Invacare® Pronto® M91™ Power Wheelchair Base with SureStep® User Manual This manual MUST be given to the user of the product. BEFORE using this product, read this manual and save for future reference.
Accessories Information..........................................16 Powered Seating Systems Only ........................................16 Transport................................................. 17 Repair or Service Information ........................................19 Safety/Handling ..............................................20 A Note to Wheelchair Assistants......................................21 Stability and Balance ............................................22 Coping with Everyday Obstacles........................................ 24 Part No 1143153 Invacare® Pronto® M91™...
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Wheels ................................................38 Driving ................................................39 Weight................................................39 WHEELCHAIR OPERATION Preparing the Joystick for Use .......................................... 40 Operating the Wheelchair..........................................41 Turning the Power On/Off.......................................... 41 Using the Joystick to Drive the Wheelchair.................................... 42 Invacare® Pronto® M91™ Part No 1143153...
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When to Charge Batteries ..........................................55 SPJ+, SPJ+ w/PSS and SPJ+ w/ACC Joysticks................................... 56 CMPJ+ Joystick ............................................... 56 Charging Batteries ............................................... 57 Description and Use of Battery Chargers...................................... 58 On-Board Battery Charger..........................................59 Independent Battery Charger ........................................... 61 Part No 1143153 Invacare® Pronto® M91™...
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Securing the Occupant ............................................72 Wheelchair-Anchored Belts........................................72 Vehicle-Anchored Belts..........................................74 Seating System ..............................................74 Positioning Belts ............................................. 75 SETUP/MAINTENANCE Setup/Delivery Inspection ..........................................77 User/Attendant Inspection Checklists ......................................78 Inspect/Adjust Weekly..........................................78 Inspect/Adjust Monthly..........................................78 Inspect/Adjust Periodically........................................... 79 Invacare® Pronto® M91™ Part No 1143153...
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Removing/Installing the Footboard Assembly ....................................96 Removing ................................................. 97 Installing................................................97 Adjusting the Footboard Assembly........................................98 Angle ................................................. 98 Depth................................................99 Replacing Front/Rear Caster Assemblies................................100 Adjusting Forks ........................................101 Repositioning Joystick ............................................102 Adjustable ASBA ............................................102 Van Seat................................................103 Part No 1143153 Invacare® Pronto® M91™...
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CONTENTS Disconnecting/Connecting the Joysticks ......................................104 SPJ+ Joysticks ..............................................104 MPJ+ Joysticks...............................................105 TROUBLESHOOTING Driving Performance ............................................106 Electrical................................................106 SPJ+, SPJ+ w/PSS or SPJ+ w/ACC Joysticks...................................106 CMPJ+, PSR+, PSF+ Joysticks or Displays....................................109 Checking Battery Charge Level ........................................112 Invacare® Pronto® M91™ Part No 1143153...
Caution indicates a potentially hazardous situation which, if not avoided, may result in property damage or minor injury or both. IMPORTANT Indicates a hazardous situation that could result in damage to property if it is not avoided. Gives useful tips, recommendations and information for efficient, trouble-free use. Part No 1143153 Invacare® Pronto® M91™...
Refer to the table below for part numbers of additional documents which are referenced in this manual. MANUAL PART NUMBER MK6i™ Electronics Programming Guide 1141471 Adjustable ASBA Owner’s Manual 1143192 Van Seat Owner’s Manual 1143195 Formula™ CG Seating System 1143155 Adjustable ASBA Service Manual 1143238 M91 and M94™Service Manual 1125038 Invacare® Pronto® M91™ Part No 1143153...
This warranty gives you specific legal rights and you may also have other legal rights which vary from state to state. Invacare warrants the base frame to be free from defects in materials and workmanship for a period of five (5) years from the date of purchase from Invacare or a dealer, with a copy of the seller’s invoice required for coverage under this warranty.
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INVACARE, OR TO A PRODUCT DAMAGED BY CIRCUMSTANCES BEYOND INVACARE'S CONTROL, AND SUCH EVALUATION WILL BE SOLELY DETERMINED BY INVACARE. THE WARRANTY SHALL NOT APPLY TO PROBLEMS ARISING FROM NORMAL WEAR AND TEAR OR FAILURE TO ADHERE TO THE PRODUCT INSTRUCTIONS. A CHANGE IN OPERATING NOISE, PARTICULARLY RELATIVE TO MOTORS AND GEARBOXES DOES NOT CONSTITUTE A FAILURE OR DEFECT AND WILL NOT BE REPAIRED;...
(excluding batteries), powered seating actuators, 2-pole motors and gearboxes to be free from defects in materials and workmanship for a period of two (2) years from the date of purchase from Invacare or a dealer, with a copy of the seller’s invoice required for coverage under this warranty.
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INVACARE, OR TO A PRODUCT DAMAGED BY CIRCUMSTANCES BEYOND INVACARE'S CONTROL, AND SUCH EVALUATION WILL BE SOLELY DETERMINED BY INVACARE. THE WARRANTY SHALL NOT APPLY TO PROBLEMS ARISING FROM NORMAL WEAR AND TEAR OR FAILURE TO ADHERE TO THE PRODUCT INSTRUCTIONS. A CHANGE IN OPERATING NOISE, PARTICULARLY RELATIVE TO MOTORS AND GEARBOXES DOES NOT CONSTITUTE A FAILURE OR DEFECT AND WILL NOT BE REPAIRED;...
NOTICE THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. Check all parts for shipping damage and test before using. In case of damage, DO NOT use. Contact Invacare/Carrier for further instruction. As a manufacturer of wheelchairs, Invacare endeavors to supply a wide variety of wheelchairs to meet many needs of the end 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. Invacare® Pronto® M91™ Part No 1143153...
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.
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Extreme caution is advised when it is necessary to move an unoccupied power wheelchair up or down the stairs. Invacare recommends using two assistants and making thorough preparations. Make sure to use ONLY secure, non-detachable parts for hand-hold supports.
(2) the service manual (if applicable) and (3) the seating system’s manual (if applicable). if you are unable to understand the warnings, cautions and instructions, contact Invacare technical support before attempting to service or operate this equipment - otherwise, injury or damage may result.
Individual wheelchair users often develop skills to deal with daily living activities that may differ from those described in this manual. Invacare recognizes and encourages each individual to try what works best for him/her in overcoming architectural obstacles that they may encounter. However all warnings and cautions given in this manual MUST be followed.
Also, be aware of detachable parts such as arms or legrests. These must NEVER be used to move the wheelchair or as lifting supports, as they may be inadvertently released, resulting in possible injury to the user and/or assistant(s). When learning a new assistance technique, have an experienced assistant help you before attempting it alone. Part No 1143153 Invacare® Pronto® M91™...
The drive behavior initially experienced by the user may be different from other wheelchairs previously used. This 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.
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DO NOT move beyond the center of gravity. DO NOT lean forward out of the wheelchair any further than the length of the armrests. Part No 1143153 Invacare® Pronto® M91™...
For this procedure, refer to FIGURE 1. Do not go down a ramp at full speed. Some seat/ Bump/ back positions will cause the wheelchair to feel Threshold unstable. FIGURE 1 Coping with Everyday Obstacles Invacare® Pronto® M91™ Part No 1143153...
FIGURE 3. WARNING: Pinch point may occur when adjusting the arm angle position (Detail “A”). Pinch point may occur when rotating the footboard assembly (Detail “B”). DETAIL “A” DETAIL “B” Pinch Point Pinch Point FIGURE 3 Part No 1143153 Invacare® Pronto® M91™...
Make sure detent balls of the quick-release pin are fully released before operating the wheelchair. Keep detent balls clean. Invacare® Pronto® M91™ Part No 1143153...
For this procedure, refer to FIGURE 4. FIGURE 4 Reaching, Leaning and Bending - Forward Engage motor locks and turn power off before reaching, leaning or bending only as far as your arm will extend without changing your sitting position. Part No 1143153 Invacare® Pronto® M91™...
Reach back only FIGURE 5 Reaching, Bending - Backward as far as your arm will extend without changing your sitting position. Invacare® Pronto® M91™ Part No 1143153...
Shift body weight into seat with transfer. FIGURE 6 Transferring To and From Other Seats During independent transfer, little or no seat platform will be beneath you. Use a transfer board if at all possible. Part No 1143153 Invacare® Pronto® M91™...
Avoid storing or using the wheelchair near open flame or combustible products. Serious injury or damage to property may result. Invacare has tested its power wheelchairs in accordance with ISO 7176 “Rain Test”. This provides the end user or his/her attendant sufficient time to remove his/her power wheelchair from a rain storm and retain wheelchair operation.
Electrical - Grounding Instructions WARNING 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.
Ensure the pins of the extension cord plug are the same number, size, and shape as those on the charger. DO NOT under any circumstances cut or remove the round grounding plug from the charger AC cable plug or the extension cord plug. Invacare® Pronto® M91™ Part No 1143153...
WARNING Invacare DOES NOT recommend the use of its wheelchairs as a weight training apparatus. Invacare wheelchairs have NOT been designed or tested as a seat for any kind of weight training. If occupant uses said wheelchair as a weight training apparatus, INVACARE SHALL NOT BE LIABLE FOR BODILY INJURY AND THE WARRANTY IS VOID.
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. Invacare® Pronto® M91™ Part No 1143153...
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2) This device has been tested to a radiated immunity level of 20 volts per meter. 3) The immunity level of the product is unknown. Modification of any kind to the electronics of this scooter as manufactured by Invacare may adversely affect the EMI immunity levels.
3 LABEL LOCATIONS 3 Label Locations M91 Standard M91 Heavy Duty Serial Number Label is located on the inside of the right rear frame. Weight Capacity Label located here (Base Only). Invacare® Pronto® M91™ Part No 1143153...
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Auto style seat positioning without TRRO strap shown. This label is also on the airline style seat positioning strap. Wheelchairs with TRRO Also on opposite side of wheelchair. Also on opposite side of wheelchair. Part No 1143153 Invacare® Pronto® M91™...
Adjustable ASBA: 22.5 to 23.5 inches (Cushion Not Compressed) Van Seat: 20 - 22 inches (To Seat Pan) Wheels Casters: 6 x 2 inch Front/Rear with Precision Sealed Bearings Drive Wheel: 14 x 3 inch Invacare® Pronto® M91™ Part No 1143153...
260 lbs (w/o Batteries), 310 lbs (w/ Batteries) Battery Weight: 37 lbs Each (Use 22NF Batteries Only) *Maximum Weight Limitation: Up to 300 lbs Up to 400 lbs Refer to Weight Limitation on page 33. Part No 1143153 Invacare® Pronto® M91™...
Adjustment Lock Slide joystick mounting tube to the desired position. Lever Turn the adjustment lock lever to secure the adjustment lock to the joystick mounting tube. FIGURE 1 Preparing the Joystick for Use Invacare® Pronto® M91™ Part No 1143153...
Turning the power Off can be achieved by performing one of the following steps: JOYSTICK ACTION CMPJ+ Move the On/Off switch Back to the Off position. FIGURE 2 Turning the Power On/Off SPJ+ Press the On/Off button. Part No 1143153 Invacare® Pronto® M91™...
To drive the wheelchair, perform the following: Adjust speed control knob to the appropriate setting. Turn the power On. Refer to Turning the Power On/Off on page 41. Maneuver the joystick in the following manner: Invacare® Pronto® M91™ Part No 1143153...
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For specific information about the joystick installed on the wheelchair, refer to one of these procedures: • SPJ+, MK6i™ SPJ+ w/PSS and MK6i SPJ+ w/ACC Joystick Switches and Indicators on page 44. • CMPJ+ Joystick Switches and Indicators on page 47. Part No 1143153 Invacare® Pronto® M91™...
Service Indicator Powered Seating Switch Charger/ Active Programming (If Programed) Input *The mode button is only present on SPJ+ w/ACC joystick. FIGURE 4 SPJ+, MK6i™ SPJ+ w/PSS and MK6i SPJ+ w/ACC Joystick Switches and Indicators Invacare® Pronto® M91™ Part No 1143153...
) to decrease/increase the speed in 20% increments. The larger bars in the speedometer will light. • Press and hold the tortoise button ( ) or hare button ( ) to decrease/increase the speed in smaller increments. The smaller bars in the speedometer will light. Part No 1143153 Invacare® Pronto® M91™...
Service Indicator The AMBER service indicator will light when an error or fault occurs. Refer to Service Indicator Light Diagnostics on page 108 for a listing of the flash codes and what they indicate. Invacare® Pronto® M91™ Part No 1143153...
Move the toggle up and release one more time to select DRIVE 1. Speed Control Knob Joystick Remote On/ Programmable Mono Off Input Port 1/2 or External Mode Switch To Controller FIGURE 5 CMPJ+ Joystick Switches and Indicators Part No 1143153 Invacare® Pronto® M91™...
This screen is displayed at startup of the joystick for about 2 seconds. This screen displays the software version and date information. FIGURE 6 LCD Display Screens - Splash Screen After this screen, the joystick displays the Main Screen. Invacare® Pronto® M91™ Part No 1143153...
*Drive names can be customized. Actual drive names may display differently. **No Drive selected via the programmer. BATTERY This symbol shows the Battery Level and will change depending on the available battery power. LEVEL This indicator is shown on every screen. INDICATOR Part No 1143153 Invacare® Pronto® M91™...
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Digital 3 Speed 1 - 3 RIM Mode No Driving Automatic Positioning Powered Seating 4-Switch Level 1 4-Switch Level 2 Drive Select ECU Output Activated ASM 1 (L1, L1 Latched) (L2, L2 Latched) ASM 2 Infrared Mouse Mouse B Invacare® Pronto® M91™ Part No 1143153...
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This screen is shown when the operator issues a drive command and the Drive Icon on the main screen was highlighted. The Drive’s name, warning/info message, status icon and battery indicator are displayed on this screen. FIGURE 8 LCD Display Screens - Driving Screen Part No 1143153 Invacare® Pronto® M91™...
FAULT CODES - Displays time and date stamped fault codes. This information can be helpful to a provider prior to making a service call. CONNECTED DEVICES CONNECTED DEVICES - Displays device connections. Refer to Connected Devices Screen on page 53. Invacare® Pronto® M91™ Part No 1143153...
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Micro Extremity Actuator Control Elevate Actuator Control Interface Peachtree Control 4-way Switch Box Generic Tilt Actuator ASL Digital Control Multiple Actuator Generic Recline Control Box Actuator FIGURE 9 LCD Display Screens - Connected Devices Screen Part No 1143153 Invacare® Pronto® M91™...
(normally open momentary switch with mono plug). To use the remote On/Off feature, the Drive Select/On/Off switch must be in the On position. Each activation of the ability switch will alternately turn the joystick On or Off. Invacare® Pronto® M91™ Part No 1143153...
When to Charge Batteries Keep Batteries charged. When possible, DO NOT allow battery charge to empty. If battery charge becomes so low that no battery indicators are lit, allow the batteries to charge overnight. Part No 1143153 Invacare® Pronto® M91™...
Batteries Empty Batteries Full right and moving towards the left a bar at a time until no segments appear. At this level the user should charge the batteries as soon as FIGURE 11 CMPJ+ Joystick possible. Invacare® Pronto® M91™ Part No 1143153...
DO NOT under any circumstances cut or remove the round grounding plug from the charger AC cable plug or the extension cord plug. CAUTION Always charge new batteries before initial use or battery life will be reduced. Part No 1143153 Invacare® Pronto® M91™...
If the batteries need to be charged more often or take longer to charge than normal, they may need to be replaced. Contact an Invacare dealer for service. The batteries can be charged using the on-board battery charger or by plugging an independent battery charger into the port located on the front of the SPJ-80/DPJ/CMPJ joysticks.
If the On/Off LED indicator is “Blinking” RED, this is abnormal. Unplug AC power cord from the on-board battery charger and wall outlet. Contact Invacare at the number listed on the back page of this manual. When the On/Off LED indicator light is Off, charger is Off.
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Fully Charges LED “Off” Charger Disconnected Female Connector on AC Power Cord Solid RED or “Blinking” RED Under Voltage, Over Voltage (Connects to AC or Over Temperature Receptacle on Charger) FIGURE 12 On-Board Battery Charger Invacare® Pronto® M91™ Part No 1143153...
It is advantageous to recharge frequently rather (On Back of (On Back of than only when necessary. In fact, a battery’s life is Display) Display) extended if the charge level is maintained well above a low condition. FIGURE 13 Charging Batteries Part No 1143153 Invacare® Pronto® M91™...
When reinstalling the seat verify that the seat brackets are engaged with the seat clevis pins by pulling up on the latch bar. Pull up on latch bar to verify that brackets are engaged with seat clevis pins. Connect the joystick. Refer to Disconnecting/Connecting the Joysticks on page 104. Invacare® Pronto® M91™ Part No 1143153...
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5 WHEELCHAIR OPERATION Van Seat model shown. Adjustable ASBA seat removes/installs in the same way. Rear Pivot Brackets Seat Clevis Pins Latch Bar (located under the front of the seat) FIGURE 14 Removing/Installing the Seat Assembly Part No 1143153 Invacare® Pronto® M91™...
Remove the two screws and washers securing the Formula PTO Plus frame to the front seat posts. Firmly grasp the front edge of the seat assembly, slowly tilt the seat assembly back into the up/open position. Invacare® Pronto® M91™ Part No 1143153...
- otherwise injury or damage may result. Insert the two screws through the washers, the Formula PTO Plus frame and the two front seat posts. Prop Rod FIGURE 15 Tilting the Seat Assembly Part No 1143153 Invacare® Pronto® M91™...
Disengage (PUSH) - Move the motor lock levers UP to disengage the motors and push the wheelchair. DETAIL “A” Motor Lock Lever ENGAGE MOTOR (Drive) - Move Motor Lock Lever DOWN DISENGAGE MOTOR (Push) - Move Motor Lock Rear Caster Drive Wheel Lever UP FIGURE 1 Disengaging/Engaging Motor Lock Levers Invacare® Pronto® M91™ Part No 1143153...
This section applies only to wheelchairs equipped with TRRO (Transport Ready Option). 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.
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.
The estimated seated height (HHT) from the ground or floor to the top of the wheelchair-seated occupant’s head ranges from approximately 47-inches for a small adult female to about 61-inches for a tall adult male (Frontal Clear Zone) 16in. 8in. Side View 8in. 16in. (Frontal Clear Zone) Top View Invacare® Pronto® M91™ Part No 1143153...
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 manufacturer's instructions and SAE J2249. Part No 1143153 Invacare® Pronto® M91™...
The wheelchair has been provided with a pelvic belt which meets the requirements of ANSI/RESNA WC/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.
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DETAIL “A” - PELVIC BELT DETAIL “B” Back Angle Bracket Belt Mounting Bracket Pelvic Belt Large End of Slot Male End Small End of Slot (Used to secure the vehicle- anchored upper torso belt.) FIGURE 2 Wheelchair-Anchored Belts Part No 1143153 Invacare® Pronto® M91™...
When feasible, wheelchair occupants should transfer into the vehicle seat and use the OEM (Original Equipment Manufacturer) vehicle-installed restraint system Ensure that the factory installed seating system is secured to the wheelchair frame before operation. Refer to the seating system owner’s manual. Invacare® Pronto® M91™ Part No 1143153...
Steeper belt angles also reduce the tendency for upper-torso belts to pull the pelvic belt onto the abdomen during frontal impact loading. For this procedure, refer to FIGURE 4 on page 76. Part No 1143153 Invacare® Pronto® M91™...
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Ensure the belt(s) are not be twisted. Adjust belts as firmly as possible, being mindful of user comfort. DO position belts INSIDE of DO NOT position belts OUTSIDE armrests, wheels, etc. of armrests, wheels, etc. FIGURE 4 Positioning Belts Invacare® Pronto® M91™ Part No 1143153...
Ensure casters are free of debris, and all mounting hardware is secure and not damaged/missing. Check that cables are routed and secured properly to ensure that cables DO NOT become entangled and damaged during normal operation of seating system. Part No 1143153 Invacare® Pronto® M91™...
Ensure seat release latch is not worn and is functional. Replace if necessary. Ensure proper operation of powered functions (Example: drive, seating and legrests). Inspect/Adjust Monthly Clean upholstery and armrests. Clean dirt and lint from axles. Clean dirt and lint from bearings. Invacare® Pronto® M91™ Part No 1143153...
Check front riggings/footboard for loose fasteners. Replace /tighten if necessary. Check that all labels are present and legible. Replace if necessary. Inspect charger AC power cord for damage. Replace if necessary. Part No 1143153 Invacare® Pronto® M91™...
Six Month Inspection Clean upholstery and armrests. Clean dirt and lint from axles. Clean dirt and lint from bearings. Check that all labels are present and legible. Replace if necessary. Invacare® Pronto® M91™ Part No 1143153...
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Ensure the anti-tipper wheels are properly installed and located in the proper mounting position. Ensure wheel locks DO NOT interfere with tires when rolling. Ensure wheel lock pivot point are free of wear and looseness. Ensure wheel locks are easy to engage. Part No 1143153 Invacare® Pronto® M91™...
Inspect foam handgrips for damage. If damaged, have them replaced by a qualified technician. Ensure swingarm stops are in place and not deteriorated or damaged. Replace if necessary. Inspect/Adjust Every 18 Months Replace motor brushes and gearbox coupling. Invacare® Pronto® M91™ Part No 1143153...
The use of rubber gloves is recommended when working with batteries. 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 occur.
For proper battery connection, batteries MUST use post style terminals with mounting holes through the terminal. PROPER BATTERIES TO USE DO NOT USE THIS TYPE OF BATTERY Terminal Mounting Holes POSITIVE (+) NEGATIVE (-) NEGATIVE (-) POSITIVE (+) Battery Terminal/ Battery Battery Terminal/ Battery Post Terminal/Post Post Terminal/Post Invacare® Pronto® M91™ Part No 1143153...
Place the wheelchair in a well ventilated area where work can be performed without risking damage to carpeting or floor covering. Verify the joystick On/Off switch is in the Off position and disconnect joystick cable (not shown). Refer to Disconnecting/Connecting the Joysticks on page 104. Part No 1143153 Invacare® Pronto® M91™...
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If necessary, connect the wiring harness to the two batteries. Refer to Replacing the Batteries and/or Battery Cables on page 90. 10. Reconnect RIGHT and LEFT motor leads to allow access to the FRONT of the battery tray, if disconnected in STEP 5. Invacare® Pronto® M91™ Part No 1143153...
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Wheelchairs without Formula PTO Plus - Reinstall the seat. Refer to Removing/Installing the Seat Assembly on page 62. • Wheelchairs with Formula PTO Plus - Tilt the seat forward. Refer to Tilting the Seat Assembly on page 64. Part No 1143153 Invacare® Pronto® M91™...
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Terminal Mounting Screw, Nut and Fuse Hardware* RED Rear POSITIVE (+) Battery Terminal Mounting Screw, Nut and Fuse Hardware* Rear Battery Rear of wheelchair Terminal cap shown Retaining Strap removed for clarity. FIGURE 2 Installing/Removing the Batteries Invacare® Pronto® M91™ Part No 1143153...
Batteries With Built-in Lifting Strap- Use built in lifting strap to remove the battery from the battery tray (Detail “A” of FIGURE 1). • Batteries Without Built-in Lifting Strap- Use the battery lifting strap to remove the battery from the battery tray (Detail “B” of FIGURE 1). Part No 1143153 Invacare® Pronto® M91™...
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. Remove the mounting screws and nuts that secure the POSITIVE (+) RED battery cable to the POSITIVE (+) battery terminal/post as shown in FIGURE 3. Invacare® Pronto® M91™ Part No 1143153...
Verify wiring harness is correctly installed and securely tightened. Verify proper battery orientation. Reposition battery terminal covers over battery post(s). Using new tie-wraps, secure the terminal covers to the battery terminals as shown in FIGURE 3. Invacare® Pronto® M91™ Part No 1143153...
DO NOT attempt to replace flat free tires. This procedure MUST be performed by a qualified technician. During initial use of the wheelchair, the user may experience flat spots on the wheels. Flat spots will vanish with continued use of the wheelchair. Part No 1143153 Invacare® Pronto® M91™...
Wheelchairs with Formula PTO Plus - Tilt the seat forward. Refer to Tilting the Seat Assembly on page 64. • Wheelchairs without Formula PTO Plus - Reinstall the seat. Refer to Removing/Installing the Seat Assembly on page 62. Invacare® Pronto® M91™ Part No 1143153...
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DETAIL “B” - FRONT SHROUD DETAIL “A” - TOP SHROUD Base Frame Top Shroud Hooks Rear of Seat Supports Wheelchair Base Frame Front Shroud Release Knob Front of Hook and Wheelchair Loop Strips FIGURE 4 Removing/Installing the Shrouds Part No 1143153 Invacare® Pronto® M91™...
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. For this procedure, refer to FIGURE 5 on page 97. Invacare® Pronto® M91™ Part No 1143153...
Ensure that the detent balls of the quick release pin are fully released and protruding past the outer edge of the tube (Detail “A”). Outer Edge of Tube Detent Balls FIGURE 5 Removing/Installing the Footboard Assembly Part No 1143153 Invacare® Pronto® M91™...
Thread the jam nut and washer inward until it is flush with the footboard bracket. Securely tighten the jam nut and washer to secure the mounting screw in place. FIGURE 6 Adjusting the Footboard Assembly - Angle Invacare® Pronto® M91™ Part No 1143153...
Install the quick release pin. Make sure the detent balls of the quick release pin are fully released and past the outer edge of the tube (Detail “A”). Outer Edge of Tube Detent Balls FIGURE 7 Adjusting the Footboard Assembly - Depth Part No 1143153 Invacare® Pronto® M91™...
Washer secures the caster to the fork. Caster Remove the caster and discard. Secure new caster to fork with existing mounting screw, two FIGURE 8 Replacing Front/Rear Caster Assemblies washers and locknut (FIGURE 8). Securely tighten. Invacare® Pronto® M91™ Part No 1143153...
Test wheelchair for maneuverability. Readjust locknuts if necessary, and repeat STEPS 1-3 until correct. Snap the dust cover into the caster headtube ensuring that the tabs are under the side shroud. FIGURE 9 Adjusting Forks Part No 1143153 Invacare® Pronto® M91™...
Slide the joystick mounting tube through the mounting bracket to the desired position. Joystick not shown. Turn the adjustment lock lever to secure the joystick mounting tube into the mounting bracket. FIGURE 10 Repositioning Joystick Invacare® Pronto® M91™ Part No 1143153...
Locknuts MK5 SPJ-80 joystick shown, all other joysticks reposition in the same way. Arm Frame Spacers Hex Mounting Screws Joystick Mounting Tube Adjustment Lock Lever Mounting Bracket FIGURE 11 Repositioning Joystick - Van Seat Part No 1143153 Invacare® Pronto® M91™...
Hold the light GREY collar portion of the joystick connector with one hand and the controller connector on the wheelchair in the other and align them. FIGURE 12 Disconnecting/Connecting the Joysticks - SPJ+ Joysticks Lightly push to engage the joystick connector and the controller connector. Invacare® Pronto® M91™ Part No 1143153...
Top and Bottom Connectors - Install connector caps onto the Cable Gasket network connector. Push the latch in to secure the network connectors and caps. If necessary secure excess cable using tie-wraps. Bottom Connector Gasket FIGURE 13 Disconnecting/Connecting the Joysticks - MPJ+ Joysticks Part No 1143153 Invacare® Pronto® M91™...
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. Invacare® Pronto® M91™ Part No 1143153...
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The steady LEDs indicate the current state of ing with steady display. and/or charging mode. the battery charge. All LEDs are flashing slowly. Joystick has detected Out-of- Release the joystick back to Neutral. Neutral-at-Power-Up mode. Part No 1143153 Invacare® Pronto® M91™...
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Check that battery cables are connected properly. If necessary, replace batteries. Refer to Replacing the Batteries and/or Battery Cables on page 90. Left Motor Fault Contact Invacare/Dealer for service. Right Motor Fault Contact Invacare/Dealer for service. Left Park Brake Fault Ensure brake lever is in the drive position before turning on the wheelchair.
Check joystick cable connections. Check joystick cable and connectors for damage. Contact Invacare/Dealer for service. General Fault Contact Invacare/Dealer for service. Incompatible or Wrong type of remote connected. Contact Invacare/Dealer for service. incorrect Remote CMPJ+, PSR+, PSF+ Joysticks or Displays SYMPTOM PROBABLE CAUSE...
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Attendant control is active and can ATTENDANT ACTIVE and displays. be used to drive the chair. Batteries draw excessive current when Battery failure. Have batteries checked for shorted cell. Replace if necessary. charging. Electrical malfunction. Contact Dealer/Invacare for service. Invacare® Pronto® M91™ Part No 1143153...
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Replace batteries if necessary. Refer to Replacing the Batteries and/or Battery Cables on page 90. Motor “chatters” or runs irregular. Motor/gearbox malfunction. Stop use of Wheelchair. Contact Dealer/Invacare for Service. Joystick erratic or does not respond as Damaged motor coupling. Contact Dealer/Invacare for Service.
Don’t tap on clamps and terminals with tools. Push battery clamps on the terminals. Spread clamps wider if necessary. Don’t mismatch your battery and chargers. Use ONLY a GEL charger for a GEL battery. Invacare® Pronto® M91™ Part No 1143153...
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9 TROUBLESHOOTING Notes Invacare® Pronto® M91™ Part No 1143153...
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9 TROUBLESHOOTING Notes Invacare® Pronto® M91™ Part No 1143153...
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9 TROUBLESHOOTING Notes Invacare® Pronto® M91™ Part No 1143153...
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Invacare Corporation Canada One Invacare Way 570 Matheson Blvd E Unit 8 Elyria, Ohio USA Mississauga Ontario 44036-2125 L4Z 4G4 Canada 800-333-6900 800-668-5324 Part No 1143153 Rev F - 05/11 www.invacare.com...
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