
Washer
Spring
Pivot Link
Mounting Hole
Pivot
Plate
Cupped
Washer
DETAIL “A”
Washer
Walking Beam
Compression
Spring
Locknut
O-Ring
Motor Rack
(Center Hole)
DETAIL “C”
DETAIL “B”
Pry spring open
Spring
Install relaxed
spring
Nylon
Washer
Insert lock plate and release
spring onto pin on lock plate
Pin
Spring
Lock
Plate
FIGURE 9.3 Removing/Installing the Walking Beam Assembly, Stability Lock Assembly and/or Swing Arm
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Part No. 1125038
SECTION 9—SHROUDS/FRAME
Removing/Installing the Traction Control Device
NOTE: For this procedure, refer to FIGURE 9.4.
NOTE: Take note of position and orientation of the traction control device and mounting hardware before removal.
Removing
1. Remove the batteries. Refer to Installing/Removing the Batteries on page 103.
2. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
3. Remove the side shroud. Refer to Removing/Installing the Shrouds on page 88.
CAUTION
Use caution when removing the extension spring from the swing arm spring mount
- otherwise, injury may result.
4. Use a screwdriver to remove the extension spring from the motor mount bracket spring mount. Remove the extension spring from the pivot plate spring mount. Set extension spring aside.
5. Remove the torsion spring from the pivot plate spring mount (Detail “A” of FIGURE 9.4). Set torsion spring aside.
6. Remove the mounting screw and two washers and torsion spring securing the pivot plate to the wheelchair frame (Detail “A” of FIGURE 9.4).
Motor Mount
Bracket
Extension
Spring
Torsion
Spring
Washers
Wheelchair Frame
Mounting Hole
Pivot Plate
Mounting
Mounting Hole
Screw
DETAIL “A”
Motor Mount Bracket
Spring Mount
Traction Control Device
(shown in place)
FIGURE 9.4 Removing/Installing the Traction Control Device
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SECTION 9—SHROUDS/FRAME
Installing
1. Align pivot plate mounting hole with wheelchair frame mounting hole.
2. Using the mounting screw and two nylon washers secure the pivot plate to the wheelchair frame.
3. Put the torsion spring pin into the hole in the pivot plate. Put the other end of the torsion spring around the spring mount on the pivot plate.
4. Rotate the swing arm back into position.
5. Place the extension spring onto the spring mount on the motor mount bracket.
CAUTION
Use caution when installing the extension spring onto the spring mount on the pivot
plate - otherwise, injury may result.
6. Put the extension spring onto the pivot plate.
7. Install the batteries. Refer to Installing/Removing the Batteries on page 103.
8. Install the side shroud. Refer to Removing/Installing the Shrouds on page 88.
9. Install the drive wheel. Refer to Removing/Installing the Drive Wheel on page 84.
10. Install the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
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Part No. 1125038
SECTION 10—MOTORS
SECTION 10—MOTORS
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that all
attaching hardware is tightened securely.
ALWAYS turn the wheelchair power OFF BEFORE repairing or servicing the
wheelchair, otherwise injury or damage may occur.
Engaging/Disengaging Motor Release Lever
WARNING
DO NOT engage or disengage the motor release lever until the On/Off switch on
the joystick is in the OFF position.
CAUTION
Ensure both motor release levers are fully engaged BEFORE driving the wheelchair
NOTE: For this procedure, refer to FIGURE 10.1.
NOTE: The motor release lever disengagement/engagement allows freewheeling or joystick controlled operation. Freewheeling allows an attendant to maneuver the wheelchair without power.
1. Locate the motor release levers on the motors protruding through the shrouds by the rear springs.
2. Perform one of the following:
Motor Release
Lever
• To disengage the motor release levers ‐ NOTE: This allows the chair to freewheel for pushing if necessary
i. Slide the motor release lever towards the outside of the wheelchair (free wheel position) (Detail “A” of FIGURE 10.1).
DETAIL “A”
Towards
Outside of
Wheelchair
Towards Center
of Wheelchair
• To engage the motor release levers ‐ Motor Release Lever
Disengaged
(Freewheel Mode)
NOTE: This allows the motors to drive the wheels.
i. Slide the motor release lever towards the center of the wheelchair (drive position) (Detail “A” of FIGURE 10.1).
Part No. 1125038
Motor Release Lever Engaged (Drive Mode)
FIGURE 10.1 Engaging/Disengaging Motor
Release Lever
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Pronto® M91™and M94™
SECTION 10—MOTORS
Removing/Installing the Motor
NOTE: For this procedure, refer to FIGURE 10.2.
NOTE: Reverse this procedure to install the motor.
NOTE: Removing the drive wheel, while not necessary (unless replacing the motor), may improve access to the motor. Refer to Removing/Installing the Drive Wheel on page 84.
1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
2. Remove the side shroud. Refer to Removing/Installing the Shrouds on page 88.
3. Disconnect the motor lead (not shown).
NOTE: Long mounting screws are used on the same side of the motor as the drive shaft. 4. Remove the two motor release pins securing the motor plate to the walking beam and remove the motor assembly from the walking beam.
5. Remove the three long mounting screws and three short mounting screws securing the motor to the motor plate (FIGURE 10.2).
6. If necessary, repeat STEPS 2‐5 for the motor on the other side.
NOTE: Drive wheel not shown.
Walking Beam
Motor Release Pins
Three Long Mounting
Screws
Three Short Mounting
Screws
Motor
Motor Plate
FIGURE 10.2 Removing/Installing the Motor
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Part No. 1125038
SECTION 10—MOTORS
Inspecting/Replacing Motor Brushes
NOTE: For this procedure, refer to FIGURE 10.3 on page 100.
NOTE: It is very important to note which way the brush comes out of the motor. The brush MUST be placed into the motor exactly the same way to ensure good contact with the commutator.
1. Turn power off.
2. Remove the motor. Refer to Removing/Installing the Motor on page 98.
NOTE: There are four motor brushes on M91/M94 motors located under the brush caps on the motor housing. If these caps are hard to remove they are either overtightened or the motor has become very hot. Let motors cool. If caps still cannot be removed, it is recommended that the motor be sent to Invacare Technical Services for inspection/repair.
3. Remove the brush cap securing the motor brush into the motor housing.
4. Remove the motor brush and perform the following: A. Inspect the commutator (not shown) for damage.
B. Inspect the motor brush thoroughly for excessive wear or chips in the brush and perform one of the following:
• If motor brush is in good condition, (i.e., the end of the brushes are smooth and shiny), reinstall existing brush.
• If motor brush is in bad condition, brush is worn or damaged, discard immediately and install new brush.
5. Reinstall motor brush and brush cap into the motor housing.
6. Repeat STEPS 3‐5 until all four motor brushes have been inspected/replaced.
7. Reinstall the motor. Refer to Removing/Installing the Motor on page 98.
NOTE: Repeat STEPS 2‐7 for the opposite motor.
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SECTION 10—MOTORS
8. If new motor brush was installed, perform the following process:
NOTE: This process, also called Brush Burn‐in or Finger Printing Process, is necessary to seat the brush to the commutator plates inside the motor for optimum performance of the motor.
NOTE: A motor with only one brush replaced will only carry a small percentage of its rated load capacity until the new brush is burned in.
WARNING
DO NOT leave the wheelchair unattended while performing this procedure - otherwise damage to wheelchair and/or property may occur.
NOTE: This procedure must be performed with little or no load on the motor.
A. Put the wheelchair on blocks so that the drive wheels do not contact the ground.
NOTE: For steps B and D, use a rubber band to hold the driver control in the direction needed or program the chair for latched driving. Refer to the electronics manual for latched programming instructions.
B. Run the motors forward for one hour.
C. Turn motors off and allow 30 minutes for motors to cool off.
D. Run the motors in reverse for one hour.
E. When process is complete, remove wheelchair from blocks and test drive the wheelchair.
NOTE: If wheelchair still does not perform properly, call Invacare Technical Service at 1‐800‐
832‐4707.
Brush Caps
Motor Brush
Commutator
(Inside Motor Housing)
Brush
Motor Housing
FIGURE 10.3 Inspecting/Replacing Motor Brushes
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Part No. 1125038
SECTION 10—MOTORS
Electro-Mechanical Parking Brake Testing
NOTE: For this procedure, refer to FIGURE 10.4.
1. On the four‐pin motor connector, locate the side‐by‐side connectors in the black housings (FIGURE 10.4).
2. Set the digital multimeter to read ohms (Ω).
3. Measure the resistance between the two brake contacts. A normal reading is between 45‐100 ohms depending on the motor. A reading of 0 ohms (Ω) or a very high reading; i.e., MEG ohms or O.L. (out of limit) indicates a shorted brake or an open connection respectively. If either condition exists, send the motor to Invacare Technical Service for inspection/repair.
WARNING
A shorted electro-mechanical brake will damage the brake output section in the
controller. DO NOT connect a shorted electro-mechanical brake to a good controller module. A shorted brake MUST be replaced.
NOTE: A bad motor can damage the controller module but a bad controller will NOT damage a motor.
.
MKIV 4-pin Motor Connector
Cap
MK5 and MK6i 4-pin Motor Connector
Motor
Cap
Motor
4 Pin Motor
Connector
Black
Black
Red
Black
4 Pin Motor Connector
FIGURE 10.4 Electro-Mechanical Parking Brake Testing
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SECTION 11—BATTERIES
SECTION 11—BATTERIES
WARNING
Make sure power to the wheelchair is OFF before performing this section.
NEVER allow any of your tools and/or battery cable(s) to contact BOTH battery
terminal(s)/post(s) at the same time. An electrical short may occur and serious
personal injury or damage may occur.
The use of rubber gloves is recommended when working with batteries.
Always use a battery lifting strap when lifting a battery. It is the most convenient
method and assures that the battery acid will not spill. It also helps to prolong the
life of the battery.
Avoid storage or use near external flame or combustible products.
DO NOT tip the batteries. Keep the batteries in an upright position.
Invacare strongly recommends that battery installation and battery replacement
always be done by a qualified technician.
After ANY adjustments, repair or service and BEFORE use, make sure all attaching
hardware is tightened securely - otherwise injury or damage may result.
Battery terminal configuration shown below MUST be used. Batteries that have the
reversed terminal configuration MUST NOT be used - otherwise serious injury or
damage may occur.
Mounting Holes
Do Not Use
POSITIVE
(+) Battery
Terminal
NEGATIVE (-)
Battery Terminal
POSITIVE
(+) Battery
Terminal
NEGATIVE
(-) Battery
Terminal
CAUTION
When connecting the battery cables to the battery(ies), the battery cable(s) MUST
be connected to the battery terminal(s)/post(s) as shown in FIGURE 11.3 on page
108 - otherwise damage to the battery may result.
For proper battery connection, batteries MUST use post style terminals with
mounting holes through the terminal.
NOTE: If there is battery acid in the bottom of the battery tray or on the sides of the battery(ies), apply baking soda to these areas to neutralize the battery acid. Before reinstalling the existing or new battery(ies), clean the baking soda from the battery tray or battery(ies) being sure to avoid contact with skin and eyes. Determine source of contamination. Never install/reinstall a battery with a cracked or otherwise damaged case.
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Part No. 1125038
SECTION 11—BATTERIES
Installing/Removing the Batteries
NOTE: For this procedure, refer to FIGURE 11.1 on page 104 and FIGURE 11.2 on page 105.
NOTE: Have the following tools available:
TOOL
QTY
COMMENTS
Battery Lifting Strap
1
Supplied
1/2-inch (6 pt) Box Wrench
1
Not Supplied
7/16-inch (6pt) Box Wrench
1
Not Supplied
3/8-inch (6pt) Box Wrench
1
Not Supplied
Diagonal Cutters
1
Not Supplied
NOTE: Wheelchairs with MKIV Electronics: Wiring harness used with the front battery has two connectors, one to the rear battery wiring harness and one to the Controller cable.
NOTE: Wheelchairs with MKIV Electronics: Wiring harness used with the rear battery has one connector to the front battery wiring harness.
NOTE: Wheelchairs with MK5™ Electronics: The front battery has three connectors ‐ two to the rear battery wiring harness (RED and BLACK) and one to the controller cable (RED), and the rear battery has two connectors (RED and BLACK) to the front battery wiring harness.
Installing
1. Place the wheelchair in a well ventilated area where work can be performed without risking damage to carpeting or floor covering.
2. Verify the joystick On/Off switch is in the OFF position and disconnect joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
3. Perform one of the following:
• Wheelchairs without Formula PTO Plus ‐ Remove the seat. Refer to Removing/
Installing or Tilting the Seat Assembly on page 35.
• Wheelchairs with Formula PTO Plus ‐ Tilt the seat back. Refer to Removing/
Installing or Tilting the Seat Assembly on page 35.
4. Remove the top shroud. Refer to Removing/Installing the Shrouds on page 88.
5. If necessary, disconnect right and left motor leads to allow access to the front of the battery tray.
6. Move aside the motor leads and controller cable to allow unobstructed access to the front of the battery tray.
NOTE: Perform this section on one battery at a time starting with the rear battery. Repeat STEP 6 to position the remaining battery into the battery tray.
7. Perform one of the following to position the battery into the battery tray:
• Batteries With Built In Lifting Strap ‐ Use built in lifting strap to position battery into the battery tray (Detail “A” of FIGURE 11.1).
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SECTION 11—BATTERIES
• Batteries Without Built In Lifting Strap ‐ Use the battery lifting strap to position battery into the battery tray. When battery is in proper position, remove lifting strap (Detail “B” of FIGURE 11.1).
8. Using the battery retaining strap, secure the two batteries into the battery tray.
9. If necessary, connect the wiring harness to the two batteries. Refer to Connecting/
Disconnecting the Battery Wiring Harness on page 106.
10. Reconnect right and left motor leads to allow access to the FRONT of the battery tray, if disconnected in STEP 5.
DETAIL “A” - BATTERIES WITH BUILT-IN
LIFTING STRAPS
DETAIL “B” - BATTERIES WITHOUT
BUILT-IN LIFTING STRAPS
Built-in Lifting
Straps
Rear
Battery
Battery Lifting Straps
Front
Battery
Battery
Tray
Battery
Terminals/Posts
Battery
FIGURE 11.1 Batteries with/without Lifting Straps
11. Connect the front battery to the controller (RED connector). Refer to FIGURE 11.2 on page 105.
12. Connect the rear battery to the front battery (RED and BLACK connectors). Refer to FIGURE 11.2 on page 105.
13. Reinstall the top shroud. Refer to Removing/Installing the Shrouds on page 88.
14. Perform one of the following:
• Wheelchairs without Formula PTO Plus ‐ Reinstall the seat. Removing/Installing or Tilting the Seat Assembly on page 35.
• Wheelchairs without Formula PTO Plus ‐ Tilt the seat forward. Removing/
Installing or Tilting the Seat Assembly on page 35.
15. Connect the joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
NOTE: New battery(ies) MUST be fully charged BEFORE using, otherwise the life of the battery(ies) will be reduced.
16. If necessary, charge the battery(ies). Refer to owner’s manual shipped with wheelchair.
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Part No. 1125038
SECTION 11—BATTERIES
DETAIL “A” MKIV Electronics
RED Connector from
Battery to Controller
Front of Wheelchair
RED Controller Connector
Front Battery
BLACK Front NEGATIVE (-)
Battery Terminal Mounting
Screw, Nut and Fuse Hardware
(Terminal Cap Shown)
Tie Wrap
RED Front POSITIVE (+)
Battery Terminal Mounting
Screw, Nut and Fuse Hardware
(Terminal Cap Shown)
Tie
BLACK Battery Connector
RED Battery Connector
GREY Rear NEGATIVE (-)
Battery Terminal Mounting Screw,
Nut and Fuse Hardware*
RED Rear POSITIVE (+) Battery
Terminal Mounting Screw, Nut and
Fuse Hardware*
Rear Battery
*NOTE: Terminal cap removed for clarity.
Retaining Strap
Rear of Wheelchair
DETAIL “B” MK5 and MK6i Electronics
RED Connector from
Battery to Controller
Front of Wheelchair
Front Battery
BLACK Front NEGATIVE (-)
Battery Terminal Mounting
Screw, Nut and Fuse Hardware
(Terminal Cap Shown)
Tie Wrap
RED Front POSITIVE (+)
Battery Terminal Mounting
Screw, Nut and Fuse Hardware
(Terminal Cap Shown)
Tie
BLACK Battery Connectors
GREY Rear NEGATIVE (-)
Battery Terminal Mounting Screw,
Nut and Fuse Hardware*
RED Battery Connectors
RED Rear POSITIVE (+) Battery
Terminal Mounting Screw, Nut and
Fuse Hardware*
RED Controller Connector
(Not Shown)
Rear Battery
Rear of Wheelchair
Retaining Strap
*NOTE: Terminal cap removed for clarity.
FIGURE 11.2 Installing/Removing the Batteries
Removing
1. Place the wheelchair in a well ventilated area where work can be performed without risking damage to carpeting or floor covering.
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SECTION 11—BATTERIES
2. Verify the joystick ON/OFF switch is in the OFF position and disconnect joystick. Refer to Disconnecting/Connecting the Joystick on page 112.
3. Perform one of the following:
• Wheelchairs without Formula PTO Plus ‐ Remove the seat. Refer to Removing/
Installing or Tilting the Seat Assembly on page 35.
• Wheelchairs with Formula PTO Plus ‐ Tilt the seat back. Refer to Removing/
Installing or Tilting the Seat Assembly on page 35.
4. Remove the top shroud. Refer to Removing/Installing the Shrouds on page 88.
5. If necessary, disconnect right and left motor leads to allow access to the front of the battery tray.
6. Disconnect the front battery from controller (RED connector). Refer to FIGURE 11.2.
7. Move aside the motor leads and controller cable to allow unobstructed access to the front of the battery tray.
8. Disconnect the rear battery from the front battery (RED and BLACK connectors). Refer to FIGURE 11.2.
9. If necessary, disconnect the wiring harness from batteries. Refer to Connecting/
Disconnecting the Battery Wiring Harness on page 106.
10. Unfasten the retaining strap that secures the two batteries in the battery tray.
NOTE: Perform this section on one battery at a time starting with the FRONT battery. Repeat STEP 10 to remove remaining battery from battery tray.
11. Perform one of the following to remove the battery from the battery tray:
• Batteries With Built‐in Lifting Strap‐ Use built in lifting strap to remove the battery from the battery tray (Detail “A” of FIGURE 11.1).
• Batteries Without Built‐in Lifting Strap‐ Use the battery lifting strap to remove the battery from the battery tray (Detail “B” of FIGURE 11.1).
Connecting/Disconnecting the Battery Wiring Harness
NOTE: For this procedure, refer to FIGURE 11.3 on page 108.
NOTE: Perform this section on one battery at a time starting with the front battery.
NOTE: Wheelchairs with MKIV™ Electronics: Wiring harness used with the front battery has two connectors; one to the rear battery wiring harness and one to the Controller cable.
NOTE: Wheelchairs with MKIV™ Electronics: Wiring harness used with the rear battery has one connector to the front battery wiring harness.
NOTE: Wheelchairs with MK5 Electronics: The front battery has three connectors ‐ two to the rear battery wiring harness (RED and BLACK) and one to the controller cable (RED), and the rear battery has two connectors (RED and BLACK) to the front battery wiring harness.
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Part No. 1125038
SECTION 11—BATTERIES
NOTE: Both the front and rear wiring harnesses are shipped with the POSITIVE (+) RED battery cable and mounting screw connected. Use the exposed, threaded portion of the mounting screw to secure the POSITIVE (+) RED cable to the POSITIVE (+) terminal.
WARNING
DO NOT remove fuse or mounting hardware from POSITIVE (+) RED battery
cable/mounting screw.
All battery terminal covers (two [2] on the front battery and two [2] on the rear
battery) MUST be installed prior to use.
Connecting
1. Peel back RED battery terminal cover to expose RED battery cable connection to battery terminal.
2. Peel back BLACK battery terminal cover from BLACK battery cable on front battery or GREY battery terminal cover from BLACK battery cable on rear battery.
3. Using the mounting screw and nut, secure the NEGATIVE (‐) BLACK battery cable to NEGATIVE (‐) battery terminal/post as shown in FIGURE 11.3 on page 108.
4. Using the mounting screw washer and nut, secure the POSITIVE (+) RED battery cable to POSITIVE (+) battery terminal/post.
5. Verify wiring harness is correctly installed and securely tightened.
6. Verify proper battery orientation.
7. Reposition battery terminal covers over battery post(s).
8. Using new tie‐wraps, secure the terminal covers to the battery terminals.
9. Repeat STEPS 1‐8 to install and connect the rear battery to the rear battery harness.
Disconnecting
1. Remove the existing tie‐wraps that secure the battery terminal covers to the battery terminals.
2. Peel back RED battery terminal cover to expose POSITIVE (+) battery cable connection to battery terminal.
3. Peel back BLACK battery terminal cover from NEGATIVE (‐) BLACK battery cable on front battery or GREY battery terminal cover from NEGATIVE (‐) battery cable on rear battery.
4. Remove the mounting screw, washer and nut that secure the POSITIVE (+) RED battery cable to the POSITIVE (+) battery terminal/post.
5. Remove the mounting screw and nut that secure the NEGATIVE (‐) BLACK battery cable to the NEGATIVE (‐) battery terminal/post.
6. Set wiring harness aside.
7. Repeat STEPS 1‐6 to disconnect the rear battery from the rear battery harness.
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SECTION 11—BATTERIES
MKIV Electronics
POSITIVE (+) Battery Cable, Mounting
Screw with Fuse Hardware
Nut
Washer
NEGATIVE (-) Battery Cable
POSITIVE (+)
Battery Terminal
Mounting Screw
Nut
Tie-Wrap
Battery
Tie-Wrap
NEGATIVE (-)
Battery Terminal
MK5 and MK6i Electronics
POSITIVE (+)
Battery Cable,
Mounting Screw with
Fuse Hardware
NEGATIVE (-)
Battery Cable
NEGATIVE (-)
Battery Terminal
Nut
Tie-Wrap
Mounting
Screw
Locknut
Tie-Wrap
Battery
POSITIVE (+)
Battery Terminal
FIGURE 11.3 Connecting/Disconnecting the Battery Wiring Harness
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Part No. 1125038
SECTION 11—BATTERIES
Replacing the On-Board Battery Charger
WARNING
DO NOT replace the battery charger fuse with anything other than a 250V 6.3 Amp
fuse. Otherwise, equipment damage and/or personal injury may occur.
DO NOT attempt to remove the battery charger with power applied to the wheelchair. Otherwise, equipment damage and/or personal injury may occur.
NOTE: For this procedure, refer to FIGURE 11.4 on page 111.
NOTE: On‐board charger not used on wheelchairs equipped with a powered seating system.
NOTE: Take note of position and orientation of battery charger wires and tie‐wraps for reinstallation.
NOTE: The output of the battery charger is fused with a 250V, 6.3 amp fuse. The fuse holder is located at the top of the charger as it is mounted to the wheel chair. This fuse should be checked first before replacing the battery charger for improper operation. Refer to Replacing the On‐Board Battery Charger on page 109. NOTE: Reverse this procedure to install the on‐board battery charger.
1. Remove the batteries from the wheelchair. Refer to Installing/Removing the Batteries on page 103.
2. Remove the rear shroud. Refer to Removing/Installing the Shrouds on page 88.
3. Perform one of the following:
• M91 Before 12/19/03 (Detail “A” of FIGURE 11.4)
i. Open rear shroud by turning the knob 90° until detent catch is felt, then slide rear shroud toward the rear casters and lift top edge away from the rear of the wheelchair frame.
ii. Disconnect the battery charger cable from the controller charger cable.
iii. Release hook and loop strap securing charger to the wheelchair frame
• M91 Built between 12/18/03 to 4/1/04 (Detail “A” of FIGURE 11.4)
i. Remove the rear shroud. Refer to Removing/Installing the Shrouds on page 88.
ii. Disconnect the battery charger cable from the controller charger cable.
iii. Release hook and loop strap securing charger to the wheelchair frame.
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SECTION 11—BATTERIES
• M91 After 3/31/04 and M94 wheelchairs (Detail “B” of FIGURE 11.4) i. Remove the front shroud. Refer to Removing/Installing the Shrouds on page 88.
ii. Remove the three tie‐wraps securing the charger cable to the wheelchair frame.
iii. Disconnect the charger cable from the AUX port of the controller.
iv. Remove the two mounting screws securing the charger to the wheelchair frame.
4. Remove charger from wheelchair frame.
5. Place the new battery charger against the wheelchair frame.
6. Perform one of the following:
• M91 Before 12/19/03 (Detail “A” of FIGURE 11.4) i. Using the hook and loop strap, secure the charger to the wheelchair frame.
ii. Route the battery charger cable to the right side (from the rear of the wheelchair) of the battery charger body.
iii. Connect the battery charger cable from the controller charger cable.
iv. Close the rear shroud by tilting the rear shroud towards the wheelchair and push forward. Turn the knob 90° until detent is felt to lock rear shroud.
• M91 Built between 12/18/03 to 4/1/04 (Detail “A” of FIGURE 11.4)
i. Using the hook and loop strap, secure the charger to the wheelchair frame.
ii. Route the battery charger cable to the right side (from the rear of the wheelchair) of the battery charger body.
iii. Connect the battery charger cable from the controller charger cable.
• M91 After 1/31/04 and M94 wheelchairs (Detail “B” of FIGURE 11.4)
i. Using the two mounting screws, secure the charger tot he wheelchair frame.
ii. Connect the charger cable from the AUX port of the controller.
iii. Route the battery charger cable to the left side wheelchair frame (from the rear of the wheelchair).
iv. Using the three new tie‐wraps, secure the charger cable to the wheelchair frame.
v. Connect the charger cable from the AUX port of the controller.
7. Using hook and loop strap provided, wrap the AC cord and secure to back of wheelchair.
8. If necessary, install the rear shroud. Refer to Removing/Installing the Shrouds on page 88.
9. Install the batteries. Refer to Installing/Removing the Batteries on page 103.
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Part No. 1125038
SECTION 11—BATTERIES
DETAIL “a”
Battery
Charger
Battery
Charger Cable
DETAIL “B”
Controller
Charger Cable
Battery
Charger Cable
Mounting
Screws
Controller
Hook and
Loop Strips
Wheelchair
Frame
Battery
Charger
Wheelchair
Frame
FIGURE 11.4 Replacing the On-Board Battery Charger
Part No. 1125038
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Pronto® M91™and M94™
SECTION 12—ELECTRONICS
SECTION 12—ELECTRONICS
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that 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.
Disconnecting/Connecting the Joystick
Disconnecting
MKIV RII/MK5 Joysticks
NOTE: For this procedure, refer to FIGURE 12.1 on page 114.
1. Loosen the thumb screws on the joystick connector.
2. Disconnect the joystick connector from the controller connector. MKIV “A” Joysticks
NOTE: For this procedure, refer to FIGURE 12.1 on page 114.
1. Loosen the threaded collar on the joystick connector.
2. Disconnect the joystick connector from the controller connector.
SPJ+ Joysticks
NOTE: For this procedure, refer to FIGURE 12.2 on page 115.
Hold the light GREY collar portion of the joystick connector with one hand and the controller connector on the wheelchair in the other and disconnect them by pulling them apart.
MPJ+ Joysticks
NOTE: For this procedure, refer to FIGURE 12.3 on page 115.
1. Pull the latch away from the joystick connector.
2. Disconnect the joystick connector from the remaining connectors.
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Part No. 1125038
SECTION 12—ELECTRONICS
Connecting
MKIV RII/MK5 Joysticks
NOTE: For this procedure, refer to FIGURE 12.1 on page 114.
1. Align the joystick connector with the controller connector. 2. Secure the joystick connector to the controller connector using the thumb screws on the controller connector.
MKIV “A” Joysticks
NOTE: For this procedure, refer to FIGURE 12.1 on page 114.
1. Align the joystick connector with the controller connecter. 2. Secure the joystick connector to the controller connector using the threaded collar on the controller connector.
WARNING
The excess joystick cable must be coiled and tie-wrapped to the rear of the seat
frame to ensure that cable does NOT become entangled or damaged during normal
operation of seating system - otherwise injury or damage may result.
3. If necessary, coil and tie wrap excess joystick cable to rear of seat frame.
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SECTION 12—ELECTRONICS
MKIV RII/MK5 Joysticks
MKIV “A” Joystick
Thumb Screws
Joystick Connector
Controller
Connector
Controller
Connector
Joystick Connector
FIGURE 12.1 Disconnecting/Connecting the Joystick - MKIV RII/MK5 Joysticks and MKIV “A” Joysticks
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Part No. 1125038
SECTION 12—ELECTRONICS
SPJ+ Joysticks
NOTE: For this procedure, refer to FIGURE 12.2.
1. Align the joystick connector with the controller connector.
Light Grey Collar
2. Secure the joystick connector to the controller connector using the thumb screws on the controller connector.
Joystick
Connector
WARNING
The excess joystick cable must be coiled
and tie-wrapped to the rear of the seat
frame to ensure that cable does NOT
become entangled or damaged during
normal operation of seating system otherwise injury or damage may result.
Controller
Connector
FIGURE 12.2 Disconnecting/Connecting
the Joystick - SPJ+ Joysticks
3. If necessary, coil and tie wrap excess joystick cable to rear of seat frame.
MPJ+ Joysticks
NOTE: For this procedure, refer to FIGURE 12.3.
NOTE: Ensure the gaskets are installed in the top connector cap and between network connectors.
1. Ensure the latch is pulled away from the network connector.
Top Connector
Cap
Latch
Gasket
2. Connect the network connector to the other connectors.
Network
Connectors
3. Top and Bottom Connectors ‐ Install connector caps onto the network connector.
4. Push the latch into position to secure the network connectors and caps.
Controller
Cable
5. If necessary, secure excess cable using tie‐wraps.
Bottom
Connector Cap
Gasket
Gasket
FIGURE 12.3 Disconnecting/Connecting
the Joystick - MPJ+ Joysticks
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SECTION 12—ELECTRONICS
Repositioning the Joystick
ASBA or Adjustable ASBA Model
NOTE: For this procedure, refer to FIGURE 12.4.
1. Turn the lever on the adjustment lock to release the adjustment lock from joystick mounting tube.
2. Remove the joystick from the wheelchair.
3. Remove the three hex screws that secure joystick mounting bracket, the threaded hole half clamp and the opened hole half clamp to the arm tube.
4. Reposition the threaded hole half clamp and opened hole half clamp on the opposite arm tube. Make sure threaded hole half clamp is on the inside of arm tube.
5. While holding the two half clamps, install the front hex screw into the two half clamps. Securely tighten.
6. Line up mounting holes of the joystick mounting bracket with the mounting holes in the two half clamps.
7. Secure the joystick mounting bracket to the two half clamps with the remaining two hex screws.
8. Slide tube through the bracket to the desired position.
9. Slide adjustment lock over end of tube and secure adjustment lock to tube by turning lever on adjustment lock.
NOTE: If adjustment lock does not fit over tube, rotate 180°.
Mounting Bracket
(Threaded Plate)
Washer
Hex Mounting
Screws
Adjustment
Lock Lever
NOTE: MK5 SPJ‐80 joystick shown. All other joysticks reposition the same way.
Arm Tube
Joystick
Mounting Bracket
Joystick
Mounting Tube
FIGURE 12.4 Repositioning the Joystick - ASBA or Adjustable ASBA Model
Van Seat Model
NOTE: For this procedure, refer to FIGURE 12.5 on page 117.
NOTE: Take note of position and orientation of mounting hardware for reinstalling the joystick assembly.
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SECTION 12—ELECTRONICS
1. Turn the adjustment lock lever to release the joystick mounting tube from the mounting bracket.
2. Remove the joystick from the wheelchair.
3. Remove the three hex mounting screws, spacers and locknuts that secure the mounting bracket to the three mounting holes on the arm frame.
NOTE: The mounting bracket is mounted to the inside of the arm frame.
4. Reposition the mounting bracket on the opposite arm frame.
5. Using the three hex mounting screws, spacers and locknuts, secure the mounting bracket to the three mounting holes of the arm frame.
6. If necessary, perform the following to reposition the adjustment lock:
A. Slide the adjustment lock from the mounting bracket.
B. Rotate adjustment lock 180° and slide adjustment lock over the opposite end of the mounting bracket.
7. Slide joystick mounting tube through the mounting bracket to the desired position and secure adjustment lock to tube by turning lever on adjustment lock.
Locknuts
Hex Mounting Screws
Arm Frame
Spacers
Joystick Mounting Tube
Adjustment Lock Lever
Joystick
NOTE: MK5 SPJ‐80 joystick shown. All other joysticks reposition the same way.
Mounting
Bracket
FIGURE 12.5 Repositioning the Joystick - Van Seat Model
Replacing the MKIV RII™ 80 AMP Controller
WARNING
DO NOT attempt to perform this procedure with any power supplied to the wheel
chair. The joystick and batteries MUST be disconnected prior to removing the
MKIV RII controller module. Otherwise, equipment damage and/or personal injury
may occur.
NOTE: For this procedure, refer to FIGURE 12.6 on page 118.
NOTE: The MKIV RII Controller Module has five cables, with connectors. These cables are for control of the Left and Right drive motors (cables are labeled), MKIV RII Joystick control, power connection for the batteries and (if equipped) a power take off lead.
NOTE: Take note of position and orientation of the controller, cables, connectors, and mounting hardware for reinstallation of controller.
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SECTION 12—ELECTRONICS
NOTE: Take note of position and orientation of wiring and tie‐wraps for installation.
1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
2. Remove the batteries from the wheelchair. Refer to Installing/Removing the Batteries on page 103.
3. Disconnect the right and left motor leads (Detail “A” of FIGURE 12.6).
4. Disconnect the controller charger cable from the charger cable (Detail “A” of FIGURE 12.6).
5. Remove the two mounting screws and nuts securing the controller charger cable to the charger cable bracket.
6. Remove the three tie‐wraps securing the controller charger cable to the wheelchair frame.
7. Remove the four tie‐wraps securing the joystick cable to the wheelchair frame. 8. Remove the two mounting bolts securing the controller bracket to the wheelchair frame. (Detail “B” of FIGURE 12.6).
9. Remove the controller and controller bracket from the wheelchair frame.
10. Remove the mounting bolt, washer, locknut and mounting screw that secure the controller to the controller bracket. 11. Remove the existing controller from the controller bracket.
12. Using new tie‐wraps, reverse STEPS 1‐11 to install new controller.
DETAIL “A”
LEFT Motor
Lead
DETAIL “B”
RIGHT
Motor Lead
Mounting Screw
Short
Mounting
Bolts
Tie-Wraps
Washer
Controller
Charger Cable
Charger Cable
Bracket,
Mounting
Screws and
Nuts
Tie-Wraps
Charger Cable
Long
Mounting
Bolts
Locknut
MKIV
Controller
Wheelchair
Frame
FIGURE 12.6 Replacing the MKIV RII™ 80 AMP Controller
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Part No. 1125038
SECTION 12—ELECTRONICS
Replacing the NX-80, NK5-EX, MK5 or MK6i Controller
WARNING
DO NOT attempt to perform this procedure with any power supplied to the wheel
chair. The joystick and batteries MUST be disconnected prior to beginning to
remove the MK5-EX controller module. Otherwise, equipment damage and/or personal injury may occur.
NOTE: For this procedure, refer to FIGURE 12.7 on page 120.
NOTE: MK5 Controllers are NX‐80, NX‐75 or EX. MK6i Controller is MK690.
NOTE: There are four cables connected to the Controller Module. These cables must be disconnected before the controller can be removed.
NOTE: Take note of position and orientation of the controller, cables, connectors and mounting hardware for reinstallation of controller.
1. Remove the seat. Refer to Removing/Installing or Tilting the Seat Assembly on page 35.
2. Remove the batteries from the wheelchair. Refer to Installing/Removing the Batteries on page 103.
3. Remove the front shroud. Refer to Removing/Installing the Shrouds on page 88.
4. Remove the tie‐wraps securing the joystick cable to the wheelchair frame.
5. Remove the two mounting bolts securing the controller bracket to the wheelchair frame. (Detail “B” of FIGURE 12.7).
6. Lay the controller and controller bracket down in the battery tray and disconnect the following:
A. The right and left motor leads.
B. Controller charger cable.
C. Controller battery cable.
7. From inside the wheelchair frame, remove the two mounting screws secure the existing controller to the wheelchair frame (Detail “B” of FIGURE 12.7).
8. Remove the existing controller from wheelchair frame.
9. Reverse STEPS 1‐8 to install new controller.
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Pronto® M91™and M94™
SECTION 12—ELECTRONICS
DETAIL “A”
Joystick
Cable
DETAIL “B”
Wheelchair
Frame
LEFT Motor Lead
Controller
RIGHT
Charger
Motor
Cable
Lead
Mounting Bolts
Tie-wraps
Mounting
Screws
Controller
Battery
Cable
Wheelchair Frame
FIGURE 12.7 Replacing the NX-80, NK5-EX, MK5 or MK6i Controller
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Part No. 1125038
SECTION 13—WIRE ROUTING
SECTION 13—WIRE ROUTING
WARNING
After ANY adjustments, repair or service and BEFORE use, make sure that 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.
MKIV Wire Routing
NOTE: For this procedure, refer to FIGURE 13.1.
LEFT Motor
Lead
RIGHT Motor
Lead
Controller Battery Cable
Tie-Wraps
Tie-Wraps
Controller
Charger Cable
Charger Cable
Bracket, Mounting
Screws and Nuts
Walking Beam
Wheelchair Frame
Joystick Cable
Wheelchair Frame
Charger Cable
NOTE: Batteries not shown
FIGURE 13.1 MKIV Wire Routing
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Pronto® M91™and M94™
SECTION 13—WIRE ROUTING
MK5 or MK6i Wire Routing
NOTE: For this procedure, refer to FIGURE 13.2.
RIGHT Motor
Lead
Joystick Cable
NOTE: LEFT Motor Lead Not Shown
Controller Battery
Cable
Tie-Wraps
Walking Beam
Tie-Wraps
Tie-Wraps
Controller Charger
Cable
Wheelchair Frame
Joystick Cable
Wheelchair Frame
Charger Cable
NOTE: Batteries not shown
FIGURE 13.2 MK5 or MK6i Wire Routing
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Part No. 1125038
SECTION 14—TRANSPORT READY PACKAGE (TRRO)
SECTION 14—TRANSPORT READY
PACKAGE (TRRO)
NOTE: The information in this section is for wheelchairs ordered with the transport ready package ONLY.
WARNING
Contact Invacare Corporation (800-333-6900) with any questions about using this
wheelchair for seating in a motor vehicle.
When feasible, wheelchair occupants should transfer into the vehicle seat and use the
OEM (Original Equipment Manufacturer) vehicle-installed restraint system.
This wheelchair has been dynamically tested in a forward-facing mode with the
specified crash test dummy restrained by BOTH pelvic and upper-torso belt(s)
(shoulder belts), and that BOTH pelvic and upper-torso belt(s) should be used to
reduce the possibility of head and chest impacts with vehicle components.
Use ONLY Wheelchair Tie-down and Occupant Restraint Systems (WTORS) which
meet the requirements of the SAE (Society of Automotive Engineers) J2249
Recommended Practice during travel in a motor vehicle.
This wheelchair has been tested for seating in a motor vehicle with the factory
installed wheelchair seating system ONLY.
This wheelchair MUST be in a forward facing position during travel in a motor
vehicle.
This wheelchair is equipped and has been dynamically tested to rely on
WHEELCHAIR-ANCHORED pelvic belts. If desired, VEHICLE-ANCHORED pelvic
belts may be used.
IT IS STRONGLY RECOMMENDED THAT BOTH PELVIC AND UPPER-TORSO
BELT(S) BE USED TO REDUCE THE RISK OF INJURY.
To reduce the potential of injury to vehicle occupants, wheelchair-mounted
accessories, including but not limited to IV poles, trays, respiratory equipment,
backpacks, and other personal items should be removed and secured separately.
Postural supports, positioning devices, and/or strap(s) should not be relied on for
occupant restraint. These items may be used IN ADDITION TO the wheelchairanchored or vehicle-anchored belts.
Wheelchairs with adjustable seat angles MUST be set to 10°.
Seat angle is factory set at time of shipment. Adjustments to the wheelchair may void
WC 19 compliance. To maintain compliance, refer to wheelchair service manual
before making any adjustments.
DO NOT alter or substitute wheelchair frame parts, components, or seating systems.
A sudden stop and/or collision may structurally damage your wheelchair.
Wheelchairs involved in such incidents should be replaced.
Spill proof batteries, such as “gel cells”, should be installed on wheelchairs to be used
during travel in a motor vehicle.
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Pronto® M91™and M94™
SECTION 14—TRANSPORT READY PACKAGE (TRRO)
WARNING
TRANSPORT READY PACKAGES ARE NOT RETROFITTABLE TO EXISTING
MODELS AND ARE NOT FIELD SERVICEABLE.
Only use the transport brackets included with TRRO and TRBKTS for the purposes
described in this manual.
Battery retention brackets MUST be installed at all times. Otherwise, the wheelchair will not be WC/19 compliant. Refer to Installing/Removing the Batteries on
page 103.
About Transport Ready Packages
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.
Compliance Information
This wheelchair conforms with the requirements of the ANSI/RESNA WC/Vol. 1 ‐ Section 19.
NOTE: ANSI = American National Standards Institute, RESNA= Rehabilitation Engineering and Assistive Technology Society of North America.
This wheelchair has been dynamically tested in a forward‐facing mode with the specified crash test dummy, which corresponds to a person with a weight of 114‐209 pounds, restrained by BOTH pelvic and upper‐torso belts in accordance with ANSI/RESNA WC Vol 1 Section 19. BOTH pelvic and upper‐torso belts should be used to reduce the possibility of head and chest impacts with vehicle components.
Specifications
MODEL
WHEELCHAIR WEIGHT LIMIT
M91 Standard
Up to 300 lbs
M91 Heavy Duty
Up to 400 lbs
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Part No. 1125038
SECTION 14—TRANSPORT READY PACKAGE (TRRO)
Securing the Wheelchair to the Vehicle
Positioning the Wheelchair in the Vehicle
WARNING
This wheelchair must be in a forward facing position during travel in a motor
vehicle.
The recommended clear zones for wheelchair seated occupants restrained by
BOTH pelvic and upper-torso belt(s) and ONLY by a pelvic belt are shown in the
diagrams and described below.
Frontal Clear Zones (FCZ) need to be
Side View
LARGER when upper-torso belt(s) are
Frontal Clear
NOT used.
Zone
16 in.
The rear clear zone of 16-inches is
measured from the rearmost point on
an occupant’s head.
HHT
The frontal clear zone is measured from
the frontmost point on an occupant’s
head and is 26-inches with pelvic and
upper-torso belt(s) and 37-inches with
ONLY a pelvic belt.
The frontal clear zone may not be
Top View
achievable for wheelchair-seated
drivers.
8 in.
The estimated seated height (HHT)
from the ground or floor to the top of
8 in.
the wheelchair-seated occupant’s head
FCZ
16 in.
ranges from approximately 47-inches
Frontal
Clear Zone
for a small adult female to about 61inches for a tall adult male.
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Pronto® M91™and M94™
SECTION 14—TRANSPORT READY PACKAGE (TRRO)
Securement Points
Tie-Down
Brackets
Tie-Down Bracket
(hidden from view)
Tie-Down
Bracket
FIGURE 14.1 Securement Points
Securing the Wheelchair
This wheelchair is to be used only with Wheelchair Tie‐down and Occupant Restraint Systems (WTORS) that have been installed in accordance with the manufacturerʹs instructions and SAE J2249.
NOTE: A copy of SAE J2249 Wheelchair Tie‐down and Occupant Restraint Systems (WTORS) for use in Motor Vehicles can be obtained from: SAE International, 400 Commonwealth Drive, Warrendale, PA 15096‐0001, (877) 606‐7232 or (724) 776‐4970.
Attach WTORS to the tie‐down brackets in accordance with the manufacturerʹs instructions and SAE J2249.
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Part No. 1125038
SECTION 14—TRANSPORT READY PACKAGE (TRRO)
Securing the Occupant
Wheelchair-Anchored Belts
WARNING
The pelvic belt that is provided by Invacare has been tested for use in a motor vehicle on this wheelchair ONLY. DO NOT replace the pelvic belt with a different style
pelvic belt.
NOTE: For this procedure, refer to FIGURE 14.2.
The wheelchair has been provided with a pelvic belt which meets the requirements of ANSI/RESNA W/C 19. The pelvic belt, provided by Invacare, has been designed to accommodate use on either side of the vehicle. If necessary, follow the instructions below to reverse the orientation of the pelvic belt to accommodate the vehicle‐anchored upper‐torso belt.
1. Install the pelvic belt pin (Detail “A” of FIGURE 14.2) into the large end of the slot in the belt mounting bracket. Rotate downward and forward until it snaps into place into the small end of the slot.
NOTE: Note the position of the male end of the belt when installing the pelvic belt onto the belt mounting brackets. The male end of the pelvic belt (Detail ʺAʺ of FIGURE 14.2) has a pin which is used to secure the vehicle‐anchored upper‐torso belt. 2. Repeat STEP 1 for the opposite belt mounting bracket.
3. Install the vehicle‐anchored upper‐torso belt onto the pin on the male end of the pelvic belt.
DETAIL “A”
Back Angle
Bracket
Pin
Pin
Pelvic Belt
Belt Mounting
Bracket
Pin
(Used to secure the vehicle
anchored upper-torso belt)
Large End
of Slot
Male End
Small End of Slot
FIGURE 14.2 Wheelchair-Anchored Belts
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SECTION 14—TRANSPORT READY PACKAGE (TRRO)
Vehicle-Anchored Belts
NOTE: For this procedure, refer to FIGURE 14.3.
This wheelchair has an overall rating of “A” with regard to accommodating the use and fit of vehicle‐anchored belts. This rating is scored as follows:
RATING
DESCRIPTION
A
Excellent
B
Good
C
Fair
D
Poor
The test for Lateral Stability Displacement for Point (P) is shown in FIGURE 14.3. The average test result for point (P) is 0.44‐inches (11.2 mm).
Point (P)
Test Platform
45°
NOTE: Rear view of the wheelchair and human surrogate secured on test platform and tilted to 45°.
FIGURE 14.3 Vehicle-Anchored Belts
Seating System
WARNING
This wheelchair has been tested for seating in a motor vehicle with the factory
installed seating system ONLY.
Ensure that the factory installed seating system is secured to the wheelchair frame before operation. Refer to the seating system owner’s manual.
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Part No. 1125038
SECTION 14—TRANSPORT READY PACKAGE (TRRO)
Positioning Belts
WARNING
The angle of the pelvic belt should be
Side View
within the preferred zone of 45 to 75
degrees to the horizontal OR within the
optional zone of 30 to 45 degrees to the
Preferred Zone
horizontal.
Optional Zone
Steeper side-view pelvic belt angles are
especially important if the pelvic belt is
intended to be used for postural support
in addition to occupant restraint in a
30°
45°
frontal crash. Steeper angles will reduce
70°
the tendency for a vertical gap to
develop between the user and the belt
due to compliance of seat cushions and
belt movement, thereby reducing the
tendency for the user to slip under the
belt and for the belt to ride up on the
soft abdomen during normal use.
Steeper belt angles also reduce the tendency for upper-torso belts to pull the pelvic
belt onto the abdomen during frontal impact loading.
NOTE: For this procedure, refer to FIGURE 14.4.
1. The pelvic belt should be worn low across the front of the pelvis.
2. Position the upper‐torso belt(s) over the shoulders.
3. The belt(s) should not be held away from the body by wheelchair components or parts, including but not limited to wheelchair armrests or wheels. Refer to FIGURE 14.4 for proper and improper positioning of the belts.
4. Ensure the belt(s) are not twisted.
5. Adjust belts as firmly as possible, being mindful of user comfort.
DO NOT POSITION BELT OUTSIDE OF
ARMRESTS, WHEELS, ETC.
DO POSITION BELT INSIDE OF
ARMRESTS, WHEELS, ETC.
FIGURE 14.4 Positioning Belts
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Pronto® M91™and M94™
NOTES
NOTES
Pronto® M91™and M94™
130
Part No. 1125038
LIMITED WARRANTY
LIMITED WARRANTY
For warranty information, please refer to the original ownerʹs manual which came with this product, or contact Invacare for more information.
Part No. 1125038
131
Pronto® M91™and M94™
Invacare Corporation
www.invacare.com
USA
One Invacare Way
Elyria, Ohio USA
44036-2125
800-333-6900
Canada
570 Matheson Blvd E Unit 8
Mississauga Ontario
L4Z 4G4 Canada
800-668-5324
All rights reserved. Trademarks are
identified by the symbols ™ and ®. All
trademarks are owned by or licensed to
Invacare Corporation unless otherwise
noted.
Loctite is a registered trademark of Henkel
Loctite Corporation.
© 2008 Invacare Corporation
Part No. 1125038
Rev C - 07/08
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