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Invacare Nutron R50LX Owner's Operator And Maintenance Manual

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Owner's Operator and Maintenance Manual
Nutron® Series
R50™
, R51™,
LX
R51
, R51
LX
LXP
DEALER: This manual MUST be given to
the user of the wheelchair.
USER: BEFORE using this wheelchair, read
this manual and save for future reference.
For more information regarding Invacare
products, parts, and services, please visit
www.invacare.com

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Summary of Contents for Invacare Nutron R50LX

  • Page 1 , R51™, , R51 DEALER: This manual MUST be given to the user of the wheelchair. USER: BEFORE using this wheelchair, read this manual and save for future reference. For more information regarding Invacare products, parts, and services, please visit www.invacare.com...
  • Page 2 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. NOTE: Updated versions of this manual are available on www.invacare.com.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS REGISTER YOUR PRODUCT ... 6 SPECIAL NOTES ... 9 TYPICAL PRODUCT PARAMETERS ... 10 SECTION 1—GENERAL GUIDELINES ... 11 Repair or Service Information ...11 Operating Information...11 Tire Pressure ...12 Electrical Accessories ...12 Grounding Instructions ...13 Batteries...13 Charging Batteries ...13 Rain Test...14 Weight Training ...14 Weight Limitation...14...
  • Page 4 TABLE OF CONTENTS SECTION 5—WHEELCHAIR OPERATION ... 27 Operating the Wheelchair...27 Turning the Power On/Off ...27 Using the Joystick to Drive the Chair ...28 Using the Horn ...28 SPJ™Joystick Switches and Indicators ...29 Multi-Function Charger Port...29 On/Off Toggle Switch ...29 Speed Control Knob ...29 Joystick...29 Information Gauge Display ...29...
  • Page 5 TABLE OF CONTENTS Changing the Back Angle ...41 SECTION 9—UPHOLSTERY/SEAT POSITIONING STRAP ... 43 Replacing Seat Upholstery...43 Replacing Back Upholstery ...43 Replacing Seat Positioning Strap ...44 SECTION 10—JOYSTICK ... 46 Preparing the Joystick For Use...46 Repositioning the Joystick...47 SECTION 11—CASTERS ... 48 Adjusting Forks ...48 SECTION 12—BATTERIES ...

  • Page 6: Register Your Product

    3. Receive updates with product information, maintenance tips, and industry news. 4. Invacare can contact you or your provider, if servicing is needed on your product. 5. It will enable Invacare to improve product designs based on your input and needs.

  • Page 7: Product Registration Form

    11. User's Year of birth: ______________________________________________________ If at any time you wish not to receive future mailings from us, please contact us at Invacare Corporation, CRM Department, 39400 Taylor Parkway, Elyria, OH 44035, or fax to 877-619-7996 and we will remove you from our mailing list.
  • Page 8 Part No.1106645 Nutron® Series...

  • Page 9: Special Notes

    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.

  • Page 10: Typical Product Parameters

    UI gel cell 22NF gel cell (not available on 14-inch wide wheel- chairs) 0 to 4 (R50LX, R51, R51LX) or 0 to 6 (R51LXP) 35 inches 12 - 14 miles with UI batteries 18 - 22 miles with 22NF batteries 250 lbs.

  • Page 11: Section 1-General Guidelines

    SECTION 1—GENERAL GUIDELINES SECTION 1—GENERAL GUIDELINES Repair or Service Information Set‐up of the Electronic Control Unit is to be performed ONLY by individuals certified by  Invacare. The final adjustments of the controller may affect other activities of the  wheelchair. Damage to the equipment could occur under these circumstances. If  non‐certified individuals perform any work on these units, the warranty is void. Operating Information Performance adjustments should only be made by professionals of the healthcare field or  persons fully conversant with this process and the driverʹs capabilities. Incorrect settings  could cause injury to the driver, bystanders, damage to the chair and to surrounding  property. After the wheelchair has been set‐up, check to make sure that the wheelchair performs to  the specifications entered during the set‐up procedure. If the wheelchair does not  perform to specifications, turn the wheelchair off immediately and re‐enter set‐up  specifications. Repeat this procedure until the wheelchair performs to specifications. DO NOT shift your weight or sitting position toward the direction you are reaching as the  wheelchair may tip over. DO determine and establish your particular safety limits by practicing bending, reaching  and transferring activities in the presence of a qualified healthcare professional BEFORE  attempting active use of the wheelchair. DO NOT attempt to reach objects if you have to move forward in the seat. DO NOT attempt to reach objects if you have to pick them up from the floor by reaching  down between your knees. DO NOT lean over the top of the back upholstery to reach objects from behind as this may  cause the wheelchair to tip over. DO NOT use an escalator to move a wheelchair between floors. Serious bodily injury may  occur. Before attempting to transfer in or out of the wheelchair, every precaution should be  taken to reduce the gap distance. Turn both casters parallel to the object you are  transferring onto. Also be certain the power is off and the wheel locks are engaged to  prevent the wheels from moving.

  • Page 12: Tire Pressure

    SECTION 1—GENERAL GUIDELINES DO NOT attempt to lift the wheelchair by lifting on any removable (detachable) parts.  Lifting by means of any removable (detachable) parts of a wheelchair may result in injury  to the user or damage to the wheelchair. ALWAYS wear your seat positioning strap. The seat positioning strap is a positioning belt only. It is not designed for use as a safety  device withstanding high stress loads such as auto or aircraft safety belts. If signs of wear  appear, belt MUST be replaced immediately. Before performing any maintenance, adjustment or service verify that the ON/OFF switch  on the joystick is in the off position. 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. Avoid storage or use near external flame or combustible products. DO NOT engage or disengage the motor locks/clutches until the power is in the OFF  position. DO NOT operate on roads, streets or highways. DO NOT climb, go up or down ramps or traverse slopes greater than 9°. DO NOT attempt to move up or down an incline with a water, ice or oil film. DO NOT attempt to drive over curbs or obstacles. Doing so may cause your wheelchair  to turn over and cause bodily harm or damage to the chair. DO NOT leave the power button in the on position when entering or exiting your  wheelchair. DO NOT stand on the frame of the wheelchair. DO NOT use the footplates as a platform. When getting in or out of the wheelchair, make  sure that the footplates are in the upward position or swing footrests towards the outside  of the chair. Anti‐tippers MUST be used at all times. When outdoors on wet, soft ground or gravel  surfaces, anti‐tippers may not provide the same level of protection against tipover. Extra  caution must be observed when traversing such surfaces. Tire Pressure 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. The recommended tire pressure is listed on the side wall of the tire. Electrical Accessories EXTREME care should be exercised when using oxygen in close proximity to electric ...

  • Page 13: Grounding Instructions

    SECTION 1—GENERAL GUIDELINES 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. 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. Batteries The warranty and performance specifications contained in this manual are based on the  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. Charging Batteries NEVER attempt to recharge the batteries by attaching cables directly to the battery  terminals. DO NOT attempt to recharge the batteries and operate the wheelchair at the same time. DO NOT operate wheelchair with extension cord attached to the AC cable. DO NOT attempt to recharge the batteries when the wheelchair has been exposed to any  type of moisture. DO NOT attempt to recharge the batteries when the wheelchair is outside. DO NOT sit in the wheelchair while charging the batteries. READ and CAREFULLY follow the manufacturer’s instructions for each charger  (supplied or purchased). If charging instructions are not supplied, consult a qualified  technician for proper procedures. After charging batteries, ALWAYS make sure that the battery charger cord is unplugged.  Failure to do this could result in damage to the cord or personal injury to the user or  bystanders. Use of improper extension cord could result in risk of fire and electric shock. When using an extension cord, use only a three (3) wire extension cord having at least 16  AWG (American Wire Gauge) wire and the same or higher electrical rating as the device ...

  • Page 14: Rain Test

    DO NOT under any circumstances cut or remove the round grounding plug from the  charger AC cable plug or the extension cord plug. 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. Rain Test Invacare has tested its power wheelchairs in accordance with ISO 7176 Part 9 “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. DO NOT leave power wheelchair in a rain storm of any kind. DO NOT use power wheelchair in a shower or leave it in a damp bathroom while taking  a shower. DO NOT leave power wheelchair in a damp area for any length of time. Direct exposure to rain or dampness will cause the chair to malfunction electrically and  mechanically; may cause the chair to prematurely rust. Check to ensure that the battery covers are secured in place, joystick boot is not torn or  cracked where water can enter and that all electrical connections are secure at all times. DO NOT use the joystick if the boot is torn or cracked. If the joystick boot becomes torn  or cracked, replace immediately. Weight Training Invacare DOES NOT recommend the use of its wheelchairs as a weight training  apparatus. Invacare wheelchairs have not been designed or tested as a seat for any kind  of weight training. If occupant uses said wheelchair as a weight training apparatus,  Invacare shall not be liable for bodily injury, and the warranty is void. Weight Limitation The Nutron R50LX, R51 and R51LX have a weight limitation, including the seating  system, of 250 lbs. The Nutron R51LXP has a weight limitation of 300 lbs. Refer to  Percentage of Weight Distribution on page 21. Invacare recommends that only heavy‐duty wheelchairs be used for individuals  weighing more than 250 lbs. Further, the activity level of the individual wheelchair user  is important. For instance, a 170 lbs active wheelchair user could subject the wheelchair  to more stress than a 250 lbs user. Invacare recommends that very active users consider  using heavy‐duty wheelchairs. Part No.1106645 Nutron® Series...

  • Page 15: Section 2-Emi Information

    SECTION 2—EMI INFORMATION 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...
  • Page 16 EMI (as of May 1994) (the higher the level, the greater the protection); 2) The immunity level of the product is unknown. Modification of any kind to the electronics of this wheelchair as manufactured by Invacare may adversely affect the RFI immunity levels. Part No.1106645 WARNING...

  • Page 17: Section 3-Safety/Handling Of Wheelchairs

    “Safety and Handling” of the wheelchair requires the close attention of the wheelchair  user as well as the assistant. This manual points out the most common procedures and  techniques involved in the safe operation and maintenance of the wheelchair. It is  important to practice and master these safe techniques until you are comfortable in  maneuvering around the frequently encountered architectural barriers. Use this information only as a “basic” guide. The techniques that are discussed on the  following pages have been used successfully by many. 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. Techniques in this manual are a starting point for the new wheelchair  user and assistant with “safety” as the most important consideration for all. Stability and Balance WARNING ALWAYS wear your seat positioning strap. The seat positioning strap is a positioning belt only. It is not designed for use as a safety device withstanding high stress loads such as auto or aircraft safety belts.

  • Page 18: A Note To Wheelchair Assistants

    A Note to Wheelchair Assistants When assistance to the wheelchair user is required, remember to use good body  mechanics. Keep your back straight and bend your knees whenever tilting wheelchair or  traversing curbs, or other impediments. DO NOT attempt to lift the wheelchair by any removable (detachable) parts. Lift- ing by means of any removable (detachable) parts of a wheelchair may result in injury to the user or damage to the wheelchair. Also, be aware of detachable parts such as arms or leg‐rests. These must NEVER be used ...

  • Page 19: Stairways

    MUST be removed and transported independently of the power wheelchair. Extreme caution is advised when it is necessary to move an unoccupied power wheelchair up or down the stairs. Invacare recommends using two (2) assistants and making thorough preparations. Make sure to use only secure, non-detachable parts for hand-hold supports.

  • Page 20: Escalators

    6. The wheelchair should not be lowered until the last stair has been negotiated and the  wheelchair has been carried away from the stairway. Escalators DO NOT use an escalator to move a wheelchair between floors. Serious bodily injury may occur. Transferring To and From Other Seats ALWAYS turn the wheelchair power OFF and engage the clutches to prevent the wheels from moving BEFORE attempting to transfer in or out of the wheelchair. Also make sure every precaution is taken to reduce the gap distance by turning both casters parallel to the object you are transferring onto.

  • Page 21: Percentage Of Weight Distribution

    Transfer to and from the wheelchair in the presence of a qualified healthcare professional to determine individual safety limits. Invacare strongly recommends ordering the wheel locks as an additional safeguard for the wheelchair user.

  • Page 22: Reaching And Bending - Backward

    SECTION 3—SAFETY/HANDLING OF WHEELCHAIRS Reaching and Bending - Backward WARNING DO NOT lean over the top of the back upholstery. This will change your center of gravity and may cause you to tip over. NOTE: For this procedure, refer to FIGURE 3.3. 1. Position wheelchair as close as possible to the desired object. 2. Point the front casters as far forward as possible to create the longest possible  wheelbase.

  • Page 23: Section 4-Safety Inspection/Troubleshooting

    SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING NOTE: Every six (6) months or as necessary take your wheelchair to a qualified technician for a  thorough inspection and servicing. Regular cleaning will reveal loose or worn parts and enhance  the smooth operation of your wheelchair. To operate properly and safely, your wheelchair must be  cared for just like any other vehicle. Routine maintenance will extend the life and efficiency of your  wheelchair. Safety Inspection Checklists Initial adjustments should be made to suit your personal body structure needs and  preference. Thereafter follow these maintenance procedures: Inspect/Adjust Initially ❑ Ensure wheelchair rolls straight (no excessive drag or pull to one side). ❑ Ensure arms are secure but easy to release and adjustment levers engage properly. ❑ Ensure adjustable height arms operate and lock securely. ❑ Ensure arm pivot points are free of wear and looseness. ❑ Inspect seat and back upholstery for rips or sagging. ❑ Ensure armrest pads sit flush against arm tubes. ❑ Ensure seat release latch is functional. Replace if necessary. ❑ Ensure wheel mounting bolts are secure on drive wheels. ❑ Ensure no excessive side movement or binding when drive wheels are lifted and spun  when disengaged (freewheeling). ❑ Ensure wheel/fork assembly has proper tension when caster is spun. Caster should  come to a gradual stop. As with any vehicle, wheels and tires should be checked periodically for cracks and wear and should be replaced as necessary.

  • Page 24: Inspect/Adjust Monthly

    Inspect/Adjust Monthly ❑ Ensure arm pivot points are free of wear and looseness. ❑ Ensure wheel mounting bolts are secure on drive wheels. ❑ Ensure no excessive side movement or binding when drive wheels are lifted and spun  when disengaged (free‐wheeling). ❑ Ensure wheel/fork assembly has proper tension when caster is spun. Caster should  come to a gradual stop. As with any vehicle, wheels and tires should be checked periodically for cracks and wear and should be replaced as necessary. ❑ Loosen/tighten caster locknut if wheel wobbles noticeably or binds to a stop. ❑ Ensure all caster/wheel/fork/headtube fasteners are secure. ❑ Inspect for any loose hardware on the wheelchair. ❑ 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.

  • Page 25: Troubleshooting Guide

    Electrical malfunction. after recharging. Nutron® Series PROBABLE CAUSE Have batteries checked for shorted cell. Replace if necessary. Contact Dealer/Invacare for service. Check batteries for shorted cell. Replace if necessary. Contact Dealer/Invacare for service. Contact Dealer/Invacare for service. Have charger checked.

  • Page 26: Checking Battery Charge Level

    Checking Battery Charge Level The following “Do’s” and “Don’ts” are provided for your convenience and safety. DON’T Don’t perform any installation or maintenance without first reading this manual. Don’t perform installation or maintenance of bat- teries in an area that could be damaged by bat- tery spills. Don’t make it a habit to discharge batteries to the lowest level.

  • Page 27: Section 5-Wheelchair Operation

    NOTE: For this procedure, refer to FIGURE 5.1. 1. Turn the power on by moving the on/off switch up or down. The switch automatically  retracts back to center position. NOTE: After turning power on, all indicators  will light briefly, and the display gauge will  indicate one of the following: A. The Current Battery Charge ‐  Information gauge shows all LEDʹs lit  or partial LEDʹs lit. B. Out Of Neutral at Power Up ‐  Information Gauge shows all LEDʹs  flashing slowly. This occurs when the  power is turned on when the joystick is  out of neutral. This feature prevents  sudden and unexpected movements of  the power chair. 2. Turning the power off can be achieved  by moving the on/off switch up or  down. The switch automatically  retracts back to center position. Nutron® Series WARNING INVACARE FIGURE 5.1 Operating the Wheelchair Information Gauge On/Off Toggle Switch Part No.1106645...

  • Page 28: Using The Joystick To Drive The Chair

    Using the Joystick to Drive the Chair NOTE: For this procedure, refer to FIGURE 5.2.  The joystick is located at the front of the joystick housing and provides smooth control of  speed and direction. It is equipped with 360 degrees of mobility for ease of operation. The  joystick is spring‐loaded, and automatically returns to the upright (neutral) position  when released. Pushing the joystick in a given direction causes the chair to move in that  direction.  The joystick has proportional drive control, meaning that the further the joystick is  pushed from the upright (neutral) position, the faster the wheelchair moves. The  maximum speed, however, is limited by the setting of the speed control knob. To slow the wheelchair to a stop, simply release the joystick. The wheelchair has  automatic speed and direction compensation to minimize corrections. When first learning to drive, select a SLOW speed and try to drive the wheelchair AS  SLOWLY as possible by pushing the joystick slightly forward. This exercise will help you  learn to utilize the full potential of the proportional control and allow you to start and  stop smoothly. To drive the wheelchair, perform the following: 1. Adjust speed control knob to the appropriate setting. 2. Turn the power on. Refer to Turning the Power On/Off on page 27. 3. Move the joystick in the following manner: MOVEMENT FORWARD REVERSE Turn RIGHT Turn LEFT STOP Using the Horn NOTE: For this procedure, refer to FIGURE 5.2. ...

  • Page 29: Spj™Joystick Switches And Indicators

    SPJ™Joystick Switches and Indicators NOTE: For the following information, refer to FIGURE 5.3. Multi-Function Charger Port Located at the front of the joystick housing. This provides easy access for charging the  wheelchair batteries. This port also serves as the Remote Programmer Communication  connection. On/Off Toggle Switch This toggle switch is located at the back of  the joystick housing.  Speed Control Knob The speed control knob is located on the  back of the joystick housing. This rotary  switch is used for controlling the speed  and acceleration of the wheelchair.  1. Turn the knob clockwise to increase the  speed of the wheelchair. 2. Turn the knob counterclockwise to  decrease the speed of the wheelchair. Joystick The joystick has proportional drive control, meaning that further the wheelchair is  pushed from the upright (neutral) position, the faster it moves. Your top speed, however,  is limited by the setting of the speed‐control knob and programmed settings. To slow the wheelchair to a stop, simply release the joystick. The wheelchair has  automatic speed and direction compensation to minimize corrections. Information Gauge Display Located on the front of the joystick housing, it provides the following information to the  user on the status of the wheelchair: •...
  • Page 30 The Information Gauge display also serves as a system diagnostic device when a fault is  detected by the control module. A specific number of flashes of the LEDs indicates the  type of fault detected. Refer to the following table of the diagnostic indications of the  wheelchair status. DISPLAY DESCRIPTION All three (3) LEDs are off. INVACARE All three (3) LEDs are on. INVACARE RED LED is flashing. INVACARE Left to Right “chase” alter- nating with steady display. INVACARE GREEN LED is flashing. INVACARE All LEDs are flashing slowly.

  • Page 31: Section 6-Front Riggings

    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. Installing/Removing the Footrests NOTE: For this procedure, refer to FIGURE 6.1. Installing 1. Turn footrest to the side (open footplate is perpendicular to wheelchair) and position  mounting holes in the footrest hinge plates with hinge pins on the wheelchair frame.

  • Page 32: Adjusting The Footrest Height

    Adjusting the Footrest Height Model PW93, PW93E, and PW93ST Footrests NOTE: For this procedure, refer to FIGURE 6.2. 1. Remove any accessory from the footrest(s). 2. Remove the footrest from the wheelchair. Refer to Installing/Removing the Footrests  on page 31. NOTE: Lay footrest on a flat surface to simplify procedure. 3. Remove the hex bolt, coved washers and locknut that secure the lower footrest to the  footrest support. 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. 6. Repeat STEPS 1‐5 for the other footrest, if necessary. 7. Reinstall the footrest(s) onto the wheelchair. Refer to Installing/Removing the  Footrests on page 31. 8. Reinstall any accessory onto the footrest(s). Locknut NOTE: PW93ST style footrest shown. PW93 and PW93E footrests adjust the same way. FIGURE 6.2 Adjusting the Footrest Height - Model PW93, PW93E, and PW93ST Footrests Part No.1106645 Footrest Support Coved Washer...

  • Page 33: Model 93M, 904A, Pal4A, And Pas4A Footrests

    Model 93M, 904A, PAL4A, and PAS4A Footrests NOTE: For this procedure, refer to FIGURE 6.3. 1. Loosen, but do not remove the lug bolt and locknut that secure the lower footrest to  the footrest support. 2. Reposition the lower footrest to the desired height. 3. Securely tighten the lug bolt and locknut that secure the lower footrest to the footrest  support. 4. Repeat STEPS 1‐3 for the other footrest, if necessary. NOTE: 93M style footrest shown. 904A, PAL4A and PAS4A footrests adjust the same way. FIGURE 6.3 Adjusting the Footrest Height - Model 93M, 904A, PAL4A, and PAS4A Footrests 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.

  • Page 34: Installing/Removing Elevating Legrests

    Installing/Removing Elevating Legrests NOTE: For this procedure, refer to FIGURE 6.5. Installing 1. Turn legrest to side (open footplate is  perpendicular to wheelchair) and  position mounting holes in the legrest  hinge plates with hinge pins on the  wheelchair frame.  2. Install the legrest hinge plates onto the  hinge pins on the wheelchair frame. 3. Rotate legrest toward the inside of the  wheelchair until it locks in place. NOTE: The footplate will be on the inside of the  wheelchair when locked in place. 4. Repeat STEPS 1‐3 for the other legrest. 5. After seated in wheelchair, adjust footplate to correct height by loosening nut and  sliding the lower footrest assembly up or down until desired height is achieved. Removing 1. Push the legrest release handle toward the inside of the wheelchair (facing the front of  the wheelchair) and swing the legrest to the outside of the wheelchair. 2. Lift up on the legrest and remove from the wheelchair. 3. Repeat STEPS 1‐2 for the other legrest. Raising/Lowering Elevating Legrests and/or Adjusting Calfpads NOTE: For this procedure, refer to FIGURE 6.6. Raising/Lowering Elevating Legrests 1.

  • Page 35: Adjusting Calfpads

    Adjusting Calfpads 1. Turn calfpad towards the outside of the wheelchair. 2. Slide calfpad up or down until desired position is obtained. NOTE: If one (1) of the top two (2) calfpad adjustment positions is being used, the legrest will need  to be raised to avoid interference with the front stabilizers while going over obstacles or going up  and down ramps. Refer to Raising/Lowering Elevating Legrests on page 34. 3. Turn the calfpad toward the inside of the wheelchair. Release Lever Top Two (2) Calfpad Adjustment Positions FIGURE 6.6 Raising/Lowering Elevating Legrests and/or Adjusting Calfpads Adjusting/Replacing Telescoping Front Rigging Support NOTE: For this procedure, refer to FIGURE 6.7. NOTE: When adjusting the telescoping front rigging support depth, ensure the footplate does not  interfere with the caster wheel rotation. 1. Lift up on the crossbraces until they release from the H‐blocks on the wheelchair  frame. 2.
  • Page 36 4. Perform one (1) of the following: • Adjusting: NOTE: Telescoping front rigging supports may be extended up to 2‐inches from the wheelchair  frame in 1‐inch increments. This adjustment does not effect seat depth. i. Position the telescoping front rigging support to the desired depth. • Replacing: i. Remove the existing telescoping front rigging support from the wheelchair  frame. ii. Insert the new telescoping front rigging support into the wheelchair frame. iii. Position the telescoping front rigging support to the desired depth. NOTE: The footplate will be on the inside of the wheelchair when locked in place. 5. Using the front and rear socket bolts and two (2) locknuts, secure the telescoping front  rigging support to the wheelchair frame as shown in FIGURE 6.7. 6. Using the long socket bolt and locknut, secure the H‐block and spacer to the  wheelchair frame and the telescoping front rigging support as shown in FIGURE 6.7. 7. Snap crossbraces into H‐blocks. Wiggle crossbraces to make sure they are secured in  the H‐blocks. 8. If necessary, repeat STEPS 1‐8 on remaining telescoping front rigging support. Wheelchair Frame Rear Socket Bolt Long Socket Bolt Front Socket Bolt FIGURE 6.7 Adjusting/Replacing Telescoping Front Rigging Support Part No.1106645 H-Block...

  • Page 37: Section 7-Arms

    SECTION 7—ARMS After ANY adjustments, repair or service and BEFORE use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result. Adjusting Armrest Height NOTE: For this procedure, refer to FIGURE 7.1. Make sure the height adjustment lever is in the locked position before using the wheelchair.

  • Page 38: Using Swing-Back Arms

    Using Swing-Back Arms Make sure the armrest release lever is in the locked position before using the wheel- chair. NOTE: For this procedure, refer to FIGURE 7.2. 1. Unlock the swing‐back arms by rotating the armrest release lever toward the outside  of the wheelchair. 2. Pull the front of the swing‐back arm  straight up/out of the arm socket and  toward the rear of the wheelchair. 3. To use the swing‐back arm, push the  swing‐back arm toward the front of the  wheelchair and then downward into  the arm socket. NOTE: Armrest release lever MUST be in the  unlocked position when placing armrest into  the arm sockets.  4. Lock the swing‐back arms by rotating  the armrest release lever toward the  inside of the wheelchair. Replacing Desk/Full Length Armrest Pad and/or Clothing Guards (Fixed Height Arms Only) NOTE: For this procedure, refer to FIGURE 7.3.

  • Page 39: Removing/Installing Armrest

    Mounting Screws Clothing Guard Mounting Screws FIGURE 7.3 Replacing Desk/Full Length Armrest Pad and/or Clothing Guards (Fixed Height Removing/Installing Armrest Make sure the armrest release lever is in the locked position before using the wheel- chair. NOTE: For this procedure, refer to FIGURE 7.4. Removing 1. Unlock the armrest by turning the armrest release levers towards the outside of the  wheelchair.

  • Page 40: Section 8-Back

    SECTION 8—BACK After ANY adjustments, repair or service and BEFORE use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result. Adjusting the Back Height NOTE: For this procedure, refer to FIGURE 8.1. NOTE: Back canes must be adjusted to the same height. NOTE: Take note of the position and orientation of the back cane mounting hardware before  removing. The fold down back canes use two (2) mounting screws to secure the two (2) back canes  to the wheelchair frame, the adjustable angle back canes use four (4) mounting screws. 1. Remove the mounting screws and locknuts that secure the two (2) back canes to the  back cane mounting tube. 2. Reposition the back canes to the desired height adjustment position as shown in  FIGURE 8.1.

  • Page 41: Using The Fold Down Back Canes (R51, 51Lx And R51Lxp Models Only)

    Using the Fold Down Back Canes (R51, 51LX and R51LXP Models Only) The back MUST be locked securely in place before using the wheelchair. NOTE: For this procedure, refer to FIGURE 8.2. 1. Perform one (1) of the following: • Unfold ‐ Push/pull the back toward rear of wheelchair until it locks in place. • Fold ‐ Pull up on the back release latches and push the back toward the front of the  wheelchair. BACK Back Locked Securely FIGURE 8.2 Using the Fold Down Back Canes (R51, 51LX and R51LXP Models Only) Changing the Back Angle NOTE: For this procedure, refer to FIGURE 8.3.
  • Page 42 3. Position the back angle plate to one (1) of six (6) back angles. Refer to Detail “A” of  FIGURE 8.3. 4. Reinstall the front hex screw and washer, securely tighten with locknut. Refer to  FIGURE 8.3 for correct hardware orientation. 5. Securely tighten the rear hex screw that secures the back adjustment plate to the  wheelchair frame. Back Angle Plate Rear Hex Screw (Loosen, but do not Remove) Front Screw FIGURE 8.3 Changing the Back Angle Nutron® Series Washer Locknut Wheelchair Frame Detail “A” Back Angle Plate Back Angles 85º...

  • Page 43: Section 9-Upholstery/Seat Positioning Strap

    SECTION 9—UPHOLSTERY/SEAT POSITIONING STRAP After ANY adjustments, repair or service and BEFORE use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result. Replacing Seat Upholstery NOTE: For this procedure, refer to FIGURE 9.1. 1. Remove the eight (8) phillips screws  and washers that secure the existing  seat upholstery to the crossbraces. 2. Remove existing seat upholstery from  the crossbraces. 3.

  • Page 44: Replacing Seat Positioning Strap

    4. Pull the loose back canes out of the existing back upholstery. 5. Slide the loose back canes into the new back upholstery. 6. Secure the back canes to the wheelchair frame with the mounting screws and locknuts  removed in STEP 1. 7. Secure the new back upholstery to the back canes with the two (2) existing upholstery  mounting screws and washers. Washer Upholstery Mounting Screws Back Upholstery FIGURE 9.2 Replacing Back Upholstery Replacing Seat Positioning Strap NOTE: For this procedure, refer to FIGURE 9.3. 1. If necessary, remove the seat cushion from the seat upholstery. 2. Remove the two (2) rear phillips screws and washers that secure the seat upholstery  and seat positioning strap to the crossbraces. 3. Remove the two (2) halves of the seat positioning strap from the crossbraces. 4. Position the two (2) new seat positioning strap halves between the seat upholstery and  the crossbraces. 5. Reinstall the rear phillips screws and washers that secure the seat upholstery and seat  positioning strap to the crossbraces. NOTE: Washer is positioned on top of seat upholstery.
  • Page 45 SECTION 9—UPHOLSTERY/SEAT POSITIONING STRAP Rear Phillips Screw Washer Seat Upholstery Seat Positioning Strap Crossbrace FIGURE 9.3 Replacing Seat Positioning Strap Nutron® Series Part No.1106645...

  • Page 46: Section 10-Joystick

    SECTION 10—JOYSTICK After ANY adjustments, repair or service and BEFORE use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result. Preparing the Joystick For Use NOTE: For this procedure, refer to FIGURE 10.1. NOTE: The joystick is factory installed on the right side of the wheelchair. To reposition the joystick  onto the left side of the wheelchair refer to Repositioning the Joystick on page 47. The joystick  should be repositioned by a qualified technician. 1. Turn the adjustment lock lever to release the joystick mounting tube from the  mounting bracket. 2.

  • Page 47: Repositioning The Joystick

    Repositioning the Joystick NOTE: For this procedure, refer to FIGURE 10.2. 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 (3) hex screws that secure the halves (½) of the mounting bracket to  the arm tube. 4. Reposition mounting bracket on opposite arm tube ensuring the threaded plate of the  mounting bracket is on the inside of the arm tube as shown in FIGURE 10.2. 5. Using the three (3) hex mounting screws and washers, secure the halves (½) of the  mounting bracket to the arm tube. 6. Slide the joystick mounting tube through the mounting bracket to the desired  position. 7. Turn the adjustment lock lever to secure the joystick mounting tube into the mounting  bracket. Washers Mounting Screws Adjustment Lock Lever FIGURE 10.2 Repositioning the Joystick Part No.1106645 Mounting Bracket (Threaded Plate) Tube Mounting...

  • Page 48: Section 11-Casters

    SECTION 11—CASTERS 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. As with any vehicle, the wheels, casters and tires should be checked periodically for cracks and wear and should be replaced.

  • Page 49: Section 12-Batteries

    The use of rubber gloves and chemical goggles or face shields is recommended when working with batteries. Invacare strongly recommends that battery installation and battery replacement ALWAYS be done by a qualified technician. 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.

  • Page 50: Recommended Battery Types

    Recommended Battery Types 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. Failure to use the correct battery size and/or voltage may cause damage to your wheelchair and give you unsatisfactory performance.

  • Page 51: Installing/Removing The Battery Boxes

    2. Remove the existing batteries from the battery boxes. Refer to Installing/Removing the  Batteries Into/From the Battery Boxes on page 53. 3. Clean the new battery terminals. Refer to Cleaning Battery Terminals on page 62. 4. Install the new batteries into the battery boxes. Refer to Installing/Removing the  Batteries Into/From the Battery Boxes on page 53 of this manual. 5. Install the battery boxes onto the wheelchair. Refer to Installing/Removing the Battery  Boxes on page 51 of the manual. Installing/Removing the Battery Boxes NEVER unplug the battery cables by pulling on the wires. Unplug the battery cables by pulling on the connector ONLY. Otherwise injury or damage may result. NOTE: For this procedure, refer to FIGURE 12.2.

  • Page 52: Installing/Removing The Battery Tray

    16, 18, and 20-Inch Wide Wheelchair Detail “A” Battery Tray Front Battery Box Rear Battery Box Retaining Strap Clip Detail “B” (To Controller) Front Battery Box Connectors Rear Battery Box Connector Retaining Strap Clip FIGURE 12.2 Installing/Removing the Battery Boxes Installing/Removing the Battery Tray NOTE: For these procedures, refer to FIGURE 12.3.

  • Page 53: Installing/Removing The Batteries Into/From The Battery Boxes

    The use of rubber gloves and chemical goggles or face shields 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 result.
  • Page 54 NOTE: Have the following tools available: TOOL Battery lifting strap 1/2-inch (6 pt) box wrench 7/16-inch (6pt) Box Wrench 3/8-inch (6pt) Box Wrench Diagonal cutters NOTE: The battery lifting strap supplied is for Group 22 batteries ONLY. Refer to the battery  manufacturer for the proper lifting strap and/or battery tools for U1 battery removal/installation. NOTE: If there is battery acid in the bottom or on the sides of the battery box(es) or battery(ies),  apply baking soda to these areas to neutralize the battery acid. Before reinstalling the new or  existing battery(ies), clean the baking soda from the battery box(es) or battery(ies). NOTE: When securing battery lifting strap to battery, observe polarity markings located on the  ends of the battery lifting strap, (+) side to POSITIVE (+) battery terminal/post and (‐) side to  NEGATIVE (‐) battery terminal/post. 1. If necessary, remove the battery boxes from the wheelchair. Refer to  Installing/Removing the Battery Boxes on page 51. 2. Secure the battery lifting strap to battery terminal(s)/post(s). Some battery manufacturers mold a carrying strap and/or hold down flanges directly into the battery case.

  • Page 55: Connecting Battery Cables

    Connecting Battery Cables The use of rubber gloves and chemical goggles or face shields is recommended when working with batteries. 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 per- sonal injury or damage may occur.
  • Page 56 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 Detail “A” or Detail “B” of FIGURE 12.6 (depending on battery type), otherwise damage to the battery cable may result when installing battery terminal caps. 2.
  • Page 57 NEGATIVE (-) Battery 1/4-20 x 7/8-inch Hex Flange Screw POSITIVE (+) Battery Terminal/Post CONNECT CABLE RING TERMINAL TO THIS SIDE OF TERMINAL/POST Detail “B” - Dual Group 22 NF Batteries POSITIVE (+) Red POSITIVE (+) Battery Battery Cable Terminal/Post 1/4-20 Hex Flange Locknuts NEGATIVE (-) Black...

  • Page 58: Battery Clamp Method

    Battery Clamp Method The battery clamp of the POSITIVE (+) battery terminal/post MUST be mounted in the position shown in FIGURE 12.7, otherwise the battery box top cannot be installed properly. NOTE: For this procedure, refer to FIGURE 12.7, FIGURE 12.8 and FIGURE 12.9. Correct Orientation of the POSITIVE (+) Terminal/Post Clamp POSITIVE (+) Terminal/Post (Note position of clamp) Hex Nut...
  • Page 59 2. Install battery clamp covers onto battery cables (FIGURE 12.8) ‐ A. RED battery clamp cover onto RED battery cable. B. BLACK battery clamp cover onto BLACK battery cable. NOTE: Only one (1) battery cable and battery clamp cover are shown for clarity. Both battery  clamp covers install in the same manner. Battery Clamp Cover FIGURE 12.8 Installing Battery Clamp Cover When connecting the battery cable/ring terminal(s) to the battery(ies) clamp(s), the battery cable(s) MUST be connected in the position shown in Detail “A” of FIGURE 12.9.
  • Page 60 POSITIVE (+) NEGATIVE (-) BLACK Cable NOTE:  Clamps exploded for  clarification purposes only. Group 22NF Battery Detail “A” POSITIVE (+) Fuse box placement when box top is installed POSITIVE (+) Terminal/Post and Clamp FIGURE 12.9 Connecting Battery Cables -Battery Clamp Method Part No.1106645 Exploded View RED Cable NEGATIVE (-) Terminal/Post...

  • Page 61: Replacing The Battery Box Retaining Strap

    Replacing the Battery Box Retaining Strap NOTE: For this procedure, refer to FIGURE 12.10. The battery box retaining strap MUST be fastened securely and adjusted properly to hold battery boxes in place before using the wheelchair. 1. Remove the battery boxes from the wheelchair. Refer to Installing/Removing the  Battery Boxes on page 51. 2. Remove the battery tray from the wheelchair. Refer to Installing/Removing the Battery  Tray on page 52. The retaining strap MUST be fed through the adjustable end of the battery box retaining strap buckle as shown in FIGURE 12.10.

  • Page 62: Cleaning Battery Terminals

    SECTION 12—BATTERIES Retaining Strap Adjustable End Buckle Retaining Strap Battery Tray Battery Tray Slots Slots Retaining Strap Retaining Strap FIGURE 12.10 Replacing the Battery Box Retaining Strap Cleaning Battery Terminals WARNING Most batteries are not sold with instructions. However, warnings are frequently displayed on the cell caps.

  • Page 63: Charging Batteries

    SECTION 12—BATTERIES Charging Batteries When To Charge Batteries NOTE: For this procedure, refer to FIGURE 12.11. Recharge the batteries frequently. Do not wait until the battery charge is low to recharge.  A battery’s life is extended if the charge level is maintained well above a low condition. Information Gauge ‐ Located on the joystick housing. The information gauge is the  primary source of user feedback. The true state‐of‐battery‐charge notification is as follows:  Any GREEN LED lit ‐ Batteries are at full  or well charged. Only AMBER and RED LEDs lit ‐ Batteries  are moderately charged. Recharge before  undertaking a long trip. Battery Discharge Indicator (BDI) Only RED LED lit ‐ Battery charge is low.  Recharge as soon as possible. NOTE: Accurate readings are displayed when  in neutral. FIGURE 12.11 When To Charge Batteries WARNINGS Never attempt to recharge the batteries by attaching cables directly to the battery terminals or clamps.

  • Page 64: Description And Use Of Battery Chargers

    NOTE: If performing the charging procedures independently, READ and CAREFULLY follow the  individual instructions for each charger (supplied or purchased). NOTE: If charging instructions are not supplied, consult a qualified service technician for proper  procedures. Required items: TOOL QUANTITY Battery Charger Extension Cord* NOTE: 3‐prong plug, 15 ampere current rating; industrial type Connecting the Battery Charger NOTE: For this procedure, refer to FIGURE 12.12. 1. Attach the battery charger connector to the charger port on the front of the joystick. 2. Plug the charger’s AC power cord, or extension, into the grounded 120 VAC wall  outlet. 3. Wait until charging is complete. NOTE: 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. FIGURE 12.12 Charging Batteries Part No.1106645 COMMENTS Supplied Not Supplied Charger Port Nutron® Series...

  • Page 65: Section 13-Clutch/Motor Lock

    SECTION 13—CLUTCH/MOTOR LOCK After ANY adjustments, repair or service and BEFORE use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result. Engaging/Disengaging the Clutches DO NOT engage or disengage the clutches until the power is off. NOTE: For this procedure, refer to FIGURE 13.1.

  • Page 66: Disengaging/Engaging The Motor Lock Levers - R51Lxp Only

    • To Disengage: turn the clutch handles until they are pointing toward the rear  wheels. NEVER try to turn the clutch handles toward the inside of the wheelchair. Disengaging/Engaging the Motor Lock Levers - R51LXP Only DO NOT engage or disengage motor locks until the power is in the off position. NOTE: For this procedure, refer to FIGURE 13.2. NOTE: Motor lock disengagement/engagement allows free‐wheeling or joystick controlled  operation. Free‐wheeling allows an assistant to maneuver the wheelchair without power. Four Pole Motors 1. Perform one (1) of the following: • Disengage (push) ‐ Push motor lock levers downward. • Engage (drive) ‐ Pull motor lock levers upward. Toward Outside of Wheelchair FIGURE 13.2 Disengaging/Engaging the Motor Lock Levers - R51LXP Only Part No.1106645...

  • Page 67: Section 14-Wheel Locks

    Wheel locks are an option on RWD (you can order with or without wheel locks). Transfer to and from the wheelchair in the presence of a qualified health care pro- fessional to determine individual safety limits. Invacare strongly recommends ordering the wheel locks as an additional safeguards for the wheelchair user.

  • Page 68: Using

    SECTION 14—WHEEL LOCKS Lock Unlock Wheel Lock Handle Hex Screw Wheelchair Frame Wheel Lock Shoe 5/32 to 5/16-inch Rear Wheel FIGURE 14.1 Installing/Adjusting/Using the Wheel Locks Using The wheelchair is equipped with a pair of independently operated wheel locks located  just in front of the rear wheels. 1. To engage the wheel locks, grip the handle and push forward to the lock position. 2. To disengage, reverse STEP 1. CAUTION DO NOT use the wheel locks when the wheelchair power is on and the clutches are engaged - otherwise damage to the wheelchair may result.

  • Page 69: Section 15-Anti-Tippers

    SECTION 15—ANTI-TIPPERS After ANY adjustments, repair or service and BEFORE use, make sure all attaching hardware is tightened securely - otherwise injury or damage may result. Installing/Removing the Anti-Tippers Anti-tippers MUST be fully engaged and spring buttons fully protruding out of adjustment holes BEFORE using the wheelchair.
  • Page 70 SECTION 15—ANTI-TIPPERS Rear Wheel Anti-tipper Wheelchair Frame Release Button Anti-tipper 1-1/2 to 2-inch Clearance FIGURE 15.1 Installing/Removing the Anti-Tippers Part No.1106645 Nutron® Series...

  • Page 71: Section 16—Transporting

    The weight of the wheelchair without the user and batteries is approximately 79 lbs. Use proper lifting techniques (lift with your legs) to avoid injury. Extreme caution is advised when it is necessary to move an unoccupied power wheelchair. Invacare recommends using two (2) assistants and making thorough preparations. Make sure to use ONLY secure, non-detachable parts for hand-hold supports.
  • Page 72 SECTION 16—TRANSPORTING Refer to Installing/Removing the Battery Boxes on page 51 and Installing/Removing the Battery Tray on page 52. Refer to Installing/Removing the Anti-Tippers on page 69. Refer to Installing/Removing the Footrests on page 31 or Installing/Removing Elevating Legrests on page 34. FIGURE 16.1 Transporting the Nutron Part No.1106645 Nutron®...
  • Page 73 SECTION 16—TRANSPORTING NOTES Nutron® Series Part No.1106645...
  • Page 74 SECTION 16—TRANSPORTING NOTES Part No.1106645 Nutron® Series...

  • Page 75: Limited Warranty

    In the event you do not receive satisfactory warranty service, please write directly to Invacare at the address on the bottom of the back cover. Provide dealer's name address, date of purchase, indicate nature of the defect and, if the product is serialized, indicate the serial number.
  • Page 76 Elyria, Ohio USA Mississauga Ontario 44036-2125 L4Z 4G4 Canada 800-333-6900 800-668-5324 Invacare and Nutron are registered trademarks of Invacare Corporation. Yes, you can., MK5, EX, NX, R50, R51, and SPJ are trademarks of Invacare Corporation © 2004 Invacare Corporation Part No.1106645...

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