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
Refer to the table below for part numbers of additional documents which are referenced
in this manual.
MANUALPART NUMBER
MK6i™ Field Reference Guide1141471
MK6i Service Manual1143203
NOTE: Updated versions of this manual are available on www.invacare.com.
Weight Training ........................................................................................................................................16
SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS ......................... 17
Stability and Balance.................................................................................................................................17
Coping With Everyday Obstacles.........................................................................................................18
A Note to Wheelchair Assistants ........................................................................................................18
Reaching, Leaning and Bending - Forward ..........................................................................................18
Reaching, Leaning and Bending - Backward........................................................................................19
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.
Part No 11348397Power Tiger™
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
WARNING
CAUTION
Danger indicates an imminently hazardous situation which, if not avoided,
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
THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO
CHANGE WITHOUT NOTICE.
WHEELCHAIR USER
As a manufacturer of wheelchairs, Invacare endeavors to supply a wide variety of
wheelchairs to meet many needs of the end user. However, final selection of the
type of wheelchair to be used by an individual rests solely with the user and his/her
healthcare professional capable of making such a selection. 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
Wheelchair users should not be transported in vehicles of any kind while in
wheelchairs. 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.
Power Tiger™8Part No 1134839
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.
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.
TILT WARNINGS
TO HEALTHCARE PROFESSIONALS/ASSISTANTS:
Make sure the occupant of the wheelchair is properly positioned.
When returning the occupant of the wheelchair to the full upright position, more
body strength will be required for approximately the last twenty (20) degrees of
incline (reverse recline). Make sure to use proper body mechanics (use your legs) or
seek assistance if necessary to avoid injury.
Part No 11348399Power Tiger™
LABEL LOCATIONS
LABEL LOCATIONS
NOTE: The battery label is found on
the inside of each battery box lid.
Battery Box Lid
WARNING
DO NOT OPERATE WITHOUT
THE ANTI-TIP TUBES
REV. 5/98
NOTE: This label is located on
both sides of the wheelchair.
INSTALLED.
P/N 60106X144
NOTE: This label is located on both
sides of the wheelchair.
NOTE: Serial
number label is on
the opposite end of
this tube.
Power Tiger™10Part No 1134839
TYPICAL PRODUCT PARAMETERS
TYPICAL PRODUCT PARAMETERS
POWER TIGER
SEAT WIDTH:10 to 16 inches in 1-inch increments
SEAT DEPTH:10 to 16 inches in 1-inch increments
BACK ANGLE RANGE:80° to 110°
SEAT-TO-FLOOR:17¾ inches
OVERALL WIDTH OF BASE
WITHOUT JOYSTICK:
WITH SIDE-MOUNT JOYSTICK:
OVERALL HEIGHT:38 inches
TILT ANGLE:5° to 30°
OVERALL LENGTH
WITH 90° SWINGAWAY FOOTREST
10 to 13 Inch Seat:
14 Inch Seat:
15 to 16 Inch Seat:
WITH FIXED OR ONE-PIECE FOOTBOARD
10 to 13 Inch Seat:
14 Inch Seat:
15 to 16 Inch Seat:
*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 150 lbs and additional
items equal 25 lbs, subtract 25 lbs from 150 lbs. This means the maximum weight limitation of the
user is 125 lbs.
Part No 113483911Power Tiger™
SECTION 1—GENERAL GUIDELINES
SECTION 1—GENERAL GUIDELINES
WARNING
SECTION 1 - GENERAL GUIDELINES contains important information for the safe
operation and use of this product.DO NOT use this product or any available
optional equipment without first completely reading and understanding these
instructions and any additional instructional material such as Owner’s Manuals,
Service Manuals or Instruction Sheets supplied with this product or optional
equipment. If you are unable to understand the Warnings, Cautions or Instructions,
contact a healthcare professional, dealer or technical personnel before attempting
to use this equipment - otherwise, injury or damage may occur.
Repair or Service Information
Set-up of the 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 if improperly setup or adjusted.
Except for programming, DO NOT service or adjust the wheelchair while occupied,
unless otherwise noted.
Wheelchairs should be examined during maintenance for signs of corrosion (water
exposure, incontinence, etc.). Electrical components damaged by corrosion should be
replaced IMMEDIATELY.
Wheelchairs that are used by incontinent users and/or are frequently exposed to water
may require replacement of electrical components more frequently.
Tilt Seats Only - Pinch point may occur when returning the tilted seat to the full upright
position. 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.
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.
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.
Power Tiger™12Part No 1134839
SECTION 1—GENERAL GUIDELINES
After the wheelchair has been set-up, check to make sure that the wheelchair performs to
the specifications entered during the set-up procedure. If the wheelchair does NOT
perform to specifications, turn the wheelchair Off immediately and reenter set-up
specifications. Repeat this section until the wheelchair performs to specifications.
DO NOT 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 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 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 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 and/or seating system (if any) 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.
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 use an escalator to move a wheelchair between floors. Serious bodily injury may
occur.
DO NOT stand on the footplates. 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 stop a moving wheelchair with the wheel locks. Wheel locks are not
brakes.
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.
Part No 113483913Power Tiger™
SECTION 1—GENERAL GUIDELINES
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. Align both casters parallel with the
object you are transferring onto.
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.
DO NOT engage or disengage the clutches until the power is in the Off position.
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 use anti-tippers. When outdoors on wet, soft ground or on gravel surfaces,
anti-tippers may not provide the same level of protection against tip over. Extra caution
must be observed when traversing such surfaces.
Avoid storage or use near open flame or combustible products.
DO NOT allow user to leave the wheelchair while the seat is tilted. ALWAYS return the
back to the upright position when transferring the user in or out of the wheelchair.
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 recommendations may cause the tire to
explode and cause bodily harm. The recommended tire pressure is listed on the side wall
of the tire.
Electrical
Grounding Instructions:
DO NOT, under any circumstances, cut or remove the round grounding prong from any
plug used with or for Invacare products. Some devices are equipped with three-prong
(grounding) plugs for protection against possible shock hazards. 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.
Power Tiger™14Part No 1134839
SECTION 1—GENERAL GUIDELINES
Batteries
The warranty and performance specifications contained in this manual are based on the
use of deep cycle gel cell batteries. Invacare strongly recommends their use as the power
source for this unit.
Carefully read battery/battery charger information prior to installing, servicing or
operating your wheelchair.
Charging Batteries
DANGER
When using an extension cord, use only a three wire extension cord having at least
16 AWG (American Wire Gauge) wire and the same or higher electrical rating as
the device being connected. Use of improper extension cord could result in risk of
fire and electric shock.
Three prong to two prong adapters should not be used. Use of three prong adapters
can result in improper grounding and present a shock hazard to the user.
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.
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.
Rain Test
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.
DO NOT leave power wheelchair in a rain storm of any kind.
DO NOT use power wheelchair in a shower.
DO NOT leave power wheelchair in a damp area for any length of time.
Part No 113483915Power Tiger™
SECTION 1—GENERAL GUIDELINES
Direct exposure to rain or dampness will cause the wheelchair to malfunction electrically
and mechanically; may cause the wheelchair 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
Refer to Typical Product Parameters on page 11 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.
Power Tiger™16Part No 1134839
SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS
SECTION 2—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. If signs of wear appear, belt MUST
be replaced immediately.
DO NOT climb, go up or down ramps or traverse slopes greater than 9°.
Invacare strongly recommends proceeding down ramps or slopes slowly to avoid
hard braking or sudden stops.
Be aware that carrying heavy objects on your lap while occupying the wheelchair
may adversely affect the stability of the wheelchair, resulting in serious bodily injury
to the user, damage to the wheelchair and surrounding property.
This wheelchair has been designed to accommodate one individual only. If more
than one individual occupies the wheelchair this may adversely affect the stability of
the wheelchair, resulting in serious bodily injury to the user and passenger and
damage to the wheelchair and surrounding property.
To assure stability and proper operation of your wheelchair, you must at all times
maintain proper balance. Your wheelchair has been designed to remain upright and
stable during normal daily activities as long as you do not move beyond the center of
gravity. DO NOT lean forward out of the wheelchair any further than the length of the
armrests. Make sure the casters are pointing in the forward position whenever you lean
forward. This can be achieved by advancing the wheelchair and then reversing it in a
straight line.
Part No 113483917Power Tiger™
SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS
Coping With Everyday Obstacles
WARNING
DO NOT attempt to reach objects if you have to move forward in the seat or pick
them up from the floor by reaching down between your knees.
Many activities require the wheelchair user to reach, bend and transfer in and out of
the wheelchair. These movements will cause a change to the normal balance,
center of gravity, and weight distribution of the wheelchair. To determine and
establish your particular safety limits, practice bending, reaching and transferring
activities in several combinations in the presence of a qualified healthcare
professional before attempting active use of the wheelchair.
Proper positioning is essential for your safety. When reaching, leaning, bending or
bending forward, it is important to use the casters as a tool to maintain stability and
balance.
Coping with the irritation of everyday obstacles can be somewhat alleviated by learning
how to manage your wheelchair. Keep in mind your center of gravity to maintain stability
and balance.
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.
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.
Reaching, Leaning and Bending - Forward
WARNING
DO NOT attempt to reach objects if you have to move forward in the seat or pick
them up from the floor by reaching down between your knees.
NOTE: For this procedure, refer to
FIGURE 2.1.
Position the casters so that they are
extended away from the drive wheels and
engage wheel locks/clutches.
FIGURE 2.1 Reaching, Leaning and Bending
- Forward
Power Tiger™18Part No 1134839
SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS
Reaching, Leaning 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 2.2.
Position wheelchair as close as possible to
the desired object. Position the casters so
that they are extended away from the drive
wheels to create the longest possible
wheelbase. Reach back only as far as your
arm will extend without changing your
sitting position.
FIGURE 2.2 Reaching, Leaning and Bending
- Backward
Pinch Points
WARNING
TILT SEATS ONLY - Pinch point may occur when returning the tilted seat to the
full upright position. Make sure the hands and body of both the occupant, attendants
and bystanders are clear of all pinch points before returning the tilted seat to the
full upright position.
Stairways
WARNING
DO NOT attempt to move an occupied power wheelchair between floors using a
stairway. Use an elevator to move an occupied power wheelchair between floors. If
moving a power wheelchair between floors by means of a stairway, the occupant
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 assistants and
making thorough preparations. Make sure to use only secure, non-detachable parts
for hand-hold supports.
DO NOT attempt to lift the wheelchair by 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.
The weight of the wheelchair without the user and without batteries is
approximately 94 lbs. Use proper lifting techniques (lift with your legs) to avoid
injury.
Part No 113483919Power Tiger™
SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS
Follow this procedure for moving the wheelchair between floors when an elevator is
not available:
NOTE: When using a stairway to move the wheelchair and any accessories, move all wheelchair
components away from the stairway prior to reassembly.
1. Remove the occupant from the wheelchair.
2. Turn the anti-tippers so the wheels face up.
3. Remove battery box(es) from wheelchair. Refer to Batteries on page 71.
4. Bend your knees and keep your back straight.
5. Using non-removable (non-detachable) parts of the wheelchair, lift the wheelchair off
of the ground and transfer the wheelchair up or down the stairs.
6. The wheelchair should not be lowered until the last stair has been negotiated and the
wheelchair has been carried away from the stairway.
7. Turn the anti-tippers so the wheels face down.
8. Verify anti-tippers are locked in position.
WARNING: ESCALATORS
DO NOT use an escalator to move a wheelchair between floors. Serious bodily
injury may occur.
Transferring To and From Other Seats
WARNING
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. Align both casters
parallel with the object you are transferring onto.
CAUTION
When transferring, position yourself as far back as possible in the seat. This will
prevent broken screws, damaged upholstery and the possibility of the wheelchair
tipping forward.
NOTE: For this procedure, refer to FIGURE 2.3 on page 21.
NOTE: Adequate mobility and upper body strength is required to perform this activity
independently.
1. Position the wheelchair as close as possible along side the seat to which you are
transferring, with the casters aligned parallel with the object.
2. Engage clutches and wheel locks. Refer to Engaging/Disengaging the Wheel Locks on
page 40 and Disengaging/Engaging Clutch Levers on page 41.
3. Shift body weight into seat with transfer.
Power Tiger™20Part No 1134839
SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS
NOTE: During independent transfer, little or no seat platform will be beneath you. Use a transfer
board if at all possible.
Minimize Gap Distance
FIGURE 2.3 Transferring To and From Other Seats
Part No 113483921Power Tiger™
SECTION 3—EMI INFORMATION
SECTION 3—EMI INFORMATION
WARNING
CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION
REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC
INTERFERENCE ON YOUR POWERED WHEELCHAIR.
Electromagnetic Interference (EMI) From Radio Wave Sources
Powered wheelchairs and motorized scooters (in this text, both will be referred to
as powered wheelchairs) may be susceptible to electromagnetic interference (EMI),
which is interfering electromagnetic energy (EM) emitted from sources such as
radio stations, TV stations, amateur radio (HAM) transmitters, two way radios, and
cellular phones. The interference (from radio wave sources) can cause the powered
wheelchair to release its brakes, move by itself, or move in unintended directions. It
can also permanently damage the powered wheelchair's control system. The
intensity of the interfering EM energy can be measured in volts per meter (V/m).
Each powered wheelchair can resist EMI up to a certain intensity. This is called its
“immunity level”. The higher the immunity level, the greater the protection. At
this time, current technology is capable of achieving at least a 20 V/m immunity
level, which would provide useful protection from the more common sources of
radiated EMI.
There are a number of sources of relatively intense electromagnetic fields in the
everyday environment. Some of these sources are obvious and easy to avoid.
Others are not apparent and exposure is unavoidable. However, we believe that by
following the warnings listed below, your risk to EMI will be minimized.
The sources of radiated EMI can be broadly classified into three types:
1) Hand-held Portable transceivers (transmitters-receivers with the antenna
mounted directly on the transmitting unit. Examples include: citizens band (CB)
radios, “walkie talkie”, security, fire and police transceivers, cellular telephones,
and other personal communication devices).
NOTE: Some cellular telephones and similar devices transmit signals while they are On,
even when not being used.
2) Medium-range mobile transceivers, such as those used in police cars, fire trucks,
ambulances and taxis. These usually have the antenna mounted on the outside of
the vehicle; and
3) Long-range transmitters and transceivers, such as commercial broadcast
transmitters (radio and TV broadcast antenna towers) and amateur (HAM)
radios.
NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,
AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems to
your powered wheelchair.
Because EM energy rapidly becomes more intense as one moves closer to the
transmitting antenna (source), the EM fields from hand-held radio wave sources
(transceivers) are of special concern. It is possible to unintentionally bring high
levels of EM energy very close to the powered wheelchair's control system while
using these devices. This can affect powered wheelchair movement and braking.
Therefore, the warnings listed below are recommended to prevent possible
interference with the control system of the powered wheelchair.
Electromagnetic interference (EMI) from sources such as radio and TV stations,
amateur radio (HAM) transmitters, two-way radios, and cellular phones can affect
powered wheelchairs and motorized scooters.
FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE
CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR
MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.
1) DO NOT operate hand-held transceivers (transmitters receivers), such as
citizens band (CB) radios, or turn On personal communication devices, such as
cellular phones, while the powered wheelchair is turned On;
2) Be aware of nearby transmitters, such as radio or TV stations, and try to avoid
coming close to them;
3) If unintended movement or brake release occurs, turn the powered wheelchair
Off as soon as it is safe;
4) Be aware that adding accessories or components, or modifying the powered
wheelchair, may make it more susceptible to EMI (NOTE: There is no easy way
to evaluate their effect on the overall immunity of the powered wheelchair); and
5) Report all incidents of unintended movement or brake release to the powered
wheelchair manufacturer, and note whether there is a source of EMI nearby.
Important Information
1) 20 volts per meter (V/m) is a generally achievable and useful immunity level
against EMI (as of May 1994) (the higher the level, the greater the protection);
2) This device has been tested to a radiated immunity level of 20 volts per meter;
3) The immunity level of the product is unknown.
Modification of any kind to the electronics of this wheelchair as manufactured by
Invacare may adversely affect the EMI immunity levels.
Part No 113483923Power Tiger™
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.
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
CAUTION
As with any vehicle, the wheels and tires should be checked periodically for cracks
and wear, and should be replaced.
❑ Make sure wheelchair rolls straight (no excessive drag or pull to one side).
❑ Inspect all fasteners.
❑ Inspect electrical components for signs of corrosion. Replace if corroded or damaged.
❑ Make sure clothing guards are secure.
❑ Make sure arms are secure but easy to release and adjustment levers engage properly.
❑ Make sure adjustable height arms operate and lock securely.
❑ Make sure upholstery has no rips.
❑ Make sure armrest pad sits flush against arm tube.
❑ Make sure axle nut and wheel mounting nuts are secure on drive wheels.
❑ Make sure there is no excessive side movement or binding when drive wheels are
lifted and spun when disengaged (free-wheeling).
❑ Inspect wheel/fork assembly for proper tension by spinning caster; caster should come
to a gradual stop.
❑ Loosen/tighten caster locknut if wheel wobbles noticeably or binds to a stop.
❑ Make sure all caster/wheel/fork/headtube fasteners are secure and not damaged/
missing.
❑ Make sure wheel locks do not interfere with tires when rolling.
❑ Make sure wheel lock pivot points are free of wear and looseness.
❑ Make sure wheel locks are easy to engage.
❑ Inspect tires for flat spots and wear.
❑ Check pneumatic tires for proper inflation.
❑ Check that all labels are present and legible. Replace if necessary.
❑ Ensure that casters are free of debris.
Power Tiger™24Part No 1134839
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
Inspect/Adjust Weekly
CAUTION
As with any vehicle, the wheels and tires should be checked periodically for cracks
and wear, and should be replaced.
❑ Inspect wheel/fork assembly for proper tension by spinning caster; caster should come
to a gradual stop.
❑ Make sure all caster/wheel/fork/headtube fasteners are secure and not damaged/
missing.
❑ Inspect tires for flat spots and wear.
❑ Check pneumatic tires for proper inflation.
❑ Ensure that casters are free of debris.
Inspect/Adjust Monthly
❑ Make sure axle nut and wheel mounting nuts are secure on drive wheels.
❑ Loosen/tighten caster locknut if wheel wobbles noticeably or binds to a stop.
❑ Make sure wheel locks do not interfere with tires when rolling.
❑ Make sure wheel lock pivot point are free of wear and looseness.
❑ Inspect seat positioning strap for any signs of wear. Ensure buckle latches. Verify
hardware that attaches strap to frame is secure and undamaged. Replace if necessary.
❑ Ensure that casters are free of debris.
Inspect/Adjust Periodically
❑ Make sure wheelchair rolls straight (no excessive drag or pull to one side).
❑ Inspect all fasteners.
❑ Inspect electrical components for signs of corrosion. Replace if corroded or damaged.
❑ Make sure clothing guards are secure.
❑ Make sure arms are secure but easy to release and adjustment levers engage properly.
❑ Make sure adjustable height arms operate and lock securely.
❑ Make sure upholstery has no rips.
❑ Make sure armrest pad sits flush against arm tube.
❑ Inspect wheel/fork assembly for proper tension by spinning caster; caster should come
to a gradual stop.
❑ Make sure wheel locks are easy to engage.
❑ 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.
❑ Ensure that casters are free of debris.
Part No 113483925Power Tiger™
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
Troubleshooting - Mechanical
SOLUTIONS
TURN/
SLUGGISH
LEFT/RIGHT
CASTERS
PERFORMANCE
FLUTTER
RATTLES
SQUEAKS AND
LOOSENESS
IN WHEELCHAIR
WHEELS
WHEELCHAIR 3
WHEELCHAIR VEERS
XXXXXCheck pneumatic tires for correct and equal pressure.
XXXXCheck for loose stem nuts/bolts.
XXCheck that casters contact ground at the same time.
Troubleshooting - Electrical
NOTE: For additional troubleshooting information and explanation of error codes, refer to the
individual Electronics Manual supplied with each wheelchair
SPJ+, SPJ+ w/PSS or SPJ+ w/ACC Joysticks
The joystick information gauge and the service indicator give indications of the type of
fault or error detected by the control module. When a fault is detected, the wheelchair
may stop and not drive. The LEDs on the information gauge may flash in a particular
pattern or the service indicator light will flash. The number or type of flashes indicates the
nature of the error. If multiple errors are found, only the first error encountered by the
control module will be displayed.
Information Gauge Display Diagnostics
DISPLAYDESCRIPTIONDEFINITIONCOMMENTS
Information
Gauge
Display
All LEDs are off.Power is off.
All LEDs are on.Power is on.Fewer than three LEDs on
implies reduced battery
charge.
Power Tiger™26Part No 1134839
SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
DISPLAYDESCRIPTIONDEFINITIONCOMMENTS
Information
Gauge
Display
Left RED LED is flashing.Battery charge is low.The batteries should be
charged as soon as possible.
Left to Right “chase” alternating with steady display.
All LEDs are flashing slowly. Joystick has detected
Joystick is in programming, inhibit and/or charging mode.
Out-of-Neutral-at-Power-Up mode.
Service Indicator Light Diagnostics
NUMBER
OF
FLASHES
1User FaultRelease joystick to neutral and try again.
2Battery FaultCharge the batteries. Refer to Charging Batteries
3Left Motor FaultContact Invacare/Dealer for service.
4Right Motor FaultContact Invacare/Dealer for service.
ERROR CODE
DESCRIPTION
POSSIBLE SOLUTION
Check that battery cables are connected properly. Refer to
Disconnecting/Connecting Battery Cables
If necessary, replace batteries. Refer to Replacing Batteries
page 77.
The steady LEDs indicate
the current state of the
battery charge.
Release the joystick back
to Neutral.
on page 79.
on page 74.
on
5Left Park Brake FaultContact Invacare/Dealer for service.
6Right Park Brake FaultContact Invacare/Dealer for service.
7Remote FaultCheck to make sure joystick is connected properly.
Contact Invacare/Dealer for service.
8Controller FaultContact Invacare/Dealer for service.
9Communications FaultContact Invacare/Dealer for service.
10General FaultContact Invacare/Dealer for service.
11Incompatible or incorrect
Remote
Part No 113483927Power Tiger™
Wrong type of remote connected. Contact Invacare/Dealer
for service.
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