DEALER: This manual MUST be given to
the user of the product.
USER:
manual and save for future reference.
BEFORE using this product, read this
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.
WHEELCHAIR USERS: DO NOT SERVICE OR OPERATE THIS
EQUIPMENT WITHOUT FIRST READING AND UNDERSTANDING
(1) THE OWNER’S OPERATOR AND MAINTENANCE MANUAL
AND (2) 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.
DEALERS AND QUALIFIED TECHNICIANS: DO NOT SERVICE OR
OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND
UNDERSTANDING (1) THE OWNER’S OPERATOR AND
MAINTENANCE MANUAL, (2) THE SERVICE MANUAL (IF
APPLICABLE) AND (3) THE SEATING SYSTEM’S MANUAL (IF
APPLICABLE). IF YOU ARE UNABLE TO UNDERSTAND THE
WARNINGS, CAUTIONS AND INSTRUCTIONS, CONTACT
INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO
SERVICE OR OPERATE THIS EQUIPMENT - OTHERWISE, INJURY
OR DAMAGE MAY RESULT.
REFERENCE DOCUMENTS
DOCUMENTPART NUMBER
MK6i™Electronics Field Service Guide1141471
MK6i Electronics Service Manual1143203
Formula TRE Service Manual1123820
WARNING
Refer to wheelchair base owner’s manual for additional safety and operation
information.
NOTE: Updated versions of this manual are available on www.invacare.com.
All Wheelchairs...........................................................................................................................................7
Wheelchairs with Elevate .........................................................................................................................8
Wheelchairs with Ventilator Trays ........................................................................................................8
Weight Training ........................................................................................................................................14
2. Ensuring long-term maintenance and servicing of your product.
3. Receiving updates with product information, maintenance tips and industry news.
Register ONLINE at warranty.invacare.com
Please have your model number and purchase date available to complete your registration.
Any registration information you submit will only be used by Invacare Corporation and
protected as required by applicable laws and regulations.
Formula™ Powered Seating4Part No 1122170
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 WORDMEANING
Danger indicates an imminently hazardous situation which, if not avoided,
DANGER
WARNING
CAUTION
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO
CHANGE WITHOUT NOTICE.
WHEELCHAIR USER
will result in death or serious injury.
Warning indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
Caution indicates a potentially hazardous situation which, if not avoided,
may result in property damage.
NOTICE
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. Invacare highly
recommends working with a certified rehab technology supplier and/or a member
of NRRTS or RESNA.
WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT RESTRAINTS (TRBKTS)
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.
TRBKTS WARNINGS
Only use the transport brackets included with TRBKTS for the purposes described
in this manual.
Part No 11221705Formula™ Powered Seating
SPECIAL NOTES
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.
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.
To determine and establish your particular safety limits, practice use of this product
on various sloping surfaces in the presence of a qualified healthcare provider before
attempting active use of this wheelchair. Other general warnings listed within this
document also apply.
Wheelchairs should be examined during maintenance for signs of corrosion (water
exposure, incontinence, etc.). Electrical components damaged by corrosion should
be replaced IMMEDIATELY.
Wheelchairs that are used by incontinent users and/or are frequently exposed to
water may require replacement of electrical components more frequently.
Refer to wheelchair base owner’s manual for additional safety and operation
information.
POWERED SEATING SYSTEM WARNINGS
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.
Formula™ Powered Seating6Part No 1122170
LABEL LOCATIONS
LABEL LOCATIONS
NOTE: Refer to Owner’s Manual shipped with wheelchair base for additional labels located on
wheelchair base.
All Wheelchairs
Weight Capacity Label
located here
Serial Number
Located HERE
WARNING
reposition the seat - otherwise serious personal injury
and damage will result.
Refer to Service Manual to
P/N 1114823 Rev B - 5/10/06
NOTE: Auto style seat
positioning strap shown. This
label is also on the airline style
seat positioning strap.
TILT ONLY, TILT/ELEVATE AND ELEVATE
ONLY:85° - 105° in 5° increments
TILT RANGE
TILT, TILT/RECLINE OR TILT/RECLINE/ELEVATE
0° Seat Angle:
5° Seat Angle:
RECLINE RANGE (MEASURED RELATIVE
TO THE GROUND)
RECLINE ONLY, TILT/RECLINE AND TILT/
RECLINE/ELEVATE
0° Seat Angle:
5° Seat Angle:
SEAT-TO-FLOOR
0° SEAT ANGLE:
5° SEAT ANGLE:
ELEVATE RANGE:7.0 inches
*OVERALL WIDTH WITH MODEL RA19
ARMS
WITH 4-WAY SWITCH:
OVER ARMPADS:
*OVERALL HEIGHT (CONVENTIONAL
BACK WITHOUT HEADREST):41.5 inches
25 inches and 29.5 inches
N/A
0° - 55° ± 3°
5° - 60° ± 3°
90° - 170° ± 3°
95° - 170° ± 3°
18 inches ± .25 inches
19.8 inches ± .25 inches
30.70 inches
28.75 inches
NOTE: All dimensions are ± .50 inches unless otherwise indicated.
20 - 26 inches
16 - 24 inches
*NOTE: 20-inch deep x 20-inch wide with 24-inch high back.
**NOTE: Weight limitation is total weight (user weight plus any additional items that the user
may require [back pack, etc.]). Example: If weight limitation of the wheelchair is 300 lbs and
additional items equal 25 lbs, subtract 25 lbs from 300 lbs. This means the maximum weight
limitation of the user is 275 lbs.
Part No 11221709Formula™ Powered Seating
TYPICAL PRODUCT PARAMETERS
CONTOURA BACKSCONVENTIONAL
BACKS
*OVERALL LENGTH
WITH MANUAL CENTER MOUNT FOOTREST
AT 90°:
WITHOUT FRONT RIGGINGS, FULL LENGTH
ARM, MPJ™JOYSTICK:
ARMRESTS
TILT ONLY, TILT/ELEVATE AND ELEVATE
ONLY:
RECLINE ONLY, TILT/RECLINE AND TILT/
RECLINE/ELEVATE:
LEGRESTS:Swingaway Footrests, Power or Manual Center Mount
HEADRESTS:Curved, Contoured, Small or Large
WEIGHT LIMITATION:
ALL SEATING SYSTEMS WITH ELEVATE:
ALL SEATING SYSTEMS WITHOUT HEAVY
DUTY OPTION:
TILT ONLY, RECLINE ONLY OR TILT/RECLINE
SYSTEMS WITH HEAVY DUTY OPTION:
ALL SEATING SYSTEMS WITH VENT TRAY:
41.5 inches
37.38 inches
Flip Back, Adjustable Height (9 - 13 inches) - Desk or Full
Length
Adjustable Height (11 - 16 inches) - Desk or Full Length
Footrests, Manual or Power Elevating Legrests
300 lbs
300 lbs
400 lbs
Subtract 50 lbs from the seating system weight limitations
(250 and 350 lbs respectively)
NOTE: All dimensions are ± .50 inches unless otherwise indicated.
*NOTE: 20-inch deep x 20-inch wide with 24-inch high back.
**NOTE: Weight limitation is total weight (user weight plus any additional items that the user
may require [back pack, etc.]). Example: If weight limitation of the wheelchair is 300 lbs and
additional items equal 25 lbs, subtract 25 lbs from 300 lbs. This means the maximum weight
limitation of the user is 275 lbs.
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 limitation. Example: If a seating system with a
weight limitation of 300 lbs is mounted onto a power wheelchair with a weight
limitation of 400 lbs, then the power wheelchair is restricted to a 300 lb weight
limitation.
Formula™ Powered Seating10Part No 1122170
SECTION 1—GENERAL GUIDELINES
SECTION 1—GENERAL GUIDELINES
WARNING
SECTION 1 - GENERAL GUIDELINES contains important information for the safe
operation and use of this product.DO NOT use this product or any available
optional equipment without first completely reading and understanding these
instructions and any additional instructional material such as Owner’s Manuals,
Service Manuals or Instruction Sheets supplied with this product or optional
equipment. If you are unable to understand the Warnings, Cautions or Instructions,
contact a healthcare professional, dealer or technical personnel before attempting
to use this equipment - otherwise, injury or damage may occur.
Repair or Service Information
Except for programming, DO NOT service or adjust the wheelchair while occupied,
unless otherwise noted.
A pinch point exists between walking beam/head tube cap and telescoping tube when at
the lowest seat to floor height.
Pinch point may occur when returning the tilted seat to the full upright position or when
lowering the elevating seat. Make sure the hands and body of the occupant, attendants
and bystanders are clear of all pinch points before returning the tilted seat to the full
upright position or lowering the elevating seat.
Before adjusting, repairing or servicing the wheelchair, ALWAYS turn the wheelchair
power Off, otherwise, injury or damage may occur.
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.
Transport ready packages are not retrofittable to existing models and are not field
serviceable.
Wheelchairs should be examined during maintenance for signs of corrosion (water
exposure, incontinence, etc.). Electrical components damaged by corrosion should be
replaced IMMEDIATELY.
Wheelchairs that are used by incontinent users and/or are frequently exposed to water
may require replacement of electrical components more frequently.
Operation Information
Performance adjustments should only be made by professionals of the healthcare field or
persons fully conversant with this process and the driver's capabilities. Incorrect settings
could cause injury to the driver, bystanders, damage to the wheelchair and to
surrounding property.
Part No 112217011Formula™ Powered Seating
SECTION 1—GENERAL GUIDELINES
After the wheelchair has been set-up/adjusted, 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 leave the power button On when entering or exiting your wheelchair.
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 water, ice or oil film.
DO NOT stand on the frame of the wheelchair.
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 your seat.
DO NOT attempt to reach objects if you have to pick them up from the floor by reaching
between your knees.
DO NOT lean over the top of the back upholstery to reach objects behind you, as this may
cause the wheelchair to tip over.
ALWAYS shift your weight in the direction you are turning. DO NOT shift your weight
in the opposite direction of the turn. Shifting your weight in the opposite direction of the
turn may cause the inside drive wheel to lose traction and the wheelchair to tip over.
DO NOT shift your weight or sitting position toward the direction you are reaching as the
wheelchair and/or seating system (if any) may tip over.
DO NOT use an escalator to move a wheelchair between floors. Serious bodily injury may
occur.
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 wheelchair.
NEVER leave an unoccupied wheelchair unattended on an incline.
DO NOT attempt to lift the wheelchair by any removable (detachable) parts. Lifting by
means of any removable (detachable) parts of the wheelchair may result in injury to the
user or damage to the wheelchair.
DO NOT overtighten hardware attaching to the frame. This could cause damage to the
frame tubing.
ALWAYS keep hands and fingers clear of moving parts to avoid injury.
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.
Formula™ Powered Seating12Part No 1122170
SECTION 1—GENERAL GUIDELINES
ALWAYS turn the wheelchair power Off and engage the motor locks/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. Align both casters parallel
with the object you are transferring onto.
DO NOT use with a broken or missing joystick knob.
DO NOT use if joystick does not spring back to the neutral position or becomes sticky or
sluggish.
DO NOT use if joystick boot is torn or damaged.
ALWAYS check foam grips for looseness before using the wheelchair. If loose, contact a
qualified technician for instructions.
ALWAYS engage both wheel locks and reduce the gap distance before transferring to and
from the wheelchair. Turn all casters parallel to the object you are transferring onto.
Avoid storing or using the wheelchair near open flame or combustible products. Serious
injury or damage to property may result.
Use caution when driving in a tilted, elevated or reclined position.
DO NOT operate the seating system while on an incline.
DO NOT operate the seating system while the wheelchair is moving.
NEVER operate the wheelchair or elevate/lower the seat while in any tilted/reclined/back
angle position over 20° relative to the vertical position. If the drive lock-out does not stop
the wheelchair from operating or the seat from elevating/lowering in a tilt position over
20° relative to vertical, DO NOT operate the wheelchair or elevate/lower the seat. DO
NOT attempt to adjust the drive lock-out. Have the wheelchair serviced by a qualified
technician.
Use only the controls listed in Operating Powered Seating Systems on page 24 to activate
the powered seating functions*. DO NOT USE any other actuator controls. Such devices
may result in excess heating and cause damage to the actuator and associated wiring and
could cause a fire, death, physical injury or property damage. If such devices are used,
Invacare shall not be liable and the limited warranty is void.
*NOTE: Specific actuator controls are noted for each function or combination throughout this
manual.
DO NOT operate tilt seat around children.
ALWAYS keep hands and feet out from underneath tilt seat - otherwise serious injury
may result.
DO NOT tip the seating system/wheelchair without assistance.
DO NOT store items under seat.
Cables must be routed and secured properly to ensure that cables DO NOT become
entangled and damaged during normal operation of seating system.
Systems equipped with power legrests only - NEVER allow items to become trapped
between the legrest assemblies. Otherwise, damage to the power legrest could occur.
Part No 112217013Formula™ Powered Seating
SECTION 1—GENERAL GUIDELINES
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
Refer to Typical Product Parameters in this manual and the Typical Product Parameters
in the owner’s manual shipped with the wheelchair base to determine the weight limit
(total combined weight of user and any attachments) of your wheelchair model. DO NOT
exceed the limit - otherwise, injury or damage may result.
Formula™ Powered Seating14Part No 1122170
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 metre (V/m).
Each powered wheelchair can resist EMI up to a certain intensity. This is called its
"immunity level." The higher the immunity level, the greater the protection. At this
time, current technology is capable of achieving at least a 20 V/m immunity level,
which would provide useful protection from the more common sources of radiated
EMI.
There are a number of sources of relatively intense electromagnetic fields in the
everyday environment. Some of these sources are obvious and easy to avoid.
Others are not apparent and exposure is unavoidable. However, we believe that by
following the warnings listed below, your risk to EMI will be minimized.
The sources of radiated EMI can be broadly classified into three types:
1) Hand-held Portable transceivers (transmitters-receivers with the antenna
mounted directly on the transmitting unit. Examples include: citizens band (CB)
radios, "walkie talkie", security, fire and police transceivers, cellular telephones,
and other personal communication devices).
NOTE: Some cellular telephones and similar devices transmit signals while they are ON,
even when not being used.
2) Medium-range mobile transceivers, such as those used in police cars, fire trucks,
ambulances and taxis. These usually have the antenna mounted on the outside of
the vehicle; and
3) Long-range transmitters and transceivers, such as commercial broadcast
transmitters (radio and TV broadcast antenna towers) and amateur (HAM)
radios.
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,
AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to
your powered wheelchair.
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. Also, the electronics used in our
powered wheelchair can generate a low level of electromagnetic interference,
which however will remain within the tolerances permitted by law.
FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE
CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR
MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.
1) Do not operate hand-held transceivers (transmitters receivers), such as citizens
band (CB) radios, or turn ON personal communication devices, such as cellular
phones, while the powered wheelchair is turned ON;
2) Be aware of nearby transmitters, such as radio or TV stations, and try to avoid
coming close to them;
3) If unintended movement or brake release occurs, turn the powered wheelchair
OFF as soon as it is safe;
4) Be aware that adding accessories or components, or modifying the powered
wheelchair, may make it more susceptible to EMI (NOTE: There is no easy way
to evaluate their effect on the overall immunity of the powered wheelchair); and
5) Report all incidents of unintended movement or brake release to the powered
wheelchair manufacturer, and note whether there is a source of EMI nearby.
Important Information
1) 20 volts per meter (V/m) is a generally achievable and useful immunity level
against EMI (as of May 1994) (the higher the level, the greater the protection);
2) This device has been tested to a radiated immunity level of 20 volts per meter.
3) The immunity level of the product is unknown.
Modification of any kind to the electronics of this wheelchair as manufactured by
Invacare may adversely affect the EMI immunity levels.
Formula™ Powered Seating16Part No 1122170
SECTION 3—SAFETY/HANDLING OF WHEELCHAIRS
SECTION 3—SAFETY/HANDLING OF
WHEELCHAIRS
NOTE: For more information about safety/handling of the wheelchair, refer to the owner’s manual
that shipped with the wheelchair base.
Pinch Points
WARNING
A pinch point exists between head tube cap and walking beam.
A pinch point exists between walking beam/head tube cap and telescoping tube
when the seat is in the lowest seat to floor height.
Pinch point may occur when returning the tilted seat to the full upright position or
lowering the elevated seat. Make sure the hands and body of the occupant, attendants and bystanders are clear of all pinch points before lowering seat or returning
the tilted seat to the full upright position.
NOTE: For this procedure, refer to FIGURE 3.1.
Telescoping Tube
Walking
Beam
Pinch Point
Headtube Cap
Front
Caster
Pinch
Point
Walking Beam
Headtube Cap
(Not Shown)
Front Caster
Pinch
Points
FIGURE 3.1 Pinch Points
Part No 112217017Formula™ Powered Seating
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
SECTION 4—SAFETY INSPECTION/
TROUBLESHOOTING
NOTE: Every six months 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.
NOTE: Refer to wheelchair base owner’s manual for additional safety inspection and
troubleshooting information.
Initial adjustments should be made to suit your personal body structure needs and
preference. Thereafter follow these maintenance procedures and those in the owner’s
manual shipped with the wheelchair base:
Safety Inspection Checklists
Inspect/Adjust Initially
CAUTION
As with any vehicle, the wheels and tires should be checked periodically for cracks
and wear, and should be replaced.
❑ Inspect all fasteners.
❑ Inspect TRBKTS fasteners and hardware.
❑ Ensure clothing guards are secure.
❑ Arms are secure but easy to release and adjustment levers engage properly.
❑ Adjustable height arms operate and lock securely.
❑ Upholstery has no rips.
❑ Armrest pad sits flush against arm tube.
❑ Check that all labels are present and legible. Replace if necessary.
❑ Make sure all electrical connections are secure.
❑ Check that cables are routed and secured properly to ensure that cables DO NOT
become entangled and damaged during normal operation of seating system.
❑ Check limit switch position for recline.
❑ Make sure drive lock-out operates properly.
❑ Make sure tilt operates smoothly and properly.
❑ Make sure recline operates smoothly and properly.
❑ Make sure elevate operates smoothly and properly.
Formula™ Powered Seating18Part No 1122170
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
❑ Make sure seating systems with the recline function have the retaining pin in place at
the top of each back cane.
❑ Make sure all systems, except Elevate Only, have the retaining pin in place at the back
of each seat rail.
❑ Make sure elevate systems drive with reduced speed when seat is in elevated position.
❑ Check that spreader bar mounting fasteners are tight.
❑ Check that back cane mounting fasteners and back mounting fasteners are tight.
Inspect/Adjust Weekly
❑ Inspect all fasteners.
❑ Inspect TRBKTS fasteners and hardware.
❑ Make sure all electrical connections are secure.
❑ Check that cables are routed and secured properly to ensure that cables DO NOT
become entangled and damaged during normal operation of seating system.
Inspect/Adjust Monthly
❑ Clean upholstery and armrests.
❑ Clean dirt and lint from axles.
❑ Clean dirt and lint from bearings.
❑ 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.
❑ Make sure drive lock-out operates properly.
❑ Make sure tilt operates smoothly and properly.
❑ Make sure recline operates smoothly and properly.
❑ Make sure elevate operates smoothly and properly.
❑ Make sure elevate systems drive with reduced speed when seat is in elevated position.
❑ Check that spreader bar mounting fasteners are tight.
❑ Check that back cane mounting fasteners and back mounting fasteners are tight.
Inspect/Adjust Periodically
❑ Inspect all fasteners.
❑ Inspect TRBKTS fasteners and hardware.
❑ Ensure clothing guards are secure.
❑ Arms are secure but easy to release and adjustment levers engage properly.
❑ Adjustable height arms operate and lock securely.
Part No 112217019Formula™ Powered Seating
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
❑ Upholstery has no rips.
❑ Armrest pad sits flush against arm tube.
❑ Inspect foam handgrips for damage. If damaged, have them replaced by a qualified
technician.
❑ Check that all labels are present and legible. Replace if necessary.
❑ Inspect electrical components for signs of corrosion. Replace if corroded or damaged.
❑ Check limit switch position for recline.
❑ Make sure seating systems with the recline function have the retaining pin in place at
the top of each back cane.
❑ Make sure all systems, except Elevate Only, have the retaining pin in place at the back
of each seat rail.
❑ Check that spreader bar mounting fasteners are tight.
❑ Check that back cane mounting fasteners and back mounting fasteners are tight.
Troubleshooting
NOTE: For additional troubleshooting information and explanation of error codes, refer to the
wheelchair base owner’s manual and the individual Electronics Manual supplied with each
wheelchair.
SYMPTOMPROBABLE CAUSESOLUTIONS
Wheelchair Power On but does not
drive.
Seating system not functioning or
working intermittently.
SPM L Park Brake Fault or
SPM R Park Brake Fault displays
and wheelchair does not drive.
CHARGER PLUGGED IN displays.Battery charger connected
System tilted or reclined beyond
drive lock-out angle (20°).
Motor lock levers are
disengaged.
Low batteries.
Faulty electrical connection.
Seat has been driven under a
heavy load for an extended
period of time.
Motor lock levers disengaged
(Error code E9 or E10).
(Error code E28).
Return to neutral position (upright and
completely lowered). Refer to
Operating Powered Seating
Systems on page 24.
Contact Invacare/Dealer for service if
this does not solve the problem.
Engage motor lock levers. See
wheelchair base owner’s manual.
Charge batteries.
Check all connections.
Allow time for the electronics to cool
down (Light Duty Use).
Engage motor lock levers.
Unplug battery charger from the
wheelchair.
Formula™ Powered Seating20Part No 1122170
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOMPROBABLE CAUSESOLUTIONS
SPM Battery Fault displays and the
wheelchair does not drive.
JOYSTICK TIMEOUT displays and
the wheelchair does not drive.
JS REV TOO LARGE
JS FWD TOO LARGE
JS LFT TOO LARGE or
JS RGT TOO LARGE
displays and the wheelchair does not
drive.
NEUTRAL TESTING displays.The joystick neutral test has
BAD JOYSTICK CAL VALUES
displays and the wheelchair does not
drive.
SPM NOT CONNECTED
SPM Communications Fault
displays and the wheelchair drives
slowly.
ATTENDANT ACTIVE and
displays.
Batteries draw excessive current
when charging.
Batteries need to be charged
(Error code E14).
Joystick or input device is
disconnected (Error code 32).
The joystick or input device is
sending a value outside of the
reverse, forward, left or right
limits (Error codes E01, E02,
E03 or E04).
failed (Error code E18).
The joystick calibration values
are outside of the expected
range (Error code E19).
The MPJ or Display module is
not communicating with the
control module (Error code
E200).
The controller has determined a
fault during a previous turn-off
process (Error code E41).
The Proportional or Digital
Attendant control is active and
can be used to drive the chair
(Error code W05).
Battery failure.
Charge batteries. If batteries fail to
charge properly, check battery charger
or replace batteries. Refer to Replacing
Batteries on page 63.
Turn off power, reconnect the joystick
of input device and turn power on.
Replace joystick or input device.
Release the joystick and try to get the
joystick back into the center-most
position.
Contact Dealer/Invacare for
recalibration of the joystick (joystick
throw procedure).
Check the connections between the
joystick or display and the controller.
Turn the power off and then back on.
Replace the controller if necessary.
Turn the wheelchair off and back on.
This is normal behavior.
Have batteries checked for shorted cell.
Replace if necessary.
Electrical malfunction.
Battery indicator flashes the charge
level is low - immediately after
recharge.
Battery indicator flashes the charge
level is low - too soon after being
recharged.
Motor “chatters” or runs irregular.Electrical malfunction.Contact Dealer/Invacare for Service.
Part No 112217021Formula™ Powered Seating
Battery failure.
Malfunctioning battery charger.
Electrical malfunction.
Batteries not charged.
Weak batteries.
Contact Dealer/Invacare for service.
Check batteries for shorted cell.
Replace if necessary.
Contact Dealer/Invacare for Service.
Contact Dealer/Invacare for Service.
Have charger checked.
Replace batteries if necessary. Refer to
Replacing Batteries
on page 63.
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
SYMPTOMPROBABLE CAUSESOLUTIONS
Joystick erratic or does not respond
as desired.
Damaged motor coupling.
Electrical malfunction.
Contact Dealer/Invacare for Service.
Contact Dealer/Invacare for Service.
Wheelchair does not respond to
commands.
Power indicator off - even after
recharging.
TILT WARNING displays and the
wheelchair will not drive.
MAX BACK ANGLE displays.
SPM Inhibited displays and the
wheelchair does not drive.
SPM Slow Down is displayed and
the wheelchair drives slowly.
Controller programmed
improperly.
Poor battery terminal
connection.
Electrical malfunction.Contact Dealer/Invacare for Service.
The system is tilted or reclined
beyond drive lock-out angle of
20° (Error code W01).
The wheelchair back has
reached the maximum
programmed back angle on a
wheelchair with a TIAM, RIAM
or TRAM (Error code W02).
The system is tilted or reclined
beyond the drive lock-out angle
of 20° (Error code W03).
The elevating seat is elevated
(Error code W04).
Contact Dealer/Invacare to have
controller reprogrammed.
Have terminals cleaned.
Return the system to upright position.
The wheelchair back will not go past
the programmed maximum back angle.
This is normal behavior.
Return the system to the upright
position.
Return elevating seat to the lowest
position to drive at full speed.
Formula™ Powered Seating22Part No 1122170
SECTION 5—WHEELCHAIR OPERATION
SECTION 5—WHEELCHAIR
OPERATION
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.
Set-up of the Electronic Control Unit is to be performed only by a qualified
technician. The final adjustments of the controller may affect other activities of the
wheelchair. Damage to the equipment could occur under these circumstances.
A Note About Drive Lock-Out
WARNING
NEVER operate the wheelchair or elevate/lower the seat while the back is in any
tilted/reclined/back angle position over 20° relative to the vertical position. If the
drive lock-out does not stop the wheelchair from operating or the seat from
elevating/lowering in a tilt/recline/back angle position over 20° relative to the
vertical position, DO NOT operate the wheelchair or elevate/lower the seat. DO
NOT attempt to adjust the drive lock-out. Have the wheelchair serviced by a
qualified technician.
The wheelchair user MUST have a clear line of sight to drive safely. On initial chair
delivery and after adjusting the back angle, drive lock-out switch, tilt system or
recline system, tilt and recline the seat back to the farthest driving position
immediately before drive lock-out engages and ensure there is a clear line of sight
present in which to drive the wheelchair. If a clear line of sight is not present, have
the back angle repositioned or readjust the lockout angle such that safe driving with
a clear line of sight is achieved. Otherwise injury or damage may occur.
TILT WARNING or SPM Inhibited displays on the joystick or display unit when
the drive lock-out feature has been activated.
Drive lock-out is a feature designed to prevent the wheelchair from being driven after the
seating system has been tilted or reclined beyond 20°* relative to the vertical position. The
back can be positioned at a 10° relative offset to the seat base, thereby resulting in a back
angle potential of 30° before which the drive lock-out is activated. This may affect the
wheelchair user’s line of sight while driving. Make sure the wheelchair user can see
properly to ensure safe driving.
*NOTE: 20° back angle can be any combination of recline, tilt, back angle and/or surface angle.
NOTE: Refer to Typical Product Parameters
on page 9 for tilt and recline angle ranges.
Part No 112217023Formula™ Powered Seating
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